JP2006195404A - Liquid crystal device and electronic device - Google Patents

Abstract

In an IPS liquid crystal device to which a two-terminal element is applied, display quality is prevented from deteriorating.
A liquid crystal display device includes a liquid crystal sealed between a color filter substrate and an element substrate having data lines, scanning lines, TFD elements, pixel electrodes, and the like. The data line has an electrode portion having a comb-tooth shape in the sub-pixel region and a linear main line portion that connects adjacent electrode portions. The plurality of conductive portions have a wiring configuration in which they are connected in parallel. Between each electrode, first to third transparent electrode portions having a substantially stripe shape, which is an element of the pixel electrode, are formed. The scanning line is electrically connected to the TFD element, and the TFD element is electrically connected to the first to third transparent electrode portions, and a horizontal electric field is formed between each conductive portion and each transparent electrode portion in a direction substantially parallel to the element substrate. E occurs to control the alignment of the liquid crystal molecules. In particular, since a circuit in which the electrode portions of the data lines are connected in parallel is configured, the wiring resistance can be reduced, the occurrence of lateral crosstalk can be prevented, and the display quality can be prevented from deteriorating.
[Selection] Figure 4

Description

  The present invention relates to a liquid crystal device and an electronic apparatus suitable for use in displaying various information.

  Conventional TN (Twisted Nematic) type liquid crystal devices align liquid crystal molecules by enclosing liquid crystal between a pair of substrates and applying an electric field in a direction perpendicular to the substrates by means of transparent electrodes provided on each substrate. To control. On the other hand, in recent years, a method is known in which the direction of the electric field applied to the liquid crystal is a direction substantially parallel to the substrate. This method is called a horizontal electric field method, an IPS (In-Plane Switching) method, etc., and has recently attracted attention because of its excellent viewing angle characteristics.

  As this type of IPS liquid crystal device, for example, one of a pair of substrates is arranged so that a comb-like pixel electrode and a comb-like common electrode mesh with each other, and the other counter substrate has There is known a liquid crystal device in which liquid crystal is sealed between both substrates without forming an electrode (see, for example, Patent Documents 1 to 5). In the liquid crystal devices disclosed in these patent documents, a three-terminal switching element, for example, a TFT (Thin Film Transistor) element is used as the switching element, and the TFT element is provided on the gate line.

Japanese Patent Laid-Open No. 2002-23171 JP 2001-330849 A JP 2000-275664 A JP-A-10-221705 JP-A-9-269497

  However, in the above liquid crystal device, since the common electrode that generates a lateral electric field with the comb-like pixel electrode is formed in a comb-like shape, the overall wiring resistance of the common electrode is increased, There is a risk that the display quality will deteriorate.

  The present invention has been made in view of the above points, and by devising the structure of an electrode that generates a lateral electric field with a pixel electrode, the resistance of the electrode is reduced, and the display quality is lowered. It is an object of the present invention to provide an IPS liquid crystal device and an electronic device using a two-terminal element or the like that can be prevented.

  In one aspect of the present invention, a liquid crystal device includes a plurality of first electrodes, a two-terminal element connected to the first electrode, a pixel electrode connected to the two-terminal element, and the plurality of first electrodes. A plurality of second electrodes that intersect with the one electrode and extend to face the pixel electrode, and generate an electric field with the pixel electrode, wherein the second electrode is the second electrode In addition to having a plurality of electrode portions branched from the electrodes, the pixel electrode is provided between the plurality of electrode portions, and the plurality of electrode portions form a circuit connected in parallel.

  The liquid crystal device includes a plurality of first electrodes, a two-terminal element such as a TFD element connected to the first electrode, a pixel electrode connected to the two-terminal element, and a plurality of first electrodes. And a plurality of second electrodes that generate an electric field (lateral electric field) with the pixel electrode. In this liquid crystal device, the second electrode has a plurality of electrode portions branched from the second electrode, and the pixel electrode is provided between the plurality of electrode portions. For this reason, in this liquid crystal device, when the liquid crystal is driven, a lateral electric field is generated between the electrode portion and the pixel electrode to control the alignment of the liquid crystal. In other words, it is possible to configure a horizontal electric field type or IPS type liquid crystal device to which a two-terminal element is applied. In a preferred example, the first electrode can be a scan line or a data line, and the second electrode can accordingly be a data line or a scan line.

  By the way, in such a liquid crystal device, when the wiring resistance of the second electrode increases, the time constant (product of the capacitor C and the resistance R) by the second electrode and the liquid crystal increases, and so-called lateral crosstalk occurs. There is a risk that the display quality will deteriorate. Here, the horizontal crosstalk means that the display level is different on the display image even though the line where the pixel level is concentrated at a specific gradation and the line where the pixel level is not, the same gradation is displayed. It means to end.

  Therefore, in order to prevent such a display defect from occurring, it is necessary to reduce the time constant CR, and for this purpose, it is necessary to reduce the wiring resistance of the second electrode.

  In this respect, in this liquid crystal device, in particular, a plurality of electrode portions form a circuit connected in parallel. Thereby, the overall wiring resistance of the second electrode can be lowered. As a result, it is possible to prevent so-called lateral crosstalk from occurring and to prevent display quality from deteriorating.

  In another aspect of the invention, the liquid crystal device intersects the plurality of first electrodes, the pixel electrode disposed between the adjacent first electrodes, and the plurality of first electrodes, A plurality of second electrodes for generating an electric field with respect to the pixel electrode; and the first electrode and the second electrode provided corresponding to a crossing position of the first electrode and the second electrode. And a three-terminal element connected to the pixel electrode, the second electrode has a plurality of electrode portions branched from the second electrode, and the pixel electrode is provided between the plurality of electrode portions. The plurality of electrode portions form a circuit connected in parallel.

  The liquid crystal device includes a plurality of first electrodes, a pixel electrode disposed between adjacent first electrodes, and a plurality of first electrodes, and an electric field (lateral) between the pixel electrodes. TFT elements connected to the first electrode, the second electrode, and the pixel electrode, which are provided corresponding to the intersection positions of the plurality of second electrodes that generate the electric field) and the first electrode and the second electrode. And a three-terminal element. In this liquid crystal device, the second electrode has a plurality of electrode portions branched from the second electrode, and the pixel electrode is provided between the plurality of electrode portions. Therefore, in this liquid crystal device, when the liquid crystal is driven, a lateral electric field is generated between the electrode portion and the pixel electrode, thereby controlling the alignment of the liquid crystal. That is, it is possible to configure a horizontal electric field type or IPS type liquid crystal device to which a three-terminal element is applied. In a preferred example, the first electrode can be a scan line or a data line, and the second electrode can accordingly be a data line or a scan line.

