TW581921B - Liquid crystal display device - Google Patents

Abstract

A first substrate includes, on one side thereof that is closer to a liquid crystal layer, a picture element electrode provided for each picture element region, a switching element, and a bus line. A second substrate includes a counter electrode opposing the picture element electrode. The picture element electrode includes a plurality of openings and a solid portion that includes a plurality of unit solid portions. In each picture element region, the liquid crystal layer takes a vertical alignment in the absence of an applied voltage, and forms a plurality of liquid crystal domains, each of which takes a radially-inclined orientation, in the plurality of openings and the solid portion by inclined electric fields produced at respective edge portions of the plurality of openings of the picture element electrode in response to an applied voltage. In each picture element region, at least one of the plurality of openings of the picture element electrode that is located along the bus line and located between two adjacent ones of the plurality of unit solid portions is superposed on the bus line.

Description

581921 发明 发明, description of the invention (the description of the invention should state: the technical field to which the invention belongs, the prior art, the content, the embodiments, and the simple description of the drawings) BACKGROUND OF THE INVENTION 1. TECHNICAL FIELD The present invention relates to a liquid crystal display device. That is, it relates to a liquid crystal display device with a wide viewing angle characteristic and capable of producing a high-quality display. 2. Prior art In recent years, thin and light liquid crystal display devices have been used in personal computer displays and PDA (Personal Digital Assistant) displays. However, the conventional twisted nematic (TN) type and super twisted nematic (STN) type liquid crystal display devices have very narrow viewing angles. Various technologies have been developed to solve this problem. A typical technique for improving the viewing angle of a TN or STN type liquid crystal display device is to add a light compensation plate thereto. Another method is to use a transverse electric field mode, in which an electric field that is horizontal with respect to the plane of the substrate is applied throughout the liquid crystal layer. In recent years, a liquid crystal display device in a lateral electric field mode has become the focus of much attention and has been mass-produced. Another technique is to use DAP (Vertical Alignment Phase Deformation) mode, in which a nematic liquid crystal material with negative induced anisotropy is used as the liquid crystal material, and a vertical alignment film is used as the alignment film. This is an ECB (electrically controlled birefringence) mode, where the transmittance is controlled by the birefringence of the liquid crystal module. Although the lateral electric field mode is an effective way to improve the viewing angle, compared with the general TN type device, the manufacturing tolerance value of the process is very low, so the device cannot be stably manufactured. This is because the brightness or contrast of the display will be significantly affected by the gap between these substrates, or it may be significantly 581921 (2) I Invention Description The page is affected by the transmission axis (polarization axis) of the polarizing plate with respect to these liquid crystal modes. The effect of the misalignment of the alignment axis. It requires further technological development to accurately control these factors in order to stably manufacture the device. In order to be able to use the liquid crystal display device of the D A P mode to achieve the purpose of uniform display without displaying uneven results, it is necessary to perform alignment control. For example, alignment control can be performed by aligning the surface of the alignment film by rubbing. However, when the rubbing treatment is performed on the vertically aligned film, it is very easy for rubbing streaks to appear in the display image, so it is not suitable for mass production. Another method proposed in the prior art that can perform alignment control without using friction treatment is to form slits (openings) in the electrodes to generate a tilted electric field, and use the tilted electric field to control the alignment of the liquid crystal modules ( (For example, Japanese Patent Laid-open Application Nos. 6-301036 and 2000-47217). However, the inventor of the present case, after reading the published applications, found that in the disclosed methods, the orientation in the region of the liquid crystal layer with respect to the openings of the electrode was not defined. The alignment of the group cannot be sufficiently continuous, and it is difficult to achieve the purpose of stable alignment in each picture element, which will cause uneven display. In view of this, R & D institutions including some of the inventors of this case have proposed another method (Japanese Patent Application No. 2000-244648), in which one of a pair of substrates placed opposite each other through a liquid crystal layer therebetween On the substrate, a preset electrode structure having a plurality of openings and a solid portion is formed. Therefore, the inclined electric field generated at the individual edge portions of the openings can be formed in the openings and the solid portion. A plurality of liquid crystal domains, each of which exhibits a radial oblique alignment. 581921 (3) Summary sheet of the invention However, the inventor of the present invention found that the display quality cannot be sufficiently improved only by the electrode structure disclosed in this patent application. This is because the busbar (herein, the term “busbar” is used to collectively refer to the interconnection line). The alignment adjustment force applied by the electric field generated near the edge does not match the inclined electric field generated by the edge portion of the opening. Applied alignment adjustment force. SUMMARY OF THE INVENTION The present invention can solve the problems in the prior art, and an object thereof is to provide a liquid crystal display device having a wide viewing angle feature and capable of producing a high display quality. The liquid crystal display device of the present invention includes a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of image element regions for display, wherein: The first substrate includes a picture element electrode located on a side close to the liquid crystal layer for each of the plurality of picture element regions, a switching element electrically connected to the picture element electrode, and a The second busbar including a gate busbar and a source busbar electrically connected to the switching element; the second substrate includes a counter electrode placed opposite to the picture element electrode through the liquid crystal layer; the figure The image element electrode includes a plurality of openings, and a solid portion having a plurality of unit solid portions; in each of the plurality of image element regions, the liquid crystal layer will apply voltage to the image element electrode and the A vertical arrangement is formed between the counter electrodes, and when a voltage is applied between the picture element electrode and the counter electrode, it will be caused by the individual edge portions of the plurality of openings of the picture element electrode. The generated oblique electric field is responsive to the plurality of openings and the plurality of liquid crystal domains formed in the solid part. Each of the plurality of liquid crystal domains exhibits a radial oblique alignment, and each of the plurality of liquid crystals 581921 (4) Description of the invention The orientation of the continuation page fields can be changed according to the applied voltage for display; and in each of the plurality of picture element regions, the plurality of openings of the picture element electrode At least one of the openings (the openings in the busbar and the openings between two adjacent unit solid parts of the plurality of unit solid parts) will overlap the busbar. Therefore, the aforementioned purpose can be achieved. Another liquid crystal display device of the present invention includes a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of image element regions for display, wherein: The first substrate includes a picture element electrode located on a side close to the liquid crystal layer for each of the plurality of picture element regions, a switching element electrically connected to the picture element electrode, and a The second busbar includes a gate busbar and a source busbar electrically connected to the switching element; the second substrate includes a counter electrode placed on the opposite side of the picture element electrode through the liquid crystal layer; the figure The image element electrode includes a plurality of openings, and a solid portion having a plurality of unit solid portions (each of which is surrounded by at least a part of the plurality of openings); the liquid crystal layer will be applied to the image element electrode without applying a voltage. And the counter-electrode form a vertical arrangement; and in each of the plurality of picture element regions, at least one of the plurality of openings of the picture element electrode (located in Such units located in a plurality of entities portion between two adjacent openings the busbar section line unit entities and aperture) overlap the busbars line. Therefore, the aforementioned purpose can be achieved. Preferably, the at least one opening that overlaps the busbar includes at least one opening in the gate busbar. 581921 (5) I Description of the Invention Continued The plurality of openings of the picture element electrode located in the gate busbar will overlap the busbar. The at least one opening that overlaps the busbar further includes an opening in the source busbar. Preferably, at least some of the plurality of openings have substantially the same shape and substantially the same size, and will form at least one unit lattice with a rotationally symmetrical arrangement.

Preferably, each of the plurality of openings is rotationally symmetrical in shape. Each of these plurality of openings may have a generally circular shape. Each of these plurality of unit solid parts may have a generally circular shape. Preferably, in each of the plurality of picture element regions, a total area of the plurality of openings of the picture element electrode is smaller than an area of a solid portion of the picture element electrode.

The liquid crystal display device may further include a protruding portion located in each of the plurality of openings, and a sectional shape of the protruding portion in a plane of the first substrate is the same as a sectional shape of a plane of the plurality of openings; the The side of the protruding portion has an alignment adjustment force, and its direction relative to the liquid crystal module of the liquid crystal layer is the same as the alignment adjustment direction caused by the inclined electric field. There is still another liquid crystal display device, which includes a first substrate, a second substrate, a liquid crystal layer located between the first substrate and the second substrate, and a plurality of image element regions for display, wherein : The first substrate includes a picture element electrode located on a side thereof close to the liquid crystal layer for each of the plurality of picture element regions, and an electrical connection is electrically connected to the picture element electrical-10- 581921 (6 ) DESCRIPTION OF THE INVENTION The switching element of the continuation pole and a busbar including a gate busbar and a source busbar electrically connected to the switching element; the second substrate includes a liquid crystal layer A counter electrode opposite to the picture element electrode; the picture element electrode includes a plurality of openings and a solid part; in each of the plurality of picture element regions, the liquid crystal layer will be A vertical arrangement is formed between the image element electrode and the counter electrode, and when a voltage is applied between the image element electrode and the counter electrode, it will be caused by the individualities of the plurality of openings of the image element electrode. Margin The oblique electric field generated in response to adjusting the alignment of the liquid crystal layer, and in each of the plurality of picture element regions, at least one of an edge of the gate bus line and an edge of the source bus line It will be covered by the solid part of the picture element electrode. Therefore, the aforementioned purpose can be achieved. Preferably, in each of the plurality of picture element regions, at least an edge of the gate bus bar will be covered by a solid portion of the picture element electrode. In each of the plurality of picture element regions, the edge of the gate bus bar and the edge of the source bus line may be covered by the solid part of the picture element electrode. The solid part of the picture element electrode may include a plurality of unit solid parts: and in each of the plurality of picture element regions, when a voltage is applied between the picture element electrode and the counter electrode, it will Because of the inclined electric field generated at the individual edge portions of the plurality of openings of the picture element electrode, in response to the plurality of openings and the plurality of liquid crystal domains formed in the solid portion, each of the plurality of liquid crystal domains is The system has a radial tilt alignment, and the alignment of each of the plurality of liquid crystal domains can be changed according to the applied voltage 581921 ⑺ Description of the continuation sheet of the invention to display. In each of the plurality of picture element regions, at least one of the plurality of openings of the picture element electrode (the opening in the bus bar and the plurality of unit solid parts) (The opening between the solid parts of two adjacent units in the middle) will overlap the bus line. When a voltage is applied between the picture element electrode and the counter electrode, the liquid crystal layer can form a liquid crystal domain in a part of the solid part located in the bus line by the inclined electric field. Radial tilt alignment. The function of the present invention will now be explained. In the liquid crystal display device of the present invention, the picture element electrode for applying a voltage to the liquid crystal layer of each picture element region includes a plurality of openings (electrode portions without a conductive film) and a solid portion (such openings The part of the electrode other than the hole, that is, the part with the conductive film). The solid part includes a plurality of unit solid parts, each of which is substantially surrounded by the openings, and the solid part is generally made of a continuous conductive film. The liquid crystal layer forms a vertical alignment when no voltage is applied, but after the voltage is applied, it will form a plurality of liquid crystal domains due to the inclined electric field 'at the individual edge portions of the plurality of openings of the picture element electrode'. Each liquid crystal domain exhibits a radial oblique alignment. Generally, the liquid crystal layer is made of a liquid crystal material having negative electro-anisotropy, and the alignment of the liquid crystal layer can be controlled by a vertical alignment film on the opposite side thereof. The liquid crystal domains are formed by the openings corresponding to the picture element electrodes and the inclined electric field in the region of the solid part, and the orientation of each liquid crystal domain can be changed according to the applied voltage to display. Because each 581921 发明 invention description page liquid crystal domain is axisymmetrically aligned, there is almost no viewing angle dependence of display quality, and a wide viewing angle feature can be achieved.

Furthermore, the liquid crystal domains corresponding to the openings and the liquid crystal domains corresponding to the solid parts are formed by the inclined electric field generated at the edge portions of the openings, so the liquid crystal domains are in a pattern staggered next to each other And the formation of the liquid crystal module alignment in one of the liquid crystal domains and the liquid crystal module alignment in the adjacent liquid crystal domains are basically continuous with each other. Therefore, the liquid crystal domain formed in the opening and another adjacent liquid crystal domain formed in the solid part will not form misalignment lines, so the display quality will not be damaged, and the alignment of the liquid crystal modules Will be very stable.

In the liquid crystal display device of the present invention, the liquid crystal modules are not only radially inclined in the region corresponding to the solid portion of the picture element electrode, but also radially inclined in the region corresponding to the opening. Compared with the above-mentioned conventional liquid crystal display device, such a liquid crystal display device has relatively high continuity in the alignment of the liquid crystal modules, and at the same time, it can achieve a very stable alignment, so it can obtain a very uniform display without displaying unbalance Hooked results. Specifically, in order to achieve satisfactory response characteristics (high response speed), the tilted electric field used to control the alignment of these liquid crystal modules must be applied to a large number of liquid crystal modules. To achieve this, a large number of openings (edge portions) must be formed. In the liquid crystal display device of the present invention, a liquid crystal domain having a stable radial oblique alignment is formed for each opening. Therefore, even if a large number of openings must be formed to improve the response characteristics, it is still possible to avoid damage to the display quality (uneven display results). However, only by providing the electrode structure as described above, -13- 581921 (9) description of the invention can not sufficiently improve the display quality, which depends on the openings of the picture element electrode and the bus bar The positional relationship between the edges of a line (a group of interconnected lines).

Since a predetermined signal (voltage) for driving the liquid crystal display device must be applied to the bus line of the liquid crystal display device, an electric field must be generated between the bus line and the counter electrode. Therefore, an inclined electric field is generated near the edge of the bus line. However, the alignment adjustment force caused by the inclined electric field does not match the alignment adjustment force caused by the inclined electric field generated by the edge portion of the opening. Therefore, if the liquid crystal domain formed in the opening in the bus line is affected by the alignment adjustment force caused by the inclined electric field generated near the edge of the bus line, the alignment of the liquid crystal domain will be disturbed, so A twisted radial tilt alignment is formed. Furthermore, because adjacent liquid crystal domains tend to maintain their alignment continuity, this alignment interference will also affect the alignment of adjacent liquid crystal domains (ie, liquid crystal domains near the solid part of the cell). Therefore, the alignment of the liquid crystal domain of the solid part of each adjacent cell will be disturbed.

In the liquid crystal domain, which exhibits a distorted radial tilted alignment due to its disturbed alignment, its alignment is quite unstable and easily disintegrated. Therefore, it takes a long time after the voltage is applied to allow the alignment of such liquid crystal domains. Reached steady state. Therefore, the above-mentioned alignment interference will reduce the response speed (destroying response characteristics). Furthermore, each liquid crystal domain in the picture element area will reach the stable state of this distorted radial tilt alignment, where the orientation has been disturbed, and the disturbed orientation in each picture element area is different. Therefore, the phenomenon of afterimage will occur, in which after the image switching signal is input, the previously shown -14- 581921 (ίο) invention description page

The images are still there. This is because if the alignment of the liquid crystal layer in different picture element regions is different, the transmittance in different picture element regions will also be different. Specifically, there is a significant difference in the alignment of the liquid crystal layer between the image element area converted from white display to intermediate grayscale display and the image element area converted from black display to intermediate grayscale display, and these images The difference in transmittance between the element regions is likely to cause an afterimage phenomenon. The reason is as follows. In a white display, the oblique electric field generated at the edge portion of the opening will apply a very strong alignment adjustment force, so the alignment of the liquid crystal layer is very stable. Therefore, the alignment of the liquid crystal layer is very stable even after switching to the intermediate gray scale display. In contrast, when switching from a black display to an intermediate gray scale display, the alignment adjustment force caused by the slanted electric field generated at the edge portion of the opening is very weak, so the alignment of the liquid crystal layer is quite easy to disintegrate.

The liquid crystal display device of the present invention is designed such that in each of the plurality of picture element regions, at least one of the plurality of openings (the openings in the busbar and the two The openings between adjacent unit solid parts) will overlap with the busbar (strictly speaking, it should be a part of the busbar). Therefore, the edge of the bus bar near the opening stacked on the bus line will be covered by the unit solid part of the image element area. Therefore, near the openings stacked on the bus line, the liquid crystal module of the liquid crystal layer will be electrically shielded by the unit solid part of the picture element area, so that it will not be affected by the vicinity of the bus line edge. The effect of the generated oblique electric field. Therefore, the liquid crystal module of the liquid crystal layer is not affected by the alignment adjustment force of -15-581921 (11) I caused by the tilting electric field generated near the edge of the bus bar. Therefore, its alignment will only It is adjusted by the oblique electric field generated at the edge portion of the opening. Therefore, in the liquid crystal display device of the present invention, the alignment is not affected in the liquid crystal domain formed in the openings stacked on the bus bar or in the liquid crystal domain in the unit solid part formed near the openings. Interference, so you can avoid reducing the response speed (destroying response characteristics) and avoiding afterimages.

In order to avoid the alignment interference caused by the inclined electric field generated near the edge of the bus line, it is better to increase the proportion of openings stacked on the bus line, that is, to increase the unit solid part of the image element area Covered busbar edge portion. However, when the bus bar is made of a light-shielding material, increasing this ratio will reduce the aperture ratio. Therefore, the ratio of the openings stacked on the bus line is more suitable depending on the application of the liquid crystal display device, and the expected response characteristics and aperture ratio must be considered.

The following arrangement can effectively avoid reducing the response speed and avoiding the afterimage phenomenon: the openings located between two adjacent unit solid parts and stacked on the bus line include at least the gate bus line (That is, in the arrangement, among the openings located in the busbar and between two adjacent unit solid parts, at least one opening system in the gate busbar is Stacked on the bus line). This is because the voltage applied to the gate bus line is generally higher than the voltage applied to the source bus line. Therefore, the oblique electric field generated near the edge of the gate bus line affects the liquid crystal modules. The influence will be greater than the oblique electric field generated near the edge of the source busbar for the scenes of these liquid crystal modules. -16- 581921 (12) Description of the invention Continued on the page. Furthermore, not only the openings between two adjacent unit solid parts can be stacked on the bus line, other openings on the bus line can also be Stacked on the bus line. For example, in the plurality of openings of the picture element electrode, all the openings in the gate bus line can be stacked on the bus line. Of course, alternative arrangements can also be used, for example, the openings located between two adjacent unit solid parts and stacked on the bus line include the openings in the source bus line. Please note that although the oblique electric field generated near the edge of the busbar will not only reduce the response speed and afterimage phenomenon described above, but also reduce the contrast, as described below, if the busbar is caused by By using a light-shielding material, the contrast can be avoided. As described above, an oblique electric field is generated near the edge of the bus bar, and the oblique electric field is generated regardless of whether a voltage is applied to the liquid crystal layer between the picture element electrode and the counter electrode. Therefore, in a liquid crystal display device that performs display in a general black mode, when no voltage is applied, if the liquid crystal module located near the edge of the bus bar is tilted by the alignment adjustment force caused by the inclined electric field, it may Light leakage occurs, thereby reducing contrast. Specifically, because the gate busbar is at a very high voltage most of the time to keep the switching element at 0F F, the degree of light leakage near the edge of the gate busbar is very important. In the liquid crystal display device of the present invention, the edge of the bus bar near the openings stacked on the bus line will be covered by the unit solid part of the picture element area, so the liquid crystal module of the liquid crystal layer will be electrically Shade to make 581921 (13) invention fact sheet

It is not affected by the oblique electric field generated near the edge of the bus bar. Therefore, the liquid crystal module of the liquid crystal layer is not inclined by the alignment adjustment force caused by the inclined electric field. Although the liquid crystal edge group of the liquid crystal layer in the openings stacked on the bus line may be inclined by the inclined electric field generated between the bus line and the counter electrode, if the bus line is made of a light-shielding material If it is made, the openings stacked on the bus line will not be illuminated. Therefore, in the liquid crystal display device of the present invention, if the bus bar is made of a light-shielding material, light leakage can be prevented, and thus a decrease in contrast can be avoided. In addition, if the bus bar is made of a light-shielding material, it can suppress unevenness in the display plane (ie, local variation of contrast), thereby improving display quality, which will be described later.

