JP3193033U - Liquid crystal display panel and liquid crystal display device including the liquid crystal display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display panel capable of improving a display effect and a liquid crystal display device including the liquid crystal display panel. A liquid crystal display panel includes a first substrate 11 in which a pixel electrode region Px and a non-pixel electrode region Px'are arranged, a second substrate arranged to face the first substrate, a pixel electrode region, and a non-pixel electrode region. It includes a first alignment layer 16 provided on the pixel electrode region and a liquid crystal layer provided between the first substrate and the second substrate. The first oriented layer on the pixel electrode region has a first thickness T1, the first oriented layer on the non-pixel electrode region has a second thickness T2, and the first thickness is larger than the second thickness. big. [Selection diagram] FIG. 3A

Description

  The present invention relates to a liquid crystal display panel and a liquid crystal display device including the liquid crystal display panel, and more particularly to a liquid crystal display panel having an alignment layer having a new structure and a liquid crystal display device including the liquid crystal display panel.

  As display technology advances, all devices are becoming smaller, thinner, and lighter, and the current mainstream display devices have been developed from conventional cathode ray tubes to liquid crystal display devices. In particular, liquid crystal display devices include display devices such as mobile phones, notebook computers, video cameras, cameras, music players, mobile navigation devices, and televisions used in daily life, and can be applied to a wide range of fields. it can. A liquid crystal display panel is often used as the display panel of the above apparatus.

  The luminance, contrast, color, and viewing angle of the liquid crystal display panel are the major factors that determine the display effect of the liquid crystal display device. With the development of liquid crystal display devices, currently mainstream or under development panels are twisted nematic type (TN), vertical alignment type (VA), and planar alignment type (IPS).

  The vertical alignment type liquid crystal display panel needs an alignment layer for aligning the injected liquid crystal molecules in order to achieve the effect of adjusting the brightness. However, there is a pattern on the thin film transistor (TFT) and color filter (CF) substrates, and a general alignment layer is applied with a uniform thickness. There arises a problem that the polymer collects, which affects the alignment of the liquid crystal.

  Therefore, there is a demand for a liquid crystal display panel that can improve the rubbing abnormality or the problem of monomer collection. It is expected that the liquid crystal alignment abnormality can be improved and the display effect of the liquid crystal display panel is improved.

  The main object of the present invention is to provide a liquid crystal display panel capable of improving the problem of liquid crystal alignment anomaly and further improving the display effect of the liquid crystal display panel and device, and a liquid crystal display device including the liquid crystal display panel It is to be.

  In order to achieve the above object, a liquid crystal display panel according to an embodiment of the present invention includes a first substrate on which a pixel electrode region and a non-pixel electrode region are disposed, and a second substrate disposed to face the first substrate. A substrate, a first alignment layer disposed on the pixel electrode region and the non-pixel electrode region, and a liquid crystal layer provided between the first substrate and the second substrate; The first alignment layer has a first thickness, the first alignment layer on the non-pixel electrode region has a second thickness, and the first thickness is greater than the second thickness.

  In one embodiment of the present invention, the pixel electrode region includes a pixel electrode, the non-pixel electrode region includes a data line and a scan line, the first alignment layer on the pixel electrode has a first thickness, and The first alignment layer on the data line or the scan line has a second thickness.

  In one embodiment of the present invention, the first alignment layer includes a plurality of particles.

  In one embodiment of the present invention, the first substrate includes a display region and a non-display region, and the size of at least one particle provided in the non-display region is the size of at least one particle provided in the display region. Bigger than that.

  In one embodiment of the present invention, the first substrate includes a display region and a non-display region, and the first alignment layer on the non-display region corresponding to the first substrate has at least one protrusion structure, at least one protrusion structure. A ridge or a combination thereof is further provided.

  In one embodiment of the present invention, the material of the first alignment layer is the same as the material of the protruding structure or the raised portion.

  In one embodiment of the present invention, the protruding structure or raised portion and the first alignment layer are integrally formed.

  In one embodiment of the present invention, the ratio between the height of the protrusion structure and the thickness of the first alignment layer adjacent to the protrusion structure is 2-10.

  In one embodiment of the present invention, the edge of the first alignment layer has at least one curved structure.

  In one embodiment of the present invention, the liquid crystal display panel further includes a sealant that is located between the first substrate and the second substrate and partially covers the first alignment layer.

  In one embodiment of the present invention, the liquid crystal display panel further includes a sealant that is located between the first substrate and the second substrate and partially covers at least one protruding structure, at least one raised portion, or a combination thereof. Including.

  In one embodiment of the present invention, the ratio of the first thickness to the second thickness is 1-10.

  In one embodiment of the present invention, the liquid crystal display panel further includes a color filter unit provided on the first substrate and positioned between the first substrate and the first alignment layer.

