TW202002277A - Display device - Google Patents

Abstract

A display device including a substrate and pixel structures is provided. The substrate has an internal area and a surrounding area outside the internal area. The pixel structures are disposed on the substrate. Each of the pixel structures includes a first electrode, a first bank layer, a second bank layer, an emissive layer and a second electrode. The first bank layer is disposed on the first electrode and has a first hole overlapping a portion of the first electrode. The second band layer is disposed on the first bank layer and has a second hole overlapping the first hole. The emissive layer is disposed on the portion of the first electrode and is located in the first hole of the first bank layer and the second hole of the second bank layer. The second electrode is disposed on the emissive layer. The pixel structure includes a first pixel structure disposed in the internal area and a second pixel structure disposed in the surrounding area. A first hole of the second pixel structure and a second hole of the second pixel structure has a first offset in a first direction.

Description

Display device

The invention relates to a display device.

With the advancement of technology, in the process of organic light emitting diode (ORGANIC LIGHT EMITTING DIODE; OLED) display devices, an inkjet printing process (Ink Jet Printing; IJP) can be used to form a light emitting layer. The inkjet printing process is to spray or inject the liquefied organic light-emitting material into the opening defined by the bank to form a light-emitting layer. However, the volatilization rate of the organic light-emitting material at the edge of the substrate of the display device or in the opening inside the substrate is different, resulting in uneven film thickness of the organic light-emitting layer at the edge of the substrate of the display device or inside the substrate, which in turn affects the display panel Display quality.

The invention provides a display device with good performance.

A display device of the present invention includes a substrate and a plurality of pixel structures. The substrate has an inner area and a peripheral area outside the inner area. Multiple pixel structures are provided on the substrate. Each of the pixel structures includes a first electrode, a first bank layer, a second bank layer, a light emitting layer, and a second electrode. The first bank layer is disposed on the first electrode and has a first opening overlapping with a part of the first electrode. The second bank layer is disposed on the first bank layer and has a second opening overlapping with the first opening. The light emitting layer is disposed on part of the first electrode, and is located in the first opening of the first bank layer and the second opening of the second bank layer. The second electrode is disposed on the light emitting layer. The pixel structure includes a first pixel structure disposed in the inner area and a second pixel structure disposed in the peripheral area. The first opening of the second pixel structure and the second opening of the second pixel structure have a first offset in the first direction.

A display device of the present invention includes a substrate and a plurality of pixel structures. The substrate has an inner area and a peripheral area outside the inner area. Multiple pixel structures are provided on the substrate. Each of the pixel structures includes at least a first electrode, a first bank layer, a second bank layer, a light emitting layer, and a second electrode. The first bank layer is disposed on the first electrode, and has at least one first opening overlapping with a portion of at least one first electrode. The second bank layer is disposed on the first bank layer and has a second opening overlapping with at least one first opening. The light emitting layer is disposed on part of the first electrode, and is located in at least one first opening of the first bank layer and the second opening of the second bank layer. The second electrode is disposed on the light emitting layer. The pixel structure includes a first pixel structure disposed in the inner area and a second pixel structure disposed in the peripheral area. The vertical projection area of the at least one first opening of the second pixel structure on the substrate is larger than the vertical projection area of the at least one first opening of the first pixel structure on the substrate.

Based on the above, a display device according to an embodiment of the present invention includes a substrate and a plurality of pixel structures, wherein the substrate has an inner area and a peripheral area outside the inner area, the pixel structure includes a first pixel structure disposed in the inner area, and a pixel structure The second pixel structure in the peripheral area, and the first opening of the second pixel structure and the second opening of the second pixel structure have a first offset in the first direction. Thereby, the problem that the curing speed of the light emitting layer of the pixel structure in the peripheral area and the inner area of the display device is not the same can be improved. In addition, in the display device according to another embodiment of the present invention, the vertical projection area of the at least one first opening on the substrate of the second pixel structure is larger than the vertical projection area of the at least one first opening of the first pixel structure on the substrate It can also improve the problem that the curing speed of the light emitting layer of the pixel structure in the peripheral area and the inner area of the display device is different.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

Hereinafter, the present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the present invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Furthermore, "electrical connection" or "coupling" can mean that there are other components between the two components.