Due to the oblique electric field generated near the edge of the bus line, residual charges may appear in the opening (the opening of the insulating material is exposed), and if the liquid crystal module is located in the opening in the bus line If it is tilted due to the effect of this residual charge, light leakage will result. Although the degree of the residual charge varies depending on the surface condition of the insulating material, the surface condition of the insulating material may change when the alignment film is printed or the liquid crystal material is ejected. Therefore, in the liquid crystal display device, the residual charge in the display plane is changed. If the residual charge changes in the display plane, the degree of light leakage will also change in the display plane, resulting in a local change in contrast. Specifically, as described above, because a very high voltage is applied to the gate bus, the gate bus is particularly important for whether or not an uneven hooking phenomenon may occur. -18- 581921 (14) Description of the Invention Continued In the liquid crystal display device of the present invention, when the bus bar is made of a light-shielding material, the openings stacked on the bus line will be used by the bus bar. Line shading can prevent the occurrence of the above-mentioned uneven hooking phenomenon, and thus can improve the display quality.

When at least part of the plurality of openings have substantially the same shape and substantially the same size and constitute at least one unit lattice with a rotationally symmetrical arrangement, for each unit lattice, an extremely high symmetry can be achieved. To arrange a plurality of liquid crystal domains to improve the viewing angle dependence of display quality. Furthermore, by dividing the entire image element region into unit lattices, the alignment of the liquid crystal layer can be stabilized in the entire image element region. For example, the openings can be arranged so that the centers of the openings form a square lattice. Note that when dividing each picture element area with opaque elements (such as storage capacitor lines), the cell lattice can be arranged for each area used for display.

When the shape of each of the plurality of openings (usually the openings constituting the unit lattice) is rotationally symmetrical, the stability of the radial tilt alignment of the liquid crystal domain formed in the openings can be increased. . For example, the shape of each opening (viewed from the normal direction of the substrate) may be circular or a general polygonal shape (such as a square). Note that depending on the shape (aspect ratio) of the image element, a shape that is not rotationally symmetric (such as an ellipse) can also be used. Furthermore, when the shape of a region of the solid portion (“unit solid portion”) substantially surrounded by the openings is rotationally symmetrical, the stability of the radial tilt alignment of the liquid crystal domain formed in the solid portion can be increased. degree. For example, when the openings are arranged in a square lattice pattern, the -19-581921 of the openings (15) Invention Description The shape of the continuation page may be a general star or cross shape, and the energy of the solid part can be Generally circular, generally square, or similar shapes. The equal openings and the solid part surrounded by the openings may have a square shape. In order to stabilize the radiation direction of the liquid crystal domain formed in the electrode opening, it is preferable that the liquid crystal domain formed in the opening is general. In other words, the shape of the opening can be designed such that the liquid crystal domain formed in the liquid crystal domain has a generally circular shape. Of course, in order to stabilize the oblique alignment of the liquid crystal domain formed in the solid part of the electrode, it is preferable that the solid is generally rounded by a solid body substantially surrounded by the openings. The liquid crystal domain formed in the solid portion (which is made by continuous) is formed corresponding to a region (unit solid portion) of a substantial enveloping portion with a plurality of openings. Therefore, the shape and arrangement can be designed to make the area of the solid part (the general circular shape of Unit 1). Regardless of the use of any of the above alternative methods, the total area of the openings in the preferred system pole is less than Area of an image element region. When the area of the solid portion increases, the area of the liquid crystal layer (from the method of the substrate, defined in the plane of the liquid crystal layer) directly affected by the generated electric field will also Increase, so that the voltage of the entire liquid crystal layer can improve its optical characteristics (for example, a good way to decide whether each opening should be a general circular shape or each solid part should be a general circular shape It depends on what kind of arrangement can produce a larger solid beast shape. Of course, it is a solid body surrounded by a conductor film in the shape of a generally inclined and circular shaped opening. Part) is applied to transmittance when viewed in the direction of the line produced by the solid part electrode). The area of the arrangement. More -20- 581921 (16) Description of the Invention Continued The best arrangement method can make correct selection by the spacing of these picture elements. Generally, when the pitch is greater than about 25 μm, the preferred way to form such openings is to make each solid portion a generally circular shape. When the distance is less than or equal to about 25 μηι, the best way is to make each opening a general circular shape.

The alignment adjustment force caused by the inclined electric field generated at the edge portion of the opening formed in the electrode described above exists only when a voltage is applied. Therefore, when no voltage is applied or the voltage is very small, if the liquid crystal panel is pressed, the radial tilt alignment of the liquid crystal domain cannot be maintained. In order to solve this problem, the liquid crystal display device of one specific embodiment of the present invention includes a protruding portion in each electrode opening. The direction of the group is the same as the alignment adjustment direction caused by the above-mentioned inclined electric field. Preferably, the cross-sectional shape of the protruding portion in the plane of the substrate is the same as the cross-sectional shape of the opening, and has the same rotational symmetry as the aforementioned opening shape.

With the liquid crystal display device of the present invention, only by providing an opening in each picture element electrode, and by forming the opening in each picture element electrode in a predetermined positional relationship with the edge of the bus bar Alignment can achieve stable radial tilt alignment. Specifically, the liquid crystal display device of the present invention can be manufactured by a well-known manufacturing method with the following modifications: the photomask in the step of patterning a conductor film into a picture element electrode is modified so as to form a device with a desired arrangement. An opening of an expected shape, and a mask in a step of patterning the bus line is modified so as to form the bus line in an expected shape. -21-581921 (17) Description of the invention continued

In another liquid crystal display device of the present invention, an edge of at least one of the gate bus line and the source bus line is covered by a solid portion of a picture element electrode. Therefore, near the bus bar whose edges are covered by the solid part of the picture element electrode, the liquid crystal module of the liquid crystal layer is electrically shielded from the oblique electric field generated in the vicinity of the bus bar edge. Impact. Therefore, the liquid crystal module of the liquid crystal layer is not affected by the alignment adjustment force caused by the inclined electric field. Therefore, light leakage can be avoided, thereby preventing a decrease in contrast. Furthermore, the area near the edge covered by the solid part of the picture element electrode will be covered by the conductive film (solid part) of the picture element electrode, so it is unlikely that residual charges will occur, so that unevenness can be avoided. . As described above, in the liquid crystal display device of the present invention, since a light leakage phenomenon caused by an inclined electric field generated near the bus bar can be avoided, a decrease in contrast can be avoided, and a residue due to the bus bar can be avoided. The non-uniformity caused by the electric charge enables high-quality display.

Because the effect of the inclined electric field generated near the edge of the gate bus line on the liquid crystal modules is greater than the effect of the inclined electric field generated near the edge of the source bus line on the liquid crystal modules, it is better That is, at least an edge of the gate bus bar is covered by a solid portion of the picture element electrode. Furthermore, in order to more reliably avoid the influence of the inclined electric field generated in the vicinity of the edge of the busbar, it is better that the edge of the gate busbar and the edge of the source busbar are both The solid part of the picture element electrode is covered. In the liquid crystal display device of the present invention, it is possible to avoid degradation of display quality caused by the oblique electric field generated near the edge of the bus bar edge. Therefore, the present invention can provide a liquid crystal display device with wide viewing angle characteristics and high display quality. The present invention is applicable to an active matrix liquid crystal display device, and also to any of the following devices: a transmissive liquid crystal display device, a reflective liquid crystal display device, and a transmissive / reflective combined liquid crystal display device. DETAILED DESCRIPTION Specific embodiments of the present invention will now be described with reference to the drawings. First, the electrode structure and function of the liquid crystal display device of the present invention will be explained. A preferred embodiment of the present invention will be described later for an active matrix liquid crystal display device using thin film transistors (TFTs). Furthermore, although the preferred embodiment of the present invention is described with reference to a transmissive liquid crystal display device, the present invention can also be applied to a reflective liquid crystal display device and a transmissive / reflective combined liquid crystal display device. Please note that in the present invention, the area of the liquid crystal display device corresponding to the "picture element" (which is the smallest display unit) will be referred to as the "picture element area". In a color liquid crystal display device, R, G, and B "picture elements" will correspond to one "picture element". In an active matrix liquid crystal display device, a picture element region is defined by a picture element electrode and a counter electrode located opposite the picture element electrode. In the arrangement with a black matrix, strictly speaking, the image element region is a part of each region to which a voltage is applied according to an expected display state, which will open holes corresponding to the black matrix. A structure of one picture element region of a liquid crystal display device 100 according to a specific embodiment of the present invention will now be described with reference to FIGS. 1A and 1B. In the following description of -23-581921 (19) Invention Description Continued, the color filter and the black matrix are omitted for simplicity. Moreover, in the following drawings, each element having substantially the same function as the corresponding element in the liquid crystal display device 100 will be represented by the same element symbol, and will not be described further below. Fig. 1A is a plan view seen from the normal direction of the substrate, and Fig. 1B is a cross-sectional view taken along line 1B-1B 'of Fig. 1A. The state shown in Fig. 1B is when no voltage is applied to the entire liquid crystal layer. The liquid crystal display device 100 includes an active matrix substrate (hereinafter referred to as a "TFT substrate") 100a, an inverted substrate (hereinafter referred to as a "color filter substrate") 100b, and a TFT substrate 100a and The liquid crystal layer 30 between the counter substrates 100b. The liquid crystal module 30 a of the liquid crystal layer 30 is negatively induced anisotropy. When a voltage is applied to the entire liquid crystal layer 30 without passing through a vertical alignment film (not shown in the figure, which acts as a vertical alignment layer), It is arranged to be perpendicular to the surface of the vertical alignment film (as shown in FIG. 1B). The vertical alignment film is located on one surface of each TFT substrate 100 a and the opposite substrate 100 b near the liquid crystal layer 30. The state here is that the liquid crystal layer 30 is vertically aligned. However, please note that depending on the type of the vertical alignment film and the type of liquid crystal material used, the liquid crystal module 3 0 a in the vertically aligned liquid crystal layer 30 may be on the surface of the vertical alignment film (the The surface of the substrate) is slightly inclined between the normals. Generally, the vertical alignment is defined as a state in which the axis alignment (also referred to as “axis alignment”) of the liquid crystal modules forms an angle of about 85 ° or more with the surface of the vertical alignment film. The TFT substrate 100a of the liquid crystal display device 100 includes a transparent substrate (such as a glass substrate) 11 and an image element located on the surface of the transparent substrate 11 1-24- 581921 (20) Description of the Invention Continuing Element 1 4. The counter substrate 100b includes a transparent substrate (such as a glass substrate) 2 1 and a counter electrode 22 located on a surface of the transparent substrate 21. The alignment of the liquid crystal layer 30 in each picture element region will be applied between the picture element electrode 14 and the counter electrode 2 2 (the two electrodes are arranged opposite each other through the liquid crystal layer 30). The voltage changes. A display can be manufactured by using the following phenomenon: the polarizing property or the amount of light passing through the liquid crystal layer 30 will change as the alignment of the liquid crystal layer 30 changes.

The picture element electrode 14 of the liquid crystal display device 100 includes a plurality of openings 14a and a solid portion 14b. The openings 14a refer to the portion of the picture element electrode 14 made of a conductive film (such as an ITO film) from which the conductive film has been removed, and the solid portion 14b refers to the portion The part of the conductor film that still exists (ie, the part other than the openings 1 4 a). Although a plurality of openings 1 4 a are formed in each picture element electrode, the solid portion 1 4 b is basically made of a single continuous conductive film.

After the openings 1 4 a are arranged, their individual centers will form a square lattice, and the unit solid portion 14 b ′ (which is defined as one of the solid portions 1 4 b substantially surrounded by four openings 1 4 a In some cases, the individual centers of the four openings 1 4 a are located at the four lattice points constituting an early element lattice), and the shape is a general circular shape. Each of the openings 1 4 a has a general star shape, which has four quarter-arc side edges (edges) and a quadruple rotation axis located at the center of the four side edges. In order to stabilize the alignment in the entire picture element region, the unit lattice is preferably able to cover the entire picture element electrode 14 until it surrounds it. Specifically, as shown in the figure, the surrounding part of the picture element electrode 14 can be preferably patterned to correspond to a half of the shape of -25-581921 (21) Description of the invention Continuation page opening 14a Element electrode 14 around its side), or patterned into a shape corresponding to a quarter of the opening 14 a (the image element electrode 14 is around its corner) so that the image The element electrode 14 can also be provided with openings 1 4 a around it. The openings 1 4 a located in the central part of the picture element area generally have the same shape and size. The shape of the unit solid portion 14b 'in the unit lattice formed by the openings 14a, respectively, is generally circular, and all have the same shape and size. Each of the unit solid portions 14N is connected to an adjacent unit solid portion 14b ', thereby constituting a solid portion 14b that substantially functions as a single continuous conductive film. When a voltage is applied between the picture element electrode 1 4 (which has the structure as described above) and the counter electrode 22, a sloped electric field is generated at the edge portion of each of the openings 14a, thereby generating A plurality of liquid crystal domains each having a radial oblique alignment. This liquid crystal domain appears in each region corresponding to the openings 14a, and in each region of the cell solid portion 14b 'corresponding to a cell lattice. Although the picture element electrode 14 shown here has a square shape, the shape of the picture element electrode 14 is not limited to this. The general shape of the picture element electrode 14 may approach a rectangular shape (including squares and rectangles), so the openings 14a may be arranged in a square lattice pattern in a regular manner. Even if the shape of the picture element electrode 14 is not a rectangular shape, as long as the openings 1 4 a are arranged in a regular manner (such as the square lattice pattern shown here), the liquid crystal domain is formed in the image. In all regions of the element region, the effect of the present invention can still be achieved. -26- 581921 (22) Description of the invention continuation page Now, the above-mentioned mechanism for forming a liquid crystal domain by an inclined electric field will be described with reference to FIGS. 2A and 2B. Each of the liquid crystal layers 30 shown in FIGS. 1B and 2B shown in FIGS. 2A and 2B is a schematic view after a voltage is applied. The state diagram of the liquid crystal modules 30a shown in FIG. 2A at the beginning of the change according to the voltage applied to the entire liquid crystal layer 30 (initial ON state). The orientation of the liquid crystal module 30a shown in FIG. 2B is changed according to the applied voltage and has been stabilized. The curves EQ in Fig. 2A and Fig. 2B represent isopotential lines.

As shown in FIG. 1A, when the picture element electrode 14 and the counter electrode 22 have the same potential (the state when a voltage is not applied to the entire liquid crystal layer 30), the liquid crystal module 30a in each picture element region Will be arranged perpendicular to the surfaces of the substrates 1 1 and 2 1.

When a voltage is applied across the entire liquid crystal layer 30, the potential gradient shown in FIG. 2A, the medium potential line EQ (vertical to the power line), is generated. The isopotential line EQ is parallel to the solid part 1 4 b and the counter electrode 2 in the liquid crystal layer 30 (which is located between the solid part 1 4 b and the counter electrode 22 of the picture element electrode 14). 2 and descends in the area corresponding to the openings 14a of the picture element electrode 14. As a result, a sloped portion of the equipotential line EQ is generated in the liquid crystal layer 30 above the edge portion EG of the opening 14 a (the surrounding portion of the opening 14 a and the interior thereof, including the boundary thereof). The inclined electric field represented. There is a moment acting on the liquid crystal module 30a with negative induced anisotropy to guide the axis of the liquid crystal module 30a to be parallel to the potential line EQ (perpendicular to the power line). Therefore, the liquid crystal module 3 0 a above the right edge portion EG in FIG. 2A will tilt (rotate) clockwise, while the liquid crystal module 3 0 a above the left edge portion EG will tilt counterclockwise. -27-581921 (23) Description of the invention The continuation page is inclined (rotated), as shown by the arrow in Figure 2A. Therefore, the liquid crystal module 30 a above the edge portions EG will be aligned in parallel to the corresponding portions of the equipotential lines E Q. The changes in the alignment in the liquid crystal modules 30a will now be described in more detail with reference to FIGS. 3A to 3D. When an electric field is generated in the liquid crystal layer 30, a moment acts on the liquid crystal module 3 Oa with negative induced anisotropy to guide its axis alignment into parallel equipotential lines EQ. As shown in FIG. 3A, when an electric field indicated by an equipotential line EQ aligned with an axis perpendicular to the liquid crystal module 30a is generated, a moment that causes the liquid crystal modules 30a to tilt in a clockwise direction or The moments in which the liquid crystal modules 30a tilt in the counterclockwise direction have equal probability. Therefore, for the liquid crystal layer 30 located between the pair of parallel plate-shaped electrodes facing each other, a part of the liquid crystal module 30 a is subject to a clockwise moment, and a part of other liquid crystal modules Group 30a is subject to a counterclockwise moment. Therefore, it cannot be converted into the desired alignment very smoothly according to the voltage applied to the entire liquid crystal layer 30. As shown in FIG. 2A, when the edge portion EG of the opening 14a of the liquid crystal display device 100 of the present invention is generated, the equipotential line EQ is After a part of the indicated electric field, the LCD modules 30a will tilt in a direction parallel to the equipotential line EQ with a minimum rotation (the example shown in the figure is counterclockwise), such as Figure 3B. For a liquid crystal module 30a located in an electric field region indicated by an equipotential line EQ aligned with an axis aligned perpendicular to the liquid crystal modules 30a, it will be aligned with the inclined portion of the equipotential line EQ LCD mode -28-581921 (24) Description of the invention Continuation page group 3 0 a is tilted in the same direction, so as shown in Figure 3 C, its orientation is in the inclined part of the equipotential line EQ The alignment system of the LCD module 30a is continuous (uniform). As shown in FIG. 3D, when the electric field causes the equipotential line EQ to form a continuous concave / convex pattern, the liquid crystal module 3 0 a located in the plane portion of the equipotential line EQ will be aligned to the The alignment directions defined by the liquid crystal modules 3 0 a in the adjacent inclined portions of the equipotential lines EQ are the same. The meaning of "located at the equipotential line E Q" as used herein refers to being located in the electric field represented by the equipotential line E Q. The orientation change of the liquid crystal modules 30a (starting from the liquid crystal module in the inclined portion of the isopotential line EQ) will proceed as described above and reach a stable state, as shown in FIG. 2B. schematic diagram. The liquid crystal module 3 0 a located near the center portion of the opening 1 4 a is substantially equally affected by the individual alignment of the liquid crystal module 3 0 a located at the opposite edge portion EG of the opening 14 a. Maintain its alignment perpendicular to the isopotential line EQ. The liquid crystal module 3 0 a which is far away from the center of the hole 1 4 a will be inclined due to the influence of the alignment of other liquid crystal modules 3 0 a located at the near edge portion EG, thereby forming a symmetry with the opening. 1 4 a centered alignment of SA. In an alignment state viewed from the direction perpendicular to the display plane of the liquid crystal display device 100 (the direction perpendicular to the surfaces of the substrates 11 and 21), the liquid crystal modules 3a will have The center of the hole 1 4 a is the radial axis alignment based on the reference (not shown). In this detailed description, such an alignment will be referred to as "radial tilt alignment". Furthermore, a region where the liquid crystal layer exhibits a radial oblique alignment with a single axis as a reference is referred to as a "liquid crystal domain". The liquid crystal domain of the liquid crystal module 3 0 a exhibiting a radial oblique alignment will also be formed at -29- 581921 (25) Description of the invention The continuation page corresponds to the unit solid part 1 4 b 'which is substantially surrounded by the openings 1 4 a Area. The liquid crystal module 3 Oa in the area corresponding to the unit solid part 14b 'is affected by the alignment of the liquid crystal module 30a located at each edge portion EG of the opening 14a, and thus appears symmetrical to The radial SA of the center SA of the unit solid portion 14bf (corresponding to the center of the unit lattice formed by the openings 14a). The radial oblique alignment in the liquid crystal domain forming the unit solid portion 14V and the radial oblique alignment in forming the opening 1 4 a are continuous with each other, and both are located at the edge portion EG of the opening 1 4 a The alignment of the LCD modules 30a is the same. The liquid crystal module 3 0 a in the liquid crystal domain within the opening 14 a is formed to be oriented in a cone shape extending upward (toward the substrate 1 0 b) to form a liquid crystal domain in the unit solid portion 14 b ′. The liquid crystal module 30a in the center is aligned in a cone shape extending downward (toward the substrate 100a). As described above, the radial tilt alignment in the liquid crystal domain forming the opening 14a and the radial tilt alignment in the liquid crystal domain forming the unit solid portion 14b 'are continuous with each other. Therefore, misalignment lines (alignment defects) are not formed at the boundaries therebetween, and thus it is possible to avoid display quality degradation due to misalignment lines. In order to improve the viewing angle dependence in all azimuth angles (which is a display quality of a liquid crystal display device), a liquid crystal module 3 0a that is oriented in various azimuth directions has a better probability of existence in each picture element The region has rotational symmetry, and the better system has axial symmetry. In other words, the better liquid crystal domain formed in the entire image element region has rotational symmetry, and the better system has axial symmetry. However, please note that it is not necessary to have rotational symmetry in the entire picture element area, as long as each picture element area in the liquid crystal layer is -30- 581921 (26) Description of the Invention Continued