  In one embodiment of the present invention, the liquid crystal display panel further includes at least one spacer, a black matrix, and a second alignment layer, wherein the black matrix is provided on the second substrate, and the spacer is formed on the black matrix. Correspondingly, the second alignment layer is provided between the first substrate and the second substrate, the second alignment layer is provided on the second substrate, the black matrix, and the spacer, and the second alignment layer on the spacer has a third thickness. And the second alignment layer on the black matrix has a fourth thickness, and the third thickness is smaller than the fourth thickness.

  In one embodiment of the present invention, a thin film transistor element and a first protective layer are further provided on the first substrate, and the thin film transistor element includes a gate, an insulating layer, a semiconductor layer, a source, and a drain. The insulating layer covers the gate, the semiconductor layer is provided on the insulating layer, the source and the drain are provided on the semiconductor layer, and the source and the drain are arranged at a predetermined distance so that a channel region is formed. The first protective layer covers the thin film transistor element and has an opening so that the drain is exposed, and the pixel electrode is provided on the first protective layer and is electrically connected to the drain. The first alignment layer in the opening has a fifth thickness, and the fifth thickness is greater than the first thickness.

  A liquid crystal display panel according to another embodiment of the present invention includes a first substrate on which a pixel electrode region and a non-pixel electrode region are disposed, a second substrate disposed to face the first substrate, an opening region, and a non-contact region. A first alignment layer disposed on the pixel electrode region including the opening region and the non-pixel electrode region, and a liquid crystal layer provided between the first substrate and the second substrate. The first alignment layer on the opening region has a first thickness, the first alignment layer on the non-pixel electrode region has a second thickness, and the first thickness is greater than the second thickness.

  In another embodiment of the present invention, the opening region of the pixel electrode region includes a pixel electrode, the non-pixel electrode region includes a data line and a scanning line, and the first alignment layer on the pixel electrode has a first thickness. And the first alignment layer on the data line or the scan line has a second thickness.

  A liquid crystal display panel according to another embodiment of the present invention includes a first substrate having a first surface, a second substrate disposed opposite to the first substrate, and between the first substrate and the second substrate. A liquid crystal layer provided; a first alignment layer provided on the first substrate and having a second surface facing the first substrate; and a third surface adjacent to the liquid crystal layer; the first substrate and the second substrate; At least one spacer provided between the first substrate, the first substrate includes a first region, a second region, and a third region, and the spacer corresponds to the first region, and the second region The distance between the second surface of the first alignment layer on the first surface and the first surface of the first substrate is between the second surface of the first alignment layer on the third region and the first surface of the first substrate. The first alignment layer on the second region and the third region is smaller than the distance and has a first thickness and a second thickness, respectively, and the first thickness is the second thickness. Ri is also large.

  In another embodiment of the present invention, a pixel electrode is disposed on the second region of the first substrate, and a data line and a scanning line are disposed on the third region of the first substrate. The first alignment layer has a first thickness, and the first alignment layer above the data line or the scan line has a second thickness.

  In addition to the liquid crystal display panel, the present invention further provides a liquid crystal display device including a backlight module and the liquid crystal display panel provided on the backlight module.

1 is a schematic view showing a liquid crystal display panel according to a preferred embodiment of the present invention. FIG. 3 is a partial schematic diagram illustrating an upper structure of a first substrate of a liquid crystal display panel according to a preferred embodiment of the present invention. 1 is a schematic cross-sectional view showing a first substrate of a liquid crystal display panel and an upper structure thereof according to a preferred embodiment of the present invention. 1 is a schematic cross-sectional view showing a first substrate of a liquid crystal display panel and an upper structure thereof according to a preferred embodiment of the present invention. 1 is a schematic cross-sectional view showing a first substrate of a liquid crystal display panel and an upper structure thereof according to a preferred embodiment of the present invention. 1 is a schematic cross-sectional view showing a second substrate of a liquid crystal display panel and an upper structure thereof according to a preferred embodiment of the present invention. It is the schematic which shows the case where the 1st orientation layer of the liquid crystal display panel which concerns on preferable embodiment of this invention is provided on a 1st board | substrate. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. FIG. 3 is a schematic cross-sectional view illustrating a case where a first alignment layer of a liquid crystal display panel according to a preferred embodiment of the present invention is provided in a non-display area. It is the schematic which shows between the 1st orientation layer and the sealing compound of the liquid crystal display panel which concerns on preferable embodiment of this invention. It is the schematic which shows between the 1st orientation layer and the sealing compound of the liquid crystal display panel which concerns on other preferable embodiment of this invention. It is the schematic which shows the 1st orientation layer of the liquid crystal display panel which concerns on other preferable embodiment of this invention. It is the partial schematic which shows the case where the 1st orientation layer of the liquid crystal display panel which concerns on other preferable embodiment of this invention is provided on a 1st board | substrate. It is the schematic which shows the liquid crystal display device which concerns on this invention.

