ARRAY SUBSTANT AND LIQUID CRYSTAL DISPLAY DEVICE

Abstract

Array substrate, comprising the following: a substrate (309, 409, 509); a plurality of scanning lines (101, 201) and a plurality of data lines (102, 202) arranged on the substrate (309, 409, 509) such that they cross each other to delimit a plurality of pixel elements (104), and which are isolated from each other; a first transparent conductive layer (204, 304, 404, 504) arranged on the substrate (309, 409, 509); and a second transparent conductive layer (203, 303, 403, 503) which is arranged on the substrate (309, 409, 509) and parallel to and insulated from the first transparent conductive layer (204, 304, 404, 504); wherein the data lines (102, 202), the first transparent conductive layer (204, 304, 404, 504) and the second transparent conductive layer (203, 303, 403, 503) each have a plurality of bent sections and the bent sections of the second transparent conductive layer (203, 303, 403, 503) are parallel to those of the first transparent conductive layer (204, 304, 404, 504); wherein additionally or alternatively the curved sections of the data lines (102, 202) are parallel to those of the first transparent conductive layer (204, 304, 404, 504) or the second transparent conductive layer (203, 303, 403, 503); wherein a plurality of curved sections of the edges of the second transparent conductive layer (203, 303, 403, 503) run parallel to a plurality of curved sections of the edges of the first transparent conductive layer (204, 304, 404, 504); wherein additionally or alternatively a plurality of curved sections of the edges of the data lines (102, 202) run parallel to the curved sections of the edges of the first transparent conductive layer (204, 304, 404, 504) or to the curved sections of the edges of the second transparent conductive layer (203, 303, 403, 503), wherein the array substrate further comprises a first insulating layer (310, 410) arranged between the first transparent conductive layer (204, 304, 404, 504) and the second transparent conductive layer (203, 303, 403, 503), wherein the first transparent conductive layer (204, 304, 404, 504) comprises a plurality of first transparent electrodes arranged parallel to each other and wherein a slot is provided between adjacent first transparent electrodes and each of the first transparent electrodes has a plurality of bent sections; wherein the second transparent conductive layer (203, 303, 403, 503) comprises a plurality of second transparent electrodes parallel to each other and a slot structure is provided between adjacent second transparent electrodes, and wherein each of the second transparent electrodes comprises a plurality of bent sections, wherein the first transparent electrodes and the second transparent electrodes each comprise a first segment (603a), a second segment (603b) and a third segment (603c), wherein the first segment and the second segment are connected by a first curved section, the second segment and the third segment are connected by a second curved section, the first segment (603a) and the third segment (603c) are located at both ends of the first transparent electrodes and the second transparent electrodes; the third segment (603c) is parallel to the first segment (603a), and the third segment (603c) and the first segment (603a) extend in the same direction.

Description

Area of ​​Revelation

[0001] The present disclosure relates to the field of liquid crystal display technologies, more particularly to an array substrate and a liquid crystal display device including the array substrate. State of the art

[0002] The currently predominant displays include flat panel displays, with the liquid crystal display device having been widely used in computer displays, mobile phones, personal digital assistants, flat panel TVs and other electronic products due to its light weight and thinness, low power consumption, zero radiation and other advantages.

[0003] To overcome the disadvantage of the narrow viewing angle of prior art liquid crystal display devices, some manufacturers have developed liquid crystal display devices with a wide viewing angle, and an in-plane switching (IPS) liquid crystal display device is one of the best. Typically, an IPS liquid crystal display device includes upper and lower substrates arranged opposite each other, and a liquid crystal layer encapsulated between the two substrates. Gate lines, data lines, thin-film transistors, pixel electrodes, and common electrodes are arranged on the lower substrate.The IPS liquid crystal display device has the advantages of a wide viewing angle, high luminous efficiency, and high contrast because the pixel electrodes and the common electrodes are arranged on the same substrate, and the liquid crystal molecules are rotated in the same plane due to a transverse electric field parallel to the substrate between the pixel electrodes and the common electrodes.