Becomes a collection of liquid crystal domains of a plurality of groups, and the liquid crystal domains of the plurality of groups are arranged so that each group has rotational symmetry (or axis symmetry). Into a square lattice pattern). Therefore, the arrangement of the openings 1 4 a formed in the image element area does not need to be rotationally symmetric in the entire image element area, as long as the arrangement can be represented as a set of openings of a complex group, and the complex numbers After the group openings are arranged, each group can have rotational symmetry (or axisymmetric) (for example, there are a plurality of group openings, where each group of openings are arranged in a square lattice pattern). Of course, it is also applicable to the arrangement of the unit solid portions 14bf substantially surrounded by the openings 14a. Furthermore, because the better-shaped system of each liquid crystal domain has rotational symmetry and the better system has axial symmetry, each of the openings 14a, that is, the better-shaped system of each unit solid portion 14b 'has Rotation symmetry, the better system has axisymmetric.

Please note that sufficient voltage may not be applied to the liquid crystal layer 30 near the center portion of the opening 14a, so the liquid crystal layer 30 near the center portion of the opening 14a cannot be used for display. In other words, even if the radial tilt alignment of the liquid crystal layer 30 near the center portion of the opening 14a is disturbed to some extent (for example, even if the central axis is deviated from the center of the hole 14a), the display quality is not degraded. Therefore, it is sufficient that the liquid crystal domain formed at least corresponding to the unit solid portion 14b 'is aligned to have rotational symmetry (more preferably, it has axial symmetry). As described above with reference to FIGS. 2A and 2B, the picture element electrode 14 of the liquid crystal display device 100 of the present invention includes a plurality of openings 1 4a, and the liquid crystal layer 3 in the picture element region 3 The electric field represented by the equipotential -31-581921 (27) with a sloped portion is generated in 0. The liquid crystal module 3 Oa with negative induced anisotropy in the liquid crystal layer 30 (when no voltage is applied, it is arranged vertically) will be located in the inclined part of the equipotential line EQ as a trigger signal. The orientation of the liquid crystal module 30a is changed to change its orientation. Therefore, liquid crystal domains with stable radial tilt alignment are formed in the openings 14a and the solid portions 14b. According to the voltage applied to the entire liquid crystal layer, changing the alignment of the liquid crystal module in the liquid crystal domain enables display. The shape (as viewed from the normal direction of the substrate) and the arrangement of the openings 14a of the image element electrodes 14 of the liquid crystal display device 100 of this embodiment will now be described. The display characteristics of the liquid crystal display TF device will show azimuth dependence due to the alignment (optical anisotropy) of these liquid crystal modules. In order to reduce the azimuth dependency in the display characteristics, it is better to align the liquid crystal modules in all azimuths with substantially equal probability. A better system is able to align the liquid crystal modules in each picture element area in all azimuth angles with substantially equal probability. Therefore, the preferred shape of the opening 1 4 a is that the liquid crystal domain formed in each picture element area can align the liquid crystal module 3 0 a in the picture element area with all azimuth angles with substantially equal probability. in. More specifically, in the preferred system, the shapes of the openings 1 4 a all have rotational symmetry with respect to the axis of symmetry (normal direction) extending through the center of each opening (better systems are symmetrical about at least one Double rotation axis). We also hope that the plurality of openings 1 4 a can be arranged to have rotational symmetry. Furthermore, in a preferred system, the shape of the unit solid portion 14b 'substantially surrounded by the openings also has rotational symmetry. We also hope that the unit physical parts 1 4b ′ can be arranged to have -32- 581921 (28) Description of Invention Continued pages have rotational symmetry. However, it is not necessary to arrange the openings 14a or the unit solid portions 14bf so as to have rotational symmetry in the entire picture element area. For example, when a square lattice (which is symmetrical to the quadruple rotation axis) is used as the smallest unit and the square lattice is used to form the image element area as shown in FIG. The LCD module is aligned in all azimuth angles with substantially equal probability in the region.

A general star-shaped opening 14a (which has a rotational symmetry) and a generally circular unit solid portion 14b1 will now be described with reference to FIGS. 4A to 4C in a square lattice as shown in FIG. 1A. Alignment of the LCD module 30a. 4A to 4C are schematic diagrams of the alignment of the liquid crystal modules 30a when viewed from the normal direction of the substrate. In the diagram showing the alignment of the liquid crystal module 3 0 a viewed from the normal direction of the substrate (for example, FIGS. 4B and 4C), the black speckled end of the oval liquid crystal module 3 0 a is shown The LCD module 30a is tilted so that the end is closer to the other end than the other end with an opening.

1 4 a picture element electrode 1 4 substrate. This representation is also applicable to the following drawings. A single unit lattice (which is composed of four openings 14a) in the picture element region shown in Fig. 1A will be described below. Figures 1B, 2A, and 2B correspond to the cross-sectional views of the individual diagonal lines of Figures 4A to 4C, respectively, and the following description will also refer to Figures 1B, 2A, and 2B. When the picture element electrode 14 and the counter electrode 22 have the same potential (that is, a state when a voltage is not applied to the entire liquid crystal layer 30), the liquid crystal module 30a will present a vertical arrangement as shown in FIG. 4A. Among them, the alignment direction of the liquid crystal modules 30a will be located closer to the liquid crystal layer of each TFT substrate 100a and the counter substrate 100b. Arrange layers (not shown) adjustments. When an electric field is applied in the entire liquid crystal layer 30 to generate an electric field as shown by the equipotential line EQ in FIG. 2A, a moment will be applied to the liquid crystal module 3 Oa with negatively induced anisotropy for Its axis is aligned to be parallel to the equipotential line EQ. As shown in FIG. 3A and FIG. 3B above, for the liquid crystal module 3 0 a under the electric field represented by the equipotential line EQ perpendicular to its molecular axis, these liquid crystal modes are not uniquely defined. The direction in which group 30a should tilt (rotate) (Figure 3A), so the orientation change (tilt or rotation) is not easy to occur. Conversely, for the liquid crystal module 3 0 a which is located at the isopotential line E Q inclined to its molecular axis, the tilt (rotation) direction is uniquely defined, so alignment changes easily occur. Therefore, as shown in FIG. 4B, the liquid crystal modules 30a will be inclined from the edge portion of the opening 14a at the position where the molecular axis is inclined to the equipotential line EQ. Then, the surrounding liquid crystal module 30a will be inclined to match the alignment of the radially inclined liquid crystal module 30a at the edge portion of the opening 14a, as shown in FIG. 3C. Then, the axis alignment of the LCD modules 30a will show a stable state (radial tilt alignment) as shown in FIG. 4C. As described above, when the shape of the opening 1 4 a is rotationally symmetric, the liquid crystal module 3 0a in the picture element region will start from the edge portion of the opening 1 4 a after applying a voltage. The centers of the openings 1 4 a are sequentially inclined. Therefore, an alignment will be generated, in which the liquid crystal module 3 0 a near the center of the opening 1 4 a (the individual alignment adjustment force of the liquid crystal module 3 0 a from each edge portion reaches an equilibrium state here) will Maintain a vertical alignment with the plane of the substrate, and the surrounding LCD module 3 0 a will use -34- 581921 near the center of the opening 1 4 a (30) Description of the invention Continuation of the LCD module 30a as a reference for radiation The pattern is inclined, and the degree of inclination will gradually increase as it moves away from the center of the opening 14a. The liquid crystal module 3 0 a in the area corresponding to the generally circular unit solid portion 14N surrounded by four general star openings 1 4 a arranged in a square lattice pattern will also be tilted so as to match the The alignment of the liquid crystal module 3 0 a tilted by the inclined electric field generated at the edge portion of each opening 14 a is the same.

Therefore, an alignment will be generated, in which the liquid crystal module 3 0 a near the center of the unit solid part 14 b ′ (the individual alignment adjustment force of the liquid crystal module 3 0 a from each edge portion reaches an equilibrium state here) will Maintaining an arrangement perpendicular to the substrate plane, the surrounding liquid crystal module 30a will be tilted in a radiation pattern based on the liquid crystal module 30a near the center of the unit solid portion 14b ', and the degree of tilt will follow Increasing away from the center of the unit solid portion 14b '.

As described above, when the liquid crystal domain (the liquid crystal modules 3 0 a in the parent liquid crystal domains are all radially inclined and aligned) is arranged in a square lattice pattern in the entire picture element region, the individual axes are aligned. The existence probability of the liquid crystal module 30a will have rotational symmetry, so that high-quality display can be achieved without any unevenness in viewing angle. In order to reduce the viewing angle dependence of a liquid crystal domain with a radial oblique alignment, the liquid crystal domain preferably has a high degree of rotational symmetry (the better system is symmetrical about at least one double axis of rotation, and the better system is symmetrical about at least one Quadruple rotation axis). Furthermore, in order to reduce the viewing angle dependence in the entire picture element area, a plurality of liquid crystal domains located in the picture element area can be arranged to have a high degree of rotational symmetry (a better system symmetry). A pattern (e.g., a square) composed of unit patterns (e.g., a unit lattice pattern) on at least one double axis of rotation, preferably symmetrical to at least -35-581921 (31) Continued description of a quadruple axis of rotation) Lattice pattern).

For the radial tilt alignment of these liquid crystal modules 3 0 a, the radial tilt alignment with a counterclockwise or clockwise spiral pattern as shown in FIG. 5B or FIG. 5C will be more than that shown in FIG. 5A Simple radial tilt alignment is also stable. The spiral alignment is different from the general twist alignment (the alignment direction of the liquid crystal modules 30a will change spirally with the thickness of the liquid crystal layer 30). In the spiral alignment, the alignment direction of the liquid crystal modules 30a in a minute area does not substantially change with the thickness of the liquid crystal layer 30. In other words, the alignment in a cross section (a plane parallel to the plane of the layer) of any thickness of the liquid crystal layer 30 is as shown in FIG. 5B or FIG. 5C, and the thickness of the liquid crystal layer 30 is substantially the same. No twisting. However, for the entire liquid crystal domain, there may be a certain degree of twist deformation.

When a material obtained by adding a palmitic reagent to a nematic liquid crystal material with negatively induced anisotropy is used, in the presence of an applied voltage, the liquid crystal modules 30a will be respectively shown in FIG. 5B or FIG. As shown at 5C, a radial oblique alignment with a counterclockwise or clockwise spiral pattern based on the opening 14a and the unit solid portion 14b 'is shown. Whether it appears counterclockwise or clockwise depends on the type of palming reagent used. Therefore, by controlling the liquid crystal layer 3 0 in the opening 14 a in the presence of an applied voltage so that it becomes a radial inclined alignment of a spiral pattern, then other liquid crystal modules 3 0 a perpendicular to the plane of the substrate As a reference, the direction of the spiral pattern of the radially inclined liquid crystal module 30a can be kept constant in all the liquid crystal domains, so that uniform display can be achieved without displaying uneven results. -36- 581921 (32) Description of the invention The continuation page is quite clear about the direction of the spiral pattern near the liquid crystal module 30a, which is perpendicular to the plane of the substrate, so the voltage applied to the entire liquid crystal layer 30 can also be improved. responding speed. In addition, after adding a palmarity reagent, the alignment of the liquid crystal modules 30 a will change its spiral pattern with the thickness of the liquid crystal layer 30 like a general twist alignment. In the alignment of the liquid crystal modules 30a, which does not change its spiral pattern with the thickness of the liquid crystal layer 30, the liquid crystal module 3 is aligned vertically or parallel to the polarization axis of the polarizing plate Oa does not cause a phase difference to the incident light, so the incident light passing through the area with this alignment will not have any effect on the transmittance. Conversely, in the alignment of the liquid crystal modules 30a which will change its spiral pattern with the thickness of the liquid crystal layer 30, the liquid crystal module 30a which is aligned vertically or parallel to the polarization axis of the polarizing plate A phase difference will be caused to the incident light, and an optical rotation power will also be used, so the incident light passing through the area with this alignment will affect the transmittance. Therefore, a liquid crystal display device capable of producing a high-brightness display can be obtained. In the example shown in FIG. 1A, each of the openings 14a has a general star shape, and each unit solid portion 14b 'has a generally circular shape. Among these openings 1a and 4a The equal cell solid portions 14b 'are all arranged in a square lattice pattern. However, the shape of the openings 14a, the shape of the unit solid portions 14b ', and the arrangement thereof are not limited to those shown in the above example. Figs. 6A and 6B are schematic plan views of picture element electrodes 14A and 14B with individual openings 14a and unit solid portions 14b 'having different shapes, respectively. Picture element electrodes 1 4 A and 1 4 B in FIG. 6 A and FIG. 6 B with openings 1 4 a and -37- 581921 (33) Description of the invention continued page

The unit solid portion 14b 'is respectively the opening of the picture element electrode in FIG. 1A and the situation after the unit solid portion is slightly distorted. The openings 1 4 a and 1 4 a of the picture element electrodes 14 a and the unit solid part 14N both have a double rotation axis (not having a quadruple rotation axis), and after regular arrangement, they will form a rectangular shape. Yuan lattice. In the picture element electrodes 14A and 14B, the 'openings 14a have a twisted star shape, and the unit solid portion 14b' has a general elliptical shape (a twisted circular shape). By using the picture element electrodes 1 4 A and 1 4B, a liquid crystal display device with high display quality and desired viewing angle characteristics can also be obtained. Furthermore, the picture element electrodes 14C and 14D in FIG. 7A and FIG. 7B may be replaced respectively.

In the picture element electrodes 1 4 C and 1 4 D, the openings 14 a showing a general cross shape are arranged in a square lattice pattern, so that each unit body portion 14b · has a general square shape. Of course, the patterns in the picture element electrodes 14C and 14 D may also be deformed, resulting in rectangular unit lattices. As described above, after the replacement, by regularly arranging the unit solid portions 14b1 of these general rectangles (including squares and rectangles), a liquid crystal display device with high display quality and desired viewing angle characteristics can be obtained. However, the shape of the opening 14a and / or the unit solid portion 14N is preferably a circle or an oval, rather than a rectangle, so that the radial oblique alignment can be more stable. Xianxin has round or oval openings and / or radial oblique alignment of the solid part of the unit, which is because the edges of the openings 1 4 a will be more continuous (smooth), so these LCD modules The orientation direction of 3 0 a can be changed in a more continuous (smooth) manner. -38- 581921 (34) Description of the Invention Continued In view of the continuity of the alignment direction of the liquid crystal module 30a in the above, the picture element electrodes 14E and 14F shown in Figs. 8A and 8B are also what we want . The picture element electrode 1 4 shown in FIG. 8A is a variation of the picture element electrode 1 4 shown in FIG. 1A (where each opening 14a consists of only four arcs). The picture element electrode 1 4 F shown in FIG. 8B is the picture element electrode 1 4D shown in FIG. 7B (where each side of the opening 14a in the unit solid portion 14b 'is an arc) The change. In the picture element electrodes 1 4 E and 1 4 F, the openings 14a and the unit solid portions 14N each have a quadruple rotation axis, and are performed in a square lattice pattern (which has a quadruple rotation axis). arrangement. Alternatively, the shape of the unit solid portion 14b ′ of the opening 14a may be twisted into a shape having a double rotation axis, and the unit solid portions 14b ′ may be arranged in a rectangular lattice (which has a double Rotation axis), as shown in Figure 6 A and Figure 6 B. In the above example, the openings 14a are generally star-shaped or generally cross-shaped, while the unit solid portion 14b 'is generally circular, generally oval, generally square (rectangular), and has Rounded general rectangle. Alternatively, the negative and positive relationship between the openings 14a and the unit entity portions 14N may be reversed (the negative and positive relationship between the openings 14a and the unit entity portions 14b 'will be referred to below as simply referred to as "Inverted"). For example, the picture element electrode 1 4 G shown in FIG. 9 has an inverse relationship between the opening 14 a of the picture element electrode 14 and the unit solid portion 14 b ′ in FIG. 1 A after being inverted. The obtained pattern. The function of the picture element electrode 14 with an inverted pattern is substantially the same as that of the picture element electrode 14 in FIG. 1A. When the opening 1 4 a and the unit solid portion 14W are generally square shapes (picture element electrodes 1 4 Η and 1 4 I shown in FIG. 10A and FIG. 10B, respectively), the inverted pattern is substantially -39- 581921 (35) Description of the Invention The continuation sheet will be the same as the original pattern. Similarly, when the pattern of FIG. 1A is inverted to the pattern of FIG. 9, it is better to be able to form a part (generally half or a quarter) of openings 1a, so that the picture element electrode 1 The edge portion of 4 forms a unit solid portion Mb ′ having rotational symmetry. With this pattern, the effect of the oblique electric field can be obtained at the edge portion of the picture element area, just like the center portion of the picture element area, so that a stable radial shape can be achieved throughout the picture element area Tilt alignment. Next, the picture element electrode 14 of FIG. 1A and the picture element electrode 14G of FIG. 9 (which has a pattern obtained by inverting the patterns of the picture element electrode 14's openings 14a and the unit solid portion 14b ' ) To discuss which of the two inverted patterns should be used. Regardless of the pattern used, the perimeter of each opening 14a is the same. Therefore, there is no difference between the two patterns in terms of the function of generating an oblique electric field. However, the area ratio of the unit solid portion Mb '(compared to the total area of the picture element electrode 14) between the two patterns may be different. In other words, the area of the solid portion 14b (the portion where the conductive film is present) used to generate an electric field acting on the liquid crystal module of the liquid crystal layer may be different between the two. The voltage applied to the liquid crystal domain formed in the opening 14a will be lower than the voltage applied to the other liquid crystal domain formed in the solid portion 14b. Therefore, for example, in a normal black mode display, the liquid crystal domain formed in the opening 14 a is relatively dark. Therefore, as the area ratio of the openings 14a increases, the display brightness decreases. Therefore, it is better to refer to these entities -40- 581921 (36) Description of the Invention Continued 1 4 b The higher the area ratio, the better. In the pattern of FIG. 1A and the pattern of FIG. 9, which type of the area ratio of the solid portion 14 b is relatively high depends on the pitch (size) of the unit lattice.

