Display device

Abstract

A display device according to an example embodiment of the present inventive concept includes a first substrate, a gate line disposed on the first substrate and extending in parallel to a first direction, a storage electrode line disposed on the same layer as the gate line, a data line insulated from the gate line and the storage electrode line and extending in parallel to a second direction perpendicular to the first direction, a drain electrode disposed on the same layer as the data line and including an extension, a first electrode electrically connected to the drain electrode, a spacer disposed on the first electrode, a second substrate overlapping the first substrate, and a light blocking layer disposed on the second substrate and having an opening exposing the first electrode, a separation distance between the extension of the drain electrode and the data line along the first direction being 1 to 10 µm.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0051356, filed on April 28, 2020, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a display device, and more specifically, to a display device for preventing light leakage. Background Technology

[0004] Liquid crystal displays (LCDs) are among the most widely used display devices today. LCDs control the amount of transmitted light by applying voltage to electrodes (pixel electrodes and common electrodes) formed on two facing substrates, thereby controlling the alignment of the liquid crystal in the liquid crystal layer between the electrodes.

[0005] The liquid crystal display includes thin-film transistors connected to electrodes. The thin-film transistors serve as switching elements that independently drive each pixel in the liquid crystal display.

[0006] In detail, a thin-film transistor is a switching element that controls a data signal to be provided to a pixel electrode via a data line in each pixel in response to a gate signal provided through a gate line in each pixel. The thin-film transistor includes a gate electrode connected to the gate line, a semiconductor layer disposed on the gate electrode and forming a channel, a source electrode disposed on the semiconductor layer and connected to the data line, and a drain electrode spaced apart from the source electrode, with the semiconductor layer between the source electrode and the drain electrode.

[0007] Since flexible display devices have been used recently, misalignment between the two substrates of the display device may occur during the bending process.

[0008] The information disclosed in this background section is only intended to enhance the understanding of the background of the present invention, and therefore, the above information may contain information that does not constitute prior art known to those skilled in the art in this country. Summary of the Invention

[0009] An exemplary embodiment will provide a display device for preventing light leakage caused by misalignment of the upper substrate and the lower substrate.

[0010] A display device according to an exemplary embodiment of the present invention includes: a first substrate; a gate line disposed on the first substrate and extending parallel to a first direction; a storage electrode line disposed on the same layer as the gate line; a data line insulated from the gate line and the storage electrode line and extending parallel to a second direction perpendicular to the first direction; a drain electrode disposed on the same layer as the data line and including an extension; a first electrode electrically connected to the drain electrode; a spacer disposed on the first electrode; a second substrate overlapping the first substrate; and a light-blocking layer disposed on the second substrate and having an opening exposing the first electrode, wherein the separation distance along the first direction between the extension of the drain electrode and the data line is 1 μm to 10 μm.

[0011] The length of the extension of the drain electrode along the first direction may be longer than the length of the extension of the drain electrode along the second direction.

[0012] The storage electrode line may include a lateral portion disposed parallel to the first direction and a protruding portion protruding from the lateral portion along the second direction, and the protruding portion of the storage electrode line may be completely covered by the extension of the drain electrode.

[0013] The planar area of ​​the extension of the storage electrode line may be smaller than the planar area of ​​the extension of the drain electrode.

[0014] The length of the spacer along the first direction is longer than the length of the extension of the drain electrode along the first direction.

[0015] The difference between the width of the first electrode along the first direction and the width of the spacer along the first direction can be 20% or less.

[0016] The distance between one edge of the light-blocking layer extending parallel to the first direction and one edge of the spacer extending parallel to the first direction can be 5 μm to 10 μm.

[0017] The distance between an edge of the light-blocking layer extending parallel to the first direction and an edge of the extension of the drain electrode extending parallel to the first direction can be 10 μm or less.

[0018] An edge of the extension of the drain electrode extending parallel to the first direction may be configured to be closer to the opening of the light-blocking layer than an edge of the spacer extending along the first direction.

[0019] It may also include a color filter disposed between the drain electrode and the first electrode, the color filter may include an opening overlapping the drain electrode, and the spacer may be configured to overlap the opening in a plan view.

[0020] The first electrode may include: a main portion extending parallel to the second direction; a small branch portion extending from the main portion; and a protrusion connected to the drain electrode. The protrusion and the main portion may be spaced apart from each other.