[0004] However, in the prior art, when the liquid crystal display device is compressed, the arrangement and rotation of the liquid crystal molecules may be disturbed, and a displayed image may be distorted, which is referred to as "trace mura." To prevent the occurrence of trace mura, in the prior art, a plurality of common electrodes may be bent at both ends, while some of the common electrodes cannot be bent due to the limited distance between the common electrodes and the data lines. Furthermore, the distance between the bendable common electrodes and the data lines may be too large, so a large block of common electrodes overlying the bendable common electrodes and the data lines may impair the transmittance of the pixel elements and thus the display quality of the entire display device.

[0005] US 2012 / 0 218 501 A1 discloses an array substrate with a pixel electrode divided into several segments extending in different directions.

[0006] US 2010 / 0 157 228 A1 discloses a substrate structure in which each pixel electrode has a plurality of curved sections that divide the pixel electrode into six segments. The segments located at the ends of the pixel electrode are not parallel to each other and extend in different directions. Summary of Revelation

[0007] In view of the circumstances described, an embodiment of the present invention provides an array substrate according to claim 1, comprising: a substrate; a plurality of scan lines and a plurality of data lines arranged on the substrate so as to cross each other and be insulated from each other, and a plurality of pixel elements defined by the scan lines and the data lines; a first transparent conductive layer disposed on the substrate; and a second transparent conductive layer disposed on the substrate and parallel to and insulated from the first transparent conductive layer; wherein the data lines, the first transparent conductive layer, and the second transparent conductive layer each have a plurality of bent portions, and the bent portions of the second transparent conductive layer are parallel to those of the first transparent conductive layer and / or the bent portions of the data lines are parallel to those of the first transparent conductive layer or the second transparent conductive layer.

[0008] An embodiment of the present disclosure further provides a liquid crystal display device comprising: the array substrate described above; a color filter substrate; and a liquid crystal layer encapsulated between the array substrate and the color filter substrate.

[0009] The embodiments of the present disclosure have at least one of the following significant advantages over the prior art:

[0010] The data lines, the first transparent conductive layer, the second transparent conductive layer, and a black matrix layer in the display device according to the present disclosure each comprise a plurality of curved sections arranged parallel to one another, resulting in a three-part curved pixel structure that fully utilizes a pixel space and improves the transmittance of the pixel elements, thereby improving the transmittance in the entire screen. In addition, the curved sections of the data lines, the first transparent conductive layer, and the second transparent conductive layer are arranged parallel to one another.thereby avoiding the problem of uneven display due to inconsistent parasitic capacitances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines due to inconsistent distances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines., Short description of the drawings Fig. 1 is a schematic structural diagram of an array substrate of a prior art IPS liquid crystal display device; Fig. 2 is a schematic structural diagram of an array substrate according to an embodiment of the present disclosure; Fig. 3 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure; Fig. 4 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure; Fig. 5 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure; Fig. 6 is a schematic structural diagram of a transparent electrode according to an embodiment of the present disclosure; and Fig. 7 is a schematic plan view structural diagram of a liquid crystal display device according to an embodiment of the present disclosure. Detailed description

[0011] In Fig. Figure 1 is a schematic structural diagram of an array substrate of a prior art IPS liquid crystal display device. As shown in Fig. As shown in Figure 1, the array substrate of the prior art IPS liquid crystal display device includes: a substrate (not shown); a plurality of scanning lines 101 and a plurality of data lines 102 arranged on the substrate so as to cross each other to define a plurality of pixel elements and insulated from each other; and pixel electrodes 104 arranged in the pixel elements. The pixel electrodes 104 are electrically connected to the drains 106 of the thin-film transistors, and a common electrode layer 103 is arranged on the pixel electrodes 104. The common electrode layer 103 includes a plurality of common electrodes and hollow regions between the common electrodes. An insulating layer (not shown in the figure) is further arranged between the pixel electrodes 104 and the common electrode layer 103.In the prior art, the arrangement and rotation of the liquid crystal molecules can be disturbed when the liquid crystal display device is compressed, and a displayed image can be affected - an effect known as "trace mura".In order to prevent trace mura, in the prior art, a plurality of common electrodes can be bent at both ends thereof, while a part of the common electrodes 103 cannot be bent due to the limited distance between the common electrodes 103 and the data lines 102, as shown in section 107, whereas the distance between the bendable common electrodes and the data lines can be too large, as shown in section 108, so that a large overlying block of common electrodes between the bendable common electrodes and the data lines can impair the transmittance of the pixel elements and thus the display quality of the entire display device.

