WO2006129466A1

WO2006129466A1 - Active matrix board and liquid crystal display apparatus

Info

Publication number: WO2006129466A1
Application number: PCT/JP2006/309591
Authority: WO
Inventors: Hironobu Sawada; Toshiaki Fujihara
Original assignee: Sharp Kabushiki Kaisha
Priority date: 2005-06-03
Filing date: 2006-05-12
Publication date: 2006-12-07

Abstract

An active matrix board comprises a plurality of pixel electrodes, which are arranged in matrix and to which image signals are supplied, and a plurality of data lines which extend in parallel with each other and which supply the image signals to the associated pixel electrodes. The arrangement pattern of the pixel electrodes and data lines in the board is such that between a single pixel electrode and a data line which is not associated with the single pixel electrode, there intervenes at least one of the pixel electrodes or the data line associated with that single pixel electrode. This arrangement pattern can reduce the influence, on the pixel electrodes, of the parasitic capacitance occurring between a single pixel electrode and the data line associated with a pixel electrode adjacent to that single pixel electrode without necessity of adding any conventional components.

Description

Specification

Active matrix substrate and liquid crystal display device

Technical field

The present invention relates to an active matrix substrate using a switching element for each pixel and an active matrix liquid crystal display device using the same.

Background art

In recent years, an active matrix liquid crystal display device in which a TFT [Thin Film Transistor] is connected to each pixel as a switching element has been widely used as a liquid crystal display device. Along with this, improvement research on the liquid crystal display device has been earnestly advanced, and the technical results are as described in, for example, Patent Document 1 and Patent Document 2. Here, an outline of a conventional liquid crystal display device will be described below.

FIG. 7 is a diagram showing an overall configuration of an active matrix substrate used in an active matrix liquid crystal display device, and FIG. 8 is an enlarged view of a pixel peripheral portion therein. As shown in the figure, the gate line driver 101 is connected to a plurality of gate lines 103 extending in the row direction, and the data line driver 102 is connected to a plurality of data lines 104 extending in the column direction. The pixel electrode 106 is connected to the intersection of the gate line 103 and the data line 104 via a TFT 105 as a switching element.

[0004] A driving procedure of a liquid crystal display device using the conventional active matrix substrate will be briefly described. First, when driving is started, a voltage as a scanning signal is applied from the gate line driver 101 to the gate electrode of the TFT 105 in the first row. As a result, the source electrode 105b and the drain electrode 105c of each TFT 105 in the first row connected to the gate line 103 become conductive.

Then, a voltage as an image signal is applied to the data line 104, and a charge corresponding to the image signal is supplied to the pixel electrode 106 via the source electrode 105b and the drain electrode 105c of the TFT related to the pixel in the first row. The Note that when a scanning signal is applied from the gate line 103, the TFT 105 is not electrically connected to the source electrode 105b and the drain electrode 105c, so that no charge is supplied to the pixel electrode 106.

Next, a scanning signal is applied from the gate line driver 101 to the gate line 103 in the second row. In the same manner as described above, the charge corresponding to the image signal is supplied to the pixel electrode 106 related to the pixel in the second row. In this way, charges corresponding to the image signal are sequentially supplied to the pixel electrodes 106 in each row. The charge supplied to each pixel electrode 106 is held until the next scanning.

[0007] The pixel electrode 106 can hold the supplied electric charge by an electrode on the substrate side and an electrode on the counter substrate provided facing the substrate with the liquid crystal portion interposed therebetween. Then, the optical rotation of the liquid crystal is adjusted according to the voltage state between the two electrodes, and the pixel display is performed by adjusting the light transmission amount. By driving the liquid crystal display device as described above, a desired image can be displayed.

Patent Document 1: JP-A-11-231343

Patent Document 2: JP 2001-272654

Patent Document 3: JP 2004-206089

Disclosure of the invention

Problems to be solved by the invention

[0008] By the way, conventionally, in designing an active matrix substrate, as described in Patent Document 1 and Patent Document 2, it is a problem to cope with parasitic capacitance that causes deterioration in image quality of the display device. . First, this parasitic capacitance will be described below.