[0021] The gate line may include: a first gate line and a second gate line extending parallel to the first direction; and a gate electrode connecting the first gate line and the second gate line, wherein the spacer may overlap with the gate electrode in a plan view.

[0022] A display device according to another exemplary embodiment of the present invention includes: a first substrate; a gate line disposed on the first substrate and extending parallel to a first direction; a storage electrode line disposed on the same layer as the gate line; a data line insulated from the gate line and the storage electrode line and extending parallel to a second direction perpendicular to the first direction; a drain electrode disposed on the same layer as the data line and including an extension; a first electrode electrically connected to the drain electrode; a spacer disposed on the first electrode; a second substrate overlapping the first substrate; and a light-blocking layer disposed on the second substrate and having an opening exposing the first electrode, wherein the extension of the drain electrode includes a first region and a second region, the length of the first region along the first direction being shorter than the length of the second region along the first direction, and the second region being closer to the opening of the light-blocking layer than the first region.

[0023] The separation distance along the first direction between the first region of the extension of the drain electrode and the data line can be from 1 μm to 10 μm.

[0024] The length of the spacer along the first direction may be longer than the length of the extension of the drain electrode along the first direction.

[0025] The storage electrode line may include a lateral portion extending parallel to the first direction and a protruding portion protruding from the lateral portion, the length of the spacer along the first direction being longer than the length of the extension of the drain electrode along the first direction, and in a plan view, the lateral portion of the storage electrode line may overlap with the first region of the extension of the drain electrode.

[0026] The entire protruding portion of the storage electrode line can be covered by the extension of the drain electrode.

[0027] A display device according to another exemplary embodiment of the present invention includes: a first substrate; a gate line disposed on the first substrate and extending parallel to a first direction; a storage electrode line disposed on the same layer as the gate line; a data line insulated from the gate line and the storage electrode line and extending parallel to a second direction perpendicular to the first direction; a drain electrode disposed on the same layer as the data line and including an extension; a first electrode electrically connected to the drain electrode; a spacer disposed on the first electrode; a second substrate overlapping the first substrate; and a light-blocking layer disposed on the second substrate and having an opening exposing the first electrode, wherein the extension of the drain electrode includes a first edge and a second edge parallel to the first direction, the first edge being positioned closer to the opening of the light-blocking layer than the second edge, and the length of the first edge along the first direction being longer than the length of the second edge along the first direction.

[0028] The planar shape of the extension of the drain electrode can be trapezoidal.

[0029] The storage electrode line may include a lateral portion extending parallel to the first direction and a protruding portion protruding from the lateral portion along the second direction, and the lateral portion of the storage electrode line is configured to be closer to the second edge than the first edge of the extension of the drain electrode.

[0030] The separation distance along the first direction between the second edge of the extension of the drain electrode and the data line can be from 1 μm to 10 μm.

[0031] According to an exemplary embodiment, a display device is provided that can prevent light leakage during misalignment of the upper substrate and the lower substrate. Attached Figure Description

[0032] Figure 1 This is a layout diagram of a display device according to an exemplary embodiment of the present invention.

[0033] Figure 2 It is along Figure 1 The cross-sectional view taken from line II-II'.

[0034] Figure 3 It is along Figure 1 The cross-sectional view taken from line III-III'.

[0035] Figure 4 This is a simplified view of the orientation of liquid crystal molecules when the spacer does not fill the opening.

[0036] Figure 5 This is a view showing the orientation of liquid crystal molecules when the spacer fills the opening according to this exemplary embodiment.

[0037] Figure 6 This is a view illustrating the principle of light leakage when misalignment occurs between the upper and lower substrates.

[0038] Figure 7 It only shows according to Figure 1 A view of a partial configuration of the storage electrode lines and drain electrode in an exemplary embodiment of a display device.

[0039] Figure 8 This illustrates a parallel between [the two] according to another exemplary embodiment. Figure 7 The view of the same area.

[0040] Figure 9 and Figure 10 This illustrates another exemplary embodiment of the concept according to the present invention. Figure 7 The view of the same area. Detailed Implementation

[0041] The inventive concept will be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the inventive concept are illustrated. As those skilled in the art will recognize, the described embodiments may be modified in various ways without departing from the spirit or scope of the inventive concept.