In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship between one element and another element, as shown. It should be understood that relative terms are intended to include different orientations of the device than those shown in the figures. For example, if the device in one drawing is turned over, the element described as being on the "lower" side of the other element will be oriented on the "upper" side of the other element. Thus, the exemplary term "lower" may include "lower" and "upper" orientations, depending on the particular orientation of the drawings. Similarly, if the device in one drawing is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "above" or "below" can include an orientation of above and below.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by those of ordinary skill in the art, taking into account the measurements and A certain amount of measurement-related errors (ie, measurement system limitations). For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. In addition, "about", "approximately" or "substantially" used in this article can select a more acceptable range of deviation or standard deviation according to optical properties, etching properties or other properties, instead of applying one standard deviation to all properties .

Exemplary embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. Therefore, a change in the shape of the graph as a result of, for example, manufacturing techniques and/or tolerances can be expected. Therefore, the embodiments described herein should not be construed as being limited to the specific shapes of the regions as shown herein, but include deviations in shapes caused by manufacturing, for example. For example, an area shown or described as flat may generally have rough and/or non-linear characteristics. In addition, the acute angle shown may be round. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the precise shapes of the regions, and are not intended to limit the scope of the claims.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and the present invention, and will not be interpreted as idealized or excessive Formal meaning unless explicitly defined as such in this article.

Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts.

FIG. 1A is a schematic top view of some components of a display device according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of the pixel structure of the display device according to section line A-A' of FIG. 1A. 1C is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line C-C' of FIG. 1A. FIG. 1D is a schematic cross-sectional view of the pixel structure of the display device according to section line B-B' of FIG. 1A. FIG. 1E is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line D-D' of FIG. 1A. FIG. 1F is an enlarged schematic diagram of the pixel structure 200B of the display panel of FIG. 1A. FIG. 1A omits the active device layer 210, the hole injection layer 250, the hole transport layer 260, the light emitting layer 270, the electron transport layer 280, the electron injection layer 290, and the second electrode 300 of FIGS. 1B to 1E.

Referring to FIG. 1A, the display device 10 includes a substrate 100 and a plurality of pixel structures 200A-200M. The substrate 100 has an inner region 110 and a peripheral region 120. The peripheral area 120 is located outside the inner area 110. For example, in this embodiment, the peripheral region 120 surrounds the inner region 110, and the peripheral region 120 is the region from the inner region 110 to the edges 100a, 100b of the substrate 100. For example, the shape of the peripheral area 120 in this embodiment is, for example, a chevron shape, but it is not limited thereto. In the present embodiment, the substrate 100 is, for example, a rigid substrate. However, the present invention is not limited to this, and in other embodiments, the substrate 100 may also be a flexible substrate. For example, the material of the hard substrate can be glass, quartz or other suitable materials; the material of the flexible substrate can be plastic or other suitable materials.

Please refer to FIGS. 1A to 1E, a plurality of pixel structures 200A to 200M are disposed on the substrate 100. The plurality of pixel structures 200A-200M include a first pixel structure 200A disposed in the inner area 110 and a second pixel structure 200B, 200C, 200D, 200E, 200F, 200G, 200H, 200I, 200J disposed in the peripheral area 120 , 200K, 200L, 200M. Each pixel structure 200A-200M of this embodiment includes a first electrode 220, a first bank layer 230, a second bank layer 240, a light emitting layer 270, and a second electrode 300. In this embodiment, each pixel structure 200A-200M may further include an active device layer 210, a hole injection layer 250, a hole transport layer 260, an electron transport layer 280, and an electron injection layer 290, but the present invention does not Limited.

In this embodiment, the active device layer 210 is disposed on the substrate 100. For example, in this embodiment, the active device layer 210 includes an active device. The active device includes at least one thin film transistor, and has a gate, a semiconductor pattern, a drain, and a source.

In this embodiment, the first electrode 220 is disposed on the active device layer 210. The first electrode 220 is electrically connected to the active device in the active device layer 210. For example, the first electrode 220 of this embodiment is, for example, a pixel electrode, and is electrically connected to the drain of at least one thin film transistor of the active device.

The first bank layer 230 is disposed on the first electrode 220. The first bank layer 230 has a first opening 232 overlapping a portion of the first electrode 220. The material of the first bank layer 230 includes silicon oxide, silicon nitride, or other suitable materials.