  In particular, in this liquid crystal device, a plurality of electrode portions are formed so as to form a circuit connected in parallel. Thereby, the overall wiring resistance of the second electrode can be lowered. As a result, it is possible to prevent so-called lateral crosstalk from occurring and to prevent display quality from deteriorating.

  In one aspect of the above-described liquid crystal device, the electrode unit includes a plurality of linear conductive parts arranged with a gap therebetween when viewed in plan, and the pixel electrode includes a plurality of transparent conductive parts. And each of the transparent conductive portions is disposed substantially parallel to each of the conductive portions in the plurality of gaps.

  According to this aspect, the electrode portion has the plurality of linear conductive portions that are arranged with a gap therebetween when viewed in plan. The pixel electrode has a plurality of transparent conductive portions. Each of the transparent conductive portions is disposed substantially parallel to each of the conductive portions in the plurality of gaps. Thereby, when this liquid crystal device is driven, a lateral electric field is generated between each conductive portion and each corresponding transparent electrode portion, and the alignment of the liquid crystal can be controlled.

  In another aspect of the above liquid crystal device, the second electrode is formed of tantalum or a material mainly containing tantalum.

  According to this aspect, even when the second electrode is formed of tantalum or the like as a high resistance material, the wiring resistance of the second electrode can be reduced.

  In another aspect of the above liquid crystal device, the electrode unit includes a plurality of other conductive parts in a pixel region, and the plurality of conductive parts and the plurality of other conductive parts are relatively substantially orthogonal to each other. In addition, one end side of the plurality of conductive portions facing the first electrode and the other end side of the plurality of conductive portions facing the one end side are electrically connected to the other conductive portions, respectively. ing.

  In this aspect, the electrode portion has a plurality of other conductive portions in the pixel region. The plurality of conductive portions and the plurality of other conductive portions are relatively substantially orthogonal to each other, and one end side of the plurality of conductive portions facing the first electrode and the other of the plurality of conductive portions facing the one end side. The end sides are each electrically connected to a plurality of other conductive parts. For this reason, this electrode part forms the circuit which connected each of several electroconductive part (resistor) in parallel. As a result, for example, when the resistance of one conductive portion is R1, and the set number of the plurality of conductive portions is N, in this aspect, the resistance of the electrode portion is multiplied by R1 / (1 / N). The size is (R1) / N. For this reason, the second electrode as a whole has a wiring configuration in which a plurality of (R1) / N resistors are connected in series. Therefore, even when the second electrode is formed of tantalum or the like, the wiring resistance of the second electrode can be reduced.

  In another aspect of the liquid crystal device, the two-terminal element includes a first metal film, an insulating film formed on the first metal film, a part on the insulating film, and the vicinity of the first metal film. A second metal film formed at a position corresponding to a part of the other conductive portion, and an insulating film is formed on at least the other conductive portion. A part is opposed to the other conductive part through the insulating film.

  According to this aspect, the two-terminal element includes a first metal film made of, for example, tantalum, an insulating film formed on the first metal film, for example, made of tantalum oxide, a part on the insulating film, and the like. The second metal film is formed at a position corresponding to a part on the other conductive part in the vicinity of the first metal film and made of, for example, chromium. An insulating film is formed at least on the other conductive portion, and a part of the second metal film faces the other conductive portion through the insulating film. As a result, an auxiliary capacitor using the insulating film as a dielectric is formed between a part of the second metal film and the other conductive portion. Therefore, in this liquid crystal device, since the auxiliary capacitance is added to the capacitance of the pixel electrode, the capacitance of the pixel electrode can be substantially increased correspondingly, and the display quality can be prevented from deteriorating.

  In a preferred example, each of the transparent conductive parts extends from a part of the second metal film to a position corresponding to the other conductive part in which the second metal film is not formed in the pixel region. It is formed to exist. Accordingly, a predetermined potential can be applied to each of the transparent electrode portions from the first electrode side via the two-terminal element, and a lateral electric field is generated between each of the transparent electrode portions and each of the conductive portions. Can be generated.

  In addition, an electronic device including the above liquid crystal device as a display portion can be formed.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In the following embodiments, the present invention is applied to a liquid crystal display device.

[Configuration of liquid crystal display device]
First, the configuration of the liquid crystal display device according to the embodiment of the present invention will be described. FIG. 1 is a plan view schematically showing a schematic configuration of a liquid crystal display device 100 of the present invention. In FIG. 1, the configuration of electrodes and wirings of the liquid crystal display device 100 is mainly shown as a plan view. Here, the liquid crystal display device 100 of the present invention is an active matrix drive type liquid crystal display device using a TFD (Thin Film Diode) element. Further, the liquid crystal display device 100 is a so-called lateral electric field type liquid crystal such as an IPS type that controls the orientation of liquid crystal molecules by generating an electric field in a direction substantially parallel to the substrate surface on the substrate side on which the electrodes are formed. It is a display device. For this reason, this liquid crystal display device 100 can obtain a high viewing angle. Further, the liquid crystal display device 100 is also a transmissive liquid crystal display device using an illumination device such as a backlight.

  FIG. 2 is a schematic cross-sectional view taken along a cutting line A-A ′ passing through the electrode portion 32 x that is an element of one data line 32 in the liquid crystal display device 100 of FIG. 1.

  First, a cross-sectional configuration of the liquid crystal display device 100 will be described with reference to FIG. Thereafter, the configuration of the electrodes and wirings of the element substrate 91 will be described. In the present embodiment, the element substrate 91 constitutes a substrate having electrodes and wiring.

  In FIG. 2, the liquid crystal display device 100 includes an element substrate 91 and a color filter substrate 92 disposed so as to face the element substrate 91 via a frame-shaped seal member 3. The liquid crystal layer 4 is formed by enclosing the aligned liquid crystal. Further, in the liquid crystal display device 100, a spacer (not shown) is sealed between the element substrate 91 and the color filter substrate 92, and the both substrates are defined at a constant interval by the spacer.