[0042] To clearly explain the inventive concept, parts not directly related to the inventive concept have been omitted, and throughout the specification, the same reference numerals are attached to the same or similar constituent elements.

[0043] Furthermore, for better understanding and ease of description, the dimensions and thicknesses of each configuration shown in the figures are arbitrarily illustrated, but the inventive concept is not limited thereto. In the figures, the thicknesses of layers, films, panels, regions, etc., are exaggerated for clarity. In the figures, the thicknesses of some layers and regions are exaggerated for better understanding and ease of description.

[0044] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element, or there may be intermediate elements present. In contrast, when an element is referred to as being "directly on" another element, there are no intermediate elements present. Furthermore, in this specification, the terms "on" or "above" refer to being positioned on or below a target portion, and do not necessarily mean being positioned on the upper side of the target portion based on the direction of gravity.

[0045] In addition, unless explicitly stated otherwise, the word “including” and variations such as “contains” or “includes” will be understood to implicitly include the elements of the statement, but not exclude any other elements.

[0046] In addition, when “connected to” is mentioned in this specification, it means not only that two or more constituent elements are directly connected to each other, but also that two or more constituent elements can be indirectly connected, physically connected and electrically connected through other constituent elements, and may include: each part that is substantially integral but connected to each other, although it is called by different names according to its location or function.

[0047] Furthermore, throughout this specification, the phrase "in a plane" refers to the target portion viewed from above, and the phrase "in a cross section" refers to the cross section formed by vertically cutting the target portion viewed from the side.

[0048] Figure 1 This is a layout diagram of a display device according to an exemplary embodiment of the present invention. Figure 2 It is along Figure 1 The cross-sectional view taken from line II-II'.

[0049] Figure 3 It is along Figure 1 The cross-sectional view taken from line III-III'. Now, refer to... Figures 1 to 3 A display device according to an exemplary embodiment of the present invention will be described in detail.

[0050] Reference Figures 1 to 3 According to an exemplary embodiment, the pixel-included display device includes a first display panel 100 and a second display panel 200 facing each other, and a liquid crystal layer 3 between the first display panel 100 and the second display panel 200.

[0051] First, the first display panel 100 is described. (Refer to...) Figures 1 to 3 The first display panel 100 includes gate lines 121 disposed on a first substrate 110 made of transparent glass or plastic.

[0052] Gate line 121 transmits gate signals and extends in a first direction DR1. Gate line 121 may include a first gate line 121a and a second gate line 121b that are parallel to each other. A gate electrode 124 may be disposed between the first gate line 121a and the second gate line 121b, and the first gate line 121a and the second gate line 121b may be connected through the gate electrode 124. A semiconductor layer 154, a source electrode 173, and a drain electrode 175 may be disposed on the gate electrode 124 to form a transistor.

[0053] Simultaneously refer to Figures 1 to 3 The storage electrode line 131 and the gate line 121 are disposed on the same layer. The storage electrode line 131 can be formed by the same process as the gate line 121 and can include the same material.

[0054] The storage electrode line 131 may include a longitudinal portion 131b extending parallel to the second direction DR2 and a transverse portion 131c extending parallel to the first direction DR1. The two longitudinal portions 131b disposed on the two edges of the first electrode 191 may be connected through the transverse portion 131c.

[0055] A portion of the lateral portion 131c protrudes toward the first electrode 191 in the second direction DR2 to form a protrusion 131a. This will be described separately later, but the protrusion 131a of the storage electrode line 131 can overlap with the extension 177 of the drain electrode 175 in the third direction DR3, thereby forming a capacitor. This will be described separately later, but the planar area of ​​the protrusion 131a of the storage electrode line 131 can be smaller than the planar area of ​​the extension 177 of the drain electrode 175, and the entire protrusion 131a of the storage electrode line 131 can overlap with the extension 177 of the drain electrode 175 in the third direction DR3. Therefore, even if misalignment of the protrusion 131a of the storage electrode line 131 occurs during the manufacturing process of the display device, the extension 177 of the drain electrode 175 still completely covers the protrusion 131a of the storage electrode line 131 because the entire protrusion 131a of the storage electrode line 131 overlaps with the extension 177 of the drain electrode 175, and the capacitor can be stably maintained.