The second bank layer 240 is disposed on the first bank layer 230. The second bank layer 240 has a second opening 242 overlapping the first opening 232. In this embodiment, the material of the second bank layer 240 and the material of the first bank layer 230 may be different; for example, for the same organic light-emitting material (for example, simply referred to as ink), the first bank layer 230 is, for example, The ink affinity, and the second bank layer 240 is, for example, ink repellent, but the invention is not limited thereto. In this embodiment, the material of the second bank layer 240 is, for example, photoresist, but the invention is not limited thereto.

The vertical projection of the portion of the first bank layer 230 on the substrate 100 that is not covered by the second bank layer 240 may have a width L1 and a width L2 in the first direction d1, while the portion of the first bank that is not covered by the second bank layer 240 The layer 230 has a width L3 and a width L4 in the second direction d2, where the first direction d1 and the second direction d2 are staggered. For example, in this embodiment, the first direction d1 and the second direction d2 may be perpendicular. Please refer to FIG. 1A. It is worth noting that the first pixel structure 200A is disposed in the inner region 110, and the portion of the first pixel structure 200A that is not covered by the second bank layer 240 is in the first direction d1 The width L1 and the width L2 may be substantially equal, and the width L3 and the width L4 of the first bank layer 230 in the second direction of the portion of the first pixel structure 200A that is not covered by the second bank layer 240 may be substantially equal; The second pixel structure 200B is disposed in the peripheral area 120. The width L1 and width L2 of the first bank layer 230 of the portion of the second pixel structure 200B not covered by the second bank layer 240 in the first direction d1 are not equal, and In the second pixel structure 200B, a portion of the first bank layer 230 that is not covered by the second bank layer 240 has a width L3 that is not equal to a width L4 in the second direction d2. Please refer to FIGS. 1D and 1E. For example, taking the second pixel structure 200B as an example, a portion of the first bank layer 230 of the second pixel structure 200B that is not covered by the second bank layer 240 is in the first direction d1 The width L2 is greater than the width L1, and the width L4 of the first bank layer 230 in the second direction of the portion of the second pixel structure 200B that is not covered by the second bank layer 240 is greater than the width L3. That is to say, the first opening 232 of the second pixel structure 200B may deviate from the geometric center of the second opening 242, and the geometric center of the first opening 232 of the first pixel structure 200A may be substantially aligned with the second opening 242 Geometric center.

The light emitting layer 270 is disposed on part of the first electrode 220 and is located in the first opening 232 of the first bank layer 230 and the second opening 242 of the second bank layer 240. For example, in this embodiment, the hole injection layer 250, the hole transport layer 260, and the light emitting layer 270 are sequentially disposed on the portion of the first electrode 220. The hole injection layer 250, the hole transport layer 260 and the light emitting layer 270 are located in the first opening 232 of the first bank layer 230 and the second opening 242 of the second bank layer 240. For example, in this embodiment, the method in which the hole injection layer 250, the hole transport layer 260, and the light-emitting layer 270 are sequentially disposed on part of the first electrode 220 is, for example, an inkjet printing process (Ink Jet Printing; IJP), but the invention is not limited to this. In this embodiment, the material of the light emitting layer 270 is, for example, an organic light emitting material or a quantum dot light emitting material, but the present invention is not limited thereto.

In the third direction d3 perpendicular to the substrate 100, the top surface 272 of the light emitting layer 270 has a point 272a that overlaps with the center of the second opening 242. The distance from a point 272a on the top surface 272 of the light-emitting layer 270 to the top surface 222 of the first electrode 220 is the first distance T1. The distance from the boundary surface 272 of the top surface 272 of the light emitting layer 270 and the second bank layer 240 to the top surface 234 of the first bank layer 230 is the second distance T2. In this embodiment, the first distance T1 is less than or equal to the second distance T2. For example, the second distance T2 is less than or equal to 20 times the first distance T1, that is, T1 ≤ T2 ≤ 20´T1, but the present invention is not limited to this.

In this embodiment, the electron transport layer 280 and the electron injection layer 290 are sequentially disposed on the light emitting layer 270 and the second bank layer 240. For example, in this embodiment, the electron transport layer 280 and the electron injection layer 290 are formed by, for example, a vapor deposition process, but the invention is not limited thereto.

