TWI230818B - Image display device - Google Patents

Abstract

The present invention provides an image display device capable of preventing pillar-shaped spacers in the image display device from being fitted into cavity structures during a temporary securing step and a position alignment step. Among the pillar-shaped spacers 3a to 31 formed on an opposed substrate 2, pillar-shaped spacers 3a to 3f are arranged in a pattern B shown by single-dashed lines and pillar-shaped spacers 3g to 31 are arranged in a pattern C shown by double-dashed lines. Pattern A shown by broken lines in Fig. 4 is the projection onto the opposed substrate 2 from the arrangement pattern of the cavity structure formed on an array substrate 1 that is adhered to the opposed substrate 2. Patterns B and C are the patterns formed by parallel displacements of the pattern A only with different distances from each other and/or in different directions. By arranging each of the pillar-shaped spacers on the patterns B and C with an amount more than 1 and less than 2/3 of the total amount, it is possible to reduce the percentage of the pillar-shaped spacers fitted into the cavity structures.

Description

1230818

V. Description of the invention (1) 1. [Technical field to which the invention belongs] The present invention relates to an image display device that uses a columnar spacer to specify a substrate interval, and particularly to a pre-fixing process and an alignment process, which can suppress the columnar space. Image display device with objects embedded in the hole structure. 2. [Prior art] In the prior art, it is known to arrange a liquid crystal layer between substrates disposed opposite to each other, and to control the alignment of liquid crystal molecules contained in the liquid crystal layer, to be used as an image display device for image display. Since the light transmittance of a liquid crystal material depends on the alignment state of the liquid crystal molecules, controlling the alignment of the liquid crystal molecules can control the transmittance of the liquid crystal ', which can be used for image display. Fig. 9 is a schematic cross-sectional view of a conventional liquid crystal display device. As shown in FIG. 9, a liquid crystal display device with a conventional structure includes an array substrate 101, an opposite substrate 102 arranged opposite to the array substrate 101, and a liquid crystal configured by sealing a liquid crystal material between the array substrate 101 and the opposite substrate 102. Layer 103, and the distance between the array substrate 101 and the opposing substrate 102 is defined by a columnar spacer 104 (see, for example, Patent Document 1). The array substrate 101 includes pixel electrodes 105 and the like corresponding to display pixels. The wiring structure has a structure capable of supplying a potential to the liquid crystal layer 103. The columnar spacers 104 are used to maintain the array substrate J M and the phase Agan. 7 The dry soil is extremely opposite to the substrate 10 2 to make the thickness of the liquid crystal layer 103 uniform. As mentioned above, the optical characteristics of the liquid crystal layer 1G3 are used to make the image problem. ___________ Device reasons "For shirt images, the thickness of the liquid crystal layer 103 must be uniform. The columnar spacers 1 Q 4 will be formed of Xianzhong ^ y υ4 based on materials such as antecedent resin. Specifically, they will be formed on the opposite substrate 102 by photolithography, for example. 1230818 V. Description of the invention (2) Surface on. The assembling process of the liquid crystal display device is to keep the array substrate i 〇1 and the opposing substrate 102 at a certain interval and attach them, and then seal the liquid crystal constituting the liquid crystal layer 103 between the array substrate 010 and the opposing substrate 102. material. Here, since the array substrate 101 and the opposite substrate 102 each have a wiring structure corresponding to a display pixel, etc., precise alignment is required during opening and closing. Therefore, in the actual assembly process, first, the array substrate 10 and the opposing substrate 102 face each other under pressure and pre-fixed, and then move the array substrate in the horizontal direction or the opposing substrate. Formally fixed. Patent Document 1 Japanese Patent Laid-Open Publication No. 2-223922 (Page 4, Figure 3) 3. [Summary of the Invention] However, the array substrate 101 and the opposite substrate 1 are pre-fixed in the alignment process during the alignment process. The presence of objects 104 can sometimes cause problems. Specifically, when the array substrate 101 or the opposing substrate is moved in the horizontal direction after the pre-fixation, the 'columnar spacer 1 104' prevents the movement of the array substrate 101 or the opposing substrate 102, and alignment accuracy is reduced. Problem. This problem is explained below. Fig. 10 is a schematic diagram of a state in which the columnar spacers 104 are embedded in the hole structure 109. As shown in Fig. 10, the array substrate 1 〇1 has a thin film transistor with a switching element function 107. And pixel electrode 105. A planarization layer is arranged between the thin film transistor 107 and the pixel electrode 105, and the pixel electrode 105 and the thin film transistor 107 are drilled on a part of the planarization layer 108. The hole structure 1 〇9 is electrically connected. Therefore, in order to reduce the generation of the pixel electrode 1 0 5 and the pixel electrode 1 0 5