  Hereinafter, in order to make it easier to understand the advantages and effects of the present invention, specific examples will be illustrated and embodiments of the present invention will be described. The present invention can be implemented and applied by other specific embodiments. All variations and modifications made by those skilled in the art based on the present invention shall be included in the claims of the present invention.

  FIG. 1 is a schematic view showing a liquid crystal display panel according to a preferred embodiment of the present invention. The liquid crystal display panel of the present embodiment is a color filter on array (COA), and includes a first substrate 11, a second substrate 21, a plurality of spacers 3, a liquid crystal layer 4, And a sealant 5. The first substrate 11 and the second substrate 21 are arranged to face each other, the spacer 3 and the liquid crystal layer 4 are provided between the first substrate 11 and the second substrate 21, and the first substrate is formed by the sealant 5. 11 and the second substrate 21 are combined to face each other. When the first substrate 11 and the second substrate 21 are combined to face each other, the spacer 3 provided between the first substrate 11 and the second substrate 21 is interposed between the first substrate 11 and the second substrate 21. A predetermined space is formed, and the next liquid crystal molecule is easily injected. Here, in FIG. 1, each element configuration on the first substrate 11 and the second substrate 21 is omitted. Hereinafter, the first substrate 11 and the second substrate 21 according to the present invention, the device structure thereabove, and the manufacturing method thereof will be described in detail.

  FIG. 2 is a partial schematic view showing an upper structure of a first substrate which is a thin film transistor substrate of a liquid crystal display panel according to a preferred embodiment of the present invention. The thin film transistor substrate of the present embodiment includes a first substrate (not shown), a scanning line 12, a data line 13, a thin film transistor unit 14, a pixel electrode 15, and a storage electrode 17 disposed thereabove. Here, a pixel unit is defined by two adjacent scanning lines 12 and two adjacent data lines 13. The pixel unit includes a thin film transistor unit 14, a pixel electrode 15, and a storage electrode 17, and the pixel electrode 15 is provided between two adjacent scanning lines 12 and two adjacent data lines 13. Here, the material of the scanning line 12, the data line 13, and the storage electrode 17 is, for example, a conductive material generally used in this technical field such as metal, alloy, metal oxide, metal oxynitride, or the like. The electrode material generally used in this technical field may be used. Metal materials are preferred.

  FIG. 3A is a schematic cross-sectional view of the first substrate of the liquid crystal display panel according to the present embodiment and the upper structure thereof cut along the line A-A ′ of FIG. 2. The thin film transistor substrate of this embodiment includes a first substrate 11, a data line 13, a scanning line (not shown), and a thin film transistor unit 14. The first substrate 11 includes a data line 13, a scanning line ( And a thin film transistor unit 14 are provided. The thin film transistor unit 14 includes a gate 141 provided on the first substrate 11, an insulating layer 142 (also referred to as a gate insulating layer) covering the gate 141 and the first substrate 11, and a semiconductor layer 143 provided on the insulating layer 142. A source 1441 and a drain 1442 provided over the semiconductor layer 143, and the source 1441 and the drain 1442 are arranged at a predetermined distance so that a channel region 1443 is formed. Here, the insulating layer 142 also covers the data line 13 and the scanning line (not shown) at the same time. In the present embodiment, the thin film transistor unit 14 may be manufactured by adopting a conventional method of manufacturing a thin film transistor, and thus description thereof is omitted here. Moreover, the board | substrate generally used in this technical field, such as a glass substrate, a plastic substrate, a silicon substrate, a ceramic substrate, is used for the 1st board | substrate 11, for example. Note that the material of the gate 141 is, for example, a conductive material generally used in this technical field, such as a metal, an alloy, a metal oxide, or a metal oxynitride, or is generally used in other technical fields. The electrode material may be used. A metal material is preferred, but not limited thereto. As the material of the insulating layer 142, for example, a gate insulating layer material generally used in this technical field such as silicon nitride may be adopted. For the semiconductor layer 143, a material of a semiconductor layer generally used in this technical field may be employed, and examples thereof include amorphous silicon, polysilicon, P13, DH4T, and pentacene organic materials. However, the present invention is not limited to this.

  After forming the data line 13, the scanning line (not shown), and the thin film transistor unit 14, a first protective layer 145 that covers the data line 13, the scanning line (not shown) and the thin film transistor unit 14 is further formed as shown in FIG. 3A. Form. Further, color filter units 221 and 222 covering the first protective layer 145 are formed. Adjacent color filter units 221 and 222 are formed of different color resists. Thereafter, a second protective layer 146 that covers the color filter units 221 and 222 is further formed. Next, connection openings 147 are formed in the color filter units 221 and 222, the first protective layer 145, and the second protective layer 146 so that the drain 1442 is exposed. Then, the pixel electrode 15 provided on the second protective layer 146 and extending toward the connection opening 147 so as to be electrically connected to the drain 1442 is formed. Here, the material of the first protective layer 145 and the second protective layer 146 may be a material of a passivation layer such as a silicon oxide generally used in this technical field. The pixel electrode 15 may be a patterned electrode layer generally used in this technical field, such as a US-shaped electrode or a sawtooth electrode. The material of the pixel electrode 15 may be a transparent conductive material generally used in the technical field of the present invention, such as a transparent electrode material of a metal oxide such as ITO or IZO.

