JP5453841B2 - Electro-optic device - Google Patents

Description

  The present invention relates to a technical field of an electro-optical device such as a liquid crystal device provided with a dummy pixel electrode that is provided around a display region and does not directly contribute to image display or a peripheral pixel electrode arranged in the periphery thereof. .

  In a liquid crystal device which is an example of this type of electro-optical device, dummy pixel electrodes and the like are formed substantially around the display area for displaying an image. The dummy pixel electrode or the like is configured using, for example, a transparent material such as ITO, which is the same type of material as the pixel electrode provided in each of the plurality of pixel portions constituting the display area. Such a dummy pixel electrode or the like is provided in order to reduce a level difference that may occur between the display region and its peripheral region. According to the dummy pixel electrode or the like, when the alignment film is rubbed, the rubbing unevenness generated in the alignment film can be reduced due to a step between the display region and the peripheral region.

  Further, in such a liquid crystal device, a display area in which a plurality of pixel electrodes are arranged in a matrix is formed by a FIB (Focus Ion Beam) method at the time of failure analysis for analyzing whether or not a failure has occurred in a pixel portion. After shaving and exposing the observation surface, the quality of the pixel portion is analyzed. The position of the pixel portion to be analyzed, in other words, the pixel portion to be analyzed is a pixel portion corresponding to a pixel electrode arranged at any position among a plurality of pixel electrodes arranged in a matrix in the display area. The address in the display area indicating whether or not is normally specified by counting the dummy pixel electrodes sequentially from the dummy pixel electrodes arranged at the ends of the plurality of dummy pixel electrodes arranged.

  On the other hand, a semiconductor device having an index that can specify an address of an arbitrary semiconductor element among a plurality of semiconductor elements arranged one-dimensionally or two-dimensionally has been proposed (for example, see Patent Document 1).

JP-A-7-99230

  However, for the purpose of specifying the address of the pixel part to be analyzed, when counting a plurality of dummy pixel electrodes etc. from the end or counting while marking the dummy pixel electrodes etc. at regular intervals However, there are problems in that it takes time for analysis and count errors are likely to occur.

  Therefore, the present invention has been made in view of the above problems and the like, and provides an electro-optical device such as a liquid crystal device that can accurately specify the address of a pixel portion to be analyzed without much effort, for example. This is the issue.

In order to solve the above problems, an electro-optical device according to the present invention has a plurality of pixel electrodes arranged in a matrix in a display area on a substrate, a dummy pixel area outside the display area, and the dummy pixel. A plurality of peripheral pixel electrodes and a plurality of mark portions provided at a predetermined address specifying pitch for specifying addresses of the plurality of peripheral pixel electrodes outside the region; The peripheral pixel electrode includes a first peripheral pixel electrode, a second peripheral pixel electrode adjacent to the first peripheral pixel electrode in the first direction, and a second direction intersecting the first peripheral pixel electrode and the first direction. 3, the first and second peripheral pixel electrodes are provided adjacent to the dummy pixel region, and the third peripheral pixel electrode is the first peripheral pixel electrode. of It is provided on the opposite side to the dummy pixel region side, and at least one mark portion of the plurality of mark portions is formed in an island shape so as to overlap each end portion of the first and second peripheral pixel electrodes. Formed in an island shape so as to overlap the first sub-mark extending in the first direction and the respective end portions of the first and third peripheral pixel electrodes, and extending in the second direction. 2 sub-marks.
The one mark portion has a third sub-mark in which a part of the third peripheral pixel electrode is opened.

  According to the electro-optical device according to the present invention, the plurality of pixel electrodes are made of a transparent conductive material such as ITO, for example, and the display region occupies a part of the display region on the substrate, that is, the electro-optical device. In a region where an image is substantially displayed during the operation, a row direction corresponding to each of the row direction and the column direction along the row direction in the display region and the column direction intersecting the row direction, respectively. They are arranged in a matrix with a pitch and a pitch in the column direction. More specifically, for example, a plurality of scanning lines and a plurality of data lines intersecting each other are formed in the display area, and each of the plurality of pixel electrodes corresponds to the intersection of the scanning lines and the data lines. Are arranged. The row direction pitch is a width of an interval separating two pixel electrodes adjacent to each other in the row direction among the plurality of pixel electrodes. As in the row direction pitch, the column direction pitch means a width of an interval separating two pixel electrodes adjacent to each other along the column direction among the plurality of pixel electrodes.

