Display Devices

Abstract

A display device is disclosed, comprising a display area extending in a first direction and a second direction, a first sub-pixel to a fourth sub-pixel, and a spacer. The first sub-pixel emits a first color light, and comprises a first side and a second side extending in a third direction inclined at a predetermined angle relative to the first direction, and a third side and a fourth side extending in a fourth direction perpendicular to the third direction. The second sub-pixel emits a second color light, and is disposed adjacent to the second side of the first sub-pixel in the fourth direction. The third sub-pixel emits a third color light, and is disposed adjacent to the fourth side of the first sub-pixel in the third direction. The fourth sub-pixel emits a first color light, and is disposed adjacent to the second sub-pixel and the third sub-pixel. The spacer is disposed between the first sub-pixel and the second sub-pixel, and between the third sub-pixel and the fourth sub-pixel.

Description

Technical Field

[0001] Exemplary embodiments of the inventive concept relate to a display apparatus, and more particularly, to a display apparatus for a vehicle capable of reducing external light reflection and improving an aperture ratio. Background Art

[0002] Lightweight, small and portable display devices are becoming more widely used. Cathode ray tube (CRT) display devices have been used in the past due to their performance and competitive price. However, CRT display devices have large size and low portability. Therefore, display devices such as plasma display devices, liquid crystal display devices and organic light emitting display devices have become more widely used due to their small size, light weight and low power consumption.

[0003] The display device may be implemented in a vehicle. When the display device is implemented in a vehicle, the environment in the vehicle may affect the display device. For example, when a user views the display device, external light reflection may cause visibility problems. Summary of the invention

[0004] Exemplary embodiments of the inventive concept provide a display apparatus for a vehicle capable of reducing external light reflection and improving an aperture ratio for display quality.

[0005] According to an exemplary embodiment of the inventive concept, a display device includes a display area extending in a first direction and a second direction, wherein the first direction is a horizontal direction and the second direction is perpendicular to the first direction. The display device also includes a first sub-pixel to a fourth sub-pixel. The first sub-pixel emits a first color light and includes a first side and a second side extending in a third direction inclined at a predetermined angle relative to the first direction and a third side and a fourth side extending in a fourth direction perpendicular to the third direction. The second sub-pixel emits a second color light and is disposed adjacent to the second side of the first sub-pixel in the fourth direction. The third sub-pixel emits a third color light and is disposed adjacent to the fourth side of the first sub-pixel in the third direction. The fourth sub-pixel emits a first color light and is disposed adjacent to the second sub-pixel and the third sub-pixel. The display device also includes a spacer, which maintains a cell gap and is disposed between the first sub-pixel and the second sub-pixel and between the third sub-pixel and the fourth sub-pixel, and the spacer extends in the third direction. The first sub-pixel to the fourth sub-pixel are disposed in the display area, and each of the first sub-pixel to the fourth sub-pixel corresponds to a light-emitting area.

[0006] In an exemplary embodiment, the first direction and the third direction form an angle of about 45 degrees, and the first sub-pixel has a diamond shape.

[0007] In an exemplary embodiment, the second sub-pixel and the third sub-pixel each have a quadrilateral shape having sides extending along the third direction and the fourth direction.

[0008] In an exemplary embodiment, a size of the first sub-pixel is larger than a size of at least one of the second sub-pixel and the third sub-pixel.

[0009] In an exemplary embodiment, the first color light is blue light, the second color light is green light, and the third color light is red light.

[0010] In an exemplary embodiment, a long side of the first green subpixel or the first red subpixel is adjacent to a first side of the first subpixel, and a short side of the second green subpixel and a short side of the second red subpixel are adjacent to a second side of the first subpixel.

[0011] In an exemplary embodiment, a spacing distance between the first sub-pixel and the second sub-pixel is greater than a spacing distance between the first sub-pixel and a closest adjacent sub-pixel adjacent to a first side of the first sub-pixel.

[0012] In an exemplary embodiment, the display device further includes a fifth sub-pixel emitting a third color light, the fifth sub-pixel being disposed adjacent to the second side of the first sub-pixel in the fourth direction. The fifth sub-pixel and the second sub-pixel are spaced apart from each other in the third direction, and a spacing distance between the first sub-pixel and the second sub-pixel is greater than a spacing distance between the first sub-pixel and the fifth sub-pixel.

[0013] In an exemplary embodiment, the display device further includes: a thin film transistor substrate including a plurality of thin film transistors; a plurality of pixel electrodes disposed on the thin film transistor substrate; a pixel defining layer disposed on the thin film transistor substrate and having an opening for exposing the pixel electrodes; and a sealing substrate facing the thin film transistor substrate. The spacer is formed by a protruding portion of the pixel defining layer.

[0014] In an exemplary embodiment, the protrusion opening is formed at a corner of the opening of the pixel defining layer in the first direction in an outward direction of the opening.

[0015] According to an exemplary embodiment of the inventive concept, a display device includes: a thin film transistor substrate extending in a first direction as a horizontal direction and a second direction perpendicular to the first direction; a pixel electrode disposed on the thin film transistor substrate; and a pixel defining layer disposed on the thin film transistor substrate and having an opening that exposes a portion of the pixel electrode. The opening of the pixel defining layer includes an edge extending along a third direction inclined at a predetermined angle relative to the first direction and an edge extending along a fourth direction perpendicular to the third direction. The protruding opening is formed at a corner of the opening of the pixel defining layer in the first direction in an outward direction of the opening.