  Finally, as shown in FIG. 3A, an alignment monomer was further applied and solidified on the second protective layer 146 and the pixel electrode 15, and then the first alignment layer 16 was formed. In the present embodiment, the first alignment layer 16 does not have a uniform thickness by adjusting the thickness of the first alignment layer 16 according to the height of the element structure below the first alignment layer 16. The height difference (step) on the surface of the first alignment layer 16 can be minimized. Here, an alignment layer patterned by a transfer method may be directly manufactured using a relief plate (APR plate) having a special fine structure. Alternatively, a patterned alignment layer may be manufactured by first forming an alignment layer having a uniform thickness and then etching by a photolithography technique. Alternatively, first, an alignment layer having a uniform thickness is applied, and the alignment layer is patterned by an imprint method before solidifying so that the alignment layer has a different thickness, and then the alignment layer is solidified. Get from. However, the method of patterning the alignment layer of the present invention is not limited to these. Through the above steps, the thin film transistor substrate of this embodiment is completed. Hereinafter, the design of the thickness of the first alignment layer 16 of this embodiment will be described in detail.

  As shown in FIG. 3A, the pixel electrode region Px and the non-pixel electrode region Px ′ are disposed above the first substrate 11. The pixel electrode region Px corresponds to the region where the pixel electrode 15 is provided, the non-pixel electrode region Px ′ corresponds to the region where the pixel electrode 15 is not provided, and the data line 13 and the scanning line (not shown). ) Is provided. Specifically, the pixel electrode region Px illustrated in FIG. 3A includes an opening region O and a non-opening region O ′. The opening region O corresponds to a region where the pixel electrode 15 and the thin film transistor unit 14 do not overlap, and the non-opening region O ′ is a region where the thin film transistor unit 14 is provided below the pixel electrode 15. The first alignment layer 16 on the pixel electrode region Px (particularly the opening region O in the pixel electrode region Px) has the first thickness T1, and the first alignment layer 16 on the non-pixel electrode region Px ′ has the second thickness. T1 and the first thickness T1 is greater than the second thickness T2. The ratio of the first thickness to the second thickness (T1 / T2) is preferably 1 to 10 (1 ≦ T1 / T2 ≦ 10), and preferably 1 to 5 (1 ≦ T1 / T2 ≦ 5). Is more preferable, and 2 to 4 (2 ≦ T1 / T2 ≦ 4) is particularly preferable. In the present embodiment, the first thickness T1 may be 0.1 μm to 0.2 μm, and the second thickness T2 may be 0.01 μm to 0.08 μm.

  However, the present invention is not limited to the above thickness range. The higher the structure of the lower element of the first alignment layer 16, the lower the thickness of the first alignment layer 16, so that the object of the present invention is achieved. be able to. Specifically, as shown in FIG. 3A, the first substrate 11 has a first surface 111, and the first alignment layer 16 has a second surface 165 (lower surface) and a third surface 166 (upper surface). The second surface 165 faces the first substrate 11 and the third surface 166 is adjacent to a liquid crystal layer (not shown). Here, the region where the pixel electrode 15 (particularly, the opening region O) is disposed on the first substrate 11 is defined as a second region R2, the data line 13 and the scanning line (not shown) are disposed, and the color filter unit. A portion overlapping 221 and 222 is defined as a third region R3. If the first surface 111 of the first substrate 11 is used as a reference, the second surface 165 of the first alignment layer 16 of the first substrate 11 on the second region R2, the first surface 111 of the first substrate 11, and The distance D1 between the second region R2 and the third region R3 is smaller than the distance D2 between the second surface 165 of the first alignment layer 16 on the third region R3 and the first surface 111 of the first substrate 11. The first alignment layer 16 on the region R3 has a first thickness T1 and a second thickness T2, respectively, and the first thickness T1 is larger than the second thickness T2. In particular, in the liquid crystal display panel of the present embodiment, the distance between the third surface 166 of the first alignment layer 16 on the second region R2 and the first surface 111 of the first substrate 11 and the third region R3. The distance difference between the third surface 166 of the first alignment layer 16 and the distance between the first surface 111 of the first substrate 11 can be greatly reduced.