FIG. 9 shows an equivalent circuit around the pixel on the substrate. As shown by the solid line in the figure, there is an electric capacity around the pixel as an electric capacity by a pixel electrode for controlling the optical rotation of the liquid crystal (hereinafter referred to as “liquid crystal capacity”) 131 and an applied voltage of the pixel electrode. In order to hold the voltage, an electric capacity (hereinafter referred to as “holding capacity”) 132 by a holding electrode provided in parallel with the liquid crystal capacity is intentionally provided.

On the other hand, since the gate line 103, the data line 104, the TFT 105, and the pixel electrode 106 are adjacently disposed around the pixel, a parasitic capacitance is unintentionally generated in that portion. Specifically, as shown by the dotted line in the figure, the main one is the parasitic capacitance (hereinafter referred to as `` Csd '') generated between the arbitrarily selected pixel electrode (n) and the data line 104a corresponding to the pixel electrode. 133a, the parasitic capacitance generated between the pixel electrode (n) and the data line 104b not corresponding to the pixel electrode (hereinafter referred to as “Csd (other)”) 133b, the pixel electrode (n ) And its pixel electrode Parasitic capacitance generated between the corresponding gate line 103a (hereinafter referred to as "Cgd (self)") 133c, parasitic generated between the pixel electrode (n) and the gate line 103b that does not correspond to the pixel electrode Capacity (hereinafter referred to as “Cgd (other)”) 133d. Since these unintentionally affect the voltage state of the pixel electrode, they generally cause degradation of image quality.

[0011] Among the parasitic capacitances described above, Csd (self) 133a and Csd (other) 133b, which are parasitic capacitances generated between the pixel electrode 106 and the data line 104, have an effect on the voltage state of the pixel electrode. Relatively large. This is because the data line 104, which is the cause of these parasitic capacitances, supplies image signals one after another to the pixels in the corresponding column for each row, so that the applied voltage continuously fluctuates. That is, as a result of the unstable voltage state of the adjacent pixel electrode 106 due to the influence of the applied voltage that constantly fluctuates in the data line 104, the image quality may be greatly degraded.

[0012] When a multi-view display is adopted, the influence of Csd (other) 133b on the pixel electrode is particularly serious. Here, the multi-view display is, for example, as described in Patent Document 3 in which left-view display pixels and right-view display pixels are alternately arranged in the horizontal direction, and a predetermined parallax barrier is provided. It is a display that can display different display images from two directions (left viewing side and right viewing side).

[0013] FIG. 10 briefly shows an image display mechanism in a multi-view display in order to explain the above reason. In the panel display shown in the figure, the non-colored portion represents the left-view display pixel, and the colored portion represents the right-view display pixel. In this way, by alternately arranging the left-view display pixels and the right-view display pixels in the horizontal direction, it is possible to make the image appear wide on the entire display regardless of the field of view. It is.

On the other hand, in the conventional example illustrated in FIG. 8, on the right side of each pixel electrode 106, there is a data line 104 corresponding to the pixel electrode in the right adjacent column. Will be affected by Csd (others) 133b. Then, in a multi-view display, the pixel electrode in the adjacent column as viewed from each pixel electrode 106 relates to a different field of view, so the voltage state of each pixel electrode 106 is not related to the display content and is not related to other fields of view. As a result, the data line 104 on the side is affected. [0015] For this reason, for example, assuming a state in which a single color display is performed on the left visual field display side and a multicolor display is performed on the right visual field display side and V, the left visual field display side displays a single color display (the image signal of each row). The voltage state of the pixel electrode 106 is a multicolor display (the size of the image signal in each row can fluctuate greatly), but the right visual field display side. Due to the voltage fluctuation of the data line 104, the image quality may be greatly degraded.

[0016] Because of the above circumstances, in order to maintain good image quality in an active matrix liquid crystal display device, it is necessary to reduce the influence of Csd (self) or Csd (other) on the voltage state of the pixel electrode. is there. In particular, in the case of a multi-view display, it is necessary to reduce the influence of Csd (other) on the voltage state of the pixel electrode. In addition, it is desirable that such problems be solved without adding new parts or the like in order to prevent the cost from being increased compared to conventional products.