FIG. 11A is a schematic diagram of a unit lattice of the pattern in FIG. 1A, and FIG. 1B is a diagram of the pattern in FIG. 9 (with an opening 14a as the center of each lattice). Schematic representation of the unit lattice. In FIG. 11B, a portion (a branch portion extending in four directions from this circular portion) for connecting adjacent unit solid portions 14bf in FIG. 9 has been omitted. The length (pitch) of one side of the square unit lattice is represented by "p", and the distance between the opening 14a (or the unit solid portion 14b ') and the side of the unit lattice (the side space of Width) is represented by "s".

Samples of various image element electrodes 14 having different pitches p and side spaces s have been manufactured by the present invention to test the stability of the radial tilt alignment. Therefore, I have found that if an image element electrode 14 having a pattern shown in FIG. 1A (hereinafter referred to as a “forward pattern”) is used, the side space s must be about 2.75 μηι or more to generate radiation. The oblique electric field required for the oblique oblique alignment. I have found that if an image element electrode 14 having a pattern shown in FIG. 1 1 B (hereinafter referred to as a “negative pattern”) is used, the side space s must be about 2.25 μm or more in order to obtain a radial shape. The tilted electric field required for tilted alignment. For each pattern, the method of checking the area ratio of the solid part 1 4 b is to change the value of the distance p to fix the side space s to the upper lower limit value. The results are shown in Table 1 below and Fig. 1 1C. -41-581921 (37) Description of the invention continued [Table 1] Pitch ρ (μηι) Solid part positive (Figure 1 A) Area ratio (%) Negative (Figure 11B) 20 41.3 52.9 25 47.8 47.2 30 52.4 43.3 35 55.8 40.4 40 58.4 38.2 45 60.5 36.4 50 62.2 35.0 As can be seen from Table 1 and Figure 1 1C, when the distance p is about 25 μm or more, the forward pattern (Figure 1 1A) has a higher solid part The area ratio of 14b; when the distance p is less than about 25 μηι, the negative pattern (FIG. 1B) has a higher area ratio of the solid portion 14b. Therefore, in terms of display brightness and alignment stability, what pattern should be adopted will change at a critical interval p of about 25 μm. For example, when there are three or less unit lattices in the width direction of the 75 μηι picture element electrode 14 in the width direction, it is best to use the forward pattern in FIG. 1 A; when there are more than four When using a unit lattice, it is best to use the negative pattern in Figure 1 1B. As for the patterns other than those shown here, the positive pattern and the negative pattern can be selected in the same manner so as to obtain a larger area ratio of the solid portion 1 4 b. The number of cell lattices is determined as follows. The size of each unit lattice is calculated in order to arrange more than one (integer) unit lattice at -42-581921 (38) Description of the Invention Continued Picture element electrode 1 4 (horizontal or vertical) And calculate the area ratio of the solid part for each calculated unit lattice size. Then, a unit lattice size having the largest solid portion area ratio is selected therefrom. Please note that when the diameter of the unit solid part Mb '(for the positive pattern) or the diameter of the opening 1 4 a (for the negative pattern) is less than 1 5 μm, the alignment adjustment force caused by the inclined electric field It will decrease, so it ’s not easy to get stable

Radial tilt alignment. The lower limit is for the liquid crystal layer 30 having a thickness of about 3 μm. When the thickness of the liquid crystal layer 30 is less than about 3 μm, even if the diameter of the cell solid portion 14bf and the diameter of the openings 14a are smaller than the lower limit value, stable radial tilt alignment can be obtained. When the thickness of the liquid crystal layer 30 is greater than about 3 μm, in order to obtain a stable radial tilt alignment, the lower limit values of the diameter of the unit solid portion 14bf and the diameter of the opening 14a must be higher than the lower limit shown above. Limit.

Note that it will be explained later that if a protrusion is formed in the opening 14a, the stability of the radial tilt alignment can be improved. However, the cases shown above assume that the protrusions are not formed. As described above, by providing an electrode structure for applying an alignment adjustment force and forming a liquid crystal domain exhibiting a radial oblique alignment in the image element region, a display with a wide viewing angle can be realized. However, the inventors found that the display quality cannot be sufficiently improved only by providing the electrode structure as described above, which depends on the openings 14a of the picture element electrode 14 and the busbars on the TFT substrate 100a. (A group of interconnected lines) the positional relationship between the edges. In the liquid crystal display device 100 of the present invention, the opening 14a of the picture element electrode 14 and the edge of the bus bar -43-581921 (39) Description of the invention The continued margin has the position described below Relationship, which enables high-quality display. Referring to FIG. 12, the positional relationship between the openings 14a of the picture element electrodes 14 of the liquid crystal display device 100 of the present embodiment and the edges of the bus bars 18 will now be described. FIG. 12 is a schematic plan view of one image element region of the liquid crystal display device 100 of the specific embodiment. Note that T F T where each picture element region is located above the TFT substrate 100a is omitted in the following drawings. As shown in FIG. 12, the TFT substrate 100a of the liquid crystal display device 100 includes a picture element electrode 1 4 for each picture element region on a side close to the liquid crystal layer 30; an electrical connection is made to the figure The image element electrode 14 is used as a T FT (not shown) as a switching element; and the bus line 18 includes a gate bus line (scan line) 15 and a source bus line electrically connected to the TFT. Line (signal line) 1 6. In this embodiment, the bus bar 18 further includes a storage capacitor line 17 for forming a storage capacitor. In this specific embodiment, as shown in FIG. 12, at least one opening 14 a in the bus line 18 is stacked on the bus line 18 in each image element area. More specifically, between the openings 14 a in the bus bar 18, the openings in the gate bus 15 and between two adjacent unit solid portions 14 b ′ 1 4 a will also be stacked on the busbar 18 (gate busbar 15). Therefore, when viewed from the side of the TFT substrate 100a, the position of the gate bus bar 15 will cover the opening 14a located between two adjacent unit solid portions 14b '. When viewed from this side of the counter substrate 100b, the unit solid portion 14b 'inserted between the openings 14a will cover the edge of the gate busbar 15. Here, the gate bus line 15 is composed of branch portions extending toward the openings 14a between the solid portions 14W of the continuation page, and is located at the phase. The openings 14a between the adjacent unit solid portions 14b 'will also be stacked on the gate busbar 15. As described above, in the liquid crystal display device 100, at least one of the openings 14a located in the bus bar 18 will be stacked on the bus bar 18, so that a South-quality Significantly. The reason will be described below with reference to Fig. 13, Fig. 14A, Fig. 1 4B, Fig. 16 A, and Fig. 16 B, and the openings 1 4a in the bus bar 18 are not stacked on the Compare the situation on the bus line 18. FIG. 13 is a schematic plan view of the liquid crystal display device 700, wherein the openings 14a in the bus bar 18 are not stacked on the bus bar 18. 14A and FIG. 14B are schematic alignment diagrams of the liquid crystal module 3 0 a located near the openings 1 4 a in the gate bus bar 15 of the liquid crystal display device 700, where FIG. 14A is 14B is a plan view, and FIG. 14B is a cross-sectional view taken along line 1 4B-1 4B ′ of FIG. 14A. FIG. 16A and FIG. 16B are schematic alignment diagrams of the liquid crystal module 30a located near the opening 14a in the gate bus bar 15 of the liquid crystal display device 100, of which FIG. 16A 16B is a plan view, and FIG. 16B is a cross-sectional view taken along line 16B-16B ′ of FIG. 16A. When driving the liquid crystal display device, a preset signal (voltage) for driving the liquid crystal display device must be applied to the bus line 18 located in the TFT substrate 100a, so the bus line 18 and the An electric field is generated between the counter electrodes 22. Therefore, an oblique electric field is generated near the edge of the bus bar 18. However, the alignment adjustment force caused by the inclined electric field does not match the alignment adjustment force caused by the inclined electric field generated by the edge portion of the opening 14a. Therefore, if the openings 1 4 a -45-581921 (41) formed in the bus bar 18 are formed, the liquid crystal domain in the continuation page is caused by the inclined electric field generated near the edge of the bus bar 18 When the effect of the alignment adjustment force is applied, the alignment of the liquid crystal domain is disturbed, thereby forming a distorted radial tilt alignment. For example, as shown in FIG. 13, in the liquid crystal display device 700, the openings 14a in the busbar 18 are not stacked on the busbar 18, so When the applied voltage is present, the liquid crystal module 3 0 a located near the opening 14 a in the gate bus line 15 will be aligned to the following result. As shown in FIG. 14B, when an applied voltage exists, the liquid crystal module 3 0a at the edge portion of the opening 1 4 a will be turned counterclockwise by the inclined electric field generated near the edge of the opening 1 4 a. The direction is inclined, and the liquid crystal module 3 0 a near the edge of the gate bus line 15 is tilted clockwise by the inclined electric field generated near the gate bus line 15. Therefore, as shown in FIG. 14A, the liquid crystal layer 30 in the opening 14a will form a liquid crystal domain with a distorted radial oblique alignment (a flat circular shape in the illustrated example). . Because adjacent liquid crystal domains have a tendency to maintain their alignment continuity, the alignment interference of the liquid crystal domains located in the openings 14a in the bus bar 18 will also affect the adjacent liquid crystal domains (that is, formed in Alignment of the liquid crystal domain in the adjacent cell entity portion 14bf). Therefore, the liquid crystal domain alignment in the adjacent unit solid portion 14bf is also disturbed. In the liquid crystal domain, which has a distorted radial tilted alignment due to its disturbed alignment, its alignment is quite unstable and easily disintegrated. Therefore, it takes a long time for the alignment of such liquid crystal domains after the voltage is applied Reached steady state. Therefore, the above-mentioned alignment interference will reduce the response speed. -46- 581921 (42) Continued description of the invention (destroying response characteristics).

Furthermore, the liquid crystal layer 30 in each picture element region will reach the stable state of this distorted radial tilt alignment, where the orientation has been disturbed, and the disturbed orientation in each picture element region is different . Therefore, the phenomenon of afterimage will occur, in which after the image switching signal is input, the image shown above still exists. This is because if the alignment of the liquid crystal layer 30 in different picture element regions is different, the transmittance in different picture element regions will also be different. Specifically, the alignment of the liquid crystal layer 30 between the image element region converted from the white display to the intermediate grayscale display and the image element region converted from the black display to the intermediate grayscale display will have a significant difference, and this The difference in transmittance between iso-image element areas is likely to cause afterimages. The reason is as follows. In the white display, the oblique electric field generated at the edge portion of the opening 14a will exert a very strong alignment adjustment force, so the alignment of the liquid crystal layer 30 is very stable. Therefore, the alignment of the liquid crystal layer 30 is very stable even after switching to the intermediate gray scale display. In contrast, when switching from a black display to a middle grayscale display, the alignment adjustment force caused by the tilted electric field generated at the edge portion of the opening 14a is very weak, so the alignment of the liquid crystal layer 30 is easily broken. In contrast, the liquid crystal display device 100 of the present invention is designed to have at least one opening 14a in the bus bar 18 (specifically, located in the gate bus bar 15 and located in two phases). The openings 1 4 a between adjacent unit solid parts 1 4b ′ will be stacked on the busbar 18 (gate busbar 1 5), as shown in FIG. 12, so it is located on the busbar The edge of the busbar 18 near the opening 14a of the busbar 18 will be covered by the unit element of the picture element electrode 14-47-581921 (43) Description of the invention continued on the body 14b ' . Therefore, in the vicinity of the openings 14a stacked on the bus bar 18, the liquid crystal panel group 30a of the liquid crystal layer 30 will be subjected to the early element body part 1 4b of the image element region 14 Electrical shielding so that it is not affected by the oblique electric field generated in the vicinity of the edge of the bus bar 18. Therefore, the liquid crystal module 30a of the liquid crystal layer 30 is not affected by the alignment adjustment force caused by the inclined electric field generated near the edge of the bus bar 18, so its alignment is only caused by the opening Adjust the tilt electric field generated at the edge part of 1 4 a. Therefore, in the liquid crystal display device 100 of the present invention, the alignment is not in the liquid crystal domain formed in the openings 1 4 a stacked on the bus bars 18 or in the openings 1. The liquid crystal domain in the unit solid portion 14b ′ near 4a is disturbed, so it is possible to avoid reducing the response speed (destroying the response characteristic) and avoiding the afterimage phenomenon, thereby achieving high-quality display. Please note that although the oblique electric field generated near the edge of the busbar 18 will not only cause the reduction of the response speed and the afterimage phenomenon described above, but also the decrease in contrast, if the busbar 18 is caused by By using a light-shielding material, the contrast can be avoided. This will now be explained in more detail. As described above, an oblique electric field is generated near the edge of the bus bar 18, and it is generated regardless of whether a voltage is applied to the liquid crystal layer 30 between the picture element electrode 14 and the counter electrode 22. The inclined electric field. Therefore, in a liquid crystal display device that performs display in a general black mode, when no voltage is applied, if the liquid crystal module 3 0 a located near the edge of the bus bar 18 is caused by the alignment adjustment force caused by the inclined electric field If it is tilted, light leakage may occur, thereby reducing contrast. Specifically, because the gate bus -48-581921 (44) description of the invention, the continuation of the cable 15 is under a very high voltage (0 FF voltage) most of the time to maintain the 0 FF state of the TFT, Therefore, the degree of light leakage near the edge of the gate bus line 15 is very important. In the liquid crystal display device 100 of the present invention, the edge of the bus bar 18 near the opening 14 a stacked on the bus bar 18 will be the unit entity of the image element area 14 The portion 14b 'is covered, so that the liquid crystal module 30a of the liquid crystal layer 30 is electrically shielded from the influence of the oblique electric field generated in the vicinity of the edge of the bus bar 18. Therefore, the liquid crystal module 30a of the liquid crystal layer 30 will not be tilted by the alignment adjustment force caused by the inclined electric field. Although the liquid crystal module 3 0 a of the liquid crystal layer 30 in the opening 14 a stacked on the bus line 18 may be generated between the bus line 18 and the counter electrode 22. The inclined electric field is inclined, but if the busbar 18 is made of a light-shielding material, the openings stacked on the busbar 18 will not be illuminated. Therefore, if the bus bar 18 is made of a light-shielding material, it is possible to avoid a reduction in contrast due to light leakage, and thus a higher quality display can be achieved. Furthermore, if the bus bar 18 is made of a light-shielding material, it can suppress unevenness in the display plane (ie, local variation of contrast), thereby improving the display quality, which will be described later. Due to the inclined electric field generated near the edges of the busbar 18, residual charges may appear in the openings 14a (openings of the insulating material are exposed), and if located in the busbar 18, If the liquid crystal module 3 0 a in the opening 1 4 a is tilted due to the influence of the residual electric charge, it will lead to -49- 581921 (45) Description of the invention and the continuation of the page will cause light leakage. Although the degree of the residual charge varies with the surface condition of the insulating material, the surface condition of the insulating material may change when the alignment film is printed or the liquid crystal material is ejected. Therefore, in a liquid crystal display device, the residual charge in the display plane is changed. If the residual charge changes in the display plane, the degree of light leakage will also change in the display plane, resulting in a local change in contrast. Specifically, as described above, since a very high voltage is applied to the gate busbar 15, the gate busbar 15 is particularly important for the influence of unevenness. In the liquid crystal display device 100 of the present invention, when the bus bar 18 is made of a light-shielding material, the openings 1 4 a stacked on the bus bar 18 will be used by the bus bar. The lines 18 are shielded, so that the above-mentioned unevenness can be avoided, and thus the display quality can be improved. Furthermore, in the vicinity of the edge of the internal gate bus bar 15 of the liquid crystal display device 7 0 shown in FIG. 13, a conductive film (the solid portion 1 4 b of the picture element electrode 1 4) is not formed in some areas. ), As shown in FIG. 15A (which is a cross-sectional view along the line 15A-15A 'along FIG. 13); in some regions, there is a conductor film forming the picture element electrode 14 as shown in FIG. 15B (which is 15B-15B% cross-sectional view along the straight line in Figure 13). Therefore, in a region where the conductor film (solid portion 14b) is not formed near the edge of the gate busbar 15, the impurity ions are adsorbed by the electric field generated by the gate busbar 15 On the surface of the TFT substrate 100a, as shown in FIG. 15A, alignment interference occurs due to the adsorbed impurity ions (hereinafter referred to as "cumulative charge"). Therefore, even if the busbar 18 is made of light-shielding material, it will still be -50- 581921 (46) Description of the Invention Continued because each opening part near the gate busbar 15 (Figure The accumulated charge in the area LL) indicated by the dashed line in FIG. 13 causes alignment interference, thereby causing light leakage. In contrast, in the liquid crystal display device 100 of the present invention, most of the areas that are seriously affected by the electric field caused by the gate busbar 15 (that is, the area near the gate busbar 15) are mostly The conductive film (solid portion 14b) of the picture element electrode 14 is formed in the region of the pixel element, as shown in FIG. 15B. Therefore, alignment interference caused by the accumulated charge can be avoided, and light leakage can be avoided. In addition, the impurities that cause accumulated charges are not evenly distributed in the display plane, but are generally localized in a striped pattern on the display plane. This is because when the liquid crystal material is ejected through a plurality of ejection ports arranged at a predetermined interval, the liquid crystal material flows in the regions between the ejection ports at a much slower speed than other regions, so the impurities will be Partially concentrated in these areas. Therefore, the degree of formation or loss of accumulated charge may be different between the stripe-shaped region (region with more impurities) and other regions (regions with less impurities) where impurities are concentrated. The degree of light leakage is also different. Therefore, in the liquid crystal display device 700 shown in FIG. 13, the stripe-shaped region will show a “black streak” at a position where the brightness is higher than other regions, and at a position where the brightness is lower than other regions, it will appear. "White streaks" cause uneven display. On the contrary, in the liquid crystal display device 100 of the present invention, light leakage due to the accumulated charge can be avoided as described above, and thus the display can be prevented from being uneven.