  Here, for the purpose of description, the second region R2 and the third region R3 illustrated in FIG. 3A are included, but the second region R2 and the third region R3 are not limited to the region illustrated in FIG. The distance D1 on R2 may be another portion of the first substrate 11 as long as the condition smaller than the distance D2 on the third region R3 is satisfied. Although only the data line region portion has been described here, a person skilled in the art understands that the scanning line region may use the same first alignment layer thickness design as the data line region. The

  Further, as shown in FIG. 3A, the first alignment layer 16 in the connection opening 147 has a fifth thickness T5. If the first surface 111 of the first substrate 11 is used as a reference, the distance D3 between the second surface 165 of the first alignment layer 16 and the first surface 111 of the first substrate 11 in the connection opening 147 is: Since the distance D1 is smaller than the distance D2, the fifth thickness T5 is set to the first thickness T1 and the second thickness T2 in order to reduce the height difference (step) of the third surface 166 of the first alignment layer 16. Larger than.

  In another embodiment, as shown in FIG. 3B, after the color filter units 221 and 222 are formed, the color filter layer opening 223 is formed first, and then the side wall of the color filter layer opening 223 is covered. The second protective layer 146 is formed, and then the connection opening 147 for exposing the drain 1442 is simultaneously formed in the first protective layer 145 and the second protective layer 146. In the preferred embodiment, as shown in FIG. 3C, the color filter unit 221 is formed only between the thin film transistor unit 14, the data line 13, and the scanning line (not shown), and the thin film transistor unit 14, the data line 13, and the scanning line. A second protective layer 146 is directly covered on the line (not shown). In the other embodiments shown in FIGS. 3B and 3C, the design of the thickness of the first alignment layer 16 is the same as that in the above embodiment, and is omitted here.

  FIG. 4 is a schematic cross-sectional view showing the second substrate and the upper structure of the liquid crystal display panel according to this embodiment. On the second substrate 21, a black matrix 23, a third protective layer 24, a common electrode layer 25, a spacer 3, and a second alignment layer 26 are disposed in order. The third protective layer 24 covers the black matrix 23 and the second substrate 21, the common electrode layer 25 covers the third protective layer 24, and the spacer 3 is disposed on the common electrode layer 25 corresponding to the black matrix 23. The second alignment layer 26 is provided on the spacer 3 and the common electrode layer 25. Here, the positions where the black matrix 23 and the spacers 3 are arranged correspond to the thin film transistor unit 14 shown in FIGS. 3A to 3C. Since the material of the third protective layer 24 is the same as the material of the first protective layer 145 and the second protective layer 146 (see FIG. 3A) of the first substrate 11, description thereof is omitted here. The common electrode layer 25 of this embodiment may be a flat electrode layer generally used in this technical field, and the material thereof is a transparent conductive material generally used in this technical field. For example, a transparent conductive material of a metal oxide such as ITO or IZO may be used. In addition, since the second alignment layer 26 of the present embodiment employs the same method as the method for manufacturing the first alignment layer, the description thereof is omitted here. In the present embodiment, the second alignment layer 26 does not have a uniform thickness by adjusting the thickness of the second alignment layer 26 according to the height of the element structure below the second alignment layer 26. The height difference (step) on the surface of the two alignment layer 26 can be minimized. Special attention should be paid to this point. Hereinafter, the design of the thickness of the second alignment layer 26 of the present embodiment will be described in detail.

  As shown in FIG. 4, the second alignment layer 26 on the spacer 3 has a third thickness T3, the second alignment layer 26 on the black matrix 23 has a fourth thickness T4, and the second substrate 21 The upper second alignment layer 26 has a sixth thickness T6, and the sixth thickness T6 is greater than the fourth thickness T4, and the fourth thickness T4 is greater than the third thickness T3. Comparing the thickness of the spacer 3 and the first alignment layer 16 on the first substrate 11 (see FIG. 3A), the third thickness T3 is equal to the first alignment layer 16 on the pixel electrode region Px and the non-pixel electrode region Px ′. Is less than the thickness. In some embodiments, the third thickness T3 of the second alignment layer 26 on the spacer 3 may be very thin and close to 0 nm (ie, not measurable with a scanning electron microscope (SEM)). Further, the viscosity of the material of the alignment layer is related to the polymerization degree or type of the polymer. For example, when the same type of polymer is used, the degree of polymerization becomes high and the material of the alignment layer has a high viscosity. Therefore, in one embodiment of the present invention, for example, an alignment layer made of a highly viscous material such as a polymer having a large molecular weight is used. In this case, at least one protruding structure, at least one raised portion, or a combination thereof may be formed on the surface of the alignment layer. It is preferable that the protrusion structure and the raised portion are simultaneously formed on the surface of the alignment layer. Further, when a protrusion structure is formed on the surface of the alignment layer, the height of the protrusion structure (specifically, the height that is the distance between the top end of the protrusion structure and the surface of the alignment layer) and the protrusion structure are adjacent to each other. The ratio of the thicknesses of the alignment layers is 2-10. In another embodiment of the present invention, for example, an alignment layer made of a low viscosity material such as a polymer having a low molecular weight is used. In this case, a raised portion may be formed on the surface of the alignment layer. The edge of the alignment layer may have at least one curved structure. Here, the “curved structure” includes a structure formed from an arc, a straight line, a wave shape, or a combination thereof.