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V. Description of the invention (3) The parasitic capacitance between the wiring structures such as the lower-layer silicon film transistor 107, and the planarization layer 108 thickness must be about 2 to 4 microns, so the depth of the hole structure Around 2 to 4 microns. Because the array substrate 101 has a hole structure 10, sometimes the columnar spacer 104 may be embedded in the hole structure 10 during the pre-fixing process and the alignment process. When the columnar spacer 10 of the hole structure 10 is moved in the horizontal direction when the array substrate 丨 0j or the opposite substrate 102 is moved, a force is applied in a direction that obstructs the substrate movement, which causes the alignment process. malfunction. Generally, to keep the thickness of the liquid crystal layer 103 uniform, columnar spacers! 〇 4 It is designed to avoid the hole structure on the surface of the substrates facing each other. However, during the pre-fixing process, the positional relationship between the array substrate 101 and the opposing substrate 1 2 is difficult to fit according to the design, and there will be a certain position slip, causing the columnar spacer 104 to be embedded in the hole structure 10 9. In addition, even if there is no embedded hole structure 1 0 9 of the columnar spacer 104 in the pre-fixing process, there will be a columnar shape when the array substrate 1 0 1 or the opposite substrate 1 102 is moved in the horizontal direction during the alignment process. The spacer structure of the spacer 104 is 109, and it is difficult to align it after embedding. In the conventional liquid crystal display device, the wiring structure of the pixel electrode 105 and the thin film transistor 107 is almost the same in each display pixel, and the position of the hole structure 109 in the display pixel is also approximately constant. Similarly, the columnar spacers 104 are also arranged on the inner surface of the opposing substrate 102, corresponding to the regular arrangement of display pixels. Therefore, once the columnar spacers 104 are in the positional relationship of the embeddable hole structure 10 in the pre-fixing process or the alignment process, almost all of the columnar spacers provided are embedded, which makes the alignment process much larger. There are sleepy though. The present invention has been made in view of the problems of the above-mentioned conventional technologies, and its object is to

1230818 V. Description of the invention (4) Provide an image display device that uses a 枉 -shaped spacer to define the substrate interval, and an image display device in which the embedded hole formation of the columnar spacer is suppressed during the pre-fixing process and the alignment process. In order to achieve the above purpose, the image display device related to item 1 of the scope of patent application is characterized in that: the first substrate has a plurality of hole structures on its inner surface, and the plurality of hole structures are arranged according to a specific layout pattern; A substrate is disposed opposite to the first substrate, and a liquid crystal layer is disposed between the first substrate and the second substrate, and a group of two or more columnar spacers are attached to the inner surface of the second substrate. The projected pattern of the structural configuration pattern is passed on the type 2 of different parallel movements, and the columnar spacers of 1 or more and less than 2/3 of the total number are arranged, and `` different parallel movements '' refers to different distances and / or directions. Parallel ^ The invention in item 丨 of the scope of the patent application, on the second substrate is a columnar shape with a projection pattern of an upper hole configuration pattern after different parallel movements, each having a configuration of 1 or more and 2/3 or less of the total Spacer, during the fabrication of i: 3 til a substrate is fixed and aligned at the same time, the structure of the embedded hole is suppressed at the same time: the ratio of the spacer is reduced, and the obstacle to the moving substrate during the alignment process = the second in the patent scope Related image display The upper j-hole structure is more than 1 micron deep. The median is more than 3/2 times the number of pore structures

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According to the invention in the third item of the patent scope of the application, the number of the columnar spacers arranged in the second is more than 3/2 times of the number of the above-mentioned hole structures. The plate is arranged with a pattern to arrange the columnar spacers, pre-fixed and aligned. At this time, the ratio of eating and drinking can be reduced to less than 2/3 of the total. In the image display device related to item 4 of the patent application scope of T and melon structure, the first substrate or the second substrate is located in a part of the area ± a light-shielding device that penetrates the invention, and the above-mentioned columnar spacers are more than 2 The light is grouped on the area corresponding to the light-shielding area. The image display device related to the fifth item of the application patent scope is 、, 、, and t. Each display pixel of the above array substrate is provided with: a switch element to invent the flattening layer on the element; and the pixel is electrically connected. A plain electrode is formed with the above-mentioned switching element, and the image field is connected with a positive electrode. 4 Part of the eleventh layer of the image display device related to the sixth item in the patent scope of Shenyan: the majority of the hole structure is set in the corresponding display pixel. Λ: related to the seventh item in the patent scope In the video, the above-mentioned array substrate includes the above-mentioned invention.