[0016] In an exemplary embodiment, the protrusion is formed at a corner of the pixel electrode in the first direction at a position corresponding to the protruding opening of the opening of the pixel defining layer.

[0017] In an exemplary embodiment, the protruding opening of the opening of the pixel defining layer has a curved shape.

[0018] In an exemplary embodiment, a top end of the protruding opening of the opening of the pixel defining layer has an angle less than about 90 degrees.

[0019] In an exemplary embodiment, the pixel electrode has a rectangular shape or a square shape.

[0020] In an exemplary embodiment, the display device further includes a light emitting layer disposed on the pixel electrode and a counter electrode disposed on the light emitting layer.

[0021] In an exemplary embodiment, the opening of the pixel defining layer defines a plurality of sub-pixels, each of the plurality of sub-pixels is a light emitting region, and the plurality of sub-pixels include a first sub-pixel to a fourth sub-pixel. The first sub-pixel emits a first color light and includes a first side and a second side extending in a third direction and a third side and a fourth side extending in a fourth direction. The second sub-pixel emits a second color light and is disposed adjacent to the second side of the first sub-pixel in the fourth direction. The third sub-pixel emits a third color light and is disposed adjacent to the fourth side of the first sub-pixel in the third direction. The fourth sub-pixel emits a first color light and is disposed adjacent to the second sub-pixel and the third sub-pixel.

[0022] In an exemplary embodiment, the display device further includes a sealing substrate facing the thin film transistor substrate and a spacer, the spacer maintains a cell gap and is disposed between the thin film transistor substrate and the sealing substrate, between the first sub-pixel and the second sub-pixel, and between the third sub-pixel and the fourth sub-pixel, the spacer extending in a third direction.

[0023] In an exemplary embodiment, a size of the first sub-pixel is larger than a size of at least one of the second sub-pixel and the third sub-pixel.

[0024] In an exemplary embodiment, the first direction and the third direction form an angle of about 45 degrees, and the opening of the pixel defining layer has a diamond shape or a rectangular shape inclined with respect to the first direction and the second direction.

[0025] According to an exemplary embodiment of the inventive concept, a display device includes a plurality of sub-pixels arranged in a display area, the display area extending in a first direction as a horizontal direction and in a second direction perpendicular to the first direction. Each of the sub-pixels corresponds to a light emitting area. The display device includes a first sub-pixel, the first sub-pixel emits a first color light and includes a first side and a second side extending in a third direction inclined at a predetermined angle relative to the first direction and a third side and a fourth side extending in a fourth direction perpendicular to the third direction. The display device also includes: a second sub-pixel, emitting a second color light, and arranged adjacent to the second side of the first sub-pixel in the fourth direction; a third sub-pixel, emitting a third color light, and arranged adjacent to the fourth side of the first sub-pixel in the third direction; and a fourth sub-pixel, emitting a first color light, and arranged adjacent to the second sub-pixel and the third sub-pixel. The display device also includes a spacer for maintaining a cell gap, the spacer being arranged between the first sub-pixel and the second sub-pixel and between the third sub-pixel and the fourth sub-pixel and extending in the third direction. The protrusion may be formed at a corner of the sub-pixel in the first direction.

[0026] The display device includes appropriately arranged sub-pixels and spacers to achieve a high aperture ratio structure. Since protrusions are formed at corners of the sub-pixels to reduce reflection of external light, a display device suitable for a vehicle display device can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other features of the inventive concept will become more apparent by describing in detail exemplary embodiments of the inventive concept with reference to the attached drawings.

[0028] Figure 1 is a view for explaining reflection of external light when a display apparatus according to an exemplary embodiment of the inventive concept is used in a vehicle.

[0029] Figure 2 It is shown Figure 1 FIG. 1 is a diagram of a first display device and a second display device of a display device.

[0030] Figure 3 is a diagram showing an exemplary embodiment according to the inventive concept Figure 2 A plan view of a sub-pixel arrangement of a display device.

[0031] Figure 4 is a diagram showing in detail an exemplary embodiment according to the inventive concept Figure 3 A partially enlarged view of the periphery of a fourth spacer of a display device.

[0032] Figure 5 According to an exemplary embodiment of the inventive concept Figure 4 A cross-sectional view taken along line II'.

[0033] Figure 6 is a plan view illustrating a sub-pixel arrangement of a display device according to an exemplary embodiment of the inventive concept.

[0034] Figure 7 is a diagram showing in detail an exemplary embodiment according to the inventive concept Figure 6 A partial enlarged view of a corner of a sub-pixel of a display device.

[0035] Figure 8 is a diagram showing an exemplary embodiment according to the inventive concept Figure 6 A cross-sectional view of a portion of a display device corresponding to a third blue sub-pixel.

[0036] Fig. 9A , Fig. 9B and Fig. 9C is a partially enlarged view illustrating in detail one corner of one sub-pixel of a display device according to an exemplary embodiment of the inventive concept.