[0056] Reference Figures 1 to 3 A gate insulating layer 140 is disposed on the gate line 121 and the storage electrode line 131. The gate insulating layer 140 may comprise silicon oxide or silicon nitride. The gate insulating layer 140 may have a multilayer structure, the multilayer structure comprising at least two insulating layers with different physical properties.

[0057] A semiconductor layer 154 is disposed on the gate insulating layer 140. The semiconductor layer 154 may be configured to overlap with the gate electrode 124. (See reference...) Figure 1Multiple semiconductor patterns 155 can be disposed on the same layer as the semiconductor layer 154. Multiple semiconductor patterns 155 can be disposed at locations where the gate line 121 and the data line 171 intersect. Short circuits between the gate line 121 and the data line 171 may occur due to conductive particles in the area where the data line 171 intersects with the gate line 121. When semiconductor patterns 155 are disposed in the intersection area, the possibility of short circuits can be reduced.

[0058] Two data lines 171 are arranged along a first direction DR1. The data lines 171 transmit data signals and extend along a second direction DR2, thereby intersecting with the gate line 121. The source electrode 173 extends from the data lines 171, overlaps with the semiconductor layer 154 and the gate electrode 124, and may have an approximately U-shape.

[0059] The drain electrode 175 is spaced apart from the data line 171 and extends upward from the center of the U-shape of the source electrode 173. The drain electrode 175 may include an extension 177 connected to the first electrode 191. The extension 177 of the drain electrode 175 overlaps with the storage electrode line 131. Specifically, the extension 177 may be configured to completely overlap with the protrusion 131a of the storage electrode line 131.

[0060] A gate electrode 124, a source electrode 173, and a drain electrode 175 are formed together with a semiconductor layer 154 to form a transistor, and the channel region of the transistor is formed in the semiconductor layer 154 between the source electrode 173 and the drain electrode 175.

[0061] Reference Figure 1 The length of the extension 177 of the drain electrode 175 in the first direction DR1 can be longer than the length of the extension 177 of the drain electrode 175 in the second direction DR2. Furthermore, the extension 177 of the drain electrode 175 has a planar area larger than the planar area of ​​the protrusion 131a of the storage electrode line 131, and the entire protrusion 131a of the storage electrode line 131 can be configured to overlap with the extension 177 of the drain electrode 175.

[0062] The length of the extension 177 of the drain electrode 175 in the first direction DR1 can be similar to or less than the distance between the two data lines 171 disposed on both sides of the extension 177 of the drain electrode 175 in the first direction DR1. That is, the extension 177 of the drain electrode 175 can be configured to be separate from the data lines 171 in the first direction DR1.

[0063] Reference Figure 1 and Figure 3In this case, the separation distance t1 between the extension 177 of the drain electrode 175 and the data line 171 in the first direction DR1 can be from 1 μm to 10 μm. This separation distance t1 is designed to ensure space for repair in the event of a short circuit between the storage electrode line 131 and the data line 171 during the manufacturing process. That is, when a short circuit occurs between the storage electrode line 131 and the data line 171, the storage electrode line 131 between the data line 171 and the extension 177 of the drain electrode 175 can be cut for repair.

[0064] like Figures 1 to 3 As shown, the extension 177 of the drain electrode 175 is configured to cover most of the area in the first direction DR1 between two adjacent data lines 171. Since the extension 177 of the drain electrode 175 is provided broadly in the first direction DR1 as described above, the extension 177 of the drain electrode 175 forms a large area of ​​light blocking portion in the first direction DR1, and prevents light leakage even when misalignment occurs between the upper substrate and the lower substrate.

[0065] Reference Figure 1 An edge of the extension 177 of the drain electrode 175 extending parallel to the first direction DR1 can be configured to be adjacent to an edge of the light blocking layer 220. In a plan view, the edge of the extension 177 of the drain electrode 175 extending parallel to the first direction DR1 can be configured to coincide with the edge of the light blocking layer 220.

[0066] In this specification, "adjacent to an edge of the light-blocking layer 220" means that the distance between an edge of the light-blocking layer 220 and an edge of the extension 177 of the drain electrode 175 is 10 μm or less. That is, when taking into account misalignment that may occur during the process, if the distance between an edge of the extension 177 of the drain electrode 175 and an edge of the light-blocking layer 220 is 10 μm or less, it can be considered that they are disposed adjacently.