  A plurality of first peripheral pixel electrode portions are arranged on the one of the row direction pitch and the column direction pitch in a first non-display region extending along one of the row direction and the column direction outside the display region. They are arranged along the one side with a corresponding first pitch. The first non-display area is an area that does not contribute to image display during the operation of the electro-optical device. For example, in the liquid crystal device, the first non-display area is an area provided in order to reduce uneven rubbing of the alignment film. The plurality of first peripheral pixel electrodes are configured using, for example, the same type of material as the pixel electrodes formed in the display region.

  The first mark portion and the second mark portion may include one first peripheral pixel electrode portion separated from each other by a first address specifying pitch along the one of the plurality of first peripheral pixel electrode portions, and another Each of the first peripheral pixel electrode portions is formed on each of the first peripheral pixel electrode portions so that the addresses of the first peripheral pixel electrode portion and the other first peripheral pixel electrode portions can be specified along the one side. Different identification indices.

  The first address specifying pitch is a pitch that can be set practically so that the addresses of one first peripheral pixel electrode and another first peripheral pixel electrode can be specified. The identification index is an index that can optically distinguish the mark portions from each other, such as the shape of the mark portions.

  Therefore, according to the electro-optical device according to the present invention, at the time of analysis for analyzing whether or not a failure occurs in the electro-optical device, the addresses of the one peripheral pixel electrode unit and the other peripheral pixel electrodes are respectively set. Based on this, it is possible to specify the address of the pixel electrode along one side. More specifically, the pixel part having the pixel electrode whose address is specified is the pixel part arranged from the end along one of the pixel parts arranged in a matrix. The address can be specified quickly and accurately with minimal effort.

  In one aspect of the electro-optical device according to the present invention, the one first peripheral pixel electrode portion includes a plurality of first sub-peripheral pixel electrodes, and the other first peripheral pixel electrode portions include a plurality of the first peripheral pixel electrode portions. Second sub-peripheral pixel electrodes, and the first mark portion can be distinguished from each other by a combination of modes of the plurality of sub-marks formed on each of the plurality of first sub-peripheral pixel electrodes. The plurality of second mark portions can be distinguished from each other by a combination of modes of the plurality of sub-marks formed on each of the plurality of second sub-peripheral pixel electrodes. May have an identification function.

  According to this aspect, since the degree of freedom of the display mode of the identification function can be expanded, more specifically when one of the number of rows and the number of columns that define the arrangement state of the pixel electrodes formed in the display area increases. Even when the display area is enlarged or the pitch of the pixel electrodes along one of them is reduced, the first mark portion and the second mark portion can be distinguished from each other.

  In another aspect of the electro-optical device according to the aspect of the invention, in the second non-display area arranged along the other direction of the row direction and the column direction outside the display area, the second direction is along the other direction. And a plurality of second peripheral pixel electrode portions arranged at a second pitch, and one of the plurality of second peripheral pixel electrode portions spaced apart from each other by a second address specifying pitch along the other direction. Formed in each of the second peripheral pixel electrode portion and the other second peripheral pixel electrode portion, and the one second peripheral pixel electrode portion and the other second peripheral pixel electrode portion along the other direction. You may provide the 3rd mark part and 4th mark part from which a planar shape mutually differs so that each address can be specified.

  According to this aspect, the address of the pixel electrode can be specified along the other as well as the address of the pixel electrode can be specified along the other. Therefore, according to this aspect, the address of the pixel electrode can be specified in two dimensions.