The electrodes supply potential. The above-mentioned array substrate is provided with a common electrode near the above-mentioned slice electrode of the invention through the above-mentioned switching element for the above-mentioned image J. The scope of the patent application No. 8 is related to the above-mentioned image. 1230818 V. Description of the invention ( 6) For the potential difference between the f 2 element electrode and the common electrode, an electric field parallel to the inner surface of the array substrate is applied to the upper and r sa layers.解 液 4. [Embodiment] The following describes the embodiment of the present invention with reference to the drawings. It must be pointed out that the drawings are only schematic and different from the real thing. Of course, like figure = moon dagger contains different dimensions and ratios. (Embodiment 1) First, an image display device according to Embodiment 1 will be described. The structure of the image display device according to this aspect 1 is to define the interval between the array substrate and the opposite substrate by using a large number of columnar spacers formed on the inner surface of the opposite substrate. Most hole structures exist according to a specific two-pattern pattern on the inner surface of the array substrate. Most columnar spacers formed on the opposing substrate are arranged to project different patterns of the hole structure on the surface of the opposing substrate. Move 2 above in parallel. The number of columnar spacers arranged on each pattern is adjusted to 1 or more and 2/3 or less of the total. The columnar spacers are arranged on the pattern of 2 or more. When the image display device according to the first embodiment is used for pre-fixing and alignment of the array substrate and the opposite substrate, the columnar structure of the simultaneous entry hole structure can be suppressed. The spacer ratio is below 2/3 of the total. The video display device according to the first embodiment will be described in detail below. ° As shown in FIG. 1, the image display device according to the first embodiment includes: an array substrate 1 ′, which has a specific wiring structure, and an opposite substrate 2, which are arranged facing the array substrate 1. The structure is such that the distance between the array substrate 1 and the opposing substrate 2 is defined by a columnar spacer 3. Formed on the array substrate 1 and the opposite substrate

Page 14 1230818

A liquid crystal layer 4 is arranged in the gap between the two, and a polarizing plate 5 and a polarizing plate 6 are arranged on the outer surface of the array substrate 1 and the outer surface of the opposing substrate 2 respectively. In addition, the interface between the array substrate 1 and the liquid crystal layer 4 and the interface between the opposing substrate 2 and the liquid crystal layer 4 are each provided with an alignment film 7 and an alignment film 8. The array substrate 1 includes a specific wiring structure on a substrate. FIG. 2 is a plan view of the structure of the array substrate 1. As shown in FIG. As shown in FIG. 2, the array substrate 1 includes a pixel electrode 9 and a common electrode 10 which is formed to cover the second part of the pixel electrical element. The thin-film electrical body 11 ′ has a switching element function as the pixel electrode 9. Scanning line 12 controls the driving of the thin film transistor 丨: two signal lines 13 ′ are provided through the thin film transistor u; In order to supply the potential of the signal line 丨 3 to the thin film transistor η, it is specifically connected to the + pixel ϋ 'pixel electrode 9 and the electrode 9 are connected through a hole structure with a contact hole function.- The third picture of the pixel is the second Figure is a cross-sectional view along the AA line. For example, the first body 11, the scanning line 12, and the signal line 13 and the image +, the diaphragm film is a solar-level layer 18. The planarization layer 18 is used to suppress the potential variation of the planarized structure. The potential / t㈣ of the pixel electrode 9 is about 4 microns. Therefore, to electrically connect the pixel shirt, the film thickness must be 1 to the structure 14 and the depth is about 1 to 4 microns. -Each display pixel is provided with a circuit structure on the array substrate 1. Therefore, ^ formed on the array substrate 丨 are arranged in a matrix arranged at regular intervals in a matrix pattern. K ', there are a plurality, and a brief description of FIG. 2 3, the circuit scanning line 12 supplies a specific electric power at a thin thickness. First, the gate electrode of M i 1 is a thin film.

1230818 V. Description of the invention (8) The state of the transistor 11 becomes 0N. Then, a specific potential is supplied to the signal line 13 in the ⑽ state: the electro-body 11 is written into the specific potential by the element electrode 9. On the other hand, the electricity is Japanese: the second layer / track layer is at the image position, that is, electricity is generated between the pixel electrode 9 and the common electrode, and the writing electrode 9 and the common electrode 1G are formed in the array. Because of the image: a large amount of electricity is generated in the parallel direction of the surface of the array substrate, and the liquid crystal layer arranged on the array substrate is generated with the intensity and intensity of the liquid crystal. 3 / Open columnar spacer 3 structure and configuration pattern. The columnar spacer is the inner surface of the j plate 2. Specifically, after the photosensitive resin is coated on the inner surface of the opposite J J2, patterns such as & photolithography are formed. Therefore, the columnar spacer 3 is different. Knowing the spherical spacer and adjusting the mask pattern used when the pattern is changed, almost any configuration pattern can be realized. The structure of the columnar spacer of the first embodiment is not limited to that described above. For example, anyone who can form a layout pattern on a substrate can be used as the columnar spacer of the first embodiment. Fig. 4 is a schematic view showing the arrangement pattern of the columnar spacers on the inner surface of the opposing substrate 2 and the opposing substrate 2. As shown in FIG. 4 ', each display image of the opposing substrate 2 includes an opening portion 19a to an opening portion 19r, and the remaining area is covered by the light shielding portion 20. The columnar spacers 3a to 31 on the inner surface of the opposing substrate 2 are formed as shown in FIG. The system shown in Figure 4, most dotted areas