[0067] Therefore, even if the position of the opening of the light blocking layer 220 changes due to the misalignment between the upper and lower substrates, the extension 177 of the drain electrode 175 also acts as a light blocking portion, thus preventing light leakage.

[0068] Next, a plurality of color filters 230 are provided on the data line 171. The color filters 230 may include a red color filter, a green color filter, and a blue color filter. Each color filter 230 may be provided individually in a region defined by the intersection of the plurality of gate lines 121 and the plurality of data lines 171. However, according to an exemplary embodiment, an organic film may be provided instead of the color filters 230.

[0069] Next, an insulating layer 180 is formed. The insulating layer 180 can be made of an organic insulator, an inorganic insulator such as silicon nitride or silicon oxide, or a low-dielectric-constant insulating material. For example, the insulating layer 180 can be an organic layer, and the thickness of the organic layer can be 2 μm to 3 μm. The insulating layer 180 can prevent the material of the color filter 230 from diffusing into the liquid crystal layer 3. However, according to an exemplary embodiment, the insulating layer 180 can be omitted.

[0070] The insulating layer 180 and the color filter 230 include an opening 185 that exposes the drain electrode 175. The first electrode 191 is physically connected and electrically connected to the drain electrode 175 through the opening 185, thereby receiving a data voltage from the drain electrode 175.

[0071] The first electrode 191 may include a transparent conductor such as ITO or IZO.

[0072] The first electrode 191 may include a main portion 192 extending along the second direction DR2 and a minute branch portion 193 extending from the main portion 192. The edge of the minute branch portion 193 may be connected by an outer portion 194. The first electrode 191 includes a protrusion 195 that overlaps with an extension 177 of the drain electrode 175, and may be connected to the extension 177 of the drain electrode 175 in the protrusion 195.

[0073] The first electrode 191 may further include a shielding portion 196 extending parallel to the first direction DR1. The shielding portion 196 may be disposed between the storage electrode line 131 and the gate line 121, and may be connected to the protrusion 195. According to an exemplary embodiment, the shielding portion 196 may be omitted.

[0074] A portion of the minute branch portion 193 of the first electrode 191 may not be connected to the external portion 194. Furthermore, the protruding portion 195 and the main portion 192 of the first electrode 191 may be separated from each other. This is a structure used to improve the alignment of the liquid crystal at the edge of the first electrode 191.

[0075] The first electrode 191 can be a pixel electrode and can receive pixel voltage from the drain electrode 175.

[0076] A spacer 310 is provided on the first electrode 191. Since the spacer 310 can be provided while filling the recessed space due to the opening 185 formed in the color filter 230 and the insulating layer 180, misalignment of the liquid crystal caused by the step created by the opening 185 can be prevented in the region near the opening 185.

[0077] Figure 4 This is a simplified view of the orientation of the liquid crystal molecules 31 when the spacer 310 does not fill the opening 185.Figures 4 to 6 For better understanding and ease of description, only a few constituent elements are briefly shown in the diagram.

[0078] Reference Figure 4 The orientation of the liquid crystal molecules 31 is changed due to the tilted portion of the opening 185. Figure 4 In the diagram, an arrow can be used to indicate a change in orientation.

[0079] Figure 5 This is a view showing the orientation of the liquid crystal molecules 31 when the spacer 310 fills the opening 185 according to this exemplary embodiment. Figure 5 As shown, when the spacer 310 fills the empty space of the opening 185 (specifically, the inclined portion of the opening 185), the liquid crystal molecules 31 can be uniformly oriented overall. That is, in this exemplary embodiment, it can be confirmed that the liquid crystal molecules 31 are oriented in the same direction.

[0080] Figure 6 This is a view illustrating the principle of light leakage when misalignment occurs between the upper and lower substrates. Figure 6 In the diagram, the opening of the light-blocking layer 220 is indicated by dashed lines. For example... Figure 6 As shown, when the position of the opening in the light-blocking layer 220 shifts due to misalignment between the lower and upper panels, as... Figure 6 As shown, spacer 310 may be exposed. However, spacer 310 cannot use organic materials to block light, so light leakage occurs in the exposed area.