Therefore, in view of the above problems, the present invention can reduce the influence of the parasitic capacitance Csd (other) on the voltage state of the pixel electrode without adding components from the conventional product. An object of the present invention is to provide an active matrix substrate and an active matrix liquid crystal display device.

Means for solving the problem

In order to achieve the above object, an active matrix substrate according to the present invention is arranged in a matrix and extends in parallel with a plurality of pixel electrodes to which image signals are supplied. An active matrix substrate on which a plurality of data lines for supplying image signals to the electrodes are arranged, and then, regarding the arrangement pattern of the pixel electrodes and the data lines on the substrate, one pixel electrode and the one pixel At least one pixel electrode or a data line corresponding to one pixel electrode is interposed between the data lines not corresponding to the electrodes (first configuration). .

According to this configuration, one pixel electrode or the one pixel electrode is necessarily provided between one pixel electrode and a data line not corresponding to the one pixel electrode on the substrate. One of the corresponding data lines is interposed. For this reason, in the portion where one pixel electrode is interposed between the two, the distance between the two is sufficiently large, so that Csd (others) can be kept small. In the portion where the data line corresponding to the one pixel electrode is interposed between the two, Since the data line force shields the electric field generated between the two, Csd (others) can be kept small.

[0020] In addition, this configuration is mainly achieved by changing the arrangement of the pixel electrodes and the data lines compared to the conventional active matrix substrate.ヽ. Therefore, even if this configuration is applied to a product, the cost does not increase compared to the conventional product.

The active matrix substrate according to the present invention is arranged in a matrix and extends in parallel with a plurality of pixel electrodes to which image signals are supplied, and supplies the image signals to the corresponding pixel electrodes. An active matrix substrate on which a plurality of data lines are arranged, and the arrangement pattern of the pixel electrodes and the data lines on the substrate is a set of two pixel electrodes adjacent to each other in a direction perpendicular to the data lines. A data line corresponding to each of the set of pixel electrodes passes between the pixel electrodes and one pixel electrode in the set; and a data line corresponding to the other pixel electrode; In the meantime, a configuration (second configuration) in which a data line corresponding to the one pixel electrode is interposed is described.

[0022] According to this configuration, there is necessarily one pixel electrode or the data line between one pixel electrode and the data line existing on both sides of the data line related to the one pixel electrode. One of the data lines corresponding to one pixel electrode is interposed. Therefore, the operational effects obtained by the first configuration can be realized.

[0023] Further, in the second configuration, the one pixel electrode and the data line corresponding to the other pixel electrode are connected in the thickness direction of the substrate. It is also possible to have a configuration (third configuration) that does not overlap each other.

[0024] With this configuration, the one pixel electrode can avoid the influence of the electric field generated in the thickness direction of the substrate by the data line corresponding to the other pixel electrode, so that the Csd generated between them can be avoided. (Others) can be further reduced.

[0025] In any one of the first to third configurations, a configuration in which the long side direction of the pixel electrode is orthogonal to the data line with respect to the orientation of the pixel electrode provided on the substrate (fourth configuration) It is good. In this way, the distance between one pixel electrode and the data line corresponding to the adjacent pixel electrode can be further increased, so that Csd (others) can be further reduced. [0026] Further, in the active matrix liquid crystal display device using the active matrix substrate having any one of the first to fourth configurations described above, the influence of the Csd (other) on the voltage state of the pixel electrode is suppressed. As a result, a liquid crystal display in which deterioration in image quality is minimized is realized.

[0027] In addition, the multi-field display type active matrix liquid crystal display device using the active matrix substrate having any one of the first to fourth configurations described above reduces the influence of Csd (others) on the pixel electrode. By suppressing the liquid crystal display, it is possible to realize a liquid crystal display in which the deterioration of the image quality is suppressed as much as possible. Further, since the voltage state of the pixel electrode is less affected by the data line on the other visual field side that has nothing to do with the display content, the deterioration of the image quality can be suppressed also in this respect.