  On the inner surface of the lower substrate 1, the first conductive portion 32a, the second conductive portion 32b, the third conductive portion 32c, the fourth conductive portion 32d, and the like, which are elements of the data line 32, are provided for each sub-pixel region SG. One electrode part 32x including it is formed. The first conductive portion 32a and the second conductive portion 32b, the second conductive portion 32b and the third conductive portion 32c, and the third conductive portion 32c and the fourth conductive portion 32d are respectively separated from the lower substrate 1 by a predetermined interval. It is arranged on the inner surface. The data line 32 including the electrode part 32x is formed of tantalum or the like. Although an insulating film is formed on the surface of the data line 32, the insulating film is not shown in FIG. 2 for convenience. A TFD element 21 as an example of a two-terminal element is formed on the inner surface of the lower substrate 1 corresponding to the vicinity of the corner position of each sub-pixel region SG. Further, on the inner surface of the lower substrate 1, between the first conductive portion 32 a and the second conductive portion 32 b, between the second conductive portion 32 b and the third conductive portion 32 c, and between the third conductive portion 32 c and the fourth conductive portion. A first transparent electrode portion 10a, a second transparent electrode portion 10b, and a third transparent electrode portion 10c, which are elements of the pixel electrode 10, are formed between 32d. One pixel electrode 10 is constituted by the first transparent electrode portion 10a, the second transparent electrode portion 10b, and the third transparent electrode portion 10c. In addition, scanning lines 31 (also referred to as “wiring” or “leading wiring”) are formed on the left and right peripheral edge portions on the inner surface of the lower substrate 1. The scanning line 31 is formed of chrome. An alignment film 17 is formed on the inner surfaces of the lower substrate 1, the data line 32, the TFD element 21, the pixel electrode 10 and the scanning line 31.

  On the other hand, on the inner surface of the upper substrate 2, colored layers 6R, 6G, and 6B made of one of the three colors R, G, and B are formed for each sub-pixel region SG. The colored layers 6R, 6G, and 6B are opposed to the electrode portion 32x and the pixel electrode 10 in the sub-pixel region SG, respectively. A color filter is constituted by the colored layers 6R, 6G, and 6B. A pixel region G indicates a region for one color pixel composed of R, G, and B sub-pixels. In the following description, when a colored layer is specified regardless of color, it is simply referred to as “colored layer 6”, and when a colored layer is specified by distinguishing colors, it is described as “colored layer 6R”.

  Further, on the inner surface of the upper substrate 2 corresponding to each sub pixel region SG, adjacent sub pixel regions SG are separated to prevent light from being mixed from one sub pixel region SG to the other sub pixel region SG. Therefore, a black light shielding layer BM is formed. The black light shielding layer BM is preferably made of a black resin material, for example, a black pigment dispersed in a resin. In the present invention, instead of this, an overlapping light shielding layer (not shown) formed by overlapping R, G, and B colored layers may be used.

  An overcoat layer 18 made of acrylic resin or the like is formed on the inner surfaces of the colored layer 6 and the black light shielding layer BM. The overcoat layer 18 has a function of protecting the colored layer 6 and the like from corrosion and contamination due to chemicals and the like used during the manufacturing process of the liquid crystal display device 100.

  A polarizing plate 14 is disposed on the outer surface of the lower substrate 1, while a polarizing plate 12 is disposed on the outer surface of the upper substrate 2. A backlight 15 as an illumination device is disposed below the polarizing plate 14. The backlight 15 is preferably a point light source such as an LED (Light Emitting Diode) or a combination of a linear light source such as a cold cathode fluorescent tube and a light guide plate.

  Now, when transmissive display is performed in the liquid crystal display device 100 of the present embodiment, the illumination light emitted from the backlight 15 travels along the path T shown in FIG. 2, and passes through the pixel electrode 10 and the colored layer 6 and the like. Pass through to the observer. In this case, the illumination light has a predetermined hue and brightness by passing through the colored layer 6. Thus, a desired color display image is visually recognized by the observer.

(Element substrate electrode and wiring configuration)
Next, with reference to FIGS. 1 and 3, the configuration of the electrodes and wirings of the element substrate 91 of the present embodiment will be described. FIG. 3 is a plan view showing the configuration of electrodes and wirings of the element substrate 91 when the element substrate 91 is observed from the front direction (that is, the upper side in FIG. 2). In FIG. 3, other elements other than the electrodes and wiring are not shown for convenience of explanation.

  In FIG. 1, a region near a scanning line 31b adjacent to each other at an appropriate interval in the vertical direction on the paper and a data line 32 extending in the vertical direction on the paper are the minimum display unit. A sub-pixel region SG is configured. An area in which a plurality of sub-pixel areas SG are arranged in a matrix in the vertical direction and the horizontal direction in the drawing is an effective display area V (area surrounded by a two-dot chain line). In the effective display area V, images such as letters, numbers, and figures are displayed. 1 and 3, a region defined by the outer periphery of the liquid crystal display device 100 and the effective display region V is a frame region 38 that does not contribute to image display.

  The element substrate 91 includes a TFD element 21, a plurality of pixel electrodes 10, a plurality of scanning lines 31, a plurality of data lines 32, a Y driver IC 33, an X driver IC 34, a plurality of external connection terminals 35, and the like.

  On the projecting region 36 of the element substrate 91, a Y driver IC 33 and an X driver IC 34 are mounted via, for example, an ACF (Anisotropic Conductive Film). In FIG. 3, the direction from the side 91a on the projecting region 36 side of the element substrate 91 to the opposite side 91c is defined as the Y direction, and the direction from the side 91d toward the side 91b is defined as the X direction.

  A plurality of external connection terminals 35 are formed on the overhang region 36. Each input terminal (not shown) of the Y driver IC 33 and the X driver IC 34 is connected to the plurality of external connection terminals 35 through conductive bumps. The external connection terminal 35 is connected to a wiring board (not shown) such as a flexible printed board via ACF or solder. Thereby, for example, signals and power are supplied to the liquid crystal display device 100 from an electronic device such as a mobile phone or an information terminal.

  The output terminal (not shown) of the Y driver IC 33 is connected to the plurality of scanning lines 31 through conductive bumps. The Y driver IC 33 is responsible for driving the plurality of scanning lines 31. That is, the Y driver IC 33 sequentially selects one scanning line 31 at a time in one vertical scanning period, and a scanning signal of the selected voltage is supplied to the selected scanning line 31 while the other scanning lines 31 A scanning signal having a non-select voltage is supplied to the non-selected scanning line 31.