Please note that although the above description is directed to at least one of the openings 14a located in the bus bar 18 in each picture element area (which is located in the gate bus line 15 and is located in the unit entity portion 14b ') are stacked on the bus bar 18, but the present invention is not limited thereto. However, in the case where at least one of the openings 14a in each of the image element regions located in the busbar 18 and between the unit solid portions 14b 'is stacked on the busbar 18, It can avoid the alignment interference in the liquid crystal domain, so it can avoid reducing the response speed (destroying the response characteristics) and avoiding the afterimage phenomenon.

In order to avoid the alignment interference caused by the inclined electric field generated near the edge of the busbar 18, it is better to increase the proportion of the openings 14a superimposed on the busbar 18, that is, to increase The edge portion of the bus bar 18 covered by the unit solid portion 14bV of the picture element region 14 is. However, when the bus bar 18 is made of a light-shielding material, increasing this ratio will reduce the aperture ratio. Therefore, the ratio of the openings 14a stacked on the bus bar 18 is more suitable depending on the application of the liquid crystal display device, and the expected response characteristics and aperture ratio must be considered. Of course, not only the openings 1 4 a located between two adjacent unit solid portions 14 b ′ may be stacked on the busbar 18, but also other openings 1 4 a located on the busbar 18. Can be stacked on the busbar 18. For example, in the plurality of openings 1 4 a of the picture element electrode 14, all the openings 1 4 a located in the gate busbar 15 can be stacked on the busbar 18, The liquid crystal display device 100A shown in FIG. 17. -52- 581921 (48) Description of the invention Continuation page In the liquid crystal display device 100 shown in FIG. 12, a part of the opening 1 4 a is located at the corner of the picture element area and is not stacked on the bus bar. Above 18 (near the intersection of gate bus line 15 and source bus line 16). In contrast, in the liquid crystal display device 100A shown in FIG. 17, even at the corner of the picture element area, the gate bus line 15 is covered by the unit solid portion 14b ′, and all are located at the gate. The openings 14 a in the pole busbar 15 are all stacked on the busbar 18.

In the liquid crystal display device 100A shown in FIG. 17, a relatively large portion of the edge of the gate bus bar 18 will be covered by the unit solid portion 14 bf of the picture element electrode 14, so the effect of preventing alignment interference is prevented. better. However, please note that the part of the opening 14a located at the corner of the picture element area is also superimposed on the busbar 18, compared with the arrangement shown in FIG. 12, in the gate The area at the intersection of the bus line 15 and the source bus line 16 is relatively large, so the parasitic capacitance may be relatively large. Therefore, although the arrangement shown in Fig. 17 has a better effect on suppressing the alignment interference, the arrangement shown in Fig. 12 may have a better effect in reducing the parasitic capacitance. Of course, as long as at least one of the openings 14a in the busbar 18 (which is located in the gate busbar 15 and between the adjacent unit solid parts 1.4b1) is stacked, If the bus line 18 is shown in FIG. 12, alignment interference can be sufficiently suppressed and a very high display quality can be obtained. Please note that although the cases shown in FIGS. 12 and 17 each indicate that the gate busbar 15 includes a branch portion extending toward the opening 1 4 a, the opening 1 4 a is stacked on the gate The pole busbar 15 is above, but the present invention is not limited to this. Alternatively, the width of the gate bus bar 15 can be increased to give way to the gate bus bar -53-581921 (49) Description of the invention The openings 1 4 a in the continuation stream line 15 are stacked on the gate Above the pole busbar 15 (so that the edge of the gate busbar 15 will be covered by the unit solid part 14b 'of the picture element electrode 14), as shown in the liquid crystal display device 100B shown in FIG. 18 Situation. However, please note that as the width of the gate busbar 15 increases, the area of overlap between the gate busbar 15 and the unit solid part 14V will also increase. Comparing the arrangement shown in Figure 7 increases the gate-drain parasitic capacitance. Furthermore, when the bus bar 15 is made of a light-shielding material, the aperture ratio is also reduced compared with the arrangement shown in FIG. 12 and FIG. 17. Therefore, in order to reduce the parasitic capacitance value and improve the hole diameter ratio, the arrangement shown in Figs. 12 and 17 is a better arrangement. Furthermore, when the liquid crystal display device 100 is driven, the voltage applied to the gate bus line 15 is generally higher than the voltage applied to the source bus line 16. Therefore, the gate The effect of the inclined electric field generated near the edge of the bus line 15 on the liquid crystal modules is greater than the effect of the inclined electric field generated near the edge of the source bus line 16 on the liquid crystal modules. Therefore, at least one or all of the openings 1 4a in the busbar in the gate busbar are used to be stacked on the busbar 1 8 (gate busbar 15). If arranged, the liquid crystal display devices 100 and 100A shown in FIG. 12 and FIG. 17 can effectively avoid reducing the response speed and avoiding the afterimage phenomenon without causing an unnecessary reduction in the aperture ratio. Of course, it is also possible to adopt an arrangement in which at least one or all of the openings 14 a in the source bus line 16 are stacked on the bus line 18, or all of them are located on the gate electrode. The busbar 15 and the source busbar -54- 581921 (50) Description of the invention The openings 1 4a in the continuation page 16 are stacked on the busbar 18, as shown in Figure 19 And the liquid crystal display devices 100C and 100D shown in FIG. 20. In the liquid crystal display devices 100C and 100D shown in FIG. 19 and FIG. 20, the source busbar 16 includes branch portions each extending toward the opening 14a, and is not only located in the gate busbar 15 The openings 14a are stacked on the busbar 18, and the openings 14a in the source busbar 16 are also stacked on the busbar 18.

Furthermore, when necessary, at least one or all of the openings 1 4 a in the storage capacitor line 17 will be stacked on the bus line 18.

Please note that the present invention is not limited to the liquid crystal display device including the picture element electrodes 14 shown in FIG. 12 and the like, and the present invention can of course use other suitable liquid crystal display devices including the picture element electrodes 14 of various shapes. . The number and arrangement of the unit solid portions 14b 'of the picture element electrode 14 may be modified. For example, the present invention is also suitable for a liquid crystal display device having fewer unit solid portions 14 b ′ in each picture element electrode 14. For example, a liquid crystal display device may be used in which a source bus bar 16 is used. In each picture element region in the extending direction, three unit solid portions 14b 'are arranged. The above-mentioned liquid crystal display device 100 can be arranged in the same manner as the vertical alignment liquid crystal display device well known in the prior art (however, the picture element electrode 14 includes an opening 1 4 a, and the bus bar 18 (With a preset shape), and can be manufactured by well-known manufacturing methods. Generally, the vertical alignment layer (not shown) is located on one side of each of the picture element electrodes 14 and the counter electrode 2 2 which is closer to the liquid crystal layer 30, so that the negatively induced directions are aligned vertically. Heterosexual LCD module. The liquid crystal material may be a nematic liquid crystal with negative electrical anisotropy -55-581921 (51) Description of the Invention Continued material. A host-guest type liquid crystal display device can be obtained by adding a dichroic dye to this nematic liquid crystal material having negative anisotropy. The host-guest liquid crystal display does not require a polarizer. The above description is for the case where the busbar 18 has a preset configuration shape (a shape with branch portions as shown in FIG. 12 or a shape with a larger width as shown in FIG. 18) in order to allow the busbar An edge of the wiring line 18 may be covered by the solid part 14b (unit solid part 14b ') of the picture element electrode 14. However, the present invention is not limited to this. Alternatively, the unit solid part 14b '(or the openings 14a) of the picture element electrode 14 can be arranged in a preset arrangement without changing the shape of the bus bar 18 Let the edge of the bus bar 18 be covered by the solid portion 1 4 b. For example, the picture element electrode 14 may be formed such that a part of the unit solid portion 14b ′ (which has a shape equivalent to about half of the unit solid portion 14b ′) is located in the gate busbar 15, The liquid crystal display device 100E is shown in FIGS. 2A and 2B. In the liquid crystal display device 100E, a part of the unit solid part 14b 'is located in the gate bus line 15, so when a voltage is applied between the picture element electrode 14 and the counter electrode 22, The liquid crystal layer will form a part of the liquid crystal domain showing a radial oblique alignment in a part of the solid part 14b (-part of the unit solid part 14b ') located in the gate bus line 15. In the liquid crystal display device 10 O E, the edge of the gate bus bar 15 is covered by a part of the unit solid portion 14b ′ (the shape of which is approximately equivalent to half of the unit solid portion 14b ′), and branches Some of them are electrically connected to the unit solid parts 14N, as shown in Figure 2 A and Figure 2 1B. Therefore, the gate -56- (52) Invention Description Continued, The edges of the line 15 are covered by the solid portion 14b. That is, for example, an effect similar to that of the liquid crystal display device 1 1 U shown in FIG. 12 can be obtained. In the liquid crystal display device 100E, it is not necessary to use the κ tj branch portion to construct & read the gate busbar 15 or increase the width of the gate bus μ ^,,, < the width of the busbar 15 Therefore, even if the bus bar 18 is made of a light-shielding material, it does not cause an unnecessary decrease in the aperture ratio. Table 2 below shows each of the liquid crystal display devices 100E shown in FIG. 21A and FIG. 2B and the liquid crystal display device 100F shown in FIG. 22A and FIG. 22B (wherein the gate bus line 1 5 Including the branch portion) ("AR"). Table 2 also shows the ratio ("AR ratio") of the liquid crystal display device 100 £ to the aperture ratio of the liquid crystal display device 100F. [Table 2] 13, 15, 15, AR AR ratio AR AR ratio {Column LCD 100F 51.2% 101.2% 57.4% 100.9% LCD 100E 51.8% 58.0% AR As shown in Table 2, for 1 3 15 20 'AR ratio 100.8 % twenty two'

AR 58.3% AR ratios of 100.9% and 2 2π. For LCD panels, the aperture ratio of the liquid crystal display device 100E is improved by about 1% (0.8% to 1.2%). Please note that the values shown in Table 2 are, of course, 釺 and 对. For special specifications, a higher aperture ratio may be expected for the LCD specifications of the LCD. Although FIG. 2 1 Α and FIG. 2 1 B show < φ ^ ^ Α-touch, ', pain interpolar busbar 15 is overwritten by the physical element 1 4b of the picture element electrode 1 4,,, However, in the best case, at least one of the gate busbar 15 and the source pg, ®% busbar 16, 57, 581921 (53) I Description of invention continued

The edges of the bars are covered by the solid portions 14 b of the picture element electrodes 14. The unit solid portion 14b ′ may also be arranged in an alternative manner, so that the edges of the gate busbar 15 and the edges of the source busbar 16 are covered by the solid portion 14b of the picture element electrode 14 As shown in FIG. 23, the liquid crystal display device 100G. In the liquid crystal display device 100G, a part of the unit solid portion 14b1 (the shape of which is equivalent to about half of the unit solid portion 14b ') is located in the source busbar 16 as shown in FIG. 23, so The edges of the source busbar 16 will also be covered by the solid portion 14b of the picture element electrode 14. Therefore, the effect of avoiding the occurrence of alignment interference can be further improved. As described above, by correctly setting the arrangement manner of the unit solid part Mb ′ (or the openings 14a) of the picture element electrode 14, alignment interference can be avoided without changing the bus line 18. shape. Figures 2A and 2B, and Figures 2A and 25B respectively represent alternative liquid crystal display devices 100H and 1001 according to this embodiment of the present invention.

In each of the liquid crystal display devices 100H and 1001, the shape of each of the unit solid portions 14b ′ of the picture element electrode 14 is a general star shape, which has eight sides (edges), and has a Quadruple rotation axis. Furthermore, the openings 1 4 a have a general diamond shape. In the liquid crystal display device 100H, the edges of the gate busbar 15 are zigzag, so the edges of the gate busbar 15 will be imaged as shown in Fig. 2 4A and Fig. 2 4B. The solid portion 1 4 b of the element electrode 14 is covered. In contrast, in the liquid crystal display device 1001, a part of the unit solid part 14b ′ (which has a shape corresponding to about half of the unit solid part 14b ′) which is generally star-shaped is located in the gate bus bar 15 and It is located in the source busbar 16, so -58- 581921 (54) Description of the invention continued on the edge of the gate busbar 15 and the edge of the source busbar 16 will also be shown in Figure 2 5 A and FIGS. 2 to 5B are covered by the solid portion 14 b of the picture element electrode 14. Therefore, in the liquid crystal display device 1001, it is possible to avoid a situation where an unnecessary aperture ratio is lowered. Alternative to the preferred embodiment

The structure of one of the picture element regions of a liquid crystal display device 2000 according to an alternative embodiment of the present invention will now be described with reference to FIGS. 2A and 2B. Furthermore, in the following drawings, each element having substantially the same function as the corresponding element in the liquid crystal display device 100 will be represented by the same element symbol, and will not be described further below. Fig. 26A is a plan view seen from the direction of the normal line of the substrate, and Fig. 2B is a cross-sectional view taken along line 26B-26B 'of Fig. 26A. The state shown in Fig. 26B is a state when no voltage is applied to the entire liquid crystal layer.

As shown in FIGS. 2A and 2B, the liquid crystal display device 200 is different from the liquid crystal display device 100 in FIGS. 1A and 1B in that the TFT substrate 200a includes The protrusion 40 in the opening 1 a. A vertical alignment film (not shown) is provided on the surface of the protruding portion 40. The cross-section of the protruding portion 40 along the plane of the substrate 11 is generally a star-shaped cross-section, that is, the shape is the same as that of the opening 14 a, as shown in FIG. 2A. Please note that the adjacent protruding portions 40 are connected to each other, so that each unit solid portion 14b 'can be completely surrounded by a generally circular pattern. A cross section of the protruding portion 40 along a plane perpendicular to the substrate 11 is generally trapezoidal, as shown in FIG. 2 6B. Specifically, the cross section has a top surface 401 parallel to the plane of the substrate, and a side surface 40s inclined at an acute angle θ (< 90 °) from the plane of the substrate. Because it has -59- 581921 (55) description of the invention, the vertical alignment film (not shown) is continued to cover the relationship of the protruding portion 40, so the side 40s of the protruding portion 40 has an alignment adjustment force, and its direction The direction of alignment adjustment caused by the tilted electric field of the liquid crystal core: group 30a of the liquid crystal layer 30 is the same, so it can be used to stabilize the radial tilt alignment. The function of the protruding portion 40 will now be described with reference to Figs. 27A to 27D, Figs. 28A and 28B. First, the relationship between the alignment of the liquid crystal modules 30a and the surface structure with vertical alignment power will be described with reference to FIGS. 27A to 27D. As shown in FIG. 2A, due to the relationship between the alignment adjustment power of the surface with the vertical power (normally the surface of the vertical alignment film), the liquid crystal modules 30a in the horizontal plane will be aligned perpendicular to the surface. When the electric field indicated by the equipotential line EQ perpendicular to the axis alignment of the liquid crystal module 3 0 a is applied through the vertically aligned liquid crystal module 3 0 a, a moment is caused to cause the liquid crystal module 3 0 a to tilt clockwise. And the moment that causes the LCD module 30a to tilt in the counterclockwise direction will act on the LCD module 30a with the same probability. Therefore, for the liquid crystal layer 30 located between a pair of opposite electrodes in a parallel plate arrangement, a part of the liquid crystal module 30 a is subject to a clockwise moment, and a part of other liquid crystal modules Group 30a is subject to a counterclockwise moment. Therefore, the alignment cannot be changed very smoothly in accordance with the voltage applied to the entire liquid crystal layer 30. When an electric field represented by a horizontal equipotential line EQ is applied through a liquid crystal module 3 0 a arranged perpendicular to an inclined surface, as shown in FIG. 2B, the liquid crystal module 3 0 a Rotation can tilt the direction parallel to the potential line EQ (the example shown in the figure is clockwise). Then, like -60- 581921

Description of the Invention As shown in FIG. 2C on the following page, other adjacent liquid crystal modules 3 0 a arranged perpendicular to the horizontal plane will face the same direction (clockwise) as the liquid crystal module 3 0 a located on the inclined surface. ) Is tilted, so its alignment will be continuous (consistent) with the alignment of the liquid crystal module 3 0 a aligned perpendicular to the inclined surface.

As shown in FIG. 2D, for a surface having a concave / convex portion and a cross-section including a series of trapezoids, the liquid crystal module 3 0 a on the top surface and the liquid crystal module 3 0 a on the bottom surface are aligned. It is aligned with the alignment direction adjusted by other liquid crystal modules 30a in the inclined portion of the surface. In the liquid crystal display device 2000, the direction of the alignment adjustment force applied by the surface structure (protrusion) is aligned with the direction of the alignment adjustment force applied by the tilt electric field, so that the radial tilt alignment can be stabilized.