1230818

The pattern A, which is the configuration pattern of the hole structure existing on the inner surface of the array substrate, is projected on the opposite substrate 2. In addition, the pattern B, which is not included in most single-point chain line regions, is moved in parallel. The projection pattern of the hole structure 14. The pattern c shown in most double-dot chain line areas is obtained by moving the pattern A in parallel only in a direction and / or different distance from the pattern B., First, the columnar spacer 3a to the columnar spacer 3 are formed on the light-shielding portion 20 so as to avoid the opening portion 19a to the opening portion i9r. Because they are arranged on the opening portion 19a to the opening portion 19r, they are aligned. During the process, the columnar spacers 3 to 3 can be prevented from disturbing the orientation of the alignment film 7 arranged on the array substrate i, and the display image quality is reduced. In the first embodiment, the columnar spacers 3a The columnar spacers 31 are arranged on the pattern in which the projection pattern of the arrangement pattern of each hole structure 14 is moved in parallel. Specifically, the columnar spacers 3a to 3f are arranged according to the pattern B. The columnar spacer 3g to the columnar spacer 3 丨 are based on the figure ^ with the image related to this embodiment 1 The display device is a columnar spacer 3 to a columnar spacer 31 formed on the inner surface of the two opposing substrates 2 as shown in FIG. 4. Because of the pattern, the pre-fixing process and the alignment process are performed. At the same time, the ratio of the columnar spacers 3 embedded in the hole structure 14 is reduced to less than 1/2, and the influence of the resistance caused by the columnar spacers 3 / kg is suppressed, and precise alignment is possible. Figures 5 and 6 are for Schematic diagram illustrating the positional relationship between the hole structure 14 on the column 1 and the spacer 3 formed on the opposite substrate 2 during the pre-fixing process and the alignment process. More specifically, FIG. 5 shows the hole structure U14 The overlapping pattern of the configuration pattern and the pattern b in FIG. 4

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The figure shows the overlapping shape of the arrangement pattern of the hole structure 14 and the pattern c of FIG. 4. First, the positional relationship between the array substrate 丨 and the orientation substrate 2 in the pre-fixing process and the alignment process will be described with reference to FIG. 5. In the state of FIG. 5, since the layout pattern of the pattern B in FIG. 4 coincides with the configuration pattern of the hole structure 14, the spacers 3 a to 3 f are simultaneously embedded in any one of the hole structure 4 a to the hole structure. The columnar spacers 3a to 3f are formed on the opposing substrate / inner surface, and each is formed on the pattern B in which the arrangement pattern of the hole structure 14 is shifted in parallel & Therefore, in the pre-fixing process and the alignment process, the alignment of the array substrate and the opposing substrate 2 has not yet been completed. The pattern β and the hole structure are arranged in the same pattern. At this time, it is formed in pattern B. All of the columnar spacers 3a to 3f above are embedded in the pore structure. On the other hand, as shown in FIG. 5, the columnar spacer 3 g to the columnar spacer 3 丨 do not fit any of the hole structure 14 a to the hole structure 14 r. As described above, the columnar spacer 3g to the columnar spacer 31 are formed on the pattern c to which the horizontal movement different from the pattern B is applied. Therefore, in the overlapping pattern of the pattern B and the hole structure 14, the columnar spacer 3g to the columnar spacer 3 are located outside the configuration pattern of the hole structure 14. Therefore, when the array substrate i and the opposing substrate 2 are in the positional relationship shown in Fig. 5, the number of three columnar spacers embedded in any one of the hole structure 14a to the hole structure Hr is half of the total number. Next, the case where the array substrate 1 and the opposing substrate 2 are in the positional relationship shown in Fig. 6 will be described. The state of FIG. 6 is that the columnar spacer 仏 to the columnar spacer 3 丨 embed any one of the pore structure 14a to the pore structure i4r, and the columnar spacer 仏 to the columnar spacer W are not embedded in the pore structure 14a to the hole Structure any of 14r. It is shown in FIG. 6 that the positions of the array substrate 1 and the opposing substrate 2 enable the hole structure. 4a