  The output terminal (not shown) of the X driver IC 34 is connected to the plurality of data lines 32 through conductive bumps. The X driver IC 34 is responsible for driving the plurality of data lines 32. That is, the X driver IC 34 supplies a data signal corresponding to the display content to the pixel electrode 10 corresponding to the scanning line 31 selected by the Y driver IC 33 via the corresponding data line 32.

  The plurality of data lines 32 are formed in the Y direction from the overhanging area 36 to the effective display area V, and the data lines 32 are formed at regular intervals. Each data line 32 has one electrode portion 32x for each sub-pixel region SG.

  The plurality of scanning lines 31 includes a main line portion 31a and a bent portion 31b that bends at substantially right angles to the main line portion 31a. Each main line portion 31 a is formed in the Y direction from the projecting region 36 in the frame region 38. On the other hand, each bent portion 31b is formed from the frame region 38 to the effective display region V alternately between the left side and the right side as shown in the figure. In addition, each bent portion 31 b is electrically connected to each corresponding TFD element 21 at an appropriate interval, and each TFD element 21 is electrically connected to each corresponding pixel electrode 10. . FIG. 1 shows a state in which the element substrate 91 and the color filter substrate 92 described above are bonded together via the seal member 3.

  In the liquid crystal display device 100, when a scanning signal is output from the Y driver IC 33 to the plurality of scanning lines 31, and a data signal is output from the X driver IC 34 to the plurality of data lines 32, as shown in FIG. A horizontal electric field E is generated between the electrode portion 32x of 32 and the pixel electrode 10 in a direction substantially parallel to the substrate surface of the element substrate 91, and the alignment of liquid crystal molecules is controlled to control the display state.

(Configuration of element substrate)
Next, the configuration of the element substrate 91 including the data line 32 that characterizes the present invention will be described with reference to FIGS. FIG. 4A is an enlarged partial plan view showing a plurality of electrode portions 32x and the like corresponding to one pixel when the element substrate 91 is observed from the front direction (that is, the upper side in FIG. 2). In FIG. 4A, an insulating film 323 is formed on the surface of the data line 32 and the like, but illustration thereof is omitted for convenience. In FIG. 4A, a region surrounded by an alternate long and short dash line indicates one subpixel region SG. FIG. 4B shows an equivalent circuit corresponding to one electrode portion 32x and the like. Since the liquid crystal display device 100 of the present invention is a high-definition panel, in the equivalent circuit of FIG. 4B, the main line portion 32y, the fifth conductive portion 32e, and the sixth conductive portion 32f, which are elements of the electrode portion 32x. The resistance is ignored, and the first conductive portion 32a, the second conductive portion 32b, the third conductive portion 32c, and the fourth conductive portion 32d, which are elements of the electrode portion 32x, are assumed to have the same resistance (FIG. 7 described later is also omitted). The same). FIG. 5 is a partial cross-sectional view taken along a cutting line BB ′ in FIG. FIG. 6 is a partial cross-sectional view taken along the cutting line X1-X2 in FIG. 4A, and particularly a partial cross-sectional view near the TFD element 21.

  On the lower substrate 1, a plurality of data lines 32, a plurality of scanning lines 31, a plurality of TFD elements 21, a plurality of pixel electrodes 10, and an auxiliary electrode portion 336a are formed. The auxiliary electrode portion 336a is configured using a part of the second metal film 336 (corresponding to a part surrounded by a broken line region) that is an element of the TFD element 21. In the following description, the elements and configurations described above are omitted or simplified.

  Each data line 32 extends in the Y direction as shown in FIG. An insulating film 323 (not shown) is formed on each data line 32 (Note that FIG. 5 shows a state in which this insulating film 323 is formed on each electrode portion 32x). The insulating film 323 is formed to a thickness of about 1500 to 2000 mm. As shown in FIG. 4A, each data line 32 includes a linear main line portion 32y that connects one electrode portion 32x in the sub-pixel region SG and the electrode portions 32x adjacent to each other in the Y direction. It has. That is, each data line 32 has a structure in which a plurality of adjacent electrode portions 32x are connected by a main line portion 32y. Each electrode portion 32x includes a first conductive portion 32a, a second conductive portion 32b, a third conductive portion 32c, and a fourth conductive portion 32d that are substantially striped extending in the Y direction, and a fifth conductive portion extending in the X direction. A portion 32e and a sixth conductive portion 32f are further provided. Here, the fifth conductive portion 32e and the sixth conductive portion 32f are regions surrounded by broken lines, respectively. Gaps 40 are formed between the first conductive portion 32a and the second conductive portion 32b, between the second conductive portion 32b and the third conductive portion 32c, and between the third conductive portion 32c and the fourth conductive portion 32d, respectively. ing.

  Here, when attention is paid to one electrode portion 32xx shown in FIG. 4A, one end side of the main line portion 32y located below the electrode portion 32xx is the other one located below the paper surface of the electrode portion 32xx. The other end side of the main line portion 32y is connected to one end side of the fifth conductive portion 32e of the electrode portion 32xx. The other end side of the fifth conductive portion 32e is connected to one end side of the first conductive portion 32a, the second conductive portion 32b, the third conductive portion 32c, and the fourth conductive portion 32d, and each of the first conductive portions. The other end sides of 32a, the second conductive portion 32b, the third conductive portion 32c, and the fourth conductive portion 32d are connected to one end side of the sixth conductive portion 32f. The other end side of the sixth conductive portion 32f is connected to one end side of the main line portion 32y located above the electrode portion 32xx, and the other end side of the main line portion 32y is on the upper side of the electrode portion 32xx. The other electrode part 32x located is connected to one end side of the fifth conductive part 32e.

  As shown in FIG. 4A, each bent portion 31b, which is an element of each scanning line 31, extends in the X direction at an appropriate interval in the Y direction. The above-described electrode portion 32x is formed for each sub-pixel region SG between the adjacent bent portions 31b.

  Each pixel electrode 10 has a first transparent electrode portion 10a, a second transparent electrode portion 10b, and a third transparent electrode portion 10c for each sub-pixel region SG. The first transparent electrode portion 10a includes a stripe-shaped first portion 10ab extending in the Y direction and an L-shaped second portion 10ac (a portion corresponding to an L-shaped broken line region). The second transparent electrode portion 10b and the third transparent electrode portion 10c are stripe-like electrodes each extending in the Y direction.