[0012] The present disclosure will be described below with reference to the drawings, which illustrate exemplary embodiments of the present disclosure. However, the present disclosure may be embodied in a variety of different ways and should not be construed as limited to the embodiments presented herein. On the contrary, these embodiments are provided so that this disclosure will thoroughly, completely, and fully convey the scope of the present disclosure to those skilled in the art. Like elements are designated by like reference numerals.

[0013] It should be noted that when an element is described as being "on" another element, that element may be directly on top of the other element or an intermediate element may be inserted between them. However, when an element is described as being "immediately on" another element, no intermediate element is present. For our purposes, the term "and / or" includes all and any combinations of one or more of the objects referred to.

[0014] The terms used herein are for the sole purpose of describing particular embodiments of the present disclosure, but are not intended to limit the present disclosure. The singular is intended to include the plural, unless the context expressly requires otherwise. Furthermore, it should be noted that the terms "includes" and / or "comprises" are used in the present specification to indicate the presence of noted features, portions, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, portions, integrals, steps, operations, elements, components, and / or groups thereof.

[0015] Additionally, relative terms, such as "lower" or "lowest" and "upper" or "uppermost," may be used herein to describe a relationship of one element to another element as depicted in the figures. It should be understood that the relative terms are intended to encompass orientations of a device other than those described in the drawings. For example, if a device is reversed in one figure, then an element described on the "lower" side of another element will thereafter be located on the "upper" side of the other element. Thus, the illustrative term "below" may encompass both the "lower" and "upper" directions, depending on the particular drawing of the figure.Likewise, when the device in a figure is reversed, an element described as being on the "lower" side or "below" another element is subsequently located on the "upper" side or "above" the other element. Thus, the illustrative term "below" or "below" can encompass both the "upper" and "below" directions, as well as "above" and "below."

[0016] An embodiment of the present disclosure provides an array substrate comprising: a substrate; a plurality of scan lines and a plurality of data lines arranged on the substrate so as to cross each other and be insulated from each other; a plurality of pixel elements defined by the scan lines and the data lines; a first transparent conductive layer arranged on the substrate; and a second transparent conductive layer arranged on the substrate and parallel to and insulated from the first transparent conductive layer.wherein the data lines, the first transparent conductive layer, and the second transparent conductive layer each have a plurality of bent portions, and the bent portions of the second transparent conductive layer are parallel to those of the first transparent conductive layer and / or the bent portions of the data lines are parallel to those of the first transparent conductive layer or the second transparent conductive layer;

[0017] An embodiment of the present invention further provides a liquid crystal display device comprising: the above-mentioned array substrate; a color filter substrate; and a liquid crystal layer encapsulated between the array substrate and the color filter substrate.

[0018] The data lines, the first transparent conductive layer, the second transparent conductive layer, and a black matrix layer in the display device according to the present disclosure each include a plurality of curved portions arranged parallel to each other, resulting in a three-part curved pixel structure that fully utilizes a pixel space and improves the transmittance of the pixel elements to thereby improve the transmittance in the entire screen;and the bent portions of the data lines, the first transparent conductive layer, and the second transparent conductive layer are arranged parallel to each other, thereby avoiding the problem of uneven display due to inconsistent parasitic capacitances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines due to inconsistent distances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines.;

[0019] With the intention of more clearly setting forth the objects, features and advantages of the present disclosure, the present disclosure will be described in more detail below with reference to the drawings and embodiments thereof.