1230818 V. Description of the invention (11) The layout pattern of the hole structure 14r coincides with the pattern C. Therefore, the columnar spacer 3g to the columnar spacer 31 formed on the pattern C is embedded in the hole structure 14, and the columnar spacer 3a to the columnar spacer is formed on the pattern B different from the pattern C. The object 3 f is located outside the arrangement area of the hole structure 14 a to the hole structure 14 r. In the pre-fixing process and the alignment process, since the array substrate 1 and the opposing substrate 2 are almost in any positional relationship, they can also be in a positional relationship other than those shown in Figs. 5 and 6. In this positional relationship, all of the columnar spacers 3 a to 31 are located outside the pore structure 14, and any of the columnar spacers are not embedded in the pore structure 14. As already explained, the arrangement of the hole structure 14 on the array substrate 1 and the arrangement of the columnar spacers 3 on the opposite substrate 2 have been designed so that they will not overlap with each other when they are officially fixed, and the image display device after the official fixation The top of the columnar spacer 3 is not embedded in the hole structure 1 4. However, during the pre-fixed stage and alignment of the array substrate 1 and the opposite substrate 2, some columnar spacers 3 may be embedded in the hole structure 14 because they have not been positioned correctly. Therefore, the image display device according to this embodiment j is based on the premise that a part of the columnar spacer 3 is embedded in the hole structure 14 during the pre-fixing process and the alignment process, and the columnar spacer will be lost at the same time. When the ratio of 3 is reduced to a certain value or less, the value of the resistance caused by the columnar spacer 3 to enter the hole structure 14 during the alignment process can be reduced to a level that does not cause problems in practice. Specifically, the distribution of the formation positions of the columnar spacers 3 is specified so that the number of the columnar spacers 3 embedded in the hole structure 4 accounts for the total number of the columnar spacers 3 in the pre-fixing process and the alignment process. Below 2/3, more preferably 1/2 Z. The amount of scattered columnar spacers 3 is not for absolute values, but for

Page 19 1230818 V. Description of the invention (12) The ratio of the total is prescribed for the following reasons. During the pre-fixing process and the alignment process, pressure is applied in the approach direction of the array substrate 丨 and the opposite substrate 2, specifically, the end of the columnar spacer 3 and the surface of the array substrate 1 are brought into contact with each other. Therefore, the columnar spacer 3 embedded in the hole structure 14 is also under pressure, and the resistance generated during the alignment process is known to increase with the pressure. On the other hand, during the pre-fixing process and the alignment process, the pressure is applied approximately uniformly to the entire surface of the array substrate and the opposing substrate 2, and the pressure applied to each columnar spacer 3, that is, the total pressure divided by the columnar interval The value of the number of objects 3. Therefore, in the alignment process, the resistance caused by the columnar spacers 3 embedded in the hole structure 14 does not depend on the absolute value of the number of inserts, but increases with the ratio of the number of embedded spacers to the total number of columnar spacers 3. And get bigger. Based on this knowledge, the inventors have found that when the ratio of the number of the columnar spacers 3 embedded to the total number of the columnar spacers 3 is less than 2/3 at the same time, the m force can be reduced to practically no problem during the alignment process. Degree, and complete the structure that can get the ratio. When the columnar spacers 3 are formed in the arrangement of this embodiment 丨, the manufacturing process will be carried out! miscellaneous. As described above, the columnar spacer 3 is formed on the inner surface of the opposite substrate 2. After the film structure of the resin and the like is formed, the light lithography method is used to shape the γϊ configuration '1'. The light lithography light = pattern can be used carefully. Materials, processes, etc. can be as before. Therefore, the image display device according to the first embodiment has the advantage that it can be precisely aligned in manufacture. Small θ force load (change example) Next, the change of the image display device related to the embodiment i will be described. Page 20 1230818 V. Description of the invention (13) Example. Fig. 7 shows an image display device according to a modified example, which is an arrangement pattern of columnar spaces formed on the inner surface of the opposing substrate 2. The image display device according to the modification is as shown in FIG. 7. The columnar spacers 21a to 211 satisfy the conditions of the first embodiment, and are formed in pairs on the opposing substrate 2. The arrangement position of each pair may be arbitrary, and in this modification, a pair of columnar spacers is formed as a general columnar spacer arrangement as in the conventional technique. As can be seen from FIG. 7, in this modification, for the projection pattern of the layout pattern of the hole structure 14 in the dotted area, the columnar spacers 2 丨 a, 2 1 c,