  Specifically, the first portion 10ab of the first transparent electrode portion 10a is on the inner surface of the lower substrate 1 at a substantially center in the gap 40 between the first conductive portion 32a and the second conductive portion 32b, and The first conductive portion 32f is formed from one side to the fifth conductive portion 32e. As described above, since the insulating film 323 is formed on the surfaces of the fifth conductive portion 32e and the sixth conductive portion 32f, which are elements of the electrode portion 32x (the same applies to the electrode portion 32xx), the first portion 10ab and the first portion The fifth conductive portion 32e and the sixth conductive portion 32f are not electrically connected. The second portion 10ab of the first transparent electrode portion 10a is formed in an L shape from one side of the fifth conductive portion 32e having the insulating film 323 formed on the surface to the second metal film 336. Therefore, the first transparent electrode portion 10a is electrically connected to the auxiliary electrode portion 336a that is a part of the second metal film 336. The second transparent electrode portion 10b is formed on the inner surface of the lower substrate 1 at the approximate center in the gap 40 between the second conductive portion 32b and the third conductive portion 32c and from one side of the sixth conductive portion 32f. It is formed over the second metal film 336. Therefore, the second transparent electrode portion 10b is electrically connected to the auxiliary electrode portion 336a that is a part of the second metal film 336. Since the insulating film 323 is interposed between the second transparent electrode portion 10b and the fifth conductive portion 32e and the sixth conductive portion 32f, the second transparent electrode portion 10b, the fifth conductive portion 32e and the sixth conductive portion 32f are interposed. The conductive part 32f is not electrically connected. The third transparent electrode portion 10c is located on the inner surface of the lower substrate 1 at the approximate center in the gap 40 between the third conductive portion 32c and the fourth conductive portion 32d and from one side of the sixth conductive portion 32f. It is formed over the second metal film 336. For this reason, the third transparent electrode portion 10 c is electrically connected to the auxiliary electrode portion 336 a that is a part of the second metal film 336. Since the insulating film 323 is interposed between the third transparent electrode portion 10c and the fifth conductive portion 32e and the sixth conductive portion 32f, the third transparent electrode portion 10c, the fifth conductive portion 32e and the sixth conductive portion 32f are interposed. The conductive part 32f is not electrically connected.

  As shown in FIG. 4A, each TFD element 21 is formed in the vicinity of the corner position of each sub-pixel region SG and on the bent portion 31b of each scanning line 31 positioned in the vicinity thereof. In other words, each TFD element 21 is formed in the vicinity of the position where the data line 32 and the bent portion 31b intersect.

As shown in FIG. 6, the TFD element 21 includes a first TFD element 21a and a second TFD element 21b. The first TFD element 21a and the second TFD element 21b include an island-shaped first metal film 322 made of Ta (tantalum) or the like, and Ta formed by anodizing the surface of the first metal film 322. _An insulating film 323 made of ₂ O ₅ or the like, and second metal films 316 and 336 formed on the surface and spaced apart from each other are included. Among these, the second metal films 316 and 336 are formed by patterning the same conductive film such as chromium, and the bent portion 31 b of the scanning line 31 is used for the former second metal film 316. On the other hand, a part of the latter second metal film 336 is also used as the auxiliary electrode portion 336a.

  Here, among the TFD elements 21, the first TFD element 21 a becomes the second metal film 316 / insulating film 323 / first metal film 322 in order when viewed from the bent portion 31 b side of the scanning line 31. Since the metal / insulator / metal structure is adopted, the current-voltage characteristic is nonlinear in both positive and negative directions. On the other hand, the second TFD element 21b becomes a first metal film 322 / insulating film 323 / second metal film 336 in order when viewed from the bent portion 31b side of the scanning line 31, and the first TFD element 21a. Takes the opposite structure. For this reason, the current-voltage characteristics of the second TFD element 21b are obtained by making the current-voltage characteristics of the first TFD element 21a point-symmetric with respect to the origin. As a result, the TFD element 21 has a shape in which two TFDs are connected in series in opposite directions. Therefore, the current-voltage nonlinear characteristic is symmetric in both positive and negative directions compared to the case of using one element. become.

  Further, as shown in FIG. 6, the auxiliary electrode portion 336 a and the fifth conductive portion 32 e of the data line 32 face each other with an insulating film 323 interposed therebetween. Therefore, an auxiliary capacitor C1 using the insulating film 323 as a dielectric is formed between the auxiliary electrode part 336a and the fifth conductive part 32e. Further, each side of the second portion 10ac, the second transparent electrode portion 10b, and the third transparent electrode portion 10c of the first transparent electrode portion 10a is formed on the auxiliary electrode portion 336a, and as described above, The second portion 10ac, the second transparent electrode portion 10b, and the third transparent electrode portion 10c of the transparent electrode portion 10a are electrically connected to the auxiliary electrode portion 336a.

  In the element substrate 91 having the above configuration, the scanning signal output from the Y driver IC 33 is output in the order of the main line portion 31a, the bent portion 31b, the TFD element 21, and the pixel electrode 10, as shown in FIGS. At the same time, the data signal output from the X driver IC 34 is output in the order of the main line portion 32y, the electrode portion 32x, and the main line portion 32y, as shown in FIGS. As a result, as shown in FIG. 5, a lateral electric field E is generated in a direction substantially parallel to the substrate surface of the element substrate 91 and the like, and the orientation of the liquid crystal molecules in the liquid crystal layer 4 is controlled.

  Next, the specific operational effects of the liquid crystal display device 100 of the present invention compared with the comparative example will be described.

  As a comparative example, in an example of an IPS liquid crystal display device having TFT elements, for example, the gate electrodes and the data lines are formed on the element substrate so as to be substantially orthogonal to each other, and the TFT elements are arranged in a matrix at these intersections In each sub-pixel region, the comb-like pixel electrode and the comb-like common electrode (common wiring) are arranged to mesh with each other. That is, in such a liquid crystal display device, since TFT elements are applied, it is necessary to provide at least three wirings of a gate line, a data line, and a common electrode (common wiring).

  On the other hand, in the present invention, the TFD element 21 as an example of a two-terminal element is applied to the IPS liquid crystal display device 100, and the data line 32 is between the data line 32 and the pixel electrode 10. And a function corresponding to the comb-like common electrode for generating the transverse electric field E and a function as a signal line. For this reason, in the liquid crystal display device 100 of the present invention, wiring corresponding to the gate line according to the comparative example is unnecessary, and the above-described IPS system can be realized with only the two wirings of the data line 32 and the scanning line 31. Therefore, compared to the comparative example, the area of the pixel electrode 10 can be increased as much as the number of wirings can be reduced, and the aperture ratio can be improved.