Each of the liquid crystal layers 30 of FIGS. 2A and 2B shown in FIGS. 28A and 2B is a schematic diagram of a state when a voltage is applied. The state diagram of the liquid crystal modules 30a shown in FIG. 2A at the time when the orientation of the liquid crystal layer 30a is just beginning to change (initial ON state). FIG. 2B is a schematic view showing a state where the alignment of the liquid crystal modules 30 a according to the applied voltage is changed and stabilized. The curves E Q in Fig. 2 A and Fig. 2 B represent isopotential lines. As shown in FIG. 26B, when the picture element electrode 14 and the counter electrode 22 have the same potential (that is, the state when no voltage is applied to the entire liquid crystal layer 30), the liquid crystal module in each picture element region 3 0 a will be arranged perpendicular to the surfaces of the substrates 1 1 and 21. The liquid crystal module 3 0 a which is in contact with the vertical alignment film (not shown) located in the side 40 s of the protruding portion 40 will be arranged perpendicular to the side 40 s and located near the side 40 s. The side of the LCD module 3 0 a will appear because it interacts with the surrounding LCD module 3 0 a (it is like the elastic link -61-581921 (57) invention description is the essence of its continuity) relationship. Tilt the alignment as shown. When a voltage is applied to the entire liquid crystal layer 30, a potential gradient shown by the medium potential line EQ in FIG. 2A is generated. The isopotential line EQ is parallel to the solid part 1 4 b and the counter electrode 2 2 in the liquid crystal layer 30 (which is located between the solid part 14 b of the picture element electrode 14 and the counter electrode 22). Surface, and it will descend in the area corresponding to the opening 14a of the picture element electrode 14, so it will be at the edge portion EG of the opening 14a (the surrounding portion of the opening 14a and its Inside, including the boundary thereof), an inclined electric field represented by the inclined portion of the equipotential line EQ is generated in each region of the liquid crystal layer 30 above. As described above, due to the relationship of the inclined electric field, the liquid crystal module 3 0 a above the right edge portion EG in FIG. 2 A is inclined (rotated) clockwise, and the liquid crystal module above the left edge portion EG 3 0 a will tilt (rotate) counterclockwise, as shown by the arrow in Figure 2 8 A, so as to parallel the isopotential line EQ. Therefore, the alignment adjustment force applied by the inclined electric field is the same as the alignment adjustment force applied by the side 40 s of each edge portion E G. As described above, the change of the alignment starts from the liquid crystal module 30a located in the inclined portion of the isopotential line EQ, and then reaches a stable alignment state shown in FIG. 2B. The liquid crystal module 3 0 a located near the center portion of the opening 1 4 a (that is, near the center portion of the top surface 4 01 of the protruding portion 40) is substantially equally affected by the liquid crystal module 3 0 a located at the opening 1 4 a. The influence of the individual alignment of the liquid crystal module 30a at the opposite edge portion EG will maintain its alignment perpendicular to the isopotential line EQ. The LCD module 3 0 a that is far away from the center of the hole 14 a (the top surface 40 t of the protruding portion 40) will be located nearer the edge because it is located closer to the edge -62- 581921 (58) Description of the Invention Continued Section EG The other liquid crystal modules 30a are tilted due to the influence of the alignment, thereby forming an inclined alignment symmetrical to the center SA of the opening 14a (the top surface 40t of the protrusion 40). An inclined alignment symmetrical to the center SA of the unit solid portion 14b 'is also formed in a region corresponding to the unit solid portion 14b' (which is surrounded by the openings 14a and the protruding portions 40). As described above, in the liquid crystal display device 200, as in the liquid crystal display device 100, liquid crystal domains each having a radial oblique alignment are formed corresponding to the openings 14a and the unit solid portions 14b '. Since the protruding portions 40 are provided so as to completely surround each unit solid portion 14b · in a generally circular pattern, each liquid crystal domain can be formed corresponding to a generally circular region surrounded by the protruding portions 40. Furthermore, the function of the side of the protrusion 40 located in the opening 14a can be used to apply the liquid crystal module 30a in the vicinity of the edge portion EG of the opening 14a toward the inclined electrical field. The alignment adjustment force is tilted in the same direction, so that the radial tilt alignment can be stabilized. Of course, the alignment adjustment force applied by the inclined electric field can only work when the applied voltage exists, and its strength depends on the strength of the electric field (the level of the applied voltage). Therefore, when the magnetic field strength is very small (that is, when the applied voltage is very low), the alignment adjustment force applied by the inclined electric field is very weak. At this time, when pressure is applied to the liquid crystal panel, the radial inclined alignment may become It will collapse due to the floating of the liquid crystal material. When the radial tilt alignment collapses, it cannot be restored unless a very strong voltage is applied to generate a tilted electric field to apply a very strong alignment adjustment force. On the contrary, regardless of the applied voltage, the alignment adjustment force generated by the side 40 s of the protrusion 40 must be applied, and because of the well-known in the prior art -63-581921 (59) The relationship of the "mistaken effect" of the alignment film is extremely strong. Therefore, even if the liquid crystal material floats and the radial tilt alignment has disintegrated, the liquid crystal module 3 0 a in the vicinity of the lateral side 40 s of the protruding portion 40 can still maintain the same alignment direction as the radial tilt alignment. . Therefore, once the floating phenomenon of the liquid crystal material stops, the radial tilt alignment can be easily restored. Therefore, the liquid crystal display device 200 has the additional advantages of resisting stress in addition to the advantages of the liquid crystal display device 100. Therefore, the liquid crystal display device 2000 is suitable for devices that are often subjected to stress, such as PC and PD that are often carried around. When the protruding portion 40 is made of an electrophoretic material with extremely high transparency, the advantage of improving the display effect of the liquid crystal domain formed in the region corresponding to the opening 14a can be obtained. When the protruding portion 40 is made of an opaque electromotive material, it can avoid the hysteresis caused by the liquid crystal module 3 0 a in the oblique alignment of the lateral portion 40 s of the protruding portion 40. Advantages of light leakage. For example, whether a transparent or opaque dielectric material should be used depends on the application of the liquid crystal display device. In either case, the use of a photosensitive resin has the advantage that the steps of patterning the protruding portions 40 corresponding to the openings 14a can be simplified. In order to obtain sufficient alignment adjustment power, when the thickness of the liquid crystal layer 30 is about 3 μm, the height of the protrusion 40 is preferably between about 0.5 μm and about 2 μm. Generally, the height of the protrusion 40 is preferably between about 1/6 and 2/3 of the thickness of the liquid crystal layer 30. As described above, the liquid crystal display device 2 0 0 includes the protruding portion 40 located in the opening 1 4 a of the continuation sheet of the picture element 1 4 -64- 581921 (60), and the protruding portion 40 An alignment adjustment force is applied to the side 40 s in the same direction as the direction of the alignment adjustment force f applied by the inclined electric field of the liquid crystal module 30 a of the liquid crystal layer 30. Now referring to Figs. 29A to 2C, the better conditions will be explained so that the alignment adjustment force applied by the side 40s has the same direction as the alignment adjustment force applied by the inclined electric field. 29A to 29C are schematic cross-sectional views of the J-series liquid crystal display devices 200A, 200B, and 200C. 29A to 29C correspond to FIG. 28A. The liquid crystal display devices 200A, 200B, and 200C all have a protruding portion in the opening 14a, but the positional relationship between the entire protruding portion 40 as a single structure and its corresponding opening 14a is different from the liquid crystal display.装置 200。 The device 200. In the above-mentioned liquid crystal display device 200, the protruding portion 40 as a single structure is formed in the opening 14a, and the bottom surface of the protruding portion 40 is smaller than the opening 14a, as shown in FIG. 2 8 A shown. In the liquid crystal display device 200A shown in FIG. 2A, the bottom surface of the protruding portion 40A is aligned with the opening 14a. In the liquid crystal display device 200B shown in FIG. 29B, the bottom surface of the protruding portion 40B is larger than the opening 14a, so it covers a part of the solid portion (conductor film) 14b around the opening 14a. The solid portion 14b is not formed in the side surface 40s of any one of the protruding portions 40, 40A, and 40B. Therefore, as shown in the individual diagrams, the isopotential line EQ is substantially horizontal above the solid portion 14b and will fall in the opening 14a. Therefore, just like the protruding portion 40 of the liquid crystal display device 200, the side surface 40s of the protruding portion 40A of the liquid crystal display device 200A and the side surface 40s of the protruding portion 40B of the liquid crystal display device 200B will exert an alignment adjustment force, and their directions will be consistent with this. Alignment adjustment force -65-581921 (61) applied by a tilted electric field Description of the invention The direction of the continued pages is the same, so the radial tilted alignment can be stabilized. Conversely, in the liquid crystal display device 200C shown in FIG. 29C, the bottom surface of the protruding portion 40C is larger than the opening 14a, and therefore a solid portion 14b extending partially into the area above the opening 14a is formed in Among the side surfaces 40s of the protruding portion 40C. Due to the influence of the solid portion 14b portion formed in the side surface 40s, a ridge portion appears in the isopotential line EQ. The gradient of the ridge portion in the equipotential potential line E Q is opposite to the gradient of other portions in which the equipotential potential line E Q descends in the opening 14 a. This means that an oblique electric field is generated, the direction of which is opposite to that of the oblique electric field used to orient the liquid crystal modules 30 a into a radial oblique alignment. Therefore, in order for the alignment adjustment force of the side 40 s to have the same direction as the alignment adjustment force applied by the inclined electric field, the solid part (conductor film) 1 4b is preferably not formed in the side 40 s. Next, a cross-sectional structure of the protruding portion 40 along a line 30A-30A 'of FIG. 2A will be described with reference to FIG. As described above, since the protruding portions 40 in FIG. 2A are formed so as to completely surround each unit solid portion 14b ′ in a generally circular pattern, the protruding portions 40 are formed to connect adjacent ones. A portion of the unit solid portion 14 b ′ (a branch portion extending from the circular portion in four directions). Therefore, in the step of depositing the conductor film into the solid portion 14b of the picture element electrode 14, a discontinuity may occur in the protruding portion 40 or may be post-processed in the process Layering occurs in. In view of this, in the liquid crystal display device 200D shown in FIGS. 3A and 3B, projections 4 0 D that are not related to each other are formed, and each projection 4 0 D is -66- 581921 (62) DESCRIPTION OF THE INVENTION The continuation sheet is completely contained in the openings 14a so that a conductor film intended to be the solid portion 14b is formed in the flat surface of the substrate 11, thereby eliminating the possibility of discontinuity or delamination. Although the protruding portions 40D do not completely surround each of the unit solid portions 14b 'in a generally circular pattern, a generally circular liquid crystal domain corresponding to each of the unit solid portions 14b' will be formed, and can be like the above example. The radial tilt alignment of the unit solid part 141V is ground stabilized. The effect of stabilizing the radial inclined alignment obtained by forming the protruding portion 40 in the opening 1 4 a is not limited to the above-mentioned pattern of the opening 1 4 a, and it is also applicable to the opening 1 4 In any of the various patterns of a, the above-mentioned effect can be obtained. In order that the protruding portion 40 can produce an effect sufficient to resist stress to stabilize the alignment, the pattern of the protruding portion 40 (pattern viewed from the normal direction of the substrate) preferably covers the liquid crystal layer as much as possible. 3 0. Therefore, for example, as compared with a negative pattern with circular openings 1 4a, a positive pattern with a circular unit solid portion 14b 'can obtain an alignment stabilization effect of a larger protrusion 40. With the above electrode structure (the openings are located in the picture element electrodes), it may not be possible to apply a sufficient voltage on the liquid crystal layer in the region corresponding to the openings, and it may not be possible to obtain sufficient hysteresis changes, thereby reducing the luminous efficiency. In view of this, it is possible to provide an electromotive layer on one side of the picture element electrode (upper electrode) with openings away from the liquid crystal layer, and the extra electrode (lower electrode) is provided through the electromotive layer, so At least a part is located opposite the opening of the picture element electrode (that is, a double-layer electrode is used). In this way, a sufficient voltage can be applied to the liquid crystal layer in the region corresponding to the opening, thereby improving the luminous efficiency and / or response characteristics. -67- 581921 (63) Description of the invention Continuing the page One of the picture elements of the liquid crystal display device 3 0 0 with picture element electrode 15 (double-layer electrode) shown in each of FIGS. 3 2 A to 3 2 C A schematic cross-sectional view of the structure of the region, wherein the electrode 15 includes a lower electrode 12, an upper electrode 14 and an electrolyzed liquid crystal layer 13 located therebetween. The upper electrode 14 of the picture element electrode 15 is substantially equivalent to the picture element electrode 14 described above, and includes a plurality of openings and a solid portion, both of which can have any of the above-mentioned shapes, and It can be arranged in any of the various patterns mentioned above. The function of the picture element electrode 15 having a double-layered structure will now be explained. The picture element electrode 15 of the liquid crystal display device 300 includes a plurality of openings 14a (including 14a1 and 14a2). The system shown in FIG. 32A is an alignment schematic diagram of the liquid crystal module 30 a in the liquid crystal layer 30 when no voltage is applied (0 F F state). The state diagram (initial ON state) when the alignment of the liquid crystal modules 30a shown in FIG. 3B is just changed according to the voltage applied to the entire liquid crystal layer 30. Fig. 3 2C shows the state of the liquid crystal module 30a after the orientation is changed according to the applied voltage and has been stabilized. In FIGS. 3A to 3C, the lower electrode 12 (providing that the lower electrode 12 must be able to place the openings 14al and 14a2 oppositely through the induction layer 13) will overlap the openings 14al and 14a2, and The area between the openings 14al and 14a2 (the area where the upper electrode 14 is located) extends. However, the arrangement of the lower electrode 12 is not limited to this. For the openings 14a 1 and 14a2, an alternative arrangement can also be used to make the area of the lower electrode 12 2 the area of the opening 14a, or The area of the lower electrode 12 is the area of the opening 1 4 a. Therefore, the structure of the lower electrode 1 2 is not limited to any special structure, as long as the lower electrode 12 can -68- 581921 (64) Description of the invention The continuation page passes through the induction layer 13 and at least part of the openings 1 4 a is enough. However, when the lower electrode 12 is located in the opening 14a, there will be a region (gap region) in the plane viewed from the normal direction of the substrate 11 and there is no lower electrode in this region丨 2 also has no upper electrode 1 4. A sufficient voltage may not be applied to the entire liquid crystal layer 30 in a region opposite to the gap region. Therefore, in order to stabilize the alignment of the liquid crystal layer 30, a preferable system can greatly reduce the width of the gap region. Generally, the width of the gap region is preferably not more than about 4 µην. In addition, the lower electrode 12 (its position is opposite to the area where the conductive layer of the upper electrode 14 is located through the induction layer 13) has substantially no effect on the electric field applied to the entire liquid crystal layer 30. Therefore, such lower electrodes 12 need not be patterned. As shown in FIG. 3A, when the picture element electrode 15 and the counter electrode 22 have the same potential (the state when a voltage is not applied to the entire liquid crystal layer 30), the liquid crystal module in the picture element region 3 0 a will be arranged perpendicular to the surfaces of the substrates 11 and 21. For simplicity, it is assumed here that the upper electrode 14 and the lower electrode 12 of the picture element electrode 15 are at the same potential. When a voltage is applied across the entire liquid crystal layer 30, a potential gradient as shown in the medium potential line EQ in FIG. 3B is generated. In the liquid crystal layer 30 in the area between the picture element electrode 15 and the upper electrode 14 and the counter electrode 22, an equipotential is generated by paralleling the surfaces of the upper electrode 14 and the counter electrode 22 The uniform potential gradient represented by the line EQ. In the region of the liquid crystal layer 30 above the openings 14a 1 and 14a2 of the upper electrode 4, a potential gradient is generated according to the potential difference between the lower electrode 12 and the counter electrode 22. The potential gradient in the liquid crystal layer 30 will be affected by the electricity caused by the induced layer 13. The voltage drop • 69 · 581921 (65) The description of the continuation sheet of the invention, so the equipotential line EQ in the liquid crystal layer 30 will be The areas corresponding to the openings 14a 1 and 1 4a2 are lowered (a plurality of "low-voltage grooves" are caused in the isopotential line EQ). Because the lower electrode 12 is located in a region opposed to the openings 1 4a 1 and 14a2 through the electromotive layer 13, the bit lines are adjacent to the respective central portions of the openings 14a 1 and 14a2. The liquid crystal layer 30 also has a potential gradient represented by a part of the equipotential line EQ parallel to the planes of the upper electrode 14 and the counter electrode 22 (the "low-voltage tank bottom" of the equipotential line EQ). Thus, an inclined portion formed by the equipotential lines EQ will be generated in the liquid crystal layer 30 above the edge portion EG of the openings 14al and 14a2 (the surrounding portion of the opening and the inside thereof, including the boundary thereof). The inclined electric field represented. 1 It can be clearly seen from the comparison between FIG. 3 2 B and FIG. 2 A that the liquid crystal display device 3 0 0 has a lower electrode 12, so the liquid crystal domain is formed in a region corresponding to the opening 1 4 a There will also be sufficient electric field effect on the LCD module. There is a moment acting on the liquid crystal module 30a with negative induced anisotropy to guide the axis of the liquid crystal module 30a to be parallel to the equipotential line EQ. Therefore, the LCD module 3 0 a above the right edge portion EG in FIG. 3 2B will tilt (rotate) clockwise, while the LCD module 3 0 a above the left edge portion EG will rotate counterclockwise. Tilt (rotate) as shown by the arrow in Figure 3 2B. Therefore, the liquid crystal modules 30 a above the edge portions E G are aligned to correspond to the corresponding portions of the equipotential lines E Q. As shown in FIG. 3B, when the edge portions EG of the openings 14a 1 and 14a2 of the liquid crystal display device 3 0 0 are generated by the axis inclined to the liquid crystal module 3 0 a -70-581921 (66) Description of the Invention After the electric field indicated by a part of the equipotential line EQ on the following page, the liquid crystal modules 30a will be inclined in a direction parallel to the equipotential line EQ with a minimum rotation (in the figure) The example shown is counterclockwise), as shown in Figure 3B. For a liquid crystal module 3 0 a located in an electric field region indicated by an equipotential line EQ aligned with an axis perpendicular to the liquid crystal modules 3 0 a, it will The liquid crystal module 3 0 a in the inclined portion is inclined in the same direction, so as shown in FIG. 3C, its alignment is the same as that of the liquid crystal module 3 0 a in the inclined portion of the isopotential line EQ. Continuous (consistent). The orientation change of the liquid crystal modules 30a (starting from the liquid crystal module in the inclined portion of the isopotential line EQ) will proceed as described above and reach a stable state, that is, symmetrical to each opening. The oblique alignment (radial oblique alignment) of the center SA of the holes 14a 1 and 14a2 is shown in FIG. 3 2C. The liquid crystal module 3 0 a located in the region of the upper electrode 14 between the two adjacent openings 14 a 1 and 14 a 2 also has an oblique alignment, which is aligned with the openings 1 4 a 丨 and 1 4 a The alignment of the liquid crystal module 3 0 a at the edge portion of 2 is continuous (uniform). The liquid crystal module 3 0 a located between the edge portion of the opening 1 4 a 1 and the edge portion of the opening 1 4 a 2 is substantially affected by the liquid crystal module 3 0a at each edge portion, and therefore remains The same vertical arrangement as the liquid crystal module 30a located near the center portion > of each of the openings 14a1 and 14a2. Therefore, the liquid crystal layer above the upper electrode 14 between the two openings 14a1 and 14a2 will also exhibit a radial oblique alignment. Please note that the radial tilt alignment of the liquid crystal layer in each of the openings 14a 1 and 14a2 is different from the radial tilt alignment of the liquid crystal layer between the openings 14a 1 and 14a2. Observe the alignment near the liquid crystal module 3 0 a at the center of each region with the radial inclined alignment shown in Figure-71-581921 (67) Description of the Invention continued on 3 2 C, and find that the openings 14a 1 and The liquid crystal module 30a in the region 14a2 will be tilted into a cone toward the counter electrode, and the liquid crystal module 30a in the region between the openings 14al and 14a2 will be tilted to face the upper electrode 1 4 unfolding cone. Since the two radial tilt alignments are formed so as to coincide with the tilt alignment of the liquid crystal module 30a at the edge portion, the two radial tilt alignments are continuous with each other. As described above, when a voltage is applied to the entire liquid crystal layer 30, the liquid crystal modules 30a start from above the individual edge portions E G of the openings 14a 1 and 14a2 in the upper electrode 14. Then, the liquid crystal module 30a in the surrounding area is inclined to follow the radial inclined alignment of the liquid crystal module 30a above the edge portion EG. Therefore, a radial tilt alignment can be formed. Therefore, when the number of openings 1 4 a to be provided in each picture element area increases, the number of liquid crystal modules 30 0 a that will begin to tilt in response to the application of an electric field also increases, which can be shortened to the entire figure. The time required for the image element region to achieve radial tilt alignment. Therefore, by increasing the number of openings 1 4 a in the picture element electrode 15 to be provided in each picture element region, the response speed of the liquid crystal display device can be improved. Furthermore, by using a double-layer electrode including the upper electrode 14 and the lower electrode 12 as the picture element electrode 15, a sufficient electric field can be applied to the liquid crystal module located in the area corresponding to the opening 14 a. Thereby, the response characteristics of the liquid crystal display device are improved. Furthermore, by providing a protruding portion on the counter substrate to match the alignment adjustment structure of the TFT substrate (the electrode structure having openings as described above), the liquid crystal modules are aligned in a radial tilt. Alignment, you can advance -72-581921 (68) Description of the invention The continuation page stabilizes the liquid crystal domain alignment showing radial tilt alignment step by step. FIG. 33A and FIG. 33B are schematic diagrams of a liquid crystal display device 400 having a protruding portion 28 on an opposite substrate 400b. Fig. 33A is a plan view, and Fig. 33B and 1J are cross-sectional views taken along line 33B-33B 'of Fig. 33A. The liquid crystal display device 400 includes a TFT substrate 100a having an image element electrode 14 in which an opening 14a is formed; and a counter substrate 400b having a protruding portion 28 projecting toward the liquid crystal layer 30. Please note that the T F T substrate 100a is not limited to the arrangement shown in the figure, and it can also adopt any of the various arrangements described above. Each of the protrusions 28 in the anti-substrate 400b has a side surface 28s, which is inclined to the substrate plane of the anti-base 400b (the substrate plane of the transparent substrate 11). In the example shown, the protrusion 2 8 series is formed in the counter electrode 22. The surface of each protruding portion 28 has a vertical alignment power (generally a vertical alignment film (not shown) is formed to cover the protruding portion 2 8). Due to the anchoring effect, the liquid crystal modules 3 0 a will be aligned perpendicular to the side 2 8 s, as shown in Figure 3 3B. Therefore, the liquid crystal module 30 a located near the protruding portion 28 will exhibit a radial tilt alignment based on the protruding portion 28. Therefore, the protrusions 28 can align the liquid crystal modules 30 a in a radial oblique orientation by the structure of the surface (having a vertical alignment power). Furthermore, the protruding portion 28 is located in a region opposite to the solid portion 1 4 b of the picture element electrode 14, and more specifically, is located at a position opposite to the central portion of the unit solid portion 1 4 b ′. . With this arrangement of the protrusions 28, the tilt alignment of the liquid crystal module caused by the protrusions 28 will be aligned with the warp-73-581921 (69) Description of the invention The continuation page is formed by the alignment adjustment structure. The alignment direction of the radial oblique alignment of the liquid crystal domain in the region of the unit solid portion 14W of the picture element electrode. Because the projection 28 applies an alignment adjustment force regardless of the presence or absence of the applied voltage, a stable radial tilt alignment can be obtained in any gray scale, and it will also have the expected anti-stress effect. As described above, in the liquid crystal display device 400, the direction of the radial oblique alignment formed by the alignment adjustment structure is aligned with the direction of the radial oblique alignment formed by the protruding portion 28. Therefore, when the entire liquid crystal layer 3 When an applied voltage is present in 0 (that is, an applied voltage is present between the picture element electrode 14 and the counter electrode 22), the radial tilt alignment can be stabilized. Figures 3 4A to 3 4C are schematic diagrams. The system shown in FIG. 3 4A is not applied with voltage; the system shown in FIG. 34B is the state when the alignment has just started to change after the voltage is applied (initial ON state); and the system shown in FIG. 3 4C is applied with voltage Apply a steady state in between. As shown in FIG. 3A, even when no voltage is applied, the alignment adjustment force applied by the protruding portion 28 will still act on the nearby liquid crystal module 30a, so a radial tilted alignment can be formed . When the voltage is applied, the electric field shown by the equipotential line EQ shown in FIG. 3 4 B will be generated (via the alignment adjustment structure), and will be in each area corresponding to the opening 1 4 a and corresponding to A liquid crystal domain in which the liquid crystal module 30 a exhibits a radial oblique alignment is formed in each region of the solid part 14 b, and the liquid crystal layer 30 will reach a stable state as shown in FIG. 3 4C. The alignment direction of the liquid crystal module 3 0 a in each of the liquid crystal domains in the region corresponding to the solid part 1 4 b is aligned with the alignment adjustment applied by the protruding part 2 8 located in the corresponding area -74-581921 ( 70) Description of the invention The continuation of the tilting liquid crystal module 30 a has the same direction. When a stress is applied to the steady state liquid crystal display device 400, the radial tilt alignment of the liquid crystal layer 30 will collapse once, but after the stress is removed, the radial tilt alignment can be restored. This is because The relationship between the alignment adjustment force of the alignment adjustment structure and the protrusions 28 acting on the liquid crystal modules 30a. Therefore, the afterimage caused by the stress can be avoided.