2 1 e, 2 1 g, 2 11, 2 1 k belong to the pattern with specific parallel movement, and columnar spacers 21b, 21d, 21f, 21h, 21j, and 211 belong to the pattern with different parallel movement. The cross-sectional area of the columnar spacer in this modification is about half of the cross-sectional area of the conventional columnar spacer. That is, the structure of this modification example forms columnar spacers 21, and the arrangement pattern of the hole structure 14 is applied to a plurality of patterns that move in parallel to the projection pattern. Therefore, as in the embodiment 丨, the ratio of the columnar spacers of the 'embedded hole structure 14' in the pre-fixing process and the alignment process is suppressed, thereby avoiding problems in the alignment process.

Also, "this variation is based on the arrangement position of the columnar spacers in the conventional structure", and two columnar spacers having a half cross-sectional area are arranged. The distribution of the columnar spacers under the macro view can be regarded as approximately the same as the conventional image display device. Therefore, the completed image display device adopts a conventional columnar spacer arrangement optimized by using a weighted distribution between the substrates, and the completed image display device can have the same characteristics as before. The layout pattern of the columnar spacers must be taken into account after the image is completed.

Page 21 1230818 Five No, it depends on the characteristics. Therefore, when the columnar spacers are arranged so as to satisfy the conditions of the implementation = state \, the image display device after the completion of the conditions is a design of the optimal columnar spacer layout pattern, and sometimes the design is complicated. In this modification, the columnar spacer y having a cross-sectional area of half of the conventional arrangement is arranged in accordance with a known pattern, and does not increase the burden on the design. There is an image display device that can be implemented according to a configuration pattern that satisfies the conditions of Embodiment 1. Advantages. (Embodiment 2) Next, an image display device according to Embodiment 2 will be described. The image display device according to the second embodiment is formed such that the number of columnar spacers defining the interval between the array substrate and the opposing substrate is 3/2 times or more the number of hole structures on the array substrate. With this structure, in the pre-fixing process and the alignment process, the ratio of the total number of columnar spacers in the simultaneous post-hole structure to the total number is suppressed to less than 2/3. The basic structure and implementation form of the image display device related to this embodiment 2 1 is the same, only the arrangement of the columnar spacers is different from the image display device related to the first embodiment. Therefore, the arrangement pattern of the columnar spacers and the advantages of forming the arrangement pattern will be described below. Fig. 8 is a schematic diagram showing the arrangement pattern of columnar spacers in the image display device according to the second embodiment. In Fig. 8, the pattern of the dotted area is the same as that of Fig. 4 ', which is a projection pattern of the arrangement pattern of the hole structure on the array substrate. The image display device according to the second embodiment, as shown in Fig. 8, is formed with a columnar spacer 3 which is 3/2 times the number of display pixels. The material and method for forming the columnar spacers 22 are the same as those in the first embodiment. In the second embodiment, the arrangement pattern of the columnar spacers 22 as shown in FIG. 8 is not particularly controlled, and most of the columnar spacers are so-called randomly arranged. The following says

Page 22 1230818 V. Description of the invention (15) '' It is clear that in the image display device according to the second embodiment, the columnar spacers embedded in the hole structure do not hinder the alignment process. As described above, in the image display device according to the second embodiment, the columnar spacers 22 having a number of 3/2 times or more the hole structure 4 are formed on the inner surface of the opposing substrate 2. In the pre-fixing process and the alignment process, the maximum number of columnar spacers 22 embedded in the hole structure 14 at the same time depends on the number of the hole structure and the number of columnar spacers with no more than 14 holes.物 22 Embedded in the hole structure 14. Therefore, if more columnar spacers 22 are formed than the hole structure 14 in the second embodiment, it is impossible for all the columnar spacers 22 to be embedded in the hole structure 14, even if all the hole structures 14 have columnar spacers 22. At the time of embedding, a certain number of columnar spacers 2 2 were not embedded in the hole structure 1 4. Especially in the second embodiment, since the columnar spacer 22 is formed to be 3/2 times or more of the number of the hole structures 14, even when, for example, all the hole structures 14 are embedded by the columnar spacers 22, the columnar spacers are embedded. The ratio of the spacer 22 to the total number is also less than 2/3. Therefore, in fact, the columnar spacer 22 can be used for the alignment process, but it can be precisely aligned. From the viewpoint of f, it is considered. In the image display device related to this embodiment 2, the columnar spacer 22 is used. By adjusting the number, it can be explained that the columnar spacers 22 and 2 automatically satisfy the conditions in the first embodiment. That is, it can be explained that in the second embodiment, the arbitrary arrangement of the columnar spacers 22 can also become the majority of the patterns of the projection pattern arranged on the arrangement pattern of the hole structure 14 by parallel movement. It will be described below that the arrangement of the columnar spacers 22 in the second embodiment satisfies the implementation. The extreme example assumes that in the columnar spacers 22, only the hole structure j 4