[0081] However, refer to Figures 1 to 3 In the display device according to this exemplary embodiment, the extension 177 of the drain electrode 175 extends in the first direction DR1. Therefore, even when misalignment occurs between the upper substrate and the lower substrate, light leakage can be prevented by the extension 177 of the drain electrode 175, thus effectively preventing light leakage. That is, as... Figure 1 and Figure 2 As confirmed in the study, one edge of the extension 177 of the drain electrode 175 in the first direction DR1 can be configured to be closer to one edge of the light blocking layer 220 than one edge of the spacer 310. The one edge of the spacer 310 is configured to be adjacent to the one edge of the extension 177 of the drain electrode 175 and the one edge of the light blocking layer 220. Even when misalignment occurs between the upper substrate and the lower substrate, the extension 177 of the drain electrode 175 blocks light, thereby preventing light leakage.

[0082] Reference Figure 1The width of the spacer 310 in the first direction DR1 may be similar to the width of the first electrode 191 in the first direction DR1. In this specification, the word "similar" means a difference of 20% or less.

[0083] Since the width of the spacer 310 in the first direction DR1 is similar to the width of the first electrode 191 in the first direction DR1, misalignment of most of the liquid crystal molecules 31 oriented on the first electrode 191 can be prevented. That is, the spacer 310 prevents the liquid crystal molecules 31 from aligning in opposite directions and can improve the display quality of the display device.

[0084] Next, refer to Figures 1 to 3 The second display panel 200 is described below. The second display panel 200 includes a light-blocking layer 220 disposed on a second substrate 210 made of transparent glass or plastic. The light-blocking layer 220 has an opening in the region overlapping with the first electrode 191 of the first display panel 100. Figure 1 The light blocking layer 220 is configured to overlap with the data line 171, the gate line 121, etc., but not with most of the first electrode 191.

[0085] Reference Figure 1 The distance t2 between the edge of the light blocking layer 220 that is adjacent to an edge of the first electrode 191 and extends parallel to the first direction DR1 and the edge of the spacer 310 that is parallel to the first direction DR1 can be 5 μm to 10 μm.

[0086] Next, a cover layer 250 is disposed on the light-blocking layer 220. According to an exemplary embodiment, the cover layer 250 may be omitted. Next, a second electrode 270 is disposed on the cover layer 250. The second electrode 270 may be a common electrode and may receive a common voltage.

[0087] The liquid crystal layer 3 includes liquid crystal molecules 31. The liquid crystal molecules 31 of the liquid crystal layer 3 are aligned by a voltage between the first electrode 191 and the second electrode 270, thereby displaying an image.

[0088] As described above, in the display device according to this exemplary embodiment, the extension 177 of the drain electrode 175 is configured to extend parallel to the first direction DR1, and one edge of the extension 177 of the drain electrode 175 extending parallel to the first direction DR1 is configured to be close to one edge of the light blocking layer 220 extending parallel to the first direction DR1. Therefore, even if the position of the opening of the light blocking layer 220 changes due to misalignment between the upper substrate and the lower substrate, light is blocked by the extension 177 of the drain electrode 175, and light leakage can be prevented.

[0089] Figure 7 It only shows according toFigure 1 A view showing a partial configuration of the storage electrode line 131 and the drain electrode 175 in an exemplary embodiment of a display device. (See also...) Figure 7 As shown, the extension 177 of the drain electrode 175 is configured to extend in the first direction DR1, and the separation distance t1 between the extension 177 of the drain electrode 175 and the data line 171 in the first direction DR1 can be from 1 μm to 10 μm. In this way, the storage electrode line 131 located in the area where the extension 177 of the drain electrode 175 and the data line 171 are separated can be cut for repair. (Refer to...) Figure 7 In the display device according to this exemplary embodiment, the protruding portion 131a of the storage electrode line 131 is completely covered by the extension 177 of the drain electrode 175. That is, the planar area of ​​the protruding portion 131a of the storage electrode line 131 is smaller than the planar area of ​​the extension 177 of the drain electrode 175. Therefore, even if the positions of the storage electrode line 131 and the protruding portion 131a change slightly during the manufacturing process, since they are still covered by the extension 177 of the drain electrode 175, the overlapping area of ​​the extension 177 of the drain electrode 175 and the protruding portion 131a of the storage electrode line 131 on the third-direction DR3 remains the same. The overlapping area of ​​the extension 177 of the drain electrode 175 and the protruding portion 131a of the storage electrode line 131 acts as a capacitor, thereby consistently maintaining the capacitance of the capacitor.