The invention's effect

[0028] As described above, in the active matrix substrate according to the present invention, there is always a gap between one pixel electrode and a data line not corresponding to the one pixel electrode on the substrate. Either one pixel electrode or a data line corresponding to the one pixel electrode intervenes! For this reason, in the portion where one pixel electrode is interposed between the two, the distance between the two is sufficiently large, so that Csd (other) can be kept small. Further, in the portion where the data line corresponding to the one pixel electrode is interposed between the two, since the electric field generated between the data line force and the both is shielded, Csd (other) can be suppressed to a small value.

As a result, in the active matrix liquid crystal display device using the substrate of the present invention, a liquid crystal display in which the deterioration in image quality caused by the influence of the Csd (other) on the voltage state of the pixel electrode is suppressed as much as possible. Is realized. In particular, in the case of a multi-view display type active matrix liquid crystal display device, the voltage state of the pixel electrode is less affected by the data line on the other view side which has nothing to do with the display contents. However, it is possible to suppress a decrease in the image quality.

[0030] Further, the active matrix substrate according to the present invention is achieved mainly by changing the arrangement of the pixel electrodes and the data lines with respect to the conventional active matrix substrate. Is not accompanied. Therefore, even if this configuration is applied to a product, it will not be more expensive than a conventional product.

Brief Description of Drawings FIG. 1 is a configuration diagram showing an overall configuration of a substrate according to the present embodiment.

FIG. 2 is a configuration diagram showing a configuration around a pixel of a substrate according to the present embodiment.

FIG. 3 is an explanatory diagram showing an equivalent circuit around a pixel of the substrate according to the present embodiment.

FIG. 4 is an explanatory diagram showing a state of an electric field between a pixel electrode and a data line in a conventional substrate.

FIG. 5 is an explanatory diagram showing a state of an electric field between a pixel electrode and a data line in the present embodiment.

FIG. 6 is a configuration diagram showing a configuration when horizontally long pixels are used in the present embodiment.

FIG. 7 is a configuration diagram showing an overall configuration of a substrate in the prior art.

FIG. 8 is a configuration diagram showing a configuration around a pixel of a substrate in the prior art.

FIG. 9 is an explanatory diagram showing an equivalent circuit around a pixel of a substrate in the prior art.

FIG. 10 is an explanatory diagram showing an image display mechanism in a multi-view display.

Explanation of symbols

1, 101 Gate line driver

2, 102 Data line driver

3, 103 Gate line

4, 104 data lines

5, 105 TFT

5a, 105a Gate electrode

5b ゝ 105b Source electrode

5c, 105c drain electrode

6, 106 pixel electrodes

7, 107 Holding electrode

31, 131 LCD capacity

32, 132 Holding capacity

133a Parasitic capacitance Csd (self)

33b ゝ 133b Parasitic capacitance Csd (other)

53c, 133c Parasitic capacitance Cgd (self) 33d, 133d Parasitic capacitance Cgd (other)

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows the overall configuration of the substrate in the embodiment of the present invention, and FIG. 2 shows an enlarged view around the pixel electrode in the substrate. As shown in the figure, the substrate includes a gate line driver 1, a data line driver 2, a gate line 3, a data line 4, a TFT 5, a pixel electrode 6, and the like.

The gate line driver 1 is connected to a plurality of gate lines 3, and has a selector (not shown) that selects one of the gate lines 3 related to a row to be scanned. Then, the gate line driver 1 applies a scanning signal (voltage) only to the gate line 3 selected by the selector, so that the voltage is applied to the gate electrode 5a of the TFT 5 in that row, and the source electrode 5b and drain Conduct the electrode 5c.

[0035] The data line driver is connected to two and a plurality of data lines 4, and applies an image signal (voltage) corresponding to a display image to each data line. As a result, an image signal is supplied to the pixel electrode 6 through the TFT 5 in which the gate electrode is turned on.

[0036] A plurality of gate lines 3 are provided so as to extend in the horizontal scanning direction corresponding to the pixels arranged on the substrate, and the gate line driver 1 and the gate of the TFT 5 in the row related to the gate line are provided. To the electrode 5a. As a result, the gate line driver 1 plays a role of transmitting the scanning signal sequentially output to the TFT 5 belonging to the row.