Please note that the alignment adjustment force from the projection 28 need not be too strong, because it only needs to have the effect of stabilizing the radial inclined alignment formed by the alignment adjustment structure and fixing the position of its central axis. For example, for a unit solid part 14bf with a diameter between about 30 μηι and 50 μηι, as long as a protrusion 28 having a diameter of about 15 μτη and a height (thickness) of about 1 μη is formed, sufficient alignment adjustment force can be obtained. .

Although the material of the protruding portion 28 is not limited to any special material, it is relatively easy to form the protruding portion 28 by using an electromotive material (such as resin). Furthermore, a better system can use a resin material that can be deformed by heat. In this way, after the heat treatment after patterning, the protrusion 2 having a slightly convex cross-section as shown in FIG. 3 3 B can be formed very easily. 8. The projection 28 having a slightly convex cross section in a normal direction along the plane of the substrate has a vertex in the drawing, which can provide a desired effect of fixing the center position of the radial inclined alignment. Of course, the protruding portion may also have a top surface. Moreover, although the cross-section of the protruding portion 28 (along the substrate plane of the counter substrate 400b) shown in FIG. 3A is a generally circular shape, the cross-sectional shape of the protruding portion 28 is not limited to this. The protruding portion 28 may have a general rectangular cross-section or a general cross-shaped cross-section. In order to reduce the viewing angle dependence, the protrusion -75-581921 (71) Description of the Invention Continued Section 28 is preferably a cross-sectional shape having a high degree of rotational symmetry. Fig. 35 is a liquid crystal display device 400A including a protruding portion 28A having a general cross-shaped cross section. The structure of the liquid crystal display device 400A is substantially the same as that of the liquid crystal display device 400 shown in Figs. 3A and 3B, but the protruding portions 28A have a general cross-shaped cross section. Compared with the protrusions having a generally circular cross-section and having approximately the same area, among the protrusions 28 A having a general cross-section, an inclined surface that can be used to apply an alignment adjustment force to the liquid crystal modules 30 a The area is large, and the alignment adjustment force can be applied to a larger area in the liquid crystal domain. Therefore, a larger alignment adjustment force can be applied to the liquid crystal modules 30a more effectively. Therefore, the liquid crystal display device 4 OO A including the protruding portion 2 8 A having a general cross-shaped cross section has a more stable alignment, and has an improved response speed to an applied voltage. Of course, an arrangement with different cross-sectional shapes (along the plane of the substrate) on the counter substrate can also be adopted. For example, a protrusion having a large alignment adjustment force (for example, a protrusion 2 8 A having a general cross-shaped cross section as shown in FIG. 3) may be provided to improve an unnecessary electric field which is likely to occur, and Alignment adjustment forces in areas that negatively affect the display, such as near the busbar, while providing protrusions with different cross-sectional shapes in other areas. 36 and 37 are liquid crystal display devices 4008 and 400 (, respectively, which have protrusions having different cross-sectional shapes in the counter substrate 400b. The TFT substrate of the liquid crystal display device 400B in FIG. 36 includes the picture element The electrode 14 is a part of the unit solid part 14W (the shape is approximately -76- 581921 (72) Description of the invention continued on the half of the unit solid part 14b ') is located in the gate busbar 15 , Just like the liquid crystal display device 1 Ο Ο E shown in FIG. 2 A and FIG. 2 1 B. The reverse substrate of the liquid crystal display device 400B is corresponding to the portion of the gate bus line 15 Each region of the unit solid portion 14bf includes a protrusion 2 8B having a general T-shaped cross section, and each region of the unit solid portion 14b 'includes a protrusion having a general circular cross section. The direction in which the liquid crystal modules 3 0 a are inclined by the general T-shaped cross-section protrusion 2 8 B is aligned with the unit solid part 14N (the part corresponding to the gate bus line 15). A shape corresponding to approximately half of the solid portion 14b 'of the unit) Orientation direction of the radial oblique alignment of the liquid crystal domain. The general T-shaped cross-section protruding portion 28B provided corresponding to a part of the unit solid portion 14bf (its shape is equivalent to half of the unit solid portion 14K) can be effectively applied The reason for the large alignment adjustment force on these liquid crystal modules 30a is the same as that of the general cross-shaped protrusion 28A located in each area corresponding to the unit solid portion 14b1. Therefore, in In the liquid crystal display device 400B (the protruding portion 2 8 B having great alignment adjustment power is located in the gate bus line 15), the liquid crystal module located in the gate bus line 15 can be effectively adjusted 3 0 a (the alignment of which is likely to be disturbed). The TFT substrate of the liquid crystal display device 400C in FIG. 37 includes the picture element electrode 14, and a part of the unit solid portion 14 b ′ (its shape is approximately equivalent to One half of the unit physical part 14b ') is located in the gate busbar 15 and the source busbar 16, just like the liquid crystal display device -77- 581921 (73) shown in FIG. 2 3 Description of the invention The anti-substrate of the liquid crystal display device 400C includes a region having a general structure in each region of the unit solid portion Mb ′ corresponding to the portion of the gate busbar 15 and the source busbar 16. The protruding portion 28B of the T-shaped cross section includes a protruding portion 28 having a generally circular cross section in each region corresponding to the unit solid portion 14bf.

In the liquid crystal display device 400C (where the protruding portion 2 8 B having a great alignment adjustment force is located in the gate busbar 15 and the source busbar 16), the gate electrode can be effectively adjusted. The orientation of the liquid crystal module 30 a (the alignment of which is likely to be disturbed) in the bus line 15 and the source bus line 16. Arrangement of polarizing plate and phase plate

The so-called "vertical alignment type liquid crystal display device" (which includes a liquid crystal layer, and the liquid crystal modules with negative induced anisotropy in the liquid crystal layer will be vertically aligned when no voltage is applied) can be displayed in various ways. Mode to display images. For example, in addition to the birefringence mode (in this mode, the birefringence of the liquid crystal layer is controlled by an electric field in order to display an image), the vertical alignment type liquid crystal display device can also be used in optical rotation mode, or use In the combined display mode of optical rotation mode and birefringence mode. By providing a pair of polarizing plates on the outside of the pair of substrates (such as the TFT substrate and the counter substrate) (the side away from the liquid crystal layer 30) of any of the above-mentioned liquid crystal display devices, a birefringent mode can be obtained. Liquid crystal display device. Moreover, a phase difference compensator (generally a phase plate) can be provided when necessary. Furthermore, a high-brightness liquid crystal display device can be obtained by general circularly polarized light. -78-581921 (74) Description of the Invention Another alternative embodiment due to the slanting electric field generated near the edge of the gate bus bar, the display quality degradation not only occurs with the alignment adjustment structure (with the unit entity Electrode structure with holes and holes) to form a liquid crystal display device with a radially inclined liquid crystal domain; it also occurs in a vertically aligned liquid crystal layer that generally includes a vertical alignment when no voltage is applied and can be used in The liquid crystal display device has an electrode structure with openings to adjust its alignment. The present invention can improve the display quality in a liquid crystal display device that generally includes a vertical alignment type liquid crystal layer and can use an electrode structure having openings therein to adjust its alignment. The structure of a liquid crystal display device 500 according to another alternative embodiment of the present invention will now be described with reference to FIGS. 3A and 3B. Figure 3 8A is a plan view seen from the direction of the normal of the substrate, and Figure 3 8B is a sectional view taken along the line 3 8 B-3 8 B 'of Figure 3 A. The systems shown in Figs. 38A and 3B are states when a voltage is applied to the entire liquid crystal layer. The liquid crystal display device 500 includes an active matrix substrate (hereinafter referred to as a "TFT substrate") 500a, an inverted substrate (hereinafter referred to as a "color filter substrate") 500b, and a TFT substrate 500a and The liquid crystal layer 30 between the counter substrates 500b. The liquid crystal module 30 a of the liquid crystal layer 30 is negatively induced anisotropy. When a voltage is applied to the entire liquid crystal layer 30 without passing through the vertical alignment film (not shown in the figure, it acts as a vertical alignment layer). It will be arranged vertically to the surface of the vertical alignment film, which is located on each of the TFT substrates 500a and -79- 581921 (75) Description of the invention The continuation sheet is close to the anti-substrate 5 0 0 b of the liquid crystal layer 30 On one of the surfaces. The TFT substrate 500a of the liquid crystal display device 500 includes a transparent substrate (e.g., a glass substrate) 11 and an image element electrode 19 located on the surface of the transparent substrate Π. The counter substrate 500b includes a transparent substrate (e.g., a glass substrate) 21 and a counter electrode 22 located on the surface of the transparent substrate 21. The alignment of the liquid crystal layer 30 in each picture element region will be applied between the picture element electrode 19 and the counter electrode 2 2 (the two electrodes are arranged opposite each other through the liquid crystal layer 30). The voltage. A display can be manufactured by using the following phenomenon: the polarizing property or the amount of light passing through the liquid crystal layer 30 will change as the alignment of the liquid crystal layer 30 changes. The picture element electrode 19 of the T F T substrate 500a includes a plurality of openings 19a and a solid portion I9b. The openings 19a refer to the portion of the picture element electrode 19 made of a conductive film (such as the IT0 film) from which the conductive film has been removed, and the solid portion 14b refers to Is the part where the conductor film still exists (that is, the part other than the openings 19a). Although a plurality of openings 19 a are formed in each picture element electrode, the solid part 19 b is basically made of a single continuous conductive film. In this embodiment, each of the openings 19a has a slit shape (that is, a shape having a width substantially smaller than its length (the width refers to a dimension in a direction perpendicular to the length)). Each of these openings 19a will have one side extending in a direction that is 45 ° to the long and short sides of the picture element area (row and column directions in the matrix pattern arrangement). Furthermore, the direction in which the side extends in the upper half of the picture element area will differ from the direction in which it extends in the lower half of the picture element area by 90 °. • 80- 581921 (76) Description of the invention continued

When a voltage is applied between the picture element electrode 19 and the counter electrode 22, the edge portion of the opening 19a of the picture element electrode 19 (the surrounding portion of the opening 19a and the Inside, the liquid crystal layer 3 上方 above (including its boundary) generates an inclined electric field represented by the inclined portion of the equipotential line EQ. Therefore, the negatively induced anisotropic liquid crystal modules 30a (which are arranged vertically when no voltage is applied) are tilted to the tilt direction of the tilted electric field generated at the edge portion of the opening 19a in. Therefore, when a voltage is applied between the picture element electrode 19 and the counter electrode 22, an inclined electric field generated at an edge portion of each opening 19a of the picture element electrode 19 can be obtained. The alignment of the liquid crystal layer 30 is adjusted.

In the liquid crystal display device 5 0 0 ', the alignment of the liquid crystal display 30 is adjusted by the inclined electric field generated at the edge portion of the opening 19 a, so the liquid crystal module 3 0 a in the picture element region Will be aligned in four different azimuth directions, each position being an integer multiple of 90 ° with each other. In other words, in the liquid crystal display device 500, the picture element region has a multi-domain alignment. Therefore, the liquid crystal display device 500 has a desired viewing angle characteristic. In addition, the counter substrate 500b of the liquid crystal display device 500 includes a protruding portion 29 on one of its surfaces close to the liquid crystal layer 30. Each protruding portion 29 has an inclined side surface 2 9 s, and a zigzag pattern (or ">" pattern) appears when viewed from the normal direction of the substrate. The direction in which the inclined side surface 2 9 s extends will be consistent with the direction in which the side surface of the opening hole 19 a extends, and the protruding portion 2 9 is substantially located in the two opening holes 1 9a (the two opening holes 1 9 a In the width direction). The surface of the protrusion 2 9 has a vertical alignment power (generally forming a vertical -81-581921 (77) Description of the invention continued on a straight-line film (not shown) to cover the protrusion 2 9), and due to its anchor Due to the effect, the liquid crystal modules 3 0 a are substantially arranged to be perpendicular to the side surface 2 9 s. When a voltage is applied to the liquid crystal layer 30 in this state, the other liquid crystal modules 3 Oa near the protruding portion 29 are inclined so as to be anchored by the inclined side 2 9 s of the protruding portion 29. The liquid crystal modules 30 a formed in the inclined side surfaces 2 9 s have the same inclination orientation.

Because the orientation adjustment direction caused by the tilted electric field generated at the edge portion of the opening hole 19 a of the picture element electrode 19 is aligned with the alignment adjustment direction caused by the protruding portion 29, the protruding portion 29 can be further The ground stabilizes the alignment of the liquid crystal layer. When an applied voltage is present, t becomes a multi-domain alignment caused by the inclined electric field. 1 The TFT substrate 500a of the liquid crystal display device 500 includes a T FT (not shown) electrically connected to the picture element electrode 19 as a switching element; and a bus bar 18 including an electrical connection to the Gate bus line (scan line) 15 and source bus line (signal line) 16 of TFT.