  In this aspect, the one second peripheral pixel electrode portion is composed of a plurality of third sub-peripheral pixel electrodes, and the other second peripheral pixel electrode portion is composed of a plurality of fourth sub-peripheral pixel electrodes. The third mark portion has a plurality of identification functions that can be distinguished from each other by a combination of modes of the plurality of sub-marks formed on each of the plurality of third sub-peripheral pixel electrodes. The fourth mark portion may have a plurality of identification functions that can be distinguished from each other by a combination of modes of the plurality of sub-marks formed on each of the plurality of fourth sub-peripheral pixel electrodes. Good.

  According to this aspect, since the degree of freedom of the display mode of the identification function can be expanded along the other, the other of the number of rows and the number of columns that define the arrangement state of the pixel electrodes formed in the display area increases. More specifically, the third mark portion and the fourth mark portion can be distinguished from each other even when the display area is enlarged or the pitch of the pixel electrodes along the other is reduced.

  Such an operation and other advantages of the present invention will become apparent from the embodiments described below.

It is a top view of the liquid crystal panel manufactured by the manufacturing method of the liquid crystal device concerning this embodiment. It is II-II 'sectional drawing of FIG. 3 is a plan view conceptually showing the configuration of an image display area of the liquid crystal device according to the present embodiment. FIG. FIG. 4 is a plan view showing a region R1 shown in FIG. 3 partially enlarged. FIG. 4 is a plan view illustrating a partially enlarged region R2 illustrated in FIG. 3. It is the top view which expanded and showed a part of image display area concerning the modification of the liquid crystal device concerning this embodiment.

  Hereinafter, a liquid crystal device 1 which is an embodiment of an electro-optical device according to the invention will be described with reference to the drawings.

<1: Liquid crystal device>
<1-1: Overall Configuration of Liquid Crystal Device>
First, the overall configuration of the liquid crystal device 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic plan view of a liquid crystal device 1 when a TFT array substrate is viewed from the side of a counter substrate together with each component formed thereon, and FIG. 2 is a cross-sectional view taken along the line II-II ′ of FIG. It is. Here, a TFT active matrix driving type liquid crystal device with a built-in driving circuit is taken as an example.

  1 and 2, in the liquid crystal device 1, a TFT array substrate 10, which is an example of the “substrate” of the present invention, and a counter substrate 20 are disposed to face each other. A liquid crystal layer 50 is sealed between the TFT array substrate 10 and the counter substrate 20, and the TFT array substrate 10 and the counter substrate 20 are sealed by a seal material 52 provided in a seal region located around the pixel region 10A. They are glued together.

  The sealing material 52 is made of, for example, an ultraviolet curable resin, a thermosetting resin, or the like for bonding the two substrates, and is applied on the TFT array substrate 10 in the manufacturing process and then cured by ultraviolet irradiation, heating, or the like. It is. In the sealing material 52, a gap material such as glass fiber or glass beads for dispersing the distance (inter-substrate gap) between the TFT array substrate 10 and the counter substrate 20 to a predetermined value is dispersed.

  A light-shielding frame light-shielding film 53 that defines the frame region of the pixel region 10A is provided on the counter substrate 20 side in parallel with the inside of the seal region where the sealing material 52 is disposed. However, part or all of the frame light shielding film 53 may be provided as a built-in light shielding film on the TFT array substrate 10 side.

  In the peripheral region located around the pixel region 10A, the data line driving circuit 101 and the external circuit connection terminal 102 are provided on one side of the TFT array substrate 10 in the region located outside the seal region where the sealant 52 is disposed. It is provided along. The scanning line driving circuit 104 is provided along one of the two sides adjacent to the one side so as to be covered with the frame light shielding film 53. The scanning line driving circuit 104 may be provided along two sides adjacent to one side of the TFT array substrate 10 provided with the data line driving circuit 101 and the external circuit connection terminal 102. In this case, the two scanning line driving circuits 104 are connected to each other by a plurality of wirings provided along the remaining one side of the TFT array substrate 10.

  The data line driving circuit 101 and the scanning line driving circuit 104 are driven by the power supply VDD and VSS supplied from a power supply circuit (not shown) and the common potential LCCOM when the liquid crystal device 1 operates.