[0037] A plurality of data lines 4 are provided so as to extend in the vertical direction corresponding to the pixels arranged on the substrate, and the data line driver 2 and the TFT 5 of the column related to the data line 4 are provided. Connect to source electrode 5b. Thus, the image signal output from the data line driver 2 is supplied to the corresponding pixel electrode 6 via the TFT 5 belonging to the column.

The TFT 5 has three electrodes, a gate electrode 5a, a source electrode 5b, and a drain electrode 5c. The gate electrode 5a is connected to the gate line 3, and the source electrode 5b is connected to the data line 4. The drain electrode 5c is connected to one of the pixel electrode 6 and the holding electrode. Thus, only when a scanning signal (gate voltage) is applied, it serves as a switching means for conducting an image signal from the source electrode 5b to the drain electrode 5c.

The pixel electrode 6 is arranged in a matrix on the substrate, and corresponds to an electrode provided opposite to the liquid crystal unit, and an image signal supplied from the data line 4 via the TFT 5 It is possible to hold a charge corresponding to the voltage and generate a voltage between the electrodes. By holding the charge in this way, a potential difference is generated between the electrodes, and the amount of light transmitted through the liquid crystal panel can be changed by adjusting the optical rotation of the liquid crystal existing between the electrodes. The shape of the pixel electrode can be arbitrary, but in this embodiment, the shape of the pixel electrode is such that each of the red (R), green (G), and blue (B) pixels is almost square. Is a rectangle with the RGB array direction as the short side.

In the present embodiment, regarding the arrangement pattern of the pixel electrodes 6 and the data lines 4 on the substrate, two pixel electrodes adjacent to each other in the direction perpendicular to the data lines are taken as a set, and the set of pixel electrodes The data line corresponding to each passes between the pixel electrodes, and between one pixel electrode in the set and the data line corresponding to the other pixel electrode, the one pixel electrode is connected to the one pixel electrode. Arranged so that the corresponding data line is interposed.

[0041] For example, referring to FIG. 2, the pixel electrode (n-1) and the pixel electrode (n) form a pair, and the pixel electrode (n + 1) and the pixel electrode (n + 2) form a single string. . And on the pixel electrode (n-1) and the pixel electrode (n + 1)! /, On the right side of it, on the pixel electrode (n) and the pixel electrode (n + 2)! /, On the left side of it, Data lines corresponding to each are arranged. This is completely different from the conventional technology. By doing so, it is possible to minimize the degradation of image quality due to the parasitic capacitance Csd (others). The reason for this will be described later.

Next, a method for driving the active matrix liquid crystal display device of this embodiment will be described. The driving method is basically the same as that of the prior art.

First, a scanning signal is applied to the gate line 3 in the first row when driving is started. Thereby, the source electrode 5b and the drain electrode 5c of each TFT 5 connected to the gate line 3 are conducted. Then, the image signal force applied to the data line 4 is supplied to the pixel electrode 6 via the source electrode 5b and the drain electrode 5c in the first row. In the V ヽ TFT 5 to which no scanning signal is applied from the gate line 3, the source electrode 5 b and the drain electrode 5 c are electrically connected to each other, so that no charge is supplied to the pixel electrode 6.

Next, a scanning signal is applied from the gate line driver 1 to the gate line 3 in the second row, and an image signal is supplied to the pixel electrode 6 related to the pixel in the second row in the same manner as described above. The In the following manner, image signals are sequentially supplied to the pixel electrodes 6 in each row, and the scanning is completed until the last row is scanned. When finished, go back to the first line and repeat. The electric charge supplied to each pixel electrode 6 according to the image signal is held as it is until the next scanning of the row is performed.

On the other hand, in the pixel electrode 6, a voltage state corresponding to an image signal is generated between the electrodes. As a result, the optical rotation of the liquid crystal existing between the electrodes is adjusted, and the pixel display is performed by adjusting the amount of transmitted light.