[0037] Fig. 10A and Fig. 10B are a plan view and a cross-sectional view illustrating external light reflection of one sub-pixel of a display device according to a comparative example.

[0038] Fig.11A and Fig. 11B are a plan view and a cross-sectional view illustrating reflection of external light of one sub-pixel of a display device according to another comparative example.

[0039] Fig.12 is a block diagram illustrating an electronic device according to an exemplary embodiment of the inventive concept. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the inventive concept will be described more fully hereinafter with reference to the accompanying drawings.Like reference numerals may refer to like elements throughout the drawings.

[0041] It will be understood that the terms "first", "second", "third", etc. are used herein to distinguish one element from another element, and the elements are not limited by these terms. Therefore, the "first" element in an exemplary embodiment may be described as the "second" element in another exemplary embodiment.

[0042] It should be understood that descriptions of features or aspects within each exemplary embodiment should typically be considered as available for other similar features or aspects in other exemplary embodiments, unless the context clearly dictates otherwise.

[0043] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0044] It will be understood that when a component such as a film, region, layer, or element is referred to as being "on," "connected to," "bound to," or "adjacent to" another component, the component may be directly on, directly connected to, directly bound to, or directly adjacent to the other component, or there may be intervening components. It will also be understood that when a component is referred to as being "between" two components, the component may be the only component between the two components, or there may also be one or more intervening components. It will also be understood that when a component is referred to as "overlying" another component, the component may be the only component that overlies the other component, or one or more intervening components may also overlie the other component. Other words used to describe relationships between elements should be interpreted in a similar manner.

[0045] Here, when an element, such as a sub-pixel by way of example, is described as having long side(s) and short side(s), it will be understood that the lengths of the sides of the element are described relative to each other.

[0046] Figure 1 is a view for explaining reflection of external light when a display apparatus according to an exemplary embodiment of the inventive concept is used in a vehicle. Figure 2 It is shown Figure 1 FIG. 5 is a diagram of a first display device DS1 and a second display device DS2 of a display device.

[0047] Reference Figure 1 and Figure 2 In an exemplary embodiment, the display device may be disposed inside a vehicle and may display various vehicle information or contents related to driving of the vehicle to passengers inside the vehicle.

[0048] For example, the display device may include a first display device DS1 and a second display device DS2. The first display device DS1 may be disposed in a center fascia region and may display, for example, an image received from a rear camera (e.g., an image provided for reverse driving or parking) or a variety of other vehicle-related content. The second display device DS2 may be disposed in a dashboard region and may display various vehicle information related to vehicle driving.

[0049] The first display device DS1 and the second display device DS2 may be disposed in a display area extending along a first direction D1 being a horizontal direction and a second direction D2 perpendicular to the first direction D1. The first display device DS1 and the second display device DS2 may include a plurality of sub-pixels each corresponding to a light emitting area.

[0050] Due to the environment in which the display device for the vehicle is used, the display device is expected to have high brightness characteristics and a high aperture ratio structure. However, when the passenger views the display device, external light reflection for various reasons may cause visibility problems. For example, sunlight SN incident into the vehicle may be reflected by the display device and perceived by the passenger's field of view EYE. Specifically, light incident through the window of the vehicle in the horizontal direction may be reflected from the display device and travel to the passenger's field of view EYE, causing visibility problems.

[0051] According to an exemplary embodiment, as described below, a display device for a vehicle having a high aperture ratio structure and reducing external light reflection factors can be provided. Although it is described herein that the display device according to the exemplary embodiment can be used in a vehicle, it will be understood that the display device according to the exemplary embodiment is not limited to being used in a vehicle.

[0052] Figure 3 is a diagram showing an exemplary embodiment according to the inventive concept Figure 2 A plan view of a sub-pixel arrangement of a display device. Figure 4 is a diagram showing in detail an exemplary embodiment according to the inventive concept Figure 3 A partially enlarged view of the periphery of a fourth spacer of a display device.

[0053] Reference Figure 3 and Figure 4 In an exemplary embodiment, the display device may include a plurality of sub-pixels disposed in a display area, the display area extending along a first direction D1 as a horizontal direction and a second direction D2 perpendicular to the first direction D1. Each of the sub-pixels corresponds to a light emitting area.

[0054] The sub-pixels may include a plurality of blue sub-pixels, a plurality of red sub-pixels, and a plurality of green sub-pixels.

[0055] For example, the first blue sub-pixel B1, the second blue sub-pixel B2, the third blue sub-pixel B3 and the fourth blue sub-pixel B4 may be arranged in a matrix along the first direction D1 and the second direction D2. The first blue sub-pixel B1, the second blue sub-pixel B2, the third blue sub-pixel B3 and the fourth blue sub-pixel B4 may emit blue light.

[0056] The first red subpixel R1, the second red subpixel R2, the third red subpixel R3 and the fourth red subpixel R4 may be arranged in a matrix along the first direction D1 and the second direction D2 and may emit red light.

[0057] The first green subpixel G1, the second green subpixel G2, the third green subpixel G3 and the fourth green subpixel G4 may be arranged in a matrix along the first direction D1 and the second direction D2 and may emit green light.