[0090] Figure 8 This illustrates a parallel between [the two] according to another exemplary embodiment. Figure 7 The view of the same area. (Refer to...) Figure 8 In this exemplary embodiment, the storage electrode line 131 may include a protruding portion 131a and a lateral portion 131c extending parallel to the first direction DR1, and in the plan view, the protruding portion 131a of the storage electrode line 131 is not completely covered by the extension 177 of the drain electrode 175. In this case, the overlapping area of ​​the protruding portion 131a of the storage electrode line 131 and the extension 177 of the drain electrode 175 may be changed due to alignment errors during the formation of the storage electrode line 131 or during the formation of the drain electrode 175. In this case, the reliability of the display device may be reduced due to the change in the capacitance of the display device. Furthermore, in Figure 8 In the exemplary embodiment, since the extension 177 of the drain electrode 175 does not extend along the first direction DR1 to a degree sufficient to prevent light leakage, light leakage may occur in the region between the drain electrode 175 and the data line 171.

[0091] However, referring again Figure 7In the display device according to this exemplary embodiment, the protruding portion 131a of the storage electrode line 131 is configured to be completely covered by the extension portion 177 of the drain electrode 175, and the extension portion 177 of the drain electrode 175 extends along the first direction DR1 to a degree sufficient to prevent light leakage. Therefore, even if misalignment occurs between the upper substrate and the lower substrate, light leakage can be prevented, and even if misalignment occurs during the formation of the storage electrode line 131 or the drain electrode 175, the capacitance of the display device can remain the same.

[0092] Next, a display device according to another exemplary embodiment of the present invention will be described. Figure 9 and Figure 10 This illustrates another exemplary embodiment of the concept according to the present invention. Figure 7 The view of the same area.

[0093] Reference Figure 9 Except that the extension 177 of the drain electrode 175 includes a second region 177b having a longer length in the first direction DR1 and a first region 177a having a shorter length in the first direction DR1, the display device according to this exemplary embodiment and the display device according to the exemplary embodiment are similar. Figure 7 The display device is the same as that in the exemplary embodiment. Detailed descriptions of the same constituent elements are omitted.

[0094] Reference Figure 9 According to this exemplary embodiment, the extension 177 of the drain electrode 175 of the display device includes a first region 177a and a second region 177b having different lengths in the first direction DR1. The length of the second region 177b in the first direction DR1 is longer than the length of the first region 177a in the first direction DR1, and the second region 177b is configured to be closer to the opening (not shown) of the light blocking layer than the first region 177a.

[0095] That is, the region adjacent to the opening of the light-blocking layer where light leakage may occur can have an increased length in the first direction DR1 to prevent light leakage, and the region overlapping the repair space with the storage electrode line 131 should have a shortened length in the first direction DR1 to ensure repair space. In this case, while ensuring sufficient repair space through the first region 177a, light leakage can be effectively prevented through the second region 177b.

[0096] Figure 10 This illustrates another exemplary embodiment of the concept according to the present invention. Figure 7 The view of the same area.

[0097] Reference Figure 10Except that the length of the extension 177 of the drain electrode 175 in the first direction DR1 differs on the upper and lower sides, the display device according to this exemplary embodiment is similar to that according to Figure 7 The display device is the same as that in the exemplary embodiment. Detailed descriptions of the same constituent elements are omitted.

[0098] Reference Figure 10 In the extension 177 of the drain electrode 175, the length d1 of the side adjacent to the opening (not shown) of the light-blocking layer is longer than the length d2 of the opposite side. Therefore, the planar shape of the extension 177 of the drain electrode 175 can be as follows: Figure 10 The trapezoid shown.

[0099] Therefore, since the length d1 of the side of the extension 177 of the drain electrode 175 adjacent to the opening (not shown) of the light blocking layer is longer than the length d2 of the side closer to the storage electrode line, sufficient repair space can be ensured while effectively preventing light leakage. That is, light leakage at the opening of the light blocking layer can be blocked by the longer side with length d1, and sufficient distance between the extension 177 of the drain electrode 175 and the data line 171 can be ensured by the shorter side with length d2, thereby ensuring repair space.