1230818 V. Description of the invention (16) " '^ The number is arranged in the hole structure. The projection pattern of 4 is only on the first pattern that is flat and moved by a certain distance, and the remaining columnar spacers 22 are arranged in On a second pattern that moves in parallel at different distances 2 and / or directions. In the second embodiment, since the number of the branch spacers 22 is 3/2 times or more of the number 14 of the hole structure, the columnar spacers 2 arranged on the first pattern 2 (the number of the hole structure 1 4) are in Less than 2/3 of the total. Therefore, the columnar spacers 22 arranged on the first pattern satisfy the conditions of the first embodiment. Therefore, the number of the columnar spacers 22 arranged on the second pattern is less than 1/3 of the total number because they are arranged on the other than the first pattern. Therefore, the columnar spacer 2 2 'disposed on the second pattern also satisfies the conditions of the first embodiment. The arrangement of the columnar spacers 22 is actually not in the same order as above, but the columnar spacers 22 are arranged randomly. Therefore, in fact, the columnar spacers 2 and 2 are arranged on most patterns, and the ratio of the columnar spacers embedded in the hole structure 14 is lower than the above example, and the resistance value generated during the alignment process is also smaller. The contents of the present invention have been described above with reference to the first embodiment and the second embodiment. However, the present invention is not limited to the above-mentioned contents, and various related industries should be able to come up with various embodiments and modifications. For example, in the first and second embodiments, the columnar spacers are formed on the inner surface of the opposing substrate 2, but they may be formed on the array substrate 1. Since there can also be a hole structure on the inner surface of the opposing substrate 2, the ratio of the columnar spacers embedded in the hole structure can be suppressed, so that the embedded columnar spacers can be prevented from causing obstacles in the alignment process and can be precisely aligned. Also, in Embodiment 1 and Embodiment 2, the hole structure is exemplified by a function having a through hole for electrically connecting the pixel electrode 9 and the thin-film transistor 11. However, this is at most an example, and other holes may be considered for use. Configuration diagram

Page 24 1230818 V. Description of the invention (17). For example, when forming an MVA liquid crystal display device, in order to control the tilt angle of liquid crystal molecules, a concave-convex structure may be provided on the inner surface of the array substrate or the inner surface of the opposite substrate. In order to prevent the columnar spacer from being embedded in the unevenness, the present invention can be adopted. Also, Embodiment Mode 2 and Embodiment Mode 2 are described in the case where there is no hole structure for each display pixel rule, but the scope of application of the present invention is not limited to this, and may also have randomly arranged hole structures. When the hole structure is set in any pattern, the layout pattern of the hole structure is grasped, and the projected pattern is moved in parallel to form a majority pattern, and a columnar spacer of a specific ratio is arranged on the pattern to obtain the result. Advantages of the invention. The number of the projected patterns of the hole structure 14 layout pattern after parallel movement is 2 in the implementation form 1, but if it is 2 or more, the columnar spacer 3 can be arranged on the arbitrary number of patterns. . The number of the three columnar spacers formed on each pattern is 1 or more 'and may be any number that is less than 2/3 of the total number of the columnar spacers 3. For example, a pattern equal to the number of columnar spacers 3 may be prepared, and one columnar spacer 3 may be arranged on each pattern. In this structure, during the pre-fixing process and the alignment process, because only a single columnar spacer is embedded in the hole structure at the same time, the resistance generated during the alignment process is negligible. The total number of the columnar spacers 3 formed on the inner surface of the opposing substrate 2 is not necessarily limited in the present invention. The number of the columnar spacers 3 depends on the material forming the columnar spacers 3, the cross-sectional area and height of the columnar spacers 3, and the pressure applied during the formal fixing. When using currently used materials, the total number of columnar spacers 3 generally ranges from about 1/3 to 1/7 of the number of display pixels, and other total numbers can also be used when the present invention is used. The present invention is also applicable to, for example, arranging a pixel electrode and a common electrode