  In the present embodiment, the material of the alignment layer (including the first alignment layer 16 and the second alignment layer 26) is not particularly limited. For example, polyimide (polyimide), polyvinyl cinnamate (PVCN), and The material of the alignment layer generally used in this technical field, such as polymethylmethacrylate (PMMA), may be used, but is not limited thereto. The material of the alignment layer of the present invention is preferably a polyimide having a high viscosity.

  After completing the first substrate 11, the second substrate 21 and all the elements thereon, as shown in FIG. 1, the first substrate 11 and the second substrate 21 are combined facing each other, and the sealing agent 5 is used. When the liquid crystal layer 4 was formed by bonding and injecting liquid crystal molecules, the liquid crystal display panel of this embodiment was completed. In order to improve the adhesion between the first alignment layer 16 and the second alignment layer 26 and the sealant 5 (see FIGS. 1, 3A to 3C, and 4 simultaneously), the first alignment layer 16 of the present embodiment. And the microstructure was further designed in the edge region of the second alignment layer 26. Hereinafter, the fine structure in the edge region of the first alignment layer 16 and the second alignment layer 26 of the present embodiment will be described in detail. Note that the edge regions of the first alignment layer 16 and the second alignment layer 26 may be designed to be the same or different. Here, only the first alignment layer 16 will be described, but the description of the second alignment layer 26 will be omitted.

FIG. 5 is a schematic view showing a case where the first alignment layer of the liquid crystal display panel according to the present embodiment is provided on the first substrate. As shown in FIG. 5, in the liquid crystal display panel of the present embodiment, the first alignment layer 16 is provided on the first substrate 11, and the protrusion structure 161 and the plurality of protrusion structures 161 are provided in the edge region P of the first alignment layer 16. The raised portion 162 is provided. When the first substrate 11 is defined as the display region D and the non-display region N, the protruding structure 161 and the raised portion 162 on the first alignment layer 16 are provided on the non-display region N of the first substrate. In this embodiment,
The material of the first alignment layer 16 is the same as the material of the protruding structure 161 and the raised portion 162, and the protruding structure 161 and the raised portion 162 and the first alignment layer 16 are integrally formed. Here, a relief plate or a mask corresponding to the pattern of the first alignment layer 16 and the protrusion structure 161 thereabove may be used. Alternatively, a relief plate or a mask corresponding to the pattern of the first alignment layer 16 and the protruding structure 161 and the raised portion 162 above the first alignment layer 16 may be used, and the protruding structure 161 and the raised portion 162 may be formed simultaneously with the formation of the first alignment layer 16. Form. However, in another embodiment, the raised portion 162 does not use a relief plate or a mask corresponding to the pattern of the raised portion 162, and particles (crystal nuclei, crystals, crystals) generated when the material of the alignment layer is polymerized. Grains or aggregates).

  6A to 6D are schematic cross-sectional views of the first alignment layer of the liquid crystal display panel according to this embodiment, taken along the line B-B ′ in the non-display region N of FIG. 5. As shown in FIG. 6A, a height H1 that is the distance between the protrusion structure 161 on the first alignment layer 16 and the surface 163 of the first alignment layer 16, and the thickness of the first alignment layer 16 adjacent to the protrusion structure 161. The ratio with T is 2-10. Here, the height H1 may be 150 nm to 300 nm, and the thickness may be 10 nm to 100 nm. However, the present invention is not limited to the above thickness range. If the protruding structure 161 of the first alignment layer 16 has a remarkable height, the pressure and adhesion of the edge region of the alignment layer to the substrate are strengthened, and the coating film shrinks when the alignment layer material is bleed out and solidified. Can be reduced, and displacement of the alignment layer can be prevented. A plurality of raised portions 162 are further provided next to the protruding structure 161 on the first alignment layer 16. Here, the height H2 of the raised portion 162 may be 5 nm to 30 nm, but the present invention is not limited thereto. 6A has a side that is perpendicular to the surface 163 of the first alignment layer 16. However, in other embodiments, both sides of the protruding structure 161 may be inclined surfaces (see FIG. 6B). Alternatively, the protruding structure 161 may have an arc shape (see FIG. 6C). Alternatively, one side of the protruding structure 161 is perpendicular to the surface of the first alignment layer 16 (see FIG. 6C). However, the present invention is not limited to these. 6A to 6D are all represented by a smooth surface. However, in other embodiments, the projection structure 161 may have a non-uniform surface such as a hook-shaped structure. .