The second electrode 300 is disposed on the light emitting layer 270. For example, in this embodiment, the second electrode 300 is disposed on the electron injection layer 290. In this embodiment, in the third direction d3 perpendicular to the substrate 100, the second electrode 300 may have substantially the same film thickness. That is, in the third direction d3 perpendicular to the substrate 100, the top surface 272 of the light-emitting layer 270 has a point 272a overlapping with the center of the second opening 242, and the top surface 302 of the second electrode 300 has A point 302a overlapping in the center. A point 272a on the top surface 272 of the light-emitting layer 270 is located above the first electrode 220 in a portion overlapping the first opening 232 and the second opening 242, and a point 302a on the top surface 302 of the second electrode 300 is located at the positive point 272a Above, the distance from the point 272a to the point 302a in the third direction d3 is the first distance H1. The distance between the top surface 244 of the second bank layer 240 and the top surface 302 of the second electrode 300 in the third direction d3 is the second distance H2, and the first distance H1 is approximately equal to the second distance H2. That is, in this embodiment, the composite layer composed of the electron transport layer 280, the electron injection layer 290, and the second electrode 300 has substantially the same film thickness, but the present invention is not limited to this.

It is worth mentioning that the first opening 232 and the second opening 242 of the second pixel structure 200B have a first offset d1 in the first direction d1. Please refer to FIG. 1F. For example, the virtual center line 232x passes through the geometric center of the first opening 232 and is parallel to the second direction d2, and the virtual center line 242x passes through the geometric center of the second opening 242 and is parallel to the second direction d2 The virtual center line 232x of the first opening 232 and the virtual center line 242x of the second opening 242 are separated by a first distance in the first direction d1, and the first distance is the first offset d1. On the other hand, the geometric center of the first opening 232 of the first pixel structure 200A of this embodiment is substantially aligned with the geometric center of the second opening 242 of the first pixel structure 200A, so the first The offset d1 is substantially zero. That is, the first offset d1 of the second pixel structure 200B of this embodiment is greater than the first offset d1 of the first pixel structure 200A.

In this embodiment, the first opening 232 and the second opening 242 of the second pixel structure 200B may further have a second offset d2 in the second direction d2. Please refer to FIG. 1F. For example, taking the second pixel structure 200B as an example, the virtual center line 232y passes through the geometric center of the first opening 232 and is parallel to the first direction d1, and the virtual center line 242y passes through the second opening 242 The geometric center of is parallel to the first direction d1, and the virtual centerline 232y of the first opening 232 and the virtual centerline 242y of the second opening 242 are separated by a second distance in the second direction d2. The second distance is the first Two offset d2. On the other hand, the geometric center of the first opening 232 of the first pixel structure 200A of this embodiment is substantially aligned with the geometric center of the second opening 242 of the first pixel structure 200A, so the second of the first pixel structure 200A The offset d2 is substantially zero. That is, the second offset d2 of the second pixel structure 200B of this embodiment is greater than the second offset d2 of the first pixel structure 200A.

1A and 1F, taking the second pixel structure 200B as an example, the edge 232s of the first opening 232 has a first point 232a and a second point 232b arranged in the first direction d1, the first point 232a is relatively The second point 232b is away from the edge 100a of the substrate 100; the edge 232s of the first opening 232 has a fifth point 232c and a sixth point 232d arranged in the second direction d2, the fifth point 232c is farther from the substrate 100 than the sixth point 232d The edge 100b; the edge 242s of the second opening 242 has a third point 242a and a fourth point 242b arranged in the first direction d1, the third point 242a is farther from the edge 100a of the substrate 100 than the fourth point 242b; the second opening 242 is The edge 242s has a seventh point 242c and an eighth point 242d arranged in the second direction d2. The seventh point 242c is farther from the edge 100b of the substrate 100 than the eighth point 242d. In the first direction d1, there is a distance W1 between the first point 232a and the third point 242a, and a distance W2 between the second point 232b and the fourth point 242b. In the second direction d2, there is a distance W3 between the fifth point 232c and the seventh point 242c, and a distance W4 between the sixth point 232d and the eighth point 242d. It is worth noting that in this embodiment, the distance W2 is greater than the distance W1, and the distance W4 is greater than the distance W3. That is to say, the geometric center of the first opening 232 of the second pixel structure 200B is shifted toward the inner region 110 of the substrate 100 relative to the geometric center of the second opening 242 of the second pixel structure 200B, and the second pixel structure The portion of the first bank layer 230 of 200B that is not covered by the second bank layer 240 has a larger width near the edge 100 a and/or edge 100 b of the substrate 100.