  Vertical conductive members 106 functioning as vertical conductive terminals between the two substrates are disposed at the four corners of the counter substrate 20. On the other hand, the TFT array substrate 10 is provided with vertical conduction terminals in a region facing these corner portions. Thus, electrical conduction can be established between the TFT array substrate 10 and the counter substrate 20.

  In FIG. 2, a pixel electrode 9a is formed on a TFT array substrate 10 after a pixel switching TFT, a scanning line, a data line and the like are formed, and an alignment film is formed thereon. Yes. On the other hand, on the counter substrate 20, in addition to the counter electrode 21, a lattice-shaped or striped light-shielding film 23 and an alignment film are formed on the uppermost layer portion. The liquid crystal layer 50 is made of, for example, a liquid crystal in which one or several types of nematic liquid crystals are mixed, and takes a predetermined alignment state between the pair of alignment films.

  Although not shown in FIGS. 1 and 2, on the TFT array substrate 10, in addition to the data line driving circuit 101, the scanning line driving circuit 104, etc., an image signal is sampled to form data lines as will be described later. A sampling circuit for supplying is provided.

  Next, the configuration of the pixel region 10A of the liquid crystal device 1 will be described with reference to FIG. FIG. 3 is a plan view conceptually showing the configuration of the pixel region 10A of the liquid crystal device 1 according to this embodiment.

  As shown in FIG. 3, the planar shape of the pixel region 10 </ b> A is a rectangular shape defined by edges extending along the X direction (row direction) and the Y direction (column direction) in the drawing on the TFT array substrate 10. It is. The pixel area 10A includes a display area 10Aa, a dummy pixel area 10Ab, and a non-display area 10Ac.

  The display area 10 </ b> Aa occupies a portion near the center of the TFT array substrate 10 in the pixel area 10 </ b> A, and is an area that substantially displays an image when the liquid crystal device 1 is operated. More specifically, the display area 10Aa includes a plurality of pixel portions each having pixel electrodes arranged in a matrix along the row direction that is the X direction and the column direction that is the Y direction in the drawing. This is a provided area, and when the liquid crystal device 1 is in operation, the luminance of each pixel unit is set according to the image signal to display an image.

  The dummy pixel area 10Ab is a frame-shaped area surrounding the display area 10Aa. The dummy pixel region 10Ab is a region where a dummy pixel electrode as a dummy is formed.

  The non-display area 10Ac is a frame-shaped area surrounding the dummy pixel area 10Ab. The non-display area 10Ac includes a first non-display area 10Ac-1 extending in the column direction and a second non-display area 10Ac-2 extending in the row direction. In the present embodiment, an example of “one direction of the row direction and the column direction” of the present invention is the column direction.

  The non-display area 10Ac is an area where a plurality of peripheral pixel electrodes that do not contribute to the display of the liquid crystal device 1 are formed. Such peripheral pixel electrodes are formed in the same pattern as the pixel electrodes using the same kind of material as the plurality of pixel electrodes formed in the display area 10Aa. Therefore, in the liquid crystal device 1, the level difference between the display area 10Aa and the dummy pixel area 10Ab and the non-display area 10Ac is reduced, and the pixel electrodes and the peripheral pixel electrodes are extended from the display area 10Aa to the non-display area 10Ac. The rubbing unevenness that may occur when the alignment film formed on the substrate is rubbed is reduced as compared with the case where the non-display region 10Ac is not provided.

  Next, a detailed configuration of each of the regions R1 and R2 in FIG. 3 will be described with reference to FIGS. FIG. 4 is a plan view showing a region R1 shown in FIG. 3 partially enlarged. FIG. 5 is a plan view showing a partially enlarged region R2 shown in FIG.

  As shown in FIG. 4, the liquid crystal device 1 includes a plurality of pixel electrodes 9a, a plurality of dummy pixel electrodes 9b, a plurality of peripheral pixel electrodes 9c1, and a first mark portion MA10 and a second mark portion MA50.