[0020] In Fig. 2 is a schematic structural diagram of an array substrate according to an embodiment of the present disclosure. As shown in Fig. 2, the array substrate according to the present disclosure includes: a substrate (not shown in the figure); a plurality of scan lines 201 and a plurality of data lines 202 arranged on the substrate so as to cross each other and be insulated from each other; a plurality of pixel elements defined by the scan lines 201 and the data lines 202; a first transparent conductive layer 204 arranged on the substrate;and a second transparent conductive layer 203 disposed on the substrate and parallel to and insulated from the first transparent conductive layer 204, wherein the data lines 202, the first transparent conductive layer 204, and the second transparent conductive layer 203 each have a plurality of bent portions, and the bent portions of the second transparent conductive layer 203 are parallel to those of the first transparent conductive layer 204; and wherein the bent portions of the data lines 202 are parallel to those of the first transparent conductive layer 204 or to those of the second transparent conductive layer 203.

[0021] The first transparent conductive layer 204 disposed on the substrate and the second transparent conductive layer 203 disposed on the substrate and parallel to and insulated from the first transparent conductive layer 204 correspond to a number of scenarios described in more detail below.

[0022] Referring to Fig. 2 and Fig. 3, is in Fig. 3 shows a schematic structural diagram of a liquid crystal display device according to the first embodiment of the present invention. An array substrate of a liquid crystal display device according to the present invention comprises: a substrate 309; a first transparent conductive layer 304 disposed on the substrate 309, wherein the first transparent conductive layer 304 includes a plurality of first transparent electrodes parallel to each other, and a slit structure is provided between adjacent first transparent electrodes, each of the first transparent electrodes includes a plurality of bent portions, and a plurality of bent portions parallel to the first transparent electrodes are also disposed at the edges of the first transparent conductive layer 304;a second transparent conductive layer 303 disposed on the substrate 309 and parallel to and insulated from the first transparent conductive layer 304, wherein the first transparent conductive layer 304, which is arranged parallel to the second transparent conductive layer 303, corresponds to two vertically parallel planes; and a first insulating layer 310 disposed between the first transparent conductive layer 304 and the second transparent conductive layer 303;

[0023] If the first transparent conductive layer 304 disposed on the substrate is a pixel electrode layer, then the second transparent conductive layer 303 is a common electrode layer; or if the first transparent conductive layer 304 disposed on the substrate is a common electrode layer, then the second transparent conductive layer 303 is a pixel electrode layer. The first transparent conductive layer and the second transparent conductive layer may be interchangeable in terms of their locations, but the present embodiment is not limited in this respect, which also applies to the following explanations.

[0024] Referring to Fig. 2 and Fig. 4, is in Fig. 4 shows a schematic structural diagram of a liquid crystal display device according to the first embodiment of the present invention. An array substrate of a liquid crystal display device according to the present embodiment includes: a substrate 409;a first transparent conductive layer 404 arranged on the substrate 409; a second transparent conductive layer 403 arranged on the substrate 409 and parallel to and insulated from the first transparent conductive layer 404; the second transparent conductive layer 403 comprising a plurality of second transparent electrodes parallel to each other, a slit structure being provided between adjacent second transparent electrodes, each of the second transparent electrodes comprising a plurality of bent portions, and a plurality of bent portions parallel to the second transparent electrodes are arranged at the edges of the second transparent conductive layer 404; here, the first transparent conductive layer 404, arranged parallel to the second transparent conductive layer 403, corresponds to two vertically parallel planes;and a first insulating layer 410 disposed between the first transparent conductive layer 404 and the second transparent conductive layer 403;

[0025] Referring to Fig. 2 and Fig. 5, is in Fig. 5 shows a schematic structural diagram of a liquid crystal display device according to the first embodiment of the present invention. An array substrate of a liquid crystal display device according to the present embodiment includes: a substrate 509; a first transparent conductive layer 504 disposed on the substrate 509; and a second transparent conductive layer 503 disposed on the substrate 509 and parallel to and insulated from the first transparent conductive layer 504.Both the first transparent conductive layer 504 and the second transparent conductive layer 503 are transparent conductive layers in the same layer; and both the first transparent conductive layer 504 and the second transparent conductive layer 503 include a plurality of transparent electrodes arranged parallel to each other, each of the plurality of parallel transparent electrodes including a plurality of bent portions, and a plurality of bent portions are arranged at both edges of the first transparent conductive layer 504, and the edges of the second transparent conductive layer 503 are parallel to the transparent electrodes. Thus, the first transparent conductive layer 504 arranged parallel to the second transparent conductive layer 503 corresponds to adjacent transparent electrodes that are parallel to each other.