[0058] The first spacer SP1, the second spacer SP2, the third spacer SP3, and the fourth spacer SP4 may be arranged in a matrix along the first direction D1 and the second direction D2. The first spacer SP1, the second spacer SP2, the third spacer SP3, and the fourth spacer SP4 may be used to maintain the thin film transistor substrate (see Figure 5 100) and the sealing substrate (see Figure 5 The structure of the cell gap between 200).

[0059] The first blue sub-pixel B1, the first red sub-pixel R1, and the first green sub-pixel G1 may form a first unit pixel. The second blue sub-pixel B2, the second red sub-pixel R2, and the second green sub-pixel G2 may form a second unit pixel. The third blue sub-pixel B3, the third red sub-pixel R3, and the third green sub-pixel G3 may form a third unit pixel. The fourth blue sub-pixel B4, the fourth red sub-pixel R4, and the fourth green sub-pixel G4 may form a fourth unit pixel.

[0060] Therefore, each of the unit pixels may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Figure 3 As shown in , the first unit pixel is arranged in the first row RW1 and the first column CL1. The second unit pixel is arranged in the first row RW1 and the second column CL2. The third unit pixel is arranged in the second row RW2 and the first column CL1. The fourth unit pixel is arranged in the second row RW2 and the second column CL2. Therefore, the first to fourth unit pixels can be arranged in a matrix form along the first direction D1 and the second direction D2.

[0061] For example, one red sub-pixel, one green sub-pixel, one blue sub-pixel, and one spacer may be disposed in one row and one column divided by each unit pixel.

[0062] The third blue sub-pixel B3 may include a first side extending along a third direction D3 inclined at a predetermined angle relative to the first direction D1, a second side B3b facing the first side, a third side extending along a fourth direction D4 perpendicular to the third direction D3, and a fourth side B3c facing the third side. Therefore, similar to the first side, the second side B3b may extend along the third direction D3, and similar to the third side, the fourth side B3c may extend along the fourth direction D4. The third blue sub-pixel B3 may have a rhombus shape.

[0063] The second green subpixel G2 may be disposed adjacent to the second side B3b of the third blue subpixel B3 in the fourth direction D4. The second green subpixel G2 may have a quadrilateral shape having sides extending along the third direction D3 and the fourth direction D4.

[0064] The fourth red subpixel R4 may be disposed adjacent to the fourth side B3c of the third blue subpixel B3 in the third direction D3. The fourth red subpixel R4 may have a quadrilateral shape having sides extending along the third direction D3 and the fourth direction D4.

[0065] The fourth blue sub-pixel B4 may be disposed adjacent to the second green sub-pixel G2 in the third direction D3 , and adjacent to the fourth red sub-pixel R4 in the fourth direction D4 .

[0066] The fourth spacer SP4 may be disposed between the third blue sub-pixel B3 and the second green sub-pixel G2 and between the fourth red sub-pixel R4 and the fourth blue sub-pixel B4, and may extend along the third direction D3. The fourth spacer SP4 may include two short sides SP4c and SP4d opposite to each other and two long sides SP4a and SP4b opposite to each other. The first long side SP4a of the fourth spacer SP4 may be directly adjacent to the second side B3b of the third blue sub-pixel B3 and directly adjacent to the short side R4b of the fourth red sub-pixel R4. The second long side SP4b of the fourth spacer SP4 opposite to the first long side SP4a may be directly adjacent to the short side G2a of the second green sub-pixel G2 and directly adjacent to the side B4a of the fourth blue sub-pixel B4. The side B4a of the fourth blue sub-pixel B4 may be opposite to the short side R4b of the fourth red sub-pixel R4 and the short side G4b of the fourth green sub-pixel G4 in the fourth direction D4.

[0067] Here, the first direction D1 and the third direction D3 may form an angle of about 45 degrees. Each of the first to fourth blue sub-pixels B1, B2, B3, and B4 may have a rhombus shape.

[0068] The first red sub-pixel R1 and the first green sub-pixel G1 may each have an inclined rectangular shape including long sides extending along the third direction D3 and short sides extending along the fourth direction D4 .

[0069] The second red subpixel R2 , the second green subpixel G2 , the fourth red subpixel R4 , and the fourth green subpixel G4 may each have an inclined rectangular shape including short sides extending along the third direction D3 and long sides extending along the fourth direction D4 .

[0070] Here, the first red sub-pixel R1, the first green sub-pixel G1, and the first blue sub-pixel B1 of the first unit pixel may be arranged diagonally along the fourth direction D4. For example, the first red sub-pixel R1, the first green sub-pixel G1, and the first blue sub-pixel B1 of the first unit pixel may be adjacent to each other along the fourth direction D4. The third red sub-pixel R3, the third green sub-pixel G3, and the third blue sub-pixel B3 of the third unit pixel may be arranged diagonally along the fourth direction D4. For example, the third red sub-pixel R3, the third green sub-pixel G3, and the third blue sub-pixel B3 of the third unit pixel may be adjacent to each other along the fourth direction D4. The second red sub-pixel R2 and the second green sub-pixel G2 of the second unit pixel may be arranged along the third direction D3. For example, the second red sub-pixel R2 and the second green sub-pixel G2 of the second unit pixel may be adjacent to each other along the third direction D3. The second blue sub-pixel B2 may be arranged along the fourth direction D4 with the second red sub-pixel R2 and the second green sub-pixel G2. For example, the second blue sub-pixel B2 may be adjacent to the second red sub-pixel R2 and the second green sub-pixel G2 in the fourth direction D4. The fourth red sub-pixel R4 and the fourth green sub-pixel G4 of the fourth unit pixel may be arranged along the third direction D3. For example, the fourth red sub-pixel R4 and the fourth green sub-pixel G4 of the fourth unit pixel may be adjacent to each other along the third direction D3. The fourth blue sub-pixel B4 may be arranged along the fourth direction D4 with the fourth red sub-pixel R4 and the fourth green sub-pixel G4. For example, the fourth blue sub-pixel B4 may be adjacent to the fourth red sub-pixel R4 and the fourth green sub-pixel G4 in the fourth direction D4.