  The plurality of pixel electrodes 9a are respectively arranged in the row direction and the column direction along the row direction and the column direction in the display area 10Aa in the display area 10Aa occupying a part of the pixel area 10A on the TFT array substrate 10, respectively. They are arranged in a matrix with corresponding row direction pitches Px and column direction pitches Py. The pixel electrode 9a is a transparent electrode made of a transparent conductive material such as ITO. The column direction pitch Py is an example of the “first pitch” in the present invention. The row direction pitch Px is an example of the “second pitch” in the present invention.

  The plurality of dummy pixel electrodes 9b have the same configuration as the pixel electrode 9a. The dummy pixel electrode 9b is arranged in the dummy pixel region 10Ab corresponding to each of the plurality of dummy pixel portions provided in the dummy pixel region 10Ab.

  The plurality of peripheral pixel electrodes 9c1 are formed in the first non-display area 10Ac-1 extending along the column direction in the non-display area 10Ac. Among the plurality of peripheral pixel electrodes 9c1, a plurality of peripheral pixel electrode groups each including six peripheral pixel electrodes 9c1 arranged at a pitch of 50 rows along the column direction are the first peripheral pixel electrode portions A1 and A2. Is configured. In the present embodiment, only two first peripheral pixel electrode portions A1 and A2 are shown in the drawing for convenience of explanation, but the liquid crystal device 1 is an example of the “first address specifying pitch” of the present invention 50. A plurality of first peripheral pixel electrode portions are provided as a group of six peripheral pixel electrodes for each row pitch. In the present embodiment, the first peripheral pixel electrode portion A1 is an example of “one first peripheral pixel electrode portion” of the present invention, and the first peripheral pixel electrode portion A2 is “another first peripheral pixel electrode” of the present invention. It is an example of a “pixel electrode part”. The six peripheral pixel electrodes 9c1 constituting the first peripheral pixel electrode portion A1 are an example of the “first sub-peripheral pixel electrode” of the present invention, and the six peripheral pixel electrodes 9c1 constituting the first peripheral pixel electrode portion A2 are included. This is an example of the “second sub-peripheral pixel electrode” in the present invention.

  Each of the first peripheral pixel electrode portions A1 and A2 is separated from each other by a pitch of 50 rows along the column direction. Each of the first peripheral pixel electrode portions A1 and A2 only needs to include a plurality of peripheral pixel electrodes 9c1.

  The first mark portion MA10 is formed across the peripheral pixel electrode 9c1 formed in each of the 10th and 11th rows of the peripheral pixel electrode 9c1 constituting the first peripheral pixel electrode portion A1. In the present embodiment, since the first mark part MA10 is composed of one submark MA10-1, the first mark part MA10 and the submark MA10-1 are composed of the same part. However, the first mark portion MA10 may be composed of a plurality of submarks.

  The second mark portion MA50 is formed across the peripheral pixel electrode 9c1 formed in each of the 50th and 51st rows of the peripheral pixel electrode 9c1 constituting the first peripheral pixel electrode portion A2. The second mark part MA50 includes sub marks MA50-1 and MA50-2.

  The first mark part MA10 and the second mark part MA50 have identification indexes having different planar shapes from each other so that the addresses of the first peripheral pixel electrode parts A1 and A2 can be specified along the column direction. ing. Here, “address” refers to the row number in which each of the first peripheral pixel electrode portions A1 and A2 is arranged. More specifically, for example, the addresses of the first peripheral pixel electrode portion A1 are the 10th and 11th rows, and the addresses of the first peripheral pixel electrode portion A2 are the 50th and 51st rows.

  The first mark part MA10 and the second mark part MA50 are distinguished from each other so that the addresses of the first peripheral pixel electrode parts A1 and A2 separated from each other by 50 row pitches along the column direction can be specified. Has indicators. In other words, the sub-mark MA10-1 and the sub-marks MA50-1 and MA50-2 are optically connected to each other in the first mark portion MA10 and the second mark according to various forms of shapes, colors, or combinations thereof. It is an identification index configured to be able to identify the mark part MA50. Further, the first mark portion MA10 and the second mark portion MA50 may be formed by extending the same material as the peripheral pixel electrode 9c1 or a part of the peripheral pixel electrode 9c1 toward the adjacent peripheral pixel electrode 9c1. Good.