[0100] While the inventive concept has been described in conjunction with exemplary embodiments which are now considered to be actual exemplary embodiments, it will be understood that the inventive concept is not limited to the disclosed embodiments. Rather, the inventive concept is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A display device, wherein, The display device includes: First substrate; A gate line is disposed on the first substrate and extends parallel to a first direction; Storage electrode lines, wherein the storage electrode lines and the gate lines are disposed on the same layer; The data line is insulated from the gate line and the storage electrode line, and extends parallel to a second direction perpendicular to the first direction; A drain electrode, which is disposed on the same layer as the data line and includes an extension; A first electrode, which is electrically connected to the drain electrode; A spacer, wherein the spacer is disposed on the first electrode; A second substrate, the second substrate overlapping the first substrate; and A light-blocking layer is disposed on the second substrate and has an opening that exposes the first electrode. Wherein, the separation distance along the first direction between the extension of the drain electrode and the data line is 1 μm to 10 μm, and The extension is closer to the opening of the light-blocking layer in the second direction than the spacer.

2. The display device according to claim 1, wherein, The length of the extension of the drain electrode along the first direction is longer than the length of the extension of the drain electrode along the second direction.

3. The display device according to claim 1, wherein, The storage electrode line includes a transverse portion disposed parallel to the first direction and a protruding portion protruding from the transverse portion along the second direction, and the protruding portion of the storage electrode line is completely covered by the extension of the drain electrode.

4. The display device according to claim 1, wherein, The length of the spacer along the first direction is longer than the length of the extension of the drain electrode along the first direction.

5. The display device according to claim 1, wherein, The difference between the width of the first electrode along the first direction and the width of the spacer along the first direction is 20% or less.

6. The display device according to claim 1, wherein, The distance between one edge of the light-blocking layer extending parallel to the first direction and one edge of the spacer extending parallel to the first direction is 5 μm to 10 μm.

7. The display device according to claim 1, wherein, The distance between an edge of the light-blocking layer extending parallel to the first direction and an edge of the extension of the drain electrode extending parallel to the first direction is 10 μm or less.

8. The display device according to claim 1, wherein, One edge of the extension of the drain electrode, extending parallel to the first direction, is positioned closer to the opening of the light-blocking layer than one edge of the spacer extending along the first direction.

9. A display device, wherein, The display device includes: First substrate; A gate line is disposed on the first substrate and extends parallel to a first direction; Storage electrode lines, wherein the storage electrode lines and the gate lines are disposed on the same layer; The data line is insulated from the gate line and the storage electrode line, and extends parallel to a second direction perpendicular to the first direction; A drain electrode, which is disposed on the same layer as the data line and includes an extension; A first electrode, which is electrically connected to the drain electrode; A spacer, wherein the spacer is disposed on the first electrode; A second substrate, the second substrate overlapping the first substrate; and A light-blocking layer is disposed on the second substrate and has an opening that exposes the first electrode. The extension of the drain electrode includes a first region and a second region. The length of the first region along the first direction is shorter than the length of the second region along the first direction. The second region is closer to the opening of the light-blocking layer than the first region. The separation distance along the first direction between the first region of the extension of the drain electrode and the data line is 1 μm to 10 μm.

10. A display device, wherein, The display device includes: First substrate; A gate line is disposed on the first substrate and extends parallel to a first direction; Storage electrode lines, wherein the storage electrode lines and the gate lines are disposed on the same layer; The data line is insulated from the gate line and the storage electrode line, and extends parallel to a second direction perpendicular to the first direction; A drain electrode, which is disposed on the same layer as the data line and includes an extension; A first electrode, which is electrically connected to the drain electrode; A spacer, wherein the spacer is disposed on the first electrode; A second substrate, the second substrate overlapping the first substrate; and A light-blocking layer is disposed on the second substrate and has an opening that exposes the first electrode. The extension of the drain electrode includes a first edge and a second edge parallel to the first direction. The first edge is configured to be closer to the opening of the light blocking layer than the second edge, and the length of the first edge along the first direction is longer than the length of the second edge along the first direction.

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