[0071] In an exemplary embodiment, the size of each of the first to fourth blue sub-pixels B1, B2, B3, and B4 may be larger than the size of each of the first to fourth red sub-pixels R1, R2, R3, and R4, and may be larger than the size of each of the first to fourth green sub-pixels G1, G2, G3, and G4. In an exemplary embodiment, the size of each of the first to fourth red sub-pixels R1, R2, R3, and R4 may be substantially the same as the size of each of the first to fourth green sub-pixels G1, G2, G3, and G4. In an exemplary embodiment, the size of each of the first to fourth blue sub-pixels B1, B2, B3, and B4 may be approximately twice as large as the size of each of the first to fourth red sub-pixels R1, R2, R3, and R4, and approximately twice as large as the size of each of the first to fourth green sub-pixels G1, G2, G3, and G4.

[0072] The long side of the green subpixel or the red subpixel is adjacent to the first side of the third blue subpixel B3. The short side of the green subpixel (e.g., the second green subpixel G2) and the short side of the red subpixel (e.g., the second red subpixel R2) are adjacent to the second side B3b of the third blue subpixel B3. Figure 4 As shown in , the short side G2a of the second green sub-pixel G2 and the short side R2a of the second red sub-pixel R2 are adjacent to the second side B3b of the third blue sub-pixel B3. For example, the short side G2a of the second green sub-pixel G2 and the short side R2a of the second red sub-pixel R2 may be opposite to the second side B3b of the third blue sub-pixel B3 in the fourth direction D4. For example, the short side G2a of the second green sub-pixel G2 and the short side R2a of the second red sub-pixel R2 may be parallel to the second side B3b of the third blue sub-pixel B3 in the third direction D3.

[0073] In this case, the spacing distance between the third blue sub-pixel B3 and the second green sub-pixel G2 may be greater than the spacing distance between the third blue sub-pixel B3 and the closest adjacent sub-pixel (e.g., the third green sub-pixel G3) adjacent to the first side of the third blue sub-pixel B3. Here, "closest adjacent" refers to the sub-pixel that is closest to (or closest to) the first side of the third blue sub-pixel B3 in the fourth direction D4 among all sub-pixels. In addition, the spacing distance between the third blue sub-pixel B3 and the second green sub-pixel G2 may be greater than the spacing distance between the third blue sub-pixel B3 and the second red sub-pixel R2.

[0074] According to an exemplary embodiment, the result of this construction is to ensure sufficient space for the setting of the fourth spacer SP4 between the third blue sub-pixel B3 and the second green sub-pixel G2 and between the fourth red sub-pixel R4 and the fourth blue sub-pixel B4, and allow the size of each sub-pixel to be increased / maximized to ensure sufficient aperture ratio.

[0075] In addition, in the first red sub-pixel R1 and the first green sub-pixel G1, the first red sub-pixel R1 is shifted to the upper left side relative to the fourth direction D4 (for example, relative to the third spacer SP3). In the second red sub-pixel R2 and the second green sub-pixel G2, the second red sub-pixel R2 is shifted to the lower left side relative to the third direction D3 (for example, relative to the second spacer SP2). Therefore, the misalignment between the first red sub-pixel R1 and the second red sub-pixel R2 in the second direction D2 can be reduced / minimized, thereby improving the perceptual characteristics of the display device when viewed by a user.

[0076] Figure 5 According to an exemplary embodiment of the inventive concept Figure 4 A cross-sectional view taken along line II'.

[0077] Reference Figure 5 , the display device may include a thin film transistor substrate 100, a plurality of pixel electrodes B3PE and G2PE, a pixel defining layer PDL, light emitting layers B3EL and G2EL, a counter electrode CE, a sealing member 150, and a sealing substrate 200. Referring to Figure 3 , Figure 4 and Figure 5 , the thin film transistor substrate 100 may extend in the first direction D1 and the second direction D2.

[0078] The thin film transistor substrate 100 may include a plurality of thin film transistors.

[0079] The pixel electrodes B3PE and G2PE may be disposed on the thin film transistor substrate 100 .

[0080] The pixel defining layer PDL may be disposed on the thin film transistor substrate 100 on which the pixel electrodes B3PE and G2PE are disposed. An opening for exposing the pixel electrodes B3PE and G2PE may be formed in the pixel defining layer PDL. The pixel defining layer PDL may cover a portion of an edge of the pixel electrodes B3PE and G2PE. For example, the pixel defining layer PDL may cover the side surface (or end surface) of the pixel electrodes B3PE and G2PE, and may cover a portion of the upper surface of the pixel electrodes B3PE and G2PE.