  Therefore, according to the liquid crystal device 1, in the analysis for analyzing whether or not the liquid crystal device 1 is defective, based on the addresses of the peripheral pixel electrode portion A 1 and the peripheral pixel electrode portion A 2, The address of the pixel electrode 9a along the line can be specified. More specifically, by referring to the first mark part MA10 at the time of analysis, for example, the address along the column direction of the pixel electrode 9a arranged in the same row as the first peripheral pixel electrode part A1 is With the mark part MA10 as a clue, it can be immediately and accurately specified as the 10th or 11th line. In addition, the address along the column direction of the pixel electrode 9a arranged in the same row as the first peripheral pixel electrode portion A2 is immediately and accurately in the 50th or 51st row with the second mark portion MA50 as a clue. It can be specified that there is. In addition, the addresses of the pixel electrodes 9a arranged in the 10th to 50th rows are counted by counting the number of pixel electrodes 9a to be analyzed in a state where no mark portion is provided. As compared with the case of specifying the address, the first mark part MA10 and the second mark part MA50 can be specified accurately. In other words, according to the liquid crystal device 1, for the pixel portion having the pixel electrode 9 a whose address is specified, the pixel arranged from the end along the column direction among the pixel portions arranged in a matrix form It is possible to quickly and accurately specify the address of whether the part is a part or not as much as possible.

  In addition, according to the liquid crystal device 1, the number of mark portions arranged at a constant row pitch (for example, 50 row pitch in the present embodiment) along the column direction increases the size of the display area 10 </ b> A or the pixels. Even if the line pitch is increased by reducing the row pitch of the parts, it is possible to specify the addresses of the plurality of mark parts by increasing the combinations of display forms of sub-marks constituting each mark part, that is, variations. In addition, the plurality of mark portions can be distinguished from each other.

  As shown in FIG. 5, the liquid crystal device 1 has a second non-display area 10Ac that extends outside the display area 10Aa and extends in the row direction, which is an example of “the other direction of the row direction and the column direction” of the present invention. 2, a plurality of second peripheral pixel electrode portions B1 and B2 arranged along the row direction at the row direction pitch Px, and an example of the “second address specifying pitch” of the present invention along the row direction. A third mark portion MB10 and a fourth mark portion MB50 are provided on the second peripheral pixel electrode portions B1 and B2 that are separated from each other by a certain pitch of 50 columns.

  In the liquid crystal device 1, for the purpose of specifying an address along the row direction of the pixel portion, similarly to the first mark portion MA10 and the second mark portion MA50 arranged along the column direction described above, A third mark part MB10 and a fourth mark part MB50 are arranged along the line.

  The plurality of peripheral pixel electrodes 9c2 are also formed in the second non-display area 10Ac-2 extending along the row direction in the non-display area 10Ac. Among the plurality of peripheral pixel electrodes 9c1, a plurality of peripheral pixel electrode groups each including six peripheral pixel electrodes 9c2 arranged at a pitch of 50 columns along the row direction are respectively included in the second peripheral pixel electrode portions B1 and B2. Is configured. In the present embodiment, only two second peripheral pixel electrode portions B1 and B2 are shown in the drawing for convenience of explanation, but the liquid crystal device 1 is an example of the “second address specifying pitch” of the present invention 50. A plurality of second peripheral pixel electrode portions that are a group of six peripheral pixel electrodes are provided for each column pitch. In the present embodiment, the second peripheral pixel electrode part B1 is an example of “one second peripheral pixel electrode part” of the present invention, and the second peripheral pixel electrode part B2 is “another second peripheral pixel part” of the present invention. It is an example of a “pixel electrode part”. The six peripheral pixel electrodes 9c2 constituting the second peripheral pixel electrode part B1 are an example of the “third sub-peripheral pixel electrode” of the present invention, and the six peripheral pixel electrodes 9c2 constituting the second peripheral pixel electrode part B2 This is an example of the “fourth sub-peripheral pixel electrode” in the present invention.