  In the liquid crystal display device 100 of the present invention, the area of the pixel electrode 10 can be increased by the above configuration, but the pixel electrode 10 has a shape similar to a comb-teeth shape. Is still smaller than the area of the sub-pixel region SG. Here, in the liquid crystal display device having the TFD element 21, generally, when the capacity of the pixel electrode is reduced, there is a possibility that the display quality is deteriorated due to this. In this regard, in the present invention, a part of the second metal film 336 that is an element of the TFD element 21 is caused to function as the auxiliary electrode portion 336a, and the fifth conductive of the auxiliary electrode portion 336a and the data line 32 as shown in FIG. An auxiliary capacitor C1 having the insulating film 323 as a dielectric is formed between the portions 32e. Therefore, in the present invention, since the auxiliary capacitance C1 is added to the capacitance of the pixel electrode 10, it is possible to substantially increase the capacitance of the pixel electrode 10 and to prevent the display quality from deteriorating.

  In the present invention, each data line 32 is formed of tantalum. Here, tantalum generally has a sheet resistance of about 20 to 30 times that of chromium, and the resistance value of tantalum is extremely high. For this reason, the wiring resistance of each data line 32 is high. In addition, according to the present invention, the thick insulating film 323, which is a material having higher resistance, is formed on the surface of each data line 32 formed of tantalum, so that the wiring resistance of each data line 32 is further increased. It is high. Here, when the wiring resistance of each data line 32 becomes high, the time constant (product of the capacitor C and the resistance R) by each data line 32 and the liquid crystal layer 4 becomes high, so-called horizontal crosstalk occurs, and the display quality deteriorates. There is a risk of doing. Note that horizontal crosstalk means that the display level differs on the display image even though the same gray level is displayed in the line where the pixel level is concentrated on a specific gray level and the line where the pixel level is not. That means.

  Therefore, in order to prevent such a display defect from occurring, it is necessary to reduce the time constant CR, and for this purpose, it is necessary to reduce the wiring resistance of each data line 32. As the method, for example, a method of reducing the wiring resistance of each data line 32 by contriving the structure of the electrode part 32x formed for each sub-pixel region SG can be considered.

  For example, when the electrode part 32x of each data line 32 is formed in a comb-teeth shape as shown in FIG. 7A, the following will examine the magnitude of the wiring resistance. FIG. 7A is an enlarged partial plan view showing the vicinity of the comb-shaped electrode portion 32x in one subpixel region SG. In FIG. 7A, elements similar to those of the present invention are denoted by the same reference numerals, description thereof is omitted, and illustration of elements other than the data line 32 is omitted. FIG. 7B shows an equivalent circuit including the electrode portion 32x.

  That is, in this example, the resistance of the electrode part 32x from the terminal Z1 to the terminal Z2 is equal to the resistance R1 of the second conductive part 32b. Therefore, when attention is paid to one data line 32, the data line 32 has one second conductive portion 32b (resistor R1) for each sub-pixel region SG. Therefore, it is understood that the data line 32 in this example has a wiring configuration in which a plurality of second conductive portions 32b (resistors R1) are connected in series, and the wiring resistance is extremely high.

  Therefore, in the present invention, based on such a result, in order to reduce the wiring resistance of each data line 32, the electrode part 32x is configured as follows. That is, as shown in FIG. 4A, the electrode portion 32x of the present invention includes a first conductive portion 32a, a second conductive portion 32b, a third conductive portion 32c, and a fourth conductive portion 32d extending in the Y direction. One end side is connected to each of the fifth conductive portions 32e extending in the X direction, and the other end side (one end) of the first conductive portion 32a, the second conductive portion 32b, the third conductive portion 32c, and the fourth conductive portion 32d. The opposite side) is connected to the sixth conductive portion 32f extending in the X direction. Therefore, the electrode part 32x of the present invention includes a first conductive part 32a (resistor R1), a second conductive part 32b (resistor R1), a third conductive part 32c (resistor R1), and a fourth conductive part 32d (resistor R1). Are connected in parallel.

  As a result, in the present invention, the resistance of the electrode portion 32x from the terminal Z1 to the terminal Z2 is a value obtained by multiplying R1 by 1/4, that is, (R1) / 4. Therefore, when attention is paid to one data line 32, the data line 32 has a resistor of (R1) / 4 for each sub-pixel region SG. Therefore, the data line 32 as a whole has a wiring configuration in which a plurality of (R1) / 4 resistors are connected in series. Therefore, in the present invention, the wiring resistance of each data line 32 can be reduced regardless of whether the data line 32 is formed of tantalum or a thick insulating film 323 is formed on the surface thereof. Therefore, in the present invention, it is possible to prevent so-called lateral crosstalk and to prevent display quality from deteriorating.

  In the present invention, each TFD element 21 is formed in the vicinity of the corner position of each sub-pixel region SG and on the bent portion 31b of each scanning line 31 in the vicinity thereof. As a result, the region of the TFD element 21 can be narrowed, and the aperture ratio can be improved accordingly.

[Method of manufacturing liquid crystal display device]
Next, with reference to FIG. 8 thru | or FIG. 11, etc., the manufacturing method of the liquid crystal display device 100 of this invention is demonstrated. In the following, please refer to the above-mentioned appropriate drawings as necessary. FIG. 8 shows a flowchart of a method for manufacturing the liquid crystal display device 100.

  First, the color filter substrate 92 shown in FIGS. 2 and 5 is manufactured by a known method (step S1).

  Next, the element substrate 91 is manufactured (step S2). FIG. 9 is a flowchart showing a method for manufacturing an element substrate corresponding to step S2 in FIG. 10 and 11 are partial plan views corresponding to steps P1 to P13 in FIG. 8, respectively. In FIGS. 10 and 11, the area surrounded by the alternate long and short dash line indicates one subpixel area SG.

  A method for manufacturing the element substrate 91 will be described.

  First, as shown in FIG. 10A, a tantalum film is formed on the lower substrate 1 made of a material such as glass or plastic (process P1), and the tantalum film is patterned into the illustrated shape by etching. (Process P2). Thereby, a tantalum film 350 patterned in a predetermined shape is formed. Thereby, the main line portion 32y, the electrode portion 32x, and the like are formed. Here, the first conductive portion 32a, the second conductive portion 32b, the third conductive portion 32c, the fourth conductive portion 32d, the fifth conductive portion 32e, and the sixth conductive portion 32f, which are elements of the electrode portion 32x, It is formed in the pixel region SG. Further, gaps 40 are formed between the first conductive portion 32a and the second conductive portion 32b, between the second conductive portion 32b and the third conductive portion 32c, and between the third conductive portion 32c and the fourth conductive portion 32d, respectively. Is done. The main line portion 32y is formed between the electrode portions 32x adjacent to each other in the Y direction.