[0081] The light emitting layers B3EL and G2EL may be disposed on the pixel electrodes B3PE and G2PE in the openings of the pixel defining layer PDL.

[0082] The counter electrode CE may be disposed on the light emitting layers B3EL, G2EL and the pixel defining layer PDL.

[0083] The sealing substrate 200 may face the thin film transistor substrate 100. The sealing substrate 200 may seal the light emitting structure formed of the pixel electrodes B3PE and G2PE, the light emitting layers B3EL and G2EL, and the counter electrode CE together with the sealing member 150.

[0084] Here, a portion of the pixel defining layer PDL may protrude to form a spacer SP4 . The spacer SP4 may maintain a cell gap between the sealing substrate 200 and the thin film transistor substrate 100 .

[0085] In an exemplary embodiment, the sealing member 150 and the sealing substrate 200 may be replaced with a thin film encapsulation layer. The thin film encapsulation layer may prevent moisture and oxygen from penetrating from the outside. The thin film encapsulation layer may include, for example, at least one organic layer and at least one inorganic layer. At least one organic layer and at least one inorganic layer may be alternately stacked with each other. For example, the thin film encapsulation layer may include a first inorganic layer, a second inorganic layer, and an organic layer disposed between the first inorganic layer and the second inorganic layer. However, the thin film encapsulation layer is not limited thereto.

[0086] Figure 6 is a plan view illustrating a sub-pixel arrangement of a display device according to an exemplary embodiment of the inventive concept. Figure 7 is a diagram showing in detail an exemplary embodiment according to the inventive concept Figure 6 A partial enlarged view of a corner of a sub-pixel of a display device.

[0087] Reference Figure 6 , the display device may include a first blue sub-pixel B1, a second blue sub-pixel B2, a third blue sub-pixel B3, and a fourth blue sub-pixel B4 arranged in a matrix form in a first direction D1 and a second direction D2.

[0088] The display device may further include first, second, third, and fourth red sub-pixels R1, R2, R3, and R4 arranged in a matrix form in the first and second directions D1 and D2.

[0089] The display device may further include first, second, third, and fourth green sub-pixels G1, G2, G3, and G4 arranged in a matrix form in the first and second directions D1 and D2.

[0090] The first to fourth blue sub-pixels B1, B2, B3 and B4, the first to fourth red sub-pixels R1, R2, R3 and R4, and the first to fourth green sub-pixels G1, G2, G3 and G4 are arranged in the same manner as Figure 3 The arrangement of sub-pixels of the display device is substantially the same. Therefore, for ease of description, a more detailed description of previously described elements and aspects may be omitted.

[0091] Reference Figure 7 In an exemplary embodiment, the protruding opening PT may be formed at a corner of each of the sub-pixels defined by the opening OP of the pixel defining layer PDL in the first direction D1. In an exemplary embodiment, the protruding opening PT may be formed at two corners of each of the sub-pixels. However, the exemplary embodiment is not limited thereto. In an exemplary embodiment, the opening OP of the pixel defining layer PDL may have a rhombus shape or an inclined rectangular shape (for example, a rectangular shape inclined relative to the first direction D1 and the second direction D2, such as Figure 6 ).

[0092] For example, the opening OP of the pixel defining layer PDL may have a side extending along a third direction D3 inclined at a predetermined angle relative to the first direction D1 and a side extending along a fourth direction D4 perpendicular to the third direction D3. The protruding opening PT may be formed at a corner of the opening OP of the pixel defining layer PDL in the first direction D1 in an outward direction of the opening OP.

[0093] The protrusion may be formed at a corner of the pixel electrode PE in the first direction D1 at a position corresponding to the protrusion opening PT of the opening OP of the pixel defining layer PDL. The pixel electrode PE may have a rectangular shape or a square shape.

[0094] The top end of the protrusion opening PT of the opening OP of the pixel defining layer PDL may form an acute angle having an angle θ less than about 90 degrees. For example, the acute angle may be about 45 degrees.

[0095] Figure 8 is a diagram showing an exemplary embodiment according to the inventive concept Figure 6 A cross-sectional view of a portion corresponding to a third blue sub-pixel B3 of a display device.

[0096] The display device may include a thin film transistor substrate 100 , a pixel electrode B3PE, a pixel defining layer PDL, a light emitting layer B3EL, a counter electrode CE, and a sealing member 300 .

[0097] The thin film transistor substrate 100 may include a plurality of thin film transistors.

[0098] The pixel electrode B3PE may be disposed on the thin film transistor substrate 100 .

[0099] The pixel defining layer PDL may be disposed on the thin film transistor substrate 100 on which the pixel electrode B3PE is disposed. An opening exposing the pixel electrode B3PE may be formed in the pixel defining layer PDL. The pixel defining layer PDL may cover a portion of an edge of the pixel electrode B3PE.

[0100] The light emitting layer B3EL may be disposed on the pixel electrode B3PE in the opening of the pixel defining layer PDL.

[0101] The counter electrode CE may be disposed on the light emitting layer B3EL and the pixel defining layer PDL.