[0026] The liquid crystal display device according to the present embodiment can be implemented in any of the liquid crystal display structures described above, and the present embodiment is not limited in this regard. The data lines, the first transparent conductive layer, and the second transparent conductive layer in the present embodiment each include a plurality of bent portions, and the plurality of bent portions can be formed in a zigzag shape, a notch shape, a wave shape, a three-part bent shape, a more than three-part bent shape, etc. The present embodiment uses the three-part bent shape as an example, but cannot be limited thereto.

[0027] Referring to Fig. 6 is a schematic structural diagram of a transparent electrode according to the first embodiment of the present invention. The first transparent electrodes or the second transparent electrodes or the transparent electrodes each include a first segment 603a, a second segment 603b, and a third segment 603c, wherein the first segment 603a and the second segment 603b are connected in a first bent portion, the second segment 603b and the third segment 603c are connected in a second bent portion, the acute angle of the first segment 603a to the vertical direction is β, the third segment 603c is parallel to the first segment 603a, the acute angle of the third segment 603c to the vertical direction is β, and the acute angle of the second segment 603b to the vertical direction is α, where β and α satisfy the relationship β>α.The first segment 603a and the third segment 603c have the same length L1, and the length of the second segment 603b is L2; ​​L1 and L2 correspond to the following relationship: 8L1 > L2 > 3L1.

[0028] The data lines, the first transparent conductive layer, and the second transparent conductive layer in the display device according to the present invention each comprise a plurality of bent portions arranged parallel to each other, resulting in a three-part bent pixel structure that overcomes the problem of trace mura and also fully utilizes a pixel space and improves the transmittance of the pixel elements to improve the transmittance of an entire screen;In addition, the bent portions of the data lines, the first transparent conductive layer, and the second transparent conductive layer are arranged parallel to each other, thus avoiding the problem of uneven display due to inconsistent parasitic capacitances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines due to inconsistent distances between the edges of the first transparent conductive layer or the second transparent conductive layer and the data lines.; Second embodiment

[0029] Referring to Fig. 2, Fig. 3 and Fig. 7, is in Fig. 7 is a schematic structural diagram in plan view of a liquid crystal display device according to a second embodiment of the present invention. The liquid crystal display device according to the present second embodiment includes: an array substrate; a color filter substrate; and a liquid crystal layer encapsulated between the array substrate and the color filter substrate.

[0030] The array substrate comprises, as shown in Fig. 2: a substrate; a plurality of scan lines 201 and a plurality of data lines 202 arranged on the substrate so as to cross each other and be insulated from each other; a plurality of pixel elements defined by the scan lines 201 and the data lines 202; a first transparent conductive layer 204 arranged on the substrate; and a second transparent conductive layer 203 arranged on the substrate and parallel to and insulated from the first transparent conductive layer 204, wherein the data lines 202, the first transparent conductive layer 204, and the second transparent conductive layer 203 each have a plurality of bent portions, and the bent portions of the second transparent conductive layer 203 are parallel to those of the first transparent conductive layer 204;the bent portions of the data lines 202 are parallel to those of the first transparent conductive layer 204 or the second transparent conductive layer 203;

[0031] According to the presentation in Fig. 3 and Fig. 7, the color filter substrate includes a black matrix layer 311 having a plurality of bent portions parallel to those of the data lines or parallel to those of the first transparent conductive layer or parallel to those of the second transparent conductive layer.

[0032] The present invention has been described in detail above with reference to the preferred embodiments thereof, although the specific implementations of the present invention are not to be considered limiting. Those skilled in the art may make other obvious modifications or substitutions without departing from the scope of the present invention, and all such modifications or substitutions are considered to be within the scope of the present invention.