In this specific embodiment, an opening 19a of the picture element electrode 19 will be formed so that it does not cross the edge of the gate busbar 15; and the edge of the gate busbar 15 However, it will be covered by the solid part 19b of the picture element electrode 19, as shown in FIG. 3A. Therefore, high-quality display can be realized. The reason will be described below with reference to FIGS. 38A, 38B, and 39. FIG. 39 is a schematic plan view of the liquid crystal display device 800, and a part of the gate bus bar 15 is not covered by the solid part 19b of the picture element electrode 19. An oblique electric field is generated near the edge of the bus bar 18, and whether or not the liquid crystal layer is between the picture element electrode 19 and the counter electrode 22 -82- 581921 (78) Description of the invention continued page 3 When a voltage is applied to 0, the inclined electric field is generated. Therefore, in a liquid crystal display device that performs display in a general black mode, when no voltage is applied, the LCD module 30a located near the edge of the bus bar 18 is adjusted by the tilted electric field. If the power is tilted, light leakage may occur and the contrast will be reduced. Specifically, because the gate bus line 15 is at a very high voltage (0FF voltage) most of the time to maintain the 0FF state of the TFT, the gate bus line 15 edge The degree of light leakage in the vicinity is very important. In the liquid crystal display device 800, the picture element electrode 19 includes an opening 19a. After the opening 19a is formed, it does not cross the edge of the gate bus bar 15, so the gate A part of the edge of the baffle line 15 is not covered by the solid part 19b of the picture element electrode 19, as shown in FIG. 39. Therefore, near the edge of the portion of the gate bus line 15 that is not covered by the solid portion i 9 b (that is, the area LL shown by the dotted line in FIG. 3), the liquid crystal modules 3 0 a will all It is tilted by an inclined electric field generated in the vicinity of the edge of the gate bus line 15 and light leakage occurs. In addition, due to the relationship of the inclined electric field generated near the edge of the bus bar 18, a residual charge may appear in the opening 19a (the opening of the insulating material is exposed), and if it is located on the bus bar If the liquid crystal module 3 0 a in the opening 19 a in 18 is tilted due to the influence of the residual charge, light leakage will result. Although the degree of the residual charge varies depending on the surface condition of the insulating material, the surface condition of the insulating material also changes when the alignment film is printed or the liquid crystal material is emitted. Therefore, in the liquid crystal display device, the residual charge in the display plane is changed. If the residual electricity -83-581921 (79) Description of the invention continues on the display plane, the charge will also change in the display plane, resulting in local changes in contrast. Specifically, as described above, since a very high voltage is applied to the gate busbar 15, the gate busbar 15 is particularly important for the influence of the uneven sentence phenomenon. In the liquid crystal display device 800, the picture element electrode 19 includes an opening 19a. After the opening 9a is formed, it does not cross the edge of the gate bus bar 15, so the gate A part of the edge of the pole busbar 5 is not covered by the solid part 19 b of the picture element electrode 19, as shown in FIG. 39. Therefore, there will be an area not covered by the conductive film (solid part 19 b) of the picture element electrode 19 in the vicinity of the edge of the gate bus line 15, so it will be caused by the residual charge in this area. Light leakage occurs, which causes uneven display. In contrast, in the liquid crystal display device 500 of this embodiment, an opening 19 a of the picture element electrode 19 is formed so that it does not cross the edge of the gate bus line 15; and the gate The edges of the pole busbars 15 will be covered by the solid part 19b of the picture element electrode 19. Therefore, the liquid crystal module 30a of the liquid crystal layer 30 is electrically shielded from the oblique electric field generated in the vicinity of the edge of the bus bar 18. Therefore, the liquid crystal module 30a of the liquid crystal layer 30 will not be tilted by the alignment adjustment force caused by the inclined electric field. Therefore, light leakage can be avoided, thereby preventing a decrease in contrast. Furthermore, in the liquid crystal display device 500, an edge of the gate busbar 15 will be covered by the solid part 19b of the picture element electrode, and an area near the edge of the gate busbar 15 will be covered. The area will be covered by the conductive film of the picture element electrode 19 (the solid part 19 b), so it is unlikely that residual charge will occur. Therefore, -84-581921 (80) Invention description Continuation page can avoid uneven hooks. phenomenon. As described above, in the liquid crystal display device 500, the light leakage caused by the inclined electric field generated near the gate bus line 15 can be avoided, so that the contrast can be reduced, and the gate due to the The non-uniformity caused by the residual charge near the pole busbars 15 can realize high-quality display.

Please note that although the specific embodiment has been described above with regard to the case where the edge of the gate bus line 15 will be covered by the solid portion 19b of the picture element electrode 19, as shown in FIG. 40, The liquid crystal display device 500a is arranged in such a manner that the edges of the source bus bar I6 are covered by the solid portion 19b of the picture element electrode 19. By covering the edges of at least one of the gate busbar 15 and the source busbar 16 with the solid portion 19b of the picture element electrode 19, the display quality can be improved. Because the inclined electric field generated near the edge of the gate bus line 15 usually affects the liquid crystal modules more than the influence of the inclined electric field generated near the edge of the source bus line 16 on the liquid crystal modules. Therefore, it is preferable that at least the edge of the gate bus bar 15 be covered by the solid portion 19b of the picture element electrode 19. Furthermore, in order to more reliably avoid the influence of the inclined electric field generated in the vicinity of the edges of the busbar 18, it is better to have the edges of the gate busbar 15 and the source busbar 1 The edges of 6 are covered by the solid part 19b of the picture element electrode 19, as shown in the liquid crystal display device 500b in FIG. 4i. Although the present invention has been described in terms of preferred embodiments, those skilled in the art will understand that the invention disclosed herein can be modified in various ways, and it can be assumed that in addition to what has been explicitly mentioned and described above -85-581921 (81) Description of the Invention Various specific embodiments other than the specific embodiments on the following pages. Therefore, this application is intended to cover all modifications that fall within the true spirit and scope of the invention with the scope of the accompanying patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A and FIG. 1B are schematic diagrams of a picture element region structure of a liquid crystal display device 100 according to a specific embodiment of the present invention. FIG. 1A is a plan view, and FIG. 1 B is a cross-sectional view taken along line 1 B-1 B% of FIG. 1A. FIG. 2A and FIG. 2B are schematic diagrams of the liquid crystal layer 30 of the liquid crystal display device 100 after the voltage is applied, and FIG. 2A is a schematic diagram of the state immediately after the orientation is changed (initial ON state). Figure 2B is a schematic diagram of the steady state. 3A to 3D are schematic diagrams showing the relationship between the power lines of various systems and the alignment of the liquid crystal module. 4A to 4C are schematic diagrams of the alignment of the liquid crystal modules in the liquid crystal display device 100 according to a specific embodiment of the present invention when each system is viewed from the normal direction of the substrate. 5A to 5C are schematic diagrams of exemplary radial tilt alignments of the liquid crystal module shown in Figs. 6A and 6B. The other shown in Figs. 6A and 6B is used in a liquid crystal display device according to a specific embodiment of the present invention. Schematic plan view of picture element electrode. 7A and 7B are schematic plan views of other picture element electrodes used in a liquid crystal display device according to a specific embodiment of the present invention. 8A and 8B are schematic plan views of other picture element electrodes used in a liquid crystal display device according to a specific embodiment of the present invention. FIG. 9 is a schematic plan view of another picture element electrode used in a liquid crystal display device according to an embodiment of the present invention. FIG. 10A and FIG. 10B are schematic plan views of still other picture element electrodes used in a liquid crystal display device according to a specific embodiment of the present invention. FIG. 11A is a schematic diagram of the unit lattice of the pattern in FIG. 1A, FIG. 1B is a schematic diagram of the unit lattice of the pattern in FIG. 9, and FIG. 1C is a pitch p The relationship between the area ratio and the solid part. FIG. 12 is a schematic plan view showing a structure of one picture element region of a liquid crystal display device 100 according to a specific embodiment of the present invention. FIG. 13 is a schematic plan view of one of the image element area structures of the liquid crystal display device 700, in which the openings in the busbar are not stacked on the busbar. FIG. 14A and FIG. 14B are schematic alignment diagrams of an LCD module located near an opening in a gate bus bar of the LCD device 700, and FIG. 14A is a plan view, and FIG. 1 4 B is a sectional view. Fig. 15 A is a cross-sectional view taken along line 15 A-1 5 A · in Fig. 13 and Fig. 5B is a cross-sectional view taken along line 15B-15B * in Fig. 13. FIG. 16A and FIG. 16B are schematic diagrams of alignment of a liquid crystal module near an opening in a gate bus bar of a liquid crystal display device 100 according to a specific embodiment of the present invention. 16 A is a plan view, and FIG. 16 B is a cross-sectional view. FIG. 17 is a schematic plan view illustrating a structure of one picture element region of a liquid crystal display device 100A according to a specific embodiment of the present invention. -87-581921 (83) Description of the invention continued Fig. 18 is a schematic plan view of one of the picture element area structures of a liquid crystal display device 100B according to a specific embodiment of the present invention. FIG. 19 is a schematic plan view of a structure of an image element region of a liquid crystal display device 100C according to a specific embodiment of the present invention. FIG. 20 is a schematic plan view of a structure of an image element region of a liquid crystal display device 100D according to a specific embodiment of the present invention. FIG. 2A is a schematic plan view of an image element region structure of a liquid crystal display device 100E according to a specific embodiment of the present invention, and FIG. 2B is an enlarged view of a portion near a gate bus line in FIG. 2A Illustration. FIG. 22A is a schematic plan view of a picture element region structure of a liquid crystal display device 100F according to a specific embodiment of the present invention, and FIG. 2B is an enlarged view of a portion near a gate bus bar in FIG. 2A. FIG. 23 is a schematic plan view of a structure of an image element region of a liquid crystal display device 100G according to a specific embodiment of the present invention. FIG. 24A is a schematic plan view of one of the picture element area structures of a liquid crystal display device 100H according to a specific embodiment of the present invention, and FIG. 2B is a portion near the gate busbar in FIG. 2A Zoom in. FIG. 2A is a schematic plan view of a structure of an image element region of a liquid crystal display device 1001 according to a specific embodiment of the present invention, and FIG. 2B is an enlarged view of a portion near a gate bus line in FIG. 2A Illustration. 2A and 2B are schematic plan views of one of the picture element area structures of a liquid crystal display device 2000 according to an alternative embodiment of the present invention, wherein FIG. 2A is a plan view, and FIG. 2 6B is a sectional view taken along line 26B-26B 'of FIG. 2A. -88-581921 (84) Description of the Invention Continued Figures 7A to 2D show the relationship between the alignment of the liquid crystal module 3 0 a and the surface structure with vertically arranged powers. FIG. 2A and FIG. 2B are schematic diagrams of the liquid crystal layer 30 of the liquid crystal display device 2000 in the presence of an applied voltage, and FIG. 2A is a schematic diagram of the state immediately after the alignment is changed (initial. N state), and Figure 2 8B is a schematic diagram of the steady state.

FIG. 2A to FIG. 2C are schematic cross-sectional views of liquid crystal display devices 200A, 200B, and 200C, which are alternative embodiments, respectively. Each embodiment has different positional relationships between the opening and the protruding portion. FIG. 30 is a schematic cross-sectional view of the 30A-30A% liquid crystal display device 200 along the line of FIG. 26A. 1 FIG. 3 1 A and FIG. 3 1 B are schematic diagrams of one image element region structure of a liquid crystal display device 200D according to an alternative embodiment of the present invention, where FIG. 3 A is a plan view and FIG. It is a cross-sectional view taken along line 31B-3 1B ′ of FIG. 3A.

32A to 32C are schematic cross-sectional views of one of the picture element regions of a liquid crystal display device 300 having two layers of electrodes, in which a state shown in FIG. 3A is a state where no voltage is applied, and a state shown in FIG. 3B is The state when the alignment is initially changed (initial ON state). 33A and 33B are schematic cross-sectional views of one picture element region of a liquid crystal display device 400 having a protruding portion on a counter substrate, wherein FIG. 33A is a plan view, and FIG. 33B is a line 33B-33B along the line 33A · Sectional view. Figures 3A to 3C are one of the image elements of the liquid crystal display device 400 -89-581921 (85) Description of the schematic cross-section of the continuation prime area, wherein the system shown in Figure 3 4A is not applied The state of the voltage is the state (initial ON state) when the system alignment is just changed as shown in FIG. 34B, and the state shown in FIG. 34C is the stable state. FIG. 35 is a schematic plan view of one of the picture element region structures of another liquid crystal display device 400A having a protrusion on the counter substrate. FIG. 36 is a schematic plan view of one of the picture element region structures of another liquid crystal display device 400B having a protrusion on the counter substrate. FIG. 37 is a schematic plan view showing a structure of one picture element region of another liquid crystal display device 400C having a protrusion on the counter substrate. 38A and 38B are schematic diagrams showing the structure of one picture element region of a liquid crystal display device 500 according to another alternative embodiment of the present invention, in which FIG. 38A is a plan view and FIG. 38B is a view along FIG. 38A. Line 38B-38] ^ cross-sectional view. FIG. 39 is a schematic plan view of the liquid crystal display device 800. A part of the edges of the gate bus lines is not covered by the solid part of the picture element area. FIG. 40 is a schematic plan view showing a structure of one picture element region of a liquid crystal display device 500a according to another alternative embodiment of the present invention. FIG. 41 is a schematic plan view of the structure of one picture element region of a liquid crystal display device 500b according to another alternative embodiment of the present invention. Explanation of Symbols in the Drawings 11, 2 1: Transparent insulating substrates 14, 14A, 14B, 14C, 14D, 14E, 14F: picture element electrodes 14G, 14H, 141: picture element electrodes 14a: openings-90- 581921 ( 86) Invention Description Continued

Mb: solid part (conductor film) 14N: unit solid part 1 9: picture element electrode 19a: opening 19b: solid part (conductor film) 22: counter electrode 30: liquid crystal layer 3 0a: liquid crystal module 40, 40A, 40B, 40C, 40D: protruding portion 40s: protruding surface 40t: top surface of the protruding portion 100A, 200a, 500a: TFT substrate (active matrix substrate) 100A, 400b, 500b: reverse substrate (color filter substrate ) 100, 100A, 100B, 100C, 100D: liquid crystal display device 100E, 100F, 1006, 100H, 1001: liquid crystal display device 200, 200A, 200B, 200C, 200D: liquid crystal display device 300, 400, 400A, 400B, 400C: Liquid crystal display device 500, 500a, 500b: liquid crystal display device

Claims (1)

581921 Patent application scope 1. A liquid crystal display device comprising a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of figures for display An image element region, wherein: the first substrate has an image element electrode on a side close to the liquid crystal layer for each of the plurality of image element regions; an electrical connection to the image element An electrode switching element; and a bus line including a gate bus line and a source bus line electrically connected to the switching element; the second substrate includes a liquid crystal layer placed on the figure through the liquid crystal layer; The counter electrode opposite to the image element I electrode; the image element electrode includes a plurality of openings and a solid portion including a plurality of unit solid portions; in each of the plurality of image element regions, the liquid crystal layer is When no voltage is applied between the picture element electrode and the counter electrode, a vertical arrangement is formed, and when a voltage is applied between the picture element electrode and the counter electrode, it will be caused by the image. The oblique electric field generated at the individual edge portions of the plurality of openings of the prime electrode, and in response to the plurality of openings and the plurality of liquid crystal domains formed in the solid portion, each of the plurality of liquid crystal domains presents A radial oblique alignment, and the alignment of each of the plurality of liquid crystal domains can be changed according to the applied voltage for display; and in each of the plurality of image element regions, the image element electrode At least one of the plurality of openings is located in the busbar and the 581921 patent application continuation page is located between the openings between two adjacent unit solid parts of the plurality of unit solid parts and the confluence The lines overlap. 2. The liquid crystal display device according to item 1 of the patent application, wherein the at least one opening that overlaps the busbar includes at least one opening in the gate busbar. 3. For a liquid crystal display device according to item 2 of the scope of patent application, the plurality of openings in the part of the picture element electrode in the gate bus line will overlap the bus line. 4. The liquid crystal display device according to item 2 of the patent application, wherein the at least one opening that overlaps with the busbar further includes an opening in the source busbar. 5. The liquid crystal display device of claim 3, wherein the at least one opening that overlaps the busbar further includes an opening in the source busbar. 6. A liquid crystal display device comprising a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of image element regions for display, wherein : The first substrate has a picture element electrode on a side close to the liquid crystal layer for use by each of the plurality of picture element regions; a switching element electrically connected to the picture element electrode; And a bus bar including a gate bus line and a source bus line electrically connected to the switching element; the second substrate includes a second electrode disposed on the opposite side of the picture element electrode through the liquid crystal layer; A counter electrode; 581921 patent application continuation page The picture element electrode includes a plurality of openings, and a solid part including a plurality of unit solid parts, each of the plurality of unit solid parts will be at least partially such a plurality of Surrounded by openings; the liquid crystal layer forms a vertical arrangement when no voltage is applied between the picture element electrode and the counter electrode; and in each of the plurality of picture element regions, the At least one of the plurality of openings, such as an element electrode, is located in the busbar and an opening between two adjacent unit solid sections of the plurality of unit solid sections overlaps the busbar . 7. The liquid crystal display device according to item 6 of the patent application, wherein the at least one opening that overlaps with the busbar includes at least one opening in the gate busbar. 8. For a liquid crystal display device according to item 7 of the scope of patent application, the plurality of openings in a portion of the picture element electrode in the gate busbar will overlap the busbar. 9. The liquid crystal display device according to item 7 of the patent application, wherein the at least one opening that overlaps the busbar further includes an opening in the source busbar. 10. The liquid crystal display device according to item 8 of the patent application, wherein the at least one opening that overlaps with the busbar further includes an opening in the source busbar. 11. A liquid crystal display device, comprising a first substrate, a second substrate, a liquid crystal layer between the first substrate and the second substrate, and a plurality of image element regions for display, wherein: 581921 Scope of patent application continued The first substrate has a picture element electrode on a side close to the liquid crystal layer for use by each of the plurality of picture element regions; an electrical connection to the picture element An electrode switching element; and a bus line including a gate bus line and a source bus line electrically connected to the switching element; the second substrate includes a liquid crystal layer placed on the figure through the liquid crystal layer; A counter electrode opposite to the image element electrode, the image element electrode includes a plurality of openings and a solid portion; in each of the plurality of image element regions, the liquid crystal layer will apply a voltage to the image element A vertical arrangement is formed between the electrode and the counter electrode, and when a voltage is applied between the picture element electrode and the counter electrode, it will be caused by the plurality of openings of the picture element electrode. Oblique electric fields generated at individual edge portions, in response to adjusting the alignment of the liquid crystal layer; and in each of the plurality of picture element regions, an edge of the gate bus line and a source bus line At least one of the edges will be covered by the solid part of the picture element electrode. 12. For the liquid crystal display device according to item 11 of the patent application scope, in each of the plurality of picture element areas, at least the edge of the gate bus bar will be covered by the solid part of the picture element electrode. 13. The liquid crystal display device according to item 11 of the patent application scope, wherein: the solid portion of the picture element electrode includes a plurality of unit solid portions; and in each of the plurality of picture element regions, the liquid crystal layer will The oblique electric field generated at the individual edge portions of the plurality of openings of the plurality of openings of the image element electrode of the 581921 patent application continuation page after applying a voltage between the image element electrode and the counter electrode is applied to the The plurality of openings and the plurality of liquid crystal domains are formed in the solid part. Each of the plurality of liquid crystal domains exhibits a radial inclined alignment, and the alignment of each of the plurality of liquid crystal domains can be based on the applied voltage. Instead, it is displayed. 14. The liquid crystal display device as claimed in claim 12, wherein: the solid portion of the picture element electrode includes a plurality of unit entities; and in each of the plurality of picture element regions, the liquid crystal layer will The oblique electric fields generated at the respective edge portions of the plurality of openings of the image element electrode in response to an applied voltage between the plurality of openings and the counter electrode and A plurality of liquid crystal domains are formed in the solid part, and each of the plurality of liquid crystal domains exhibits a radial inclined alignment, and the alignment of each of the plurality of liquid crystal domains can be changed according to an applied voltage, thereby performing display. 15. The liquid crystal display device according to item 13 of the application, wherein in each of the plurality of picture element regions, at least one of the plurality of openings of the picture element electrode is located on the busbar. The opening between the two adjacent unit solid parts in the plurality of unit solid parts will overlap the bus line. 16. For a liquid crystal display device according to item 13 of the application, wherein when a voltage is applied between the picture element electrode and the counter electrode, the liquid crystal layer can be located in the busbar by the inclined electric field. A part of the solid part constitutes a liquid crystal domain, and the liquid crystal domain exhibits a radial oblique alignment.