Please refer to FIG. 1A. The plurality of pixel structures 200A-200M in this embodiment may further include second pixel structures 200F, 200I, 200L disposed in the peripheral area 120 and a third pixel structure 200C disposed in the peripheral area 120. 200D, 200E, 200G, 200H, 200J, 200K, 200M.

For example, in this embodiment, the direction d1 and the direction d2 can be divided into four quadrants, wherein the second pixel structure 200F and the third pixel structure 200G are located in the first quadrant, and the second pixel structure 200B and the third The pixel structure 200C is located in the second quadrant, the second pixel structure 200I and the third pixel structure 200J are located in the third quadrant, and the second pixel structure 200L and the third pixel structure 200M are located in the fourth quadrant.

The first pixel structure 200A, the second pixel structure 200B, and the third pixel structure 200C located in the second quadrant are sequentially arranged along a direction d12 from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100. For example, the first opening 232 and the second opening 242 of the third pixel structure 200C have a first offset d1 in the first direction d1, and the first offset d1 of the third pixel structure 200C is greater than the first The first offset d1 of the two-pixel structure 200B. In addition, the first opening 232 and the second opening 242 of the third pixel structure 200C have a second offset d2 in the second direction d2, and the second offset d2 of the third pixel structure 200C is greater than the second The second offset d2 of the element structure 200B.

The first pixel structure 200A, the second pixel structure 200I, and the third pixel structure 200J located in the third quadrant are sequentially arranged along a direction d13 from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100. For example, the first opening 232 and the second opening 242 of the third pixel structure 200J have a first offset d1 in the first direction d1, and the first offset d1 of the third pixel structure 200J is greater than the first The first offset d1 of the two-pixel structure 200I and the first offset d1 of the second pixel structure 200I are greater than the first offset d1 of the first pixel structure 200A. In addition, the first opening 232 and the second opening 242 of the third pixel structure 200J have a second offset d2 in the second direction d2, and the second offset d2 of the third pixel structure 200J is greater than the second The second offset d2 of the pixel structure 200I, the second offset d2 of the second pixel structure 200I is greater than the second offset d2 of the first pixel structure 200A.

The first pixel structure 200A, the second pixel structure 200L, and the third pixel structure 200M located in the fourth quadrant are along the direction from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100 (for example: the reverse of the direction d12 Direction) in order. For example, the first opening 232 and the second opening 242 of the third pixel structure 200M have a first offset d1 in the first direction d1, and the first offset d1 of the third pixel structure 200M is greater than the first The first offset d1 of the two-pixel structure 200L and the first offset d1 of the second pixel structure 200L are greater than the first offset d1 of the first pixel structure 200A. In addition, the first opening 232 and the second opening 242 of the third pixel structure 200M have a second offset d2 in the second direction d2, and the second offset d2 of the third pixel structure 200M is greater than the second The second offset d2 of the pixel structure 200L, the second offset d2 of the second pixel structure 200L is greater than the second offset d2 of the first pixel structure 200A.

The first pixel structure 200A, the second pixel structure 200F, and the third pixel structure 200G in the first quadrant are along the direction from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100 (for example: the reverse of the direction d13 Direction) in order. For example, the first opening 232 and the second opening 242 of the third pixel structure 200G have a first offset d1 in the first direction d1, and the first offset d1 of the third pixel structure 200G is greater than the first The first offset d1 of the two-pixel structure 200F and the first offset d1 of the second pixel structure 200F are greater than the first offset d1 of the first pixel structure 200A. In addition, the first opening 232 and the second opening 242 of the third pixel structure 200G have a second offset d2 in the second direction d2, and the second offset d2 of the third pixel structure 200G is greater than the second The second offset d2 of the pixel structure 200F, the second offset d2 of the second pixel structure 200F is greater than the second offset d2 of the first pixel structure 200A.