Here, in order to consider the generation state of the parasitic capacitance in this embodiment, an equivalent circuit around the arbitrarily selected pixel electrode (n) is shown in FIG. As shown by the solid line in the figure, as an electric capacity, a liquid crystal capacity 31 by a pixel electrode for controlling the optical rotation of the liquid crystal, and a holding electrode provided in parallel with the liquid crystal capacity to hold an applied voltage of the pixel electrode A holding capacity of 32 is intentionally provided.

[0047] As the parasitic capacitance generated around the pixel electrode (n), as indicated by the dotted line in the figure, Csd (self-generated) between the pixel electrode (n) and the data line 4a corresponding to the pixel electrode ) 33a, Cgd generated between the pixel electrode (n) and the gate line 3a corresponding to the pixel electrode (c) 33c, Gate line 3b corresponding to another pixel electrode adjacent to the pixel electrode (n) in the vertical direction The existence of Cgd (other) 33d that occurs between the two is the same as that of the prior art.

[0048] A parasitic capacitance generated by the relationship between the pixel electrode (n) and the data line corresponding to the pixel electrode adjacent in the horizontal direction! Looking first, the relationship between the pixel electrode (n) and the data line 4c related to the pixel electrode (n + 1) is that there is a sufficient distance between the two because the pixel electrode (n + 1) is interposed between them. It is kept. For this reason, the parasitic capacitance generated between the two is very small, and the voltage state at the pixel electrode (n) is hardly affected by the parasitic capacitance.

[0049] Further, in the relationship between the pixel electrode (n) and the pixel electrode (n-1) such data line 4b, the data line 4a is interposed between the two, so that the parasitic capacitance generated between the two is present. Is kept low. Here, the reason why the parasitic capacitance can be kept small by the interposition of the data line 4a will be described below with reference to FIG. 4 and FIG.

FIG. 4 shows a state of an electric field generated by the relationship between the pixel electrode (m), the pixel electrode (m + 1), and the data line corresponding to the pixel electrode (m + 1) in the conventional substrate. As shown in the figure, the pixel electrode and the data line are provided close to each other, and only the insulating film is provided between them. Intervene. Therefore, when looking at the cross section of the substrate, the data line corresponding to the pixel electrode (m) almost acts as an electrostatic shield against the electric field between the pixel electrode (m) and the pixel electrode (m + 1). Absent. As a result, the pixel electrode (m) is greatly affected by the electric field generated by the data line corresponding to the pixel electrode (m + 1), and parasitic capacitance is easily generated.

On the other hand, FIG. 5 shows a state of an electric field generated in the relationship between the pixel electrode (n-1), the pixel electrode (n), the data line 4a, and the data line 4b in the present embodiment. As shown in the figure, a data line 4a consisting only of an insulating film is interposed between the pixel electrode (n) and the data line 4b. Here, “between the pixel electrode (n) and the data line 4b” means “the pixel electrode (n) and the data line 4b in the horizontal direction (A′—direction in the figure) with respect to each center position”. Means between. According to FIG. 5, it can be said that the position X (4a) of the data line 4a is between the position X (n) of the pixel electrode (n) and the position X (4b) of the data line 4b.

Therefore, regarding the cross section of the substrate, the electric field between the data line 4b and the pixel electrode (n) is largely shielded (electrostatic shield) by the data line 4a controlled to a predetermined potential. Therefore, as compared with the conventional one, the parasitic capacitance generated between the pixel electrode (n) and the data line 4b is reduced by the amount that the influence of the electric field is shielded by the data line 4a.

[0053] Further, as in the present embodiment, even if the distance between the pixel electrode (n) and the data line 4b is made larger than the conventional one, the electric field generated between the pixel electrode (n) and the data line 4b is weakened. I can do it. Thus, from the viewpoint of reducing parasitic capacitance, it is desirable to make the distance between the pixel electrode (n) and the data line 4b as large as possible within the range that can secure the required number of pixels V. If the pixel electrode (n) and the data line 4b are arranged so as to overlap each other in the thickness direction of the substrate, the pixel electrode (n) is strongly influenced by the electric field generated in the thickness direction of the substrate by the data line 4b. There is a fear. Therefore, in order to avoid such a situation, it is preferable to arrange the pixel electrode (n) and the data line 4b so as not to overlap each other in the thickness direction of the substrate.