  Each of the second peripheral pixel electrode portions B1 and B2 is provided to be separated from each other by a pitch of 50 columns along the row direction. Each of the second peripheral pixel electrode portions B1 and B2 only needs to include a plurality of peripheral pixel electrodes 9c1.

  The third mark part MB10 is formed across the peripheral pixel electrodes 9c2 formed in the tenth and eleventh columns of the peripheral pixel electrodes 9c2 constituting the second peripheral pixel electrode part B1. In the present embodiment, since the second mark part MB10 is composed of one submark MB10-1, the third mark part MB10 and the submark MB10-1 are composed of the same part. However, the third mark part MB10 may be composed of a plurality of submarks.

  The fourth mark part MB50 is formed across the peripheral pixel electrode 9c2 formed in each of the 50th and 51st columns of the peripheral pixel electrode 9c2 constituting the second peripheral pixel electrode part B2. The fourth mark part MB50 includes sub marks MB50-1 and MB50-2.

  The third mark part MB10 and the fourth mark part MB50 have different identification indices so that the addresses of the second peripheral pixel electrode parts B1 and B2 can be specified along the row direction. Here, the “address” refers to a column number in which each of the second peripheral pixel electrode portions B1 and B2 is arranged. More specifically, for example, the addresses of the second peripheral pixel electrode portion B1 are the 10th and 11th columns, and the addresses of the second peripheral pixel electrode portion B50 are the 50th and 51st columns.

  The third mark part MB10 and the fourth mark part MB50 are each planar in shape so that the addresses of the second peripheral pixel electrode parts B1 and B50 separated from each other by 50 column pitches along the row direction can be specified. Have different identification indices. In other words, the sub-mark MB10-1 and the sub-marks MB50-1 and MB50-2 are optically reciprocally connected to the third mark part MB10 and the fourth mark according to various forms of shapes, colors, or combinations thereof. It is an identification index configured to be able to identify the mark part MB50. The third mark part MB10 and the fourth mark part MB50 may be formed by simultaneously patterning the same film as the peripheral pixel electrode 9c1, that is, the same transparent conductive film. That is, a part of the peripheral pixel electrode 9c2 may be formed by extending toward the adjacent peripheral pixel electrode 9c2.

  Therefore, according to the liquid crystal device 1, in the analysis for analyzing whether or not a defect occurs in the liquid crystal device 1, the row direction is determined based on the addresses of the peripheral pixel electrode portion B 1 and the peripheral pixel electrode portion B 2. The address of the pixel electrode 9a along the line can be specified. More specifically, by referring to the third mark part MB10 at the time of analysis, for example, the address along the row direction of the pixel electrode 9a arranged in the same row as the second peripheral pixel electrode part B1 is the third address With the mark part MB10 as a clue, it can be immediately and accurately identified as the 10th or 11th column. The address along the row direction of the pixel electrode 9a arranged in the same row as the second peripheral pixel electrode portion B2 is immediately and accurately in the 50th column or 51st column with the fourth mark unit MB50 as a clue. It can be specified that there is. In addition, the addresses of the pixel electrodes 9a arranged in the 10th to 50th columns are not provided with mark portions by counting the number of pixel electrodes 9a to be analyzed. Compared with the case where it specifies with a state, it becomes possible to specify correctly 3rd mark part MB10 and 4th mark part MB50 as a clue. In other words, according to the liquid crystal device 1, for the pixel unit having the pixel electrode 9 a whose address is specified, the pixel unit arranged from the end along the row direction among the pixel units arranged in a matrix. It is possible to quickly and accurately specify the address of whether the part is a part or not as much as possible.