Next, the first anodic oxidation is performed (process P3). Specifically, in FIG. 10A, an insulating film (not shown) made of a Ta ₂ O ₅ film is formed in a thin film on a tantalum film 350 patterned into a predetermined shape by an anodic oxidation method.

  Next, as shown in FIG. 10B, the first separation patterning of the tantalum film 350 is performed (process P4). Specifically, the tantalum film 350 existing in the region where the first metal film 322 that is an element of the TFD element 21 is to be formed is formed in an island shape. Thereby, an island-shaped first metal film 322 having an insulating film formed on the surface is formed.

Next, the second anodic oxidation is performed (process P5). Specifically, in FIG. 10B, an insulating film made of a Ta ₂ O ₅ film is formed to a predetermined thickness on the tantalum film 350 having an insulating film formed on the surface by an anodic oxidation method. Form. In this process P5, the insulating film is not formed on the island-shaped first metal film 322 having the insulating film formed on the surface. As a result, an insulating film 323 is formed on the tantalum film 350. In a suitable example, the thickness of the insulating film 323 can be about 1500 to 2000 mm.

  Next, in FIG. 10B, an annealing process A is performed on the insulating film 323 and the like covering the tantalum film 350 (process P6). Thus, the insulating film 323 can be a dense film.

  Next, in FIG. 10B, the second separation patterning of the tantalum film 350 is performed (step P7). As a result, the excess tantalum film 350 used for anodic oxidation is removed. Thereby, the data line 32 having the insulating film 323 formed on the surface is formed (not shown, see FIG. 5).

  Next, as shown in FIG. 11A, a chromium film (not shown) is formed on the lower substrate 1 and on the first metal film 322 and the data line 32 having an insulating film formed on the surface ( Step P8), followed by patterning the chromium film (Step P9). Thereby, the main line portion 31a (not shown, see FIGS. 1 and 3) and the scanning line 31 having the bent portion 31b are formed. As a result, a second metal film 316 that forms part of the scanning line 31 and an auxiliary electrode portion 336a that is a part of the second metal film 336 are formed, respectively, and the first TFD element 21a and the second TFD element 21a. A TFD element 21 including the TFD element 21b is formed.

  Next, the pixel electrode 10 is formed (process P10). Specifically, as shown in FIG. 11B, the first transparent electrode portion 10a is formed on the lower substrate 1 corresponding to the approximate center of the gap 40 between the first conductive portion 32a and the second conductive portion 32b. The first portion 10ab serving as an element is a second L-shaped second element serving as an element of the first transparent electrode portion 10a on the fifth conductive portion 32e and the second metal film 336, each having an insulating film 323 formed on the surface. Each of the portions 10ac is formed. As a result, the second portion 10ac of the first transparent electrode portion 10a and the second metal film 336 are electrically connected. In addition, the striped second transparent electrode portion 10b is formed on the lower substrate 1 and the second metal film 336 corresponding to substantially the center of the gap 40 between the second conductive portion 32b and the third conductive portion 32c. . Thereby, the 2nd transparent electrode part 10b and the 2nd metal film 336 are electrically connected. Further, the striped third transparent electrode portion 10c is formed on the lower substrate 1 and the second metal film 336 corresponding to substantially the center of the gap 40 between the third conductive portion 32c and the fourth conductive portion 32d. . Thereby, the 3rd transparent electrode part 10c and the 2nd metal film 336 are electrically connected.

  Next, in FIG. 11B, the annealing process B is executed (process P11). The annealing process B (heat treatment B) is performed in order to make the characteristics of the TFD element 21 constant characteristics determined by specifications. Next, in FIG. 11B, the alignment film 17 is formed on the lower substrate 1, the data line 32 having the insulating film 323 formed on the surface, the TFD element 21, the scanning line 31, and the pixel electrode 10 ( Step P12). Next, other components, specifically, a polarizing plate 14 and a backlight 15 (not shown) are attached (process P13). Thus, the element substrate 91 shown in FIGS. 1 to 3 is manufactured.

  Returning to FIG. 8, the element substrate 91 and the color filter substrate 92 are bonded to each other via a spacer and a seal member 3 (not shown), and liquid crystal is injected into the inside through an opening (not shown) formed between the two substrates. Then, the opening is sealed (step S3). Next, the liquid crystal display device 100 of the present invention shown in FIGS. 1 and 2 is manufactured by mounting other components. The liquid crystal display device 100 manufactured in this way can obtain the above-described effects of the present invention.

[Modification]
In the above embodiment, for each sub-pixel region SG, a conductive portion that is substantially parallel to the pixel electrode 10, that is, a first conductive portion 32a, a second conductive portion 32b, a third conductive portion 32c, and a fourth conductive portion 32d are provided. Three pixel electrodes, that is, a first transparent electrode portion 10a, a second transparent electrode portion 10b, and a third transparent electrode portion 10c are provided. In addition to these, in the present invention, the number of settings can be appropriately changed according to design specifications and the like.

  In the above embodiment, the pixel electrode 10 is configured by a plurality of transparent electrode portions, that is, the first transparent electrode portion 10a, the second transparent electrode portion 10b, and the third transparent electrode portion 10c. The present invention is not limited to this, and the pixel electrode 10 may be formed in a comb-like shape, and the one comb-like pixel electrode may be formed for each sub-pixel region SG.

  In the above embodiment, the data line 32 is formed of tantalum. However, the present invention is not limited to this, and in the present invention, the data line 32 is formed of a material mainly composed of tantalum, for example, a material such as tantalum tungsten. You may form in.

  In the above embodiment, the present invention is applied to a transmissive liquid crystal display device. However, the present invention is not limited to this, and the present invention can also be applied to a reflective or transflective liquid crystal display device. It is.

  In the above embodiment, the two-terminal element such as the TFD element 21 is applied to the present invention. However, the present invention is not limited to this, and a three-terminal element such as a TFT element may be applied to the present invention.

[Electronics]
Next, an embodiment in which the liquid crystal display device 100 according to the present invention is used as a display device of an electronic apparatus will be described.