As described above, in the present embodiment, regarding the arrangement pattern of the pixel electrodes and the data lines on the substrate, at least between one pixel electrode and the data line not corresponding to the one pixel electrode. Since either one pixel electrode or a data line corresponding to the one pixel electrode is interposed, the influence of the parasitic capacitance Csd (other) on the voltage state of the pixel electrode is small. It will be suppressed.

Furthermore, since the present embodiment is achieved mainly by changing the arrangement of the pixel electrodes and the data lines in the conventional technology, it is not necessary to reduce the number of pixels compared to the conventional technology. Moreover, it is not necessary to add new parts. Therefore, even if this embodiment is applied to an actual product, the cost is not increased as compared with the conventional product.

Further, in the above-described embodiment, the force in which the pixels of red (R) green (G) blue (B) are arranged in the horizontal direction (direction in which the gate line extends), for example, as shown in FIG. The pixels may be configured by arranging RGB pixels (horizontal pixels) in the direction in which the data lines extend. Thus, the distance between the pixel electrode (n) and the data line 4c is further increased if the long side direction of the pixel electrode is orthogonal to the data line in the direction of the pixel electrode provided on the substrate. Therefore, it is possible to further reduce the parasitic capacitance generated between the two. In addition, by arranging the pixel electrodes in such a direction, the ratio (influence) of Csd (others) to the total pixel capacity can be reduced.

If an active matrix liquid crystal display device is configured using the substrate of the present embodiment described above, the deterioration of image quality is suppressed as much as possible by minimizing the influence of Csd (others) on the pixel electrode. Liquid crystal display is possible.

Further, a multi-view display type active matrix liquid crystal display device can be configured using the substrate of the present embodiment. In this way, as described above, the influence of Csd (others) on the pixel electrode can be kept small, as well as the data line on the other viewing side where the voltage state of the pixel electrode has nothing to do with the display contents. Therefore, the deterioration of image quality can be suppressed in this respect as well. Since the configuration of the multi-view display itself is a known technique as described in Patent Document 3 and the like, detailed description thereof is omitted.

In addition to the above-described embodiment, the configuration of the present invention can be variously modified without departing from the gist of the invention. For example, in the active matrix substrate of the present embodiment, in addition to the force that applies the arrangement pattern according to the present invention to the entire range, it is also possible to apply the pattern to a portion where it is particularly desired to suppress degradation of image quality. It is.

Claims

The scope of the claims

[1] A plurality of pixel electrodes arranged in a matrix and supplied with image signals;

A plurality of data lines that extend in parallel with each other and supply image signals to the corresponding pixel electrodes are disposed on an active matrix substrate, and

Regarding the arrangement pattern of the pixel electrode and the data line on the substrate, at least one pixel electrode or the one pixel is provided between one pixel electrode and a data line not corresponding to the one pixel electrode. An active matrix substrate, characterized in that any of the data lines corresponding to the electrodes is disposed.

[2] A plurality of pixel electrodes arranged in a matrix and supplied with image signals;

With respect to the arrangement pattern of the pixel electrodes and the data lines on the substrate, two pixel electrodes adjacent to each other in a direction orthogonal to the data lines are taken as a set, and the data line corresponding to each of the set of pixel electrodes is the pixel A data line corresponding to the one pixel electrode is interposed between the one pixel electrode in the set and the data line corresponding to the other pixel electrode. An active matrix substrate characterized by its arrangement.

[3] Regarding the above arrangement pattern,

3. The device according to claim 2, wherein the one pixel electrode and the data line corresponding to the other pixel electrode are arranged so as not to overlap each other in the thickness direction of the substrate. Active matrix substrate.

4. The direction of the pixel electrode provided on the substrate is such that the long side direction of the pixel electrode is orthogonal to the data line. Active matrix substrate.

[5] An active matrix liquid crystal display device using the active matrix substrate according to any one of claims 1 to 4.

[6] A multi-view display type active matrix liquid crystal display device characterized by using the active matrix substrate according to any one of claims 1 to 4.