Claims

[1] Array substrate comprising: a substrate (309, 409, 509); a plurality of scanning lines (101, 201) and a plurality of data lines (102, 202) arranged on the substrate (309, 409, 509) so as to cross each other to define a plurality of pixel elements (104), and which are isolated from each other; a first transparent conductive layer (204, 304, 404, 504) disposed on the substrate (309, 409, 509); and a second transparent conductive layer (203, 303, 403, 503) disposed on the substrate (309, 409, 509) and parallel to and insulated from the first transparent conductive layer (204, 304, 404, 504); wherein the data lines (102, 202), the first transparent conductive layer (204, 304, 404, 504) and the second transparent conductive layer (203, 303, 403, 503) each have a plurality of bent portions, and the bent portions of the second transparent conductive layer (203, 303, 403, 503) are parallel to those of the first transparent conductive layer (204, 304, 404, 504); wherein additionally or alternatively the bent portions of the data lines (102, 202) are parallel to those of the first transparent conductive layer (204, 304, 404, 504) or the second transparent conductive layer (203, 303, 403, 503); wherein a plurality of bent portions of the edges of the second transparent conductive layer (203, 303, 403, 503) run parallel to a plurality of bent portions of the edges of the first transparent conductive layer (204, 304, 404, 504); wherein additionally or alternatively, a plurality of bent portions of the edges of the data lines (102, 202) run parallel to the bent portions of the edges of the first transparent conductive layer (204, 304, 404, 504) or to the bent portions of the edges of the second transparent conductive layer (203, 303, 403, 503), wherein the array substrate further comprises a first insulating layer (310, 410) disposed between the first transparent conductive layer (204, 304, 404, 504) and the second transparent conductive layer (203, 303, 403, 503), wherein the first transparent conductive layer (204, 304, 404, 504) comprises a plurality of first transparent electrodes arranged parallel to one another and wherein a slit is provided between adjacent first transparent electrodes, and each of the first transparent electrodes has a plurality of bent portions; wherein the second transparent conductive layer (203, 303, 403, 503) comprises a plurality of second transparent electrodes parallel to each other, and a slit structure is provided between adjacent second transparent electrodes, and wherein each of the second transparent electrodes comprises a plurality of bent portions, wherein the first transparent electrodes and the second transparent electrodes each comprise a first segment (603a), a second segment (603b), and a third segment (603c), the first segment and the second segment being connected by a first bent portion, the second segment and the third segment being connected by a second bent portion, the first segment (603a) and the third segment (603c) being located at both ends of the first transparent electrodes and the second transparent electrodes; the third segment (603c) being parallel to the first segment (603a), and the third segment (603c) and the first segment (603a) extending in the same direction. [2] The array substrate according to claim 1, wherein the bent portions of the edges of the first transparent conductive layer (204, 304, 404, 504) are parallel to the first transparent electrodes, and additionally or alternatively, the edges of the second transparent conductive layer (203, 303, 403, 503) are parallel to the second transparent electrodes. [3] The array substrate according to claim 1, wherein an acute angle of the first segment to a vertical direction is β, an acute angle of the third segment to the vertical direction is β, and an acute angle of the second segment to the vertical direction is α, and wherein β and α correspond to the relationship β > α. [4] The array substrate according to claim 3, wherein a length of the first segment is L1 and a length of the third segment is the same as the length of the first segment and a length of the second segment is L2, and wherein L1 and L2 satisfy the relationship 8L1 > L2 > 3L1. [5] The array substrate according to claim 1, wherein the first transparent conductive layer (204, 304, 404, 504) and the second transparent conductive layer (203, 303, 403, 503) are transparent conductive layers in a same layer. [6] A liquid crystal display device comprising: the array substrate according to any one of claims 1 to 5; a color filter substrate; and a liquid crystal layer encapsulated between the array substrate and the color filter substrate. [7] The liquid crystal display device according to claim 6, wherein the color filter substrate comprises a black matrix layer (311) having a plurality of bent portions parallel to those of the data lines (102, 202) or parallel to those of the first transparent conductive layer (204, 304, 404, 504) or parallel to those of the second transparent conductive layer (203, 303, 403, 503).

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