  FIG. 12 is a schematic configuration diagram showing the overall configuration of the present embodiment. The electronic apparatus shown here includes the liquid crystal display device 100 and a control unit 410 that controls the liquid crystal display device 100. Here, the liquid crystal display device 100 is conceptually divided into a panel structure 403 and a drive circuit 402 composed of a semiconductor IC or the like. Further, the control means 410 includes a display information output source 411, a display information processing circuit 412, a power supply circuit 413, and a timing generator 414.

  The display information output source 411 includes a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory), a storage unit such as a magnetic recording disk or an optical recording disk, and a tuning circuit that tunes and outputs a digital image signal. The display information is supplied to the display information processing circuit 412 in the form of an image signal of a predetermined format based on various clock signals generated by the timing generator 414.

  The display information processing circuit 412 includes various well-known circuits such as a serial-parallel conversion circuit, an amplification / inversion circuit, a rotation circuit, a gamma correction circuit, and a clamp circuit, and executes processing of input display information to obtain image information. Are supplied to the drive circuit 402 together with the clock signal CLK. The driving circuit 402 includes a scanning line driving circuit, a data line driving circuit, and an inspection circuit. The power supply circuit 413 supplies a predetermined voltage to each of the above-described components.

  Next, specific examples of electronic devices to which the liquid crystal display device 100 according to the present invention can be applied will be described with reference to FIG.

  First, an example in which the liquid crystal display device 100 according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 13A is a perspective view showing the configuration of this personal computer. As shown in the figure, the personal computer 710 includes a main body 712 having a keyboard 711 and a display 713 to which the liquid crystal display panel according to the present invention is applied.

  Next, an example in which the liquid crystal display device 100 according to the present invention is applied to a display unit of a mobile phone will be described. FIG. 13B is a perspective view showing the configuration of this mobile phone. As shown in the figure, the cellular phone 720 includes a plurality of operation buttons 721, a reception port 722, a transmission port 723, and a display unit 724 to which the liquid crystal display device 100 according to the present invention is applied.

  Note that, as an electronic device to which the liquid crystal display device 100 according to the present invention can be applied, in addition to the personal computer shown in FIG. 13A and the mobile phone shown in FIG. Type / monitor direct-view type video tape recorder, car navigation device, pager, electronic notebook, calculator, word processor, workstation, videophone, POS terminal, digital still camera, etc.

FIG. 3 is a plan view showing a configuration of electrodes and wirings of the liquid crystal display device of the present invention. FIG. 2 is a cross-sectional view of the liquid crystal display device taken along a cutting line A-A ′ in FIG. 1. The top view which shows the structure of the electrode of the element substrate of this invention, wiring, etc. FIG. FIG. 4 is a partial plan view showing a layout of pixel electrodes and the like for one pixel in an element substrate and a block diagram showing an equivalent circuit including an electrode portion of a data line. FIG. 5 is a partial cross-sectional view of the element substrate along a cutting line B-B ′ in FIG. 4. FIG. 5 is an enlarged cross-sectional view showing the configuration of the TFD element and the like along the cutting line X1-X2 in FIG. The fragmentary top view corresponding to the electrode part etc. of the data line which concerns on a comparative example, and the block diagram which shows the equivalent circuit containing the said electrode part. 3 is a flowchart showing a method for manufacturing a liquid crystal display device of the present invention. The flowchart which shows the manufacturing method of the element substrate of this invention. The top view corresponding to each manufacturing process of the element substrate in FIG. The top view corresponding to each manufacturing process of the element substrate in FIG. 1 is a circuit block diagram of an electronic apparatus to which a liquid crystal display device of the present invention is applied. 6 shows examples of electronic devices to which the liquid crystal display device of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower substrate, 2 Upper substrate, 3 Sealing member, 6 Colored layer, 10 Pixel electrode, 17 Alignment film, 18 Overcoat layer, 21 TFD element, 32 Data line, 32x electrode part, 32y Main line part, 31 Scan line, 91 element substrate, 92 color filter substrate, 100 liquid crystal display device

Claims (8)

A plurality of first electrodes;
A two-terminal element connected to the first electrode;
A pixel electrode connected to the two-terminal element;
A plurality of second electrodes that intersect with the plurality of first electrodes and generate an electric field between the pixel electrodes;
The second electrode has a plurality of electrode portions branched from the second electrode, and the pixel electrode is provided between the plurality of electrode portions,
The liquid crystal device, wherein the plurality of electrode portions form a circuit connected in parallel. A plurality of first electrodes;
A pixel electrode disposed between the first electrodes adjacent to each other;
A plurality of second electrodes that intersect the plurality of first electrodes and generate an electric field between the pixel electrodes;
A three-terminal element provided corresponding to an intersection position of the first electrode and the second electrode and connected to the first electrode, the second electrode, and the pixel electrode;
The second electrode has a plurality of electrode portions branched from the second electrode, and the pixel electrode is provided between the plurality of electrode portions,
The liquid crystal device, wherein the plurality of electrode portions form a circuit connected in parallel. The electrode part has a plurality of linear conductive parts arranged with a gap therebetween when viewed in plan, and the pixel electrode has a plurality of transparent conductive parts,
3. The liquid crystal device according to claim 1, wherein each of the transparent conductive portions is disposed substantially parallel to each of the conductive portions in the plurality of gaps.   3. The liquid crystal device according to claim 1, wherein the second electrode is formed of tantalum or a material containing tantalum as a main component. The electrode portion has a plurality of other conductive portions in the pixel region,
The plurality of conductive portions and the plurality of other conductive portions are relatively substantially orthogonal,
One end side of the plurality of conductive portions facing the first electrode and the other end side of the plurality of conductive portions facing the one end side are electrically connected to the plurality of other conductive portions, respectively. The liquid crystal device according to claim 3. The two-terminal element includes a first metal film, an insulating film formed on the first metal film, a part on the insulating film, and a part on the other conductive portion in the vicinity of the first metal film. And a second metal film formed at a position corresponding to
6. The insulating film is formed on the other conductive portion, and a part of the second metal film is opposed to the other conductive portion via the insulating film. The liquid crystal device described.   Each of the transparent conductive portions extends from a part of the second metal film to a position near a position corresponding to the other conductive portion where the second metal film is not formed in the pixel region. The liquid crystal device according to claim 6. An electronic apparatus comprising the liquid crystal device according to claim 1 as a display unit.

Images