Page 25 1230818

Description of the invention (18) The same as the substrate ', an electric field in a direction perpendicular to the substrate is applied to the liquid crystal layer. In addition to the so-called In-Piane-Switching image display device, the present invention is also applicable to all image display devices in which a columnar spacer is formed on one substrate and another substrate has a specific layout pattern. As explained above, according to the present invention, on the second substrate, the projection patterns of the hole structure arrangement pattern are arranged on the pattern with different parallel movements, each of which is more than two thirds of the columnar spacer, and During the pre-fixing process and the alignment process of the first substrate and the second substrate, the ratio of the columnar spacers simultaneously embedded in the hole structure can be reduced, and the effect of hindering the movement of the substrate during the alignment process can be suppressed. 'Furthermore, according to the present invention, the number of the columnar spacers arranged on the second substrate is more than 3/2 times the number of the hole structure. The columnar spacers are arranged in an arbitrary layout pattern, and the pre-fixing process and the alignment are performed. In the process, the effect of suppressing the embedding ratio to less than 2/3 of the total can be achieved. Into

Page 26 1230818 Brief description of the drawings Five drawings [Simplified description of the drawings] Fig. 1 shows the overall structure of the image display device related to the first embodiment. Fig. 2 is a plan view illustrating the wiring structure on the array substrate. Figure 3 is a cross-sectional view taken along line A ~ A of Figure 2. Fig. 4 is a plan view showing the arrangement pattern of the columnar spacers formed on the inner surface of the opposing substrate. Fig. 5 is a schematic diagram showing an example of the positional relationship between the array substrate and the opposing substrate during the pre-fixing process and the alignment process. Fig. 6 is a schematic diagram of another example of the positional relationship between the array substrate and the opposing substrate during the pre-fixing process and the alignment process. Fig. 7 is a plan view illustrating an arrangement pattern of columnar spacers on an opposing substrate in an image display device according to a modification of the first embodiment. Fig. 8 is a plan view showing an arrangement pattern of columnar spacers facing the substrate in the image display device according to the second embodiment. Fig. 9 is a sectional view showing a structure of an image display device related to a conventional technology. FIG. 10 is a schematic diagram of a state in which a columnar spacer is embedded in a hole structure in a pre-fixing process or an alignment process of an image display device related to the conventional technology. Description of component symbols: 1. 1 01 Array substrate 2, 1 0 2 opposite substrates 3a to 31, 21a to 211, 22, 104 columnar spacers

Page 27 1230818 Brief description of the drawings 4, 1 0 3 Liquid crystal layer 5, 6 Polarizer 7, 8 Orientation film 9, 10 Pixel electrode 1 0 Common electrode 11, 1 7 Thin film transistor 1 2 Scan line 1 3 Signal lines 14, 14a to 14r, 109 Hole structure 15 Conductive layer 16 Substrate 1 7 Insulating layer 1 8, 1 0 8 Flattening layer 19a to 19r Opening portion 2 0 Light shielding portion page 28

Claims (1)

i- ·: JIM 921341 nn VI. Patent application scope 1 · An image display device comprising: a first substrate with a plurality of hole structures on its inner surface, the majority of hole structures being configured according to a specific configuration pattern; the second A substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and a group of 2 or more columnar spacers attached to an inner surface of the second substrate-at the above-mentioned number The projection pattern of the layout pattern of the hole structure is made by different: :: moving patterns are formed by columnar spacers with more than 1 and less than 2/3 of the total. 2 make two: the image display device of the first item in the scope ′ wherein the above-mentioned pore structure W applies to the image display device of the first or the second item of the patent scope, in which the number of the above 4 related products is 3/2 times or more. The image display of item-item 2 or item ^ ^ is a light-shielding device, and the product area is further provided with the above 2 or more columnar spacers in the light area to suppress the penetration of light. The group is formed on the first substrate corresponding to the above-mentioned cover 5. As described in item 1 or 2 of the scope of the patent application, each display pixel is provided with: ~ image ", and the device is not included, wherein the above-mentioned switching element, And a flattening layer, the pixel electrode formed on the switching element is arranged on the flattening layer, and the hole structure is based on electrically connecting the ^ 冢 冢 素素 electrode and the above-mentioned switching element, page 29, 1230818, amendment, patent application The purpose is to display the image fields one by one. '、 / 成 In the partial area of the above-mentioned flattening layer 6. If the scope of the patent application is 1 or 2 Jg Xidan / Μ Most of the pore structure is set in each: shell: _ image display The device "its, the above is set. The genus is" the shoulders are not substantially the same in the pixel. "If the patent application scope is 1 or 2, the first substrate is more equipped with: a shirt-like display device, in which the above-mentioned lines are known. In order to control the above-mentioned switch signal line, it passes through the above open :: = dynamic state, and bit. Related parts supply power to the above pixel electrode. 8. If the image display item No. 1 or 2 of the patent application scope shows that the first substrate is further provided with this and the vicinity of the above pixel electrode, the potential difference between the above pixel electrode and the above common electrode. With the through electrode, an electric field is applied to the liquid crystal in a direction parallel to the inner surface of the substrate along the array.