In this embodiment, the first pixel structure 200A and the third pixel structure 200D are sequentially arranged along the direction d1 from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100. For example, in this embodiment, the first opening 232 and the second opening 242 of the third pixel structure 200D have a first offset d1 in the first direction d1, and the first opening of the third pixel structure 200D The offset d1 is greater than the first offset d1 of the first pixel structure 200A. In addition, the second offset d2 of the first opening 232 and the second opening 242 of the third pixel structure 200D in the second direction d2 may be substantially zero.

In this embodiment, the first pixel structure 200A and the third pixel structure 200E are sequentially arranged along the direction d2 from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100. For example, in this embodiment, the first opening 232 and the second opening 242 of the third pixel structure 200E have a second offset d2 in the second direction d2, and the second opening of the third pixel structure 200E The offset d2 is greater than the second offset d2 of the first pixel structure 200A. In addition, the first offset d1 of the first opening 232 and the second opening 242 of the third pixel structure 200E in the first direction d1 may be substantially zero.

In this embodiment, the first pixel structure 200A and the third pixel structure 200K are sequentially arranged along the direction from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100 (for example, the reverse direction of the direction d1). For example, in this embodiment, the first opening 232 and the second opening 242 of the third pixel structure 200K have a first offset d1 in the first direction d1, and the first opening of the third pixel structure 200K The offset d1 is greater than the first offset d1 of the first pixel structure 200A. In addition, the second offset d2 of the first opening 232 and the second opening 242 of the third pixel structure 200D in the second direction d2 may be substantially zero.

In this embodiment, the first pixel structure 200A and the third pixel structure 200H are sequentially arranged along the direction d2 from the inner region 110 of the substrate 100 to the peripheral region 120 of the substrate 100. For example, in this embodiment, the first opening 232 of the third pixel structure 200H and the second opening 242 have a second offset d2 in the second direction d2, and the second opening of the third pixel structure 200H The offset d2 is greater than the second offset d2 of the first pixel structure 200A. In addition, the first offset d1 of the first opening 232 and the second opening 242 of the third pixel structure 200H in the first direction d1 may be substantially zero.

It is worth mentioning that in this embodiment, since the first opening 232 and the second opening 242 of the second and three pixel structures 200B-200M located in the peripheral area 120 have a first offset in the first direction d1 d1 and/or the second offset d2, therefore, the curing speed of the light-emitting layer 270 in the second and three-pixel structures 200B to 200M provided in the peripheral area 120 of the display device 10 can be the same as that of the light provided in the inner area 110. The difference in the curing speed of the light-emitting layer 270 in a pixel structure 200A is small, thereby improving the display quality of the display device 10.

2A is a schematic top view of some components of a display device according to another embodiment of the invention. 2B is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line E-E' of FIG. 2A. 2A omits the illustration of the active device layer 210, the hole injection layer 250, the hole transport layer 260, the light emitting layer 270, the electron transport layer 280, the electron injection layer 290, and the second electrode 300 of FIG. 2B. It must be noted here that the embodiments of FIGS. 2A and 2B follow the element numbers and partial contents of the embodiments of FIGS. 1A and 1B, wherein the same or similar reference numbers are used to indicate the same or similar elements, and the same are omitted Description of technical content. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

2A and 2B, in the display device 20 of this embodiment, the plurality of pixel structures 200A, 200N include a first pixel structure 200A disposed in the inner region 110 of the substrate 100 and a first pixel structure 200A disposed in the peripheral region 120 Two pixel structure 200N. For example, in this embodiment, the second pixel structure 200N may be disposed at the corner of the substrate 100, but it is not limited thereto.

In this embodiment, the second pixel structure 200N includes two adjacent sub-pixel structures 200N-1 and 200N-2 arranged in the first direction d1 and adjacent to each other. In this embodiment, the second opening 242 of the sub-pixel structure 200N-1 of the second pixel structure 200N is in communication with the second opening 242 of the sub-pixel structure 200N-2.

In this embodiment, the first opening 232 of the sub-pixel structure 200N-1 and the first opening 232 of the sub-pixel structure 200N-2 are separated from each other. That is to say, the first opening 232 of the second pixel structure 200N is the first opening 232 of the sub-pixel structure 200N-1 and the first opening 232 of the sub-pixel structure 200N-2 separated from each other. That is, in this embodiment, the vertical projection area of at least one first opening 232 of the second pixel structure 200N on the substrate 100 is the first opening 232 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N- The first openings 232 of 2 are respectively the sum of the multiple vertical projection areas on the substrate 100.