[0102] In an exemplary embodiment, the sealing part 300 may be a sealing member and a sealing substrate. In an exemplary embodiment, the sealing part 300 may be a thin film encapsulation layer. The thin film encapsulation layer may prevent moisture and oxygen from penetrating from the outside. The thin film encapsulation layer may include, for example, at least one organic layer and at least one inorganic layer. At least one organic layer and at least one inorganic layer may be alternately stacked with each other. For example, the thin film encapsulation layer may include a first inorganic layer, a second inorganic layer, and an organic layer disposed between the first inorganic layer and the second inorganic layer. However, exemplary embodiments are not limited thereto.

[0103] Fig. 9A , Fig. 9B and Fig. 9C is a partially enlarged view illustrating in detail one corner of one sub-pixel of a display device according to an exemplary embodiment of the inventive concept.

[0104] Reference Fig. 9A , Fig. 9B and Fig. 9C , the protruding opening PT of the opening OP of the pixel defining layer PDL may have various shapes. The protruding opening PT may protrude in a direction inclined at a predetermined angle relative to the first direction D1 or may have a curved shape. However, exemplary embodiments are not limited thereto. For example, the protruding opening PT of the opening OP of the pixel defining layer PDL may have various shapes in which the side formed along the second direction D2 is reduced / minimized.

[0105] Fig. 10A and Fig. 10B are a plan view and a cross-sectional view illustrating external light reflection of one sub-pixel of a display device according to a comparative example. Fig. 10B It is along Fig. 10A A cross-sectional view taken along line II'. Fig.11A and Fig. 11B are a plan view and a cross-sectional view illustrating reflection of external light of one sub-pixel of a display device according to another comparative example. Fig. 11B It is along Fig.11A A cross-sectional view taken along line II'.

[0106] Reference Fig. 10A and Fig. 10B The display device may include a thin film transistor substrate 100, a pixel electrode PE, a pixel defining layer PDL, a light emitting layer EL, a counter electrode CE and a sealing member 300. For ease of explanation, further description of elements and technical aspects is omitted here.

[0107] Still refer to Fig. 10A and Fig. 10B, it can be seen that external light reflection mainly occurs on the inclined surface of the pixel defining layer PDL having the opening. For example, reflection may occur at the edge of the opening of the pixel defining layer PDL extending in the second direction D2, and such reflection may be recognized by the user (see Figure 1 ).

[0108] Reference Fig.11A and Fig. 11B The display device may include a thin film transistor substrate 100, a pixel electrode PE, a pixel defining layer PDL, a light emitting layer EL, a counter electrode CE and a sealing member 300. For ease of explanation, further description of elements and technical aspects is omitted here.

[0109] Still refer to Fig.11A and Fig. 11B , the shape of the opening of the pixel defining layer PDL may be a rhombus shape, which may reduce the length of the side extending along the second direction D2 of the opening, thereby reducing external light reflection. However, the portion extending along the second direction D2 may be formed at the corner of the opening in the first direction D1, and the reflection of external light in the portion may be visually recognized by the user.

[0110] Compared with the comparative example described above, in the exemplary embodiment, according to Figures 6 to 9C In the structure of the display device shown in FIG. 1 , a protruding opening PT of the opening OP in an outward direction is formed at a corner of the opening OP in the first direction D1 , thereby reducing / minimizing reflection of external light at the corner.

[0111] Fig.12 is a block diagram illustrating an electronic device according to an exemplary embodiment.

[0112] Reference Fig.12 , the electronic device 500 may include a processor 510, a memory device 520, a storage device 530, an input / output (I / O) device 540, a power supply 550, and a display device 560. Here, the display device 560 may be connected to Figure 1 The electronic device 500 may correspond to a display device. In addition, the electronic device 500 may further include a plurality of ports for communicating with, for example, a video card, a sound card, a memory card, a universal serial bus (USB) device, or other electronic devices. According to an exemplary embodiment, the electronic device 500 may be, for example, a television, a cellular phone (such as a smart phone), a smart watch, a tablet PC, a car navigation system, a computer monitor, a laptop computer, a head mounted display (HMD), etc. However, the electronic device 500 is not limited thereto.

[0113] The processor 510 may perform various computing functions. The processor 510 may be, for example, a microprocessor, a central processing unit (CPU), an application processor (AP), etc. The processor 510 may be coupled to other components via an address bus, a control bus, a data bus, etc. In addition, the processor 510 may be coupled to an expansion bus such as a peripheral component interconnect (PCI) bus. The memory device 520 may store data for the operation of the electronic device 500. For example, the memory device 520 may include at least one non-volatile memory device (such as an erasable programmable read-only memory (EPROM) device, an electrically erasable programmable read-only memory (EEPROM) device, a flash memory device, a phase change random access memory (PRAM) device, a resistive random access memory (RRAM) device, a nano floating gate memory (NFGM) device, a polymer random access memory (PoRAM) device, a magnetic random access memory (MRAM) device, a ferroelectric random access memory (FRAM) device, etc.) and / or at least one volatile memory device (such as a dynamic random access memory (DRAM) device, a static random access memory (SRAM) device, a mobile DRAM device, etc.). The storage device 530 may include, for example, a solid state drive (SSD) device, a hard disk drive (HDD) device, a CD-ROM device, etc. The I / O device 540 may include, for example, an input device (such as a keyboard, a keypad, a mouse device, a touch pad, a touch screen, etc.) and an output device (such as a printer, a speaker, etc.). The power supply 550 may provide power for the operation of the electronic device 500.