  In addition, according to the liquid crystal device 1, the number of mark portions arranged at a constant row pitch (in this embodiment, for example, 50 column pitch) along the row direction increases the size of the display area 10 </ b> A or the pixels. Even if the line pitch is increased by reducing the row pitch of the parts, it is possible to specify the addresses of the plurality of mark parts by increasing the combinations of display forms of sub-marks constituting each mark part, that is, variations. In addition, the plurality of mark portions can be distinguished from each other.

  Therefore, according to the liquid crystal device 1 according to the present embodiment, as described with reference to FIGS. 4 and 5, the two-dimensional address of the pixel portion formed in the display area 10 </ b> Aa, in other words, the row direction and Both addresses along the column direction can be accurately specified by referring to each mark portion.

(Modification)
Next, a modification of the liquid crystal device 1 will be described with reference to FIG. FIG. 6 is a plan view showing the configuration of a region corresponding to the region R1 shown in FIG. 5 in the pixel region 10A of the liquid crystal device according to the modification. In the following, the same reference numerals are assigned to the portions common to the liquid crystal device 1 described above, and detailed description thereof is omitted.

  In the liquid crystal device according to this example, the display forms of the sub-marks constituting each of the first mark part MA100 and the second mark part MA150 are different from each other. More specifically, the first mark portion MA100 includes rectangular submarks MA100-1, MA100-2, and MA100-3, and an opening in which a circular shape such as a black circle or a part of a peripheral pixel electrode is opened. It is comprised by the combination with submark MA100-4 which consists of. The second mark part MA150 includes rectangular submarks MA150-1, MA150-2, and MA150-3, and a circular mark such as a black circle or a submark MA150- formed of an opening part of a peripheral pixel electrode. 4 and MA150-5. As described above, according to the mark portion configured by combining the optically readable indices such as the direction in which the sub mark extends, the planar shape, the position, and the color, even when the number of mark portions is increased, They can be distinguished from each other. In this example, the range from the 97th line to the 152th line among a plurality of pixel parts constituting the display area 10Aa is taken as an example, but the liquid crystal device is configured by a pixel part having a larger number of lines. Even so, for example, the address of the pixel portion can be specified at a pitch of 50 rows.

  In this example, the case where the address of the pixel portion is specified along the column direction is taken as an example. However, as with the liquid crystal device 1 described above, the address of the pixel portion along the row direction is also assigned to each mark portion. This can be specified by increasing the number of display modes that combine optically readable indices such as the extending direction, planar shape, position, and color of the constituent sub-marks.

  9a ... pixel electrode, 9b ... dummy pixel electrode, 9c1, 9c2 ... peripheral pixel electrode, MA10, MA100 ... first mark part, MA50, MA150 ... second mark part, MB10 ...・ 3rd mark part, MB50 ... 4th mark part

Claims (2)

A plurality of pixel electrodes arranged in a matrix in a display area on the substrate;
Outside the display area, a dummy pixel area,
Provided outside the dummy pixel region are a plurality of peripheral pixel electrodes and a plurality of mark portions provided at a predetermined address specifying pitch for specifying addresses of the plurality of peripheral pixel electrodes and having different planar shapes. ,
The plurality of peripheral pixel electrodes include a first peripheral pixel electrode, a second peripheral pixel electrode adjacent to the first peripheral pixel electrode in the first direction, and a first crossing with the first peripheral pixel electrode and the first direction. A third peripheral pixel electrode adjacent in two directions,
The first and second peripheral pixel electrodes are provided adjacent to the dummy pixel region, respectively, and the third peripheral pixel electrode is provided on the opposite side of the first peripheral pixel electrode from the dummy pixel region side. And
At least one mark portion of the plurality of mark portions is formed in an island shape so as to overlap each end portion of the first and second peripheral pixel electrodes, and extends in the first direction. And an electro-optical device, wherein the second sub-mark is formed in an island shape so as to overlap each end portion of the first and third peripheral pixel electrodes and extends in the second direction.   2. The electro-optical device according to claim 1, wherein the one mark portion includes a third sub-mark in which a part of the third peripheral pixel electrode is opened.

Images