It should be noted that, since the second opening 242 of the sub-pixel structure 200N-1 communicates with the second opening 242 of the sub-pixel structure 200N-2, an inkjet printing process can be used to dispose a droplet at the same time On the first electrode 220 of the pixel structure 200N-1 and the first electrode 220 of the sub-pixel structure 200N-2, a light-emitting layer 270 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2 is further formed. The light-emitting layers 270 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2 are formed using the same droplet, and the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2 are used to display the same color.

In this embodiment, at least one first opening 232 of the second pixel structure 200N (that is, the first opening 232 of the sub-pixel structure 200N-1 and the first opening 232 of the sub-pixel structure 200N-2) The vertical projection area on the substrate 110 is larger than the vertical projection area of the first opening 232 of the first pixel structure 200A on the substrate 110. Therefore, when the light-emitting layer 270 is formed using the inkjet printing process, it is disposed on the second pixel structure The amount of droplets in at least one first opening 232 of 200N will be greater than the amount of droplets provided in the first opening 232 of the first pixel structure 200A.

It is worth mentioning that the droplets of the second pixel structure 200N disposed in the peripheral area 120 have a fast volatilization speed, and the droplets of the first pixel structure 200A disposed in the inner area 110 have a slow volatilization speed. The amount of droplets on the second pixel structure 200N of the peripheral area 120 is greater than the amount of droplets disposed on the first pixel structure 200A of the inner area 110, so that the time required for the curing of the light emitting layer 270 of the second pixel structure 200N The difference in time required for curing the light emitting layer 270 of the first pixel structure 200A can be reduced. Thereby, the problem that the film thickness of the light-emitting layer 270 of the second pixel structure 200N in the peripheral area 120 of the display panel 20 and the light-emitting layer 270 of the first pixel structure 200A in the inner area 110 may be different, thereby improving the display device 20 display quality.

In this embodiment, the first bank layer 230 includes sub-banks 230'. The sub-bank 230' is located between the first opening 232 of the sub-pixel structure 200N-1 and the first opening 232 of the sub-pixel structure 200N-2. In this embodiment, the sub-bank 230' has a width L5 in the first direction d1, and the width L5 is not zero.

For example, in this embodiment, at least one first electrode 220 of the second pixel structure 200N may be a plurality of first electrodes 220 separated from each other. Specifically, the first electrode 220 of the second pixel structure 200N is the first electrode 220 of the sub-pixel structure 200N-1 and the first electrode 220 of the sub-pixel structure 200N-2 separated from each other. The first electrode 220 of the sub-pixel structure 200N-1 and the first electrode 220 of the sub-pixel structure 200N-2 can be selectively connected to different thin film transistors. That is to say, in this embodiment, the resolutions of the display device 20 in the inner area 110 and the peripheral area 120 can be selectively consistent, but not limited to this. The first electrodes 220 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2 respectively overlap the first openings 232 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2, respectively. The light-emitting layer 270 is disposed on a portion of the first electrode 220 of the sub-pixel structure 200N-1 and a portion of the first electrode 220 of the sub-pixel structure 200N-2, and is located in the first opening 232 of the sub-pixel structure 200N-1. The first opening 232 of the sub-pixel structure 200N-2, the second opening 242 of the sub-pixel structure 200N-1, and the second opening 242 of the sub-pixel structure 200N-2. For example, in this embodiment, since the second opening 242 of the sub-pixel structure 200N-1 communicates with the second opening 242 of the sub-pixel structure 200N-2, the sub-pixel structure 200N-1 and the sub-pixel The hole injection layer 250, the hole transport layer 260 and the light emitting layer 270 of the structure 200N-2 can utilize the first opening 232 distributed in the sub-pixel structure 200N-1 and the first opening 232 of the sub-pixel structure 200N-2, respectively The droplets are sequentially formed into the hole injection layer 250, the hole transport layer 260 and the light emitting layer 270, and are formed on the plurality of first electrodes 220 of the sub-pixel structure 200N-1 and the sub-pixel structure 200N-2. The hole injection layer 250, the hole transport layer 260, and the light emitting layer 270 are located in the first opening 232 of the sub-pixel structure 200N-1, the first opening 232 of the sub-pixel structure 200N-2, and the sub-pixel structure 200N-1. The second opening 242 and the second opening 242 of the sub-pixel structure 200N-2.