[0114] The display device 560 may be coupled to other components via a bus or other communication link. In an exemplary embodiment, the display device 560 may be included in the I / O device 540. As described above, the display device 560 includes appropriately arranged sub-pixels and spacers to achieve a high aperture ratio structure. Since in an exemplary embodiment, protrusions are formed at the corners of the sub-pixels to reduce reflection of external light, a display device suitable for a vehicle display device can be provided.

[0115] The exemplary embodiments of the inventive concept can be applied to organic light-emitting display devices and various electronic devices including organic light-emitting display devices. For example, the exemplary embodiments can be applied to mobile phones, smart phones, smart watches, tablet PCs, car navigation systems, televisions, computer monitors, notebook computers, etc.

[0116] While the inventive concept has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the inventive concept as defined by the claims.

Claims

1. A display device, comprising: A display area extending in a first direction and a second direction, Wherein, the first direction is a horizontal direction, and the second direction is perpendicular to the first direction; A first subpixel, emitting a first color light, comprising a first side and a second side extending in a third direction inclined at a predetermined angle relative to the first direction, and a third side and a fourth side extending in a fourth direction perpendicular to the third direction; a second sub-pixel, emitting second color light, and disposed adjacent to the second side of the first sub-pixel in the fourth direction; a third sub-pixel, emitting a third color light, and disposed adjacent to the fourth side of the first sub-pixel in the third direction; a fourth sub-pixel, emitting the first color light, and disposed adjacent to the second sub-pixel and the third sub-pixel; and a spacer maintaining a cell gap, disposed between the first sub-pixel and the second sub-pixel and between the third sub-pixel and the fourth sub-pixel, and extending in the third direction, The first to fourth sub-pixels are arranged in the display area, and each of the first to fourth sub-pixels corresponds to a light-emitting area.

2. The display device according to claim 1, wherein: The first direction and the third direction form an angle of 45 degrees, and the first sub-pixel has a diamond shape.

3. The display device according to claim 2, wherein: The second sub-pixel and the third sub-pixel each have a quadrilateral shape having sides extending along the third direction and the fourth direction.

4. The display device according to claim 3, wherein: The first sub-pixel has a size larger than a size of at least one of the second sub-pixel and the third sub-pixel.

5. The display device according to claim 3, wherein: The first color light is blue light, the second color light is green light, and the third color light is red light.

6. The display device according to claim 3, wherein: A long side of the first green sub-pixel or the first red sub-pixel is adjacent to the first side of the first sub-pixel, and A short side of the second green sub-pixel and a short side of the second red sub-pixel are adjacent to the second side of the first sub-pixel.

7. The display device according to claim 1, wherein: The spacing distance between the first sub-pixel and the second sub-pixel is greater than the spacing distance between the first sub-pixel and the closest adjacent sub-pixel adjacent to the first side of the first sub-pixel.

8. The display device according to claim 1, further comprising: a fifth sub-pixel, emitting the third color light, and disposed adjacent to the second side of the first sub-pixel in the fourth direction, wherein the fifth sub-pixel and the second sub-pixel are spaced apart from each other in the third direction, and A spacing distance between the first sub-pixel and the second sub-pixel is greater than a spacing distance between the first sub-pixel and the fifth sub-pixel.

9. The display device according to any one of claims 1 to 8, further comprising: A thin film transistor substrate, comprising a plurality of thin film transistors; A plurality of pixel electrodes are arranged on the thin film transistor substrate; A pixel defining layer, disposed on the thin film transistor substrate and having an opening for exposing the pixel electrode; as well as a sealing substrate facing the thin film transistor substrate, Wherein, the spacer is formed by a protruding portion of the pixel defining layer.

10. The display device according to claim 9, wherein: A protruding opening is formed at a corner of the opening of the pixel defining layer in the first direction in an outward direction of the opening.

11. A display device, comprising: a thin film transistor substrate extending in a first direction being a horizontal direction and in a second direction perpendicular to the first direction; A pixel electrode, disposed on the thin film transistor substrate; as well as a pixel defining layer, which is disposed on the thin film transistor substrate and has an opening for exposing a portion of the pixel electrode, The opening of the pixel defining layer includes a side extending along a third direction inclined at a predetermined angle relative to the first direction and a side extending along a fourth direction perpendicular to the third direction, and A protruding opening is formed at a corner of the opening of the pixel defining layer in the first direction in an outward direction of the opening.

12. The display device according to claim 11, wherein: A protrusion is formed at a corner of the pixel electrode in the first direction at a position corresponding to the protruding opening of the opening of the pixel defining layer.

13. The display device according to claim 11, wherein: The protruding opening of the opening of the pixel defining layer has a curved shape.

14. The display device according to claim 11, wherein: A top end of the protruding opening of the opening of the pixel defining layer has an angle less than 90 degrees.

15. The display device according to claim 11, wherein: The first direction and the third direction form an angle of 45 degrees, and the opening of the pixel defining layer has a diamond shape or a rectangular shape inclined with respect to the first direction and the second direction.

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