  7A to 7C are schematic cross-sectional views of the first alignment layer of the liquid crystal display panel according to the present embodiment taken along the line C-C ′ in the non-display region N of FIG. 5. Generally, no wiring is provided in the non-display area N of the liquid crystal display panel, and the protruding structure 161 of the present embodiment is further provided on the wiring 6 in the non-display area N.

  When the liquid crystal display panel of the present embodiment is packaged by the sealant 5, the relationship between the protruding structure 161 of the first alignment layer 16 and the sealant 5 is shown as in FIG. 8A. By disposing the protruding structure 161, the sealing agent 5 covers the protruding structure 161, so that the contact area with the first alignment layer 16 can be increased, and the sealing agent 5 and the first alignment layer 16 are further increased. The occurrence of peeling can be suppressed. At the same time, as shown in FIG. 8A, the outer edge of the first substrate 11 protrudes outside the sealing agent 5.

  However, in another preferred embodiment of the present invention, the outer edge of the first substrate 11 may be aligned with the sealant 5 as shown in FIG. 8B. In another preferred embodiment, polyimide having a low viscosity is used as the material for the alignment layer. Therefore, although the protruding structure 161 as shown in FIG. 8A cannot be formed, as shown in FIG. 10, the edge of the first alignment layer 16 has a special curved structure such as a wave structure.

  Whether the first alignment layer 16 has the protrusion structure 161 and the raised portion 162 shown in FIG. 5, or the first alignment layer 16 has the raised portion 162 and the edge of the wavy structure shown in FIG. A plurality of particles 164 may be generated therein. As shown in FIG. 9, these particles may be crystal nuclei, crystals, crystal grains, or aggregates generated when the first alignment layer 16 is solidified. In particular, the size of the particles 164 provided in the non-display area N is larger than the size of the particles 164 provided in the display area D. In other embodiments, the first alignment layer 16 may not include the particles 164, or the particles 164 may be formed only in the non-display region N.

  Here, it is particularly desirable to explain that FIGS. 5 to 9 show a case where only the first alignment layer 16 is disposed on the first substrate 11. However, those skilled in the art will understand that other elements (for example, thin film transistor elements) between the first substrate 11 and the first alignment layer 16 are omitted here.

  Further, as shown in FIG. 11, the liquid crystal display panel manufactured according to the above embodiment of the present invention may be applied to the liquid crystal display device 7. The liquid crystal display device includes a backlight module (not shown) and the liquid crystal display panel (not shown) provided on the backlight module. Here, a display is an example of a liquid crystal display device. For example, a display device such as a mobile phone, a notebook computer, a video camera, a camera, a music player, a mobile navigation device, or a television is also manufactured according to the above embodiment of the present invention. A liquid crystal display panel may be used.

  While the preferred embodiments of the present invention have been disclosed above, they are in no way intended to limit the invention. Various changes and modifications according to the scope of the utility model registration request of the present invention belong to the scope of seeking protection of the present invention.

11 First substrate 111 First surface 12 Scan line 13 Data line 14 Thin film transistor unit 141 Gate 142 Insulating layer 143 Semiconductor layer 1441 Source 1442 Drain 1443 Channel region 145 First protective layer 146 Second protective layer 147 Connection opening 15 Pixel electrode 16 First alignment layer 161 Protruding structure 162 Raised portion 163 Surface 164 Particle 165 Second surface 166 Third surface 17 Storage electrode 21 Second substrate 221, 222 Color filter unit 223 Color filter layer opening 23 Black matrix 24 Third protective layer 25 Common electrode layer 26 Second alignment layer 3 Spacer 4 Liquid crystal layer 5 Sealing agent 6 Wiring 7 Liquid crystal display device D Display area D1, D2, D3 Distance H1 Height N Non-display area O Open area O 'Non-open area P Edge area Px Pixel electrode region Px ′ Non-pixel electrode region R2 2nd area | region R3 3rd area | region T thickness T1 1st thickness T2 2nd thickness T3 3rd thickness T5 5th thickness T6 6th thickness

Claims (20)

A first substrate on which a pixel electrode region and a non-pixel electrode region are disposed;
A second substrate disposed opposite the first substrate;
A first alignment layer disposed on the pixel electrode region and the non-pixel electrode region;
A liquid crystal layer provided between the first substrate and the second substrate,
The first alignment layer on the pixel electrode region has a first thickness, the first alignment layer on the non-pixel electrode region has a second thickness, and the first thickness is A liquid crystal display panel having a thickness greater than the second thickness.   The pixel electrode region includes a pixel electrode, the non-pixel electrode region includes a data line and a scanning line, the first alignment layer on the pixel electrode has the first thickness, and the data The liquid crystal display panel according to claim 1, wherein the first alignment layer on the line or the scanning line has the second thickness.   The liquid crystal display panel according to claim 1, wherein the first alignment layer includes a plurality of particles.   The first substrate includes a display area and a non-display area, and a size of at least one of the particles provided in the non-display area is greater than a size of at least one particle provided in the display area. The liquid crystal display panel according to claim 3.   The first substrate includes a display region and a non-display region, and the first alignment layer on the non-display region corresponding to the first substrate has at least one protrusion structure, at least one raised portion, or the The liquid crystal display panel according to claim 1, further comprising a combination.   The liquid crystal display panel according to claim 5, wherein a material of the first alignment layer is the same as a material of the protruding structure or the raised portion.   6. The liquid crystal display panel according to claim 5, wherein the protruding structure or the raised portion and the first alignment layer are integrally formed.   The liquid crystal display panel according to claim 5, wherein a ratio of a height of the protruding structure to a thickness of the first alignment layer adjacent to the protruding structure is 2 to 10.   The liquid crystal display panel according to claim 1, wherein an edge of the first alignment layer has at least one curved structure.   2. The liquid crystal display panel according to claim 1, further comprising a sealant positioned between the first substrate and the second substrate and partially covering the first alignment layer.   6. The method according to claim 5, further comprising a sealant positioned between the first substrate and the second substrate and partially covering at least one of the protruding structures, at least one of the raised portions, or a combination thereof. A liquid crystal display panel as described in 1.   The liquid crystal display panel according to claim 1, wherein a ratio of the first thickness to the second thickness is 1 to 10.   The liquid crystal display panel according to claim 1, further comprising a color filter unit provided on the first substrate and positioned between the first substrate and the first alignment layer. And further comprising at least one spacer, a black matrix, and a second alignment layer,
The black matrix is provided on the second substrate;
The spacer is provided between the first substrate and the second substrate corresponding to the black matrix,
The second alignment layer is provided on the second substrate, the black matrix, and the spacer,
The second alignment layer on the spacer has a third thickness, the second alignment layer on the black matrix has a fourth thickness, and the third thickness is greater than the fourth thickness. The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel is also small. A thin film transistor element and a first protective layer are further provided on the first substrate.
The thin film transistor element includes a gate, an insulating layer, a semiconductor layer, a source, and a drain,
The insulating layer covers the gate;
The semiconductor layer is provided on the insulating layer,
The source and the drain are provided on the semiconductor layer;
The source and the drain are arranged at a predetermined distance so that a channel region is formed,
The first protective layer covers the thin film transistor element and has an opening so that the drain is exposed;
The pixel electrode is provided on the first protective layer and extends toward the opening so as to be electrically connected to the drain.
3. The liquid crystal display panel according to claim 2, wherein the first alignment layer in the opening has a fifth thickness, and the fifth thickness is larger than the first thickness. A first substrate on which a pixel electrode region and a non-pixel electrode region are disposed;
A second substrate disposed opposite the first substrate;
A first alignment layer disposed on the pixel electrode region and the non-pixel electrode region including an opening region and a non-opening region;
A liquid crystal layer provided between the first substrate and the second substrate,
The first alignment layer on the opening region of the pixel electrode region has a first thickness, the first alignment layer on the non-pixel electrode region has a second thickness, and the first A liquid crystal display panel having a thickness greater than the second thickness.   The opening region of the pixel electrode region includes a pixel electrode; the non-pixel electrode region includes a data line and a scanning line; and the first alignment layer on the pixel electrode has the first thickness; The liquid crystal display panel according to claim 16, wherein the first alignment layer on the data line or the scanning line has the second thickness. A first substrate having a first surface;
A second substrate disposed opposite the first substrate;
A liquid crystal layer provided between the first substrate and the second substrate;
A first alignment layer provided on the first substrate and having a second surface facing the first substrate and a third surface adjacent to the liquid crystal layer;
And at least one spacer provided between the first substrate and the second substrate,
The first substrate includes a first region, a second region, and a third region,
The spacer corresponds to the first region;
The distance between the second surface of the first alignment layer on the second region and the first surface of the first substrate is different from the second surface of the first alignment layer on the third region. Smaller than the distance between the first surface of the first substrate,
The first alignment layer on the second region and the third region has a first thickness and a second thickness, respectively, and the first thickness is larger than the second thickness. A characteristic LCD panel. A pixel electrode is disposed on the second region of the first substrate.
A data line and a scanning line are disposed on the third region of the first substrate.
The first alignment layer on the pixel electrode has the first thickness, and the first alignment layer on the data line or the scan line has the second thickness. 18. A liquid crystal display panel according to 18. A liquid crystal display device comprising the liquid crystal display panel according to claim 1,
A liquid crystal display device used for a mobile phone, a notebook computer, a video camera, a camera, a music player, a mobile navigation device or a television.

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