In this embodiment, the hole injection layer 250, the hole transport layer 260, and the light emitting layer 270 may also be formed on the sub-bank 230'. In the third direction d3 perpendicular to the substrate 100, the top surface 272 of the light emitting layer 270 has a point 272a overlapping the center of the second opening and a point 272b overlapping the center of the sub-bank 230'. The distance from a point 272a on the top surface 272 of the light-emitting layer 270 to the top surface 222 of the first electrode 220 is the first distance T1. A point 272b on the top surface 272 of the light emitting layer 270 has a distance T1' from the top surface 234' of the sub-bank 230'. In this embodiment, the first distance T1 is approximately equal to the distance T1'.

The electron transport layer 280, the electron injection layer 290, and the second electrode 300 are sequentially disposed on the light emitting layer 270 and the second bank layer 240. For example, in the present embodiment, each of the electron transport layer 280, the electron injection layer 290, and the second electrode 300 may have substantially the same film thickness, but the present invention is not limited thereto.

3A is a schematic top view of some components of a display device according to yet another embodiment of the invention. 3B is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line F-F' of FIG. 3A. 3A omits the illustration of the active device layer 210, the hole injection layer 250, the hole transport layer 260, the light emitting layer 270, the electron transport layer 280, the electron injection layer 290, and the second electrode 300 of FIG. 3B. It must be noted here that the embodiments of FIGS. 3A and 3B follow the element numbers and partial contents of the embodiments of FIGS. 2A and 2B, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the same is omitted Description of technical content. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

3A and 3B, in the display device 30 of this embodiment, the plurality of pixel structures 200A, 200P include a first pixel structure 200A disposed in the inner region 110 of the substrate 100 and a first pixel structure 200A disposed in the peripheral region 120 Two pixel structure 200P. For example, in this embodiment, the second pixel structure 200P may be disposed at the corner of the substrate 100, but it is not limited thereto.

In this embodiment, the second pixel structure 200P includes three adjacent sub-pixel structures 200P-1, sub-pixel structures 200P-2, and sub-pixel structures 200P-3 arranged in the first direction d1 and adjacent to each other. In this embodiment, the second opening 242 of the sub-pixel structure 200P-1 of the second pixel structure 200P, the second opening 242 of the sub-pixel structure 200P-2 and the second opening 242 of the sub-pixel structure 200P-3 Connected.

In this embodiment, the first opening 232 of the sub-pixel structure 200P-1, the first opening 232 of the sub-pixel structure 200P-2 and the first opening 232 of the sub-pixel structure 200P-3 are separated from each other. In other words, the first opening 232 of the second pixel structure 200P is the first opening 232 of the sub-pixel structure 200P-1, the first opening 232 of the sub-pixel structure 200P-2, and the sub-pixel structure 200P The first opening 232 of -3. That is, in this embodiment, the vertical projection area of at least one first opening 232 of the second pixel structure 200P on the substrate 100 is the first opening of the sub-pixel structure 200P-1 in the second pixel structure 200P 232, the first opening 232 of the sub-pixel structure 200P-2 and the first opening 232 of the sub-pixel structure 200P-3 are each the sum of a plurality of vertical projection areas on the substrate 100.

It should be noted that, since the second opening 242 of the sub-pixel structure 200P-1 and the second opening 242 of the sub-pixel structure 200P-2 are in communication with the second opening 242 of the sub-pixel structure 200P-3, a spray can be used In the ink printing process, a droplet is simultaneously disposed on the first electrode 220 of the sub-pixel structure 200P-1, the first electrode 220 of the sub-pixel structure 200P-2 and the first electrode 220 of the sub-pixel structure 200P-3 On top, the light-emitting layer 270 of the sub-pixel structure 200P-1, the sub-pixel structure 200P-2, and the sub-pixel structure 200P-3 is further formed. The light-emitting layers 270 of the sub-pixel structure 200P-1, the sub-pixel structure 200P-2 and the sub-pixel structure 200P-3 are formed using the same droplet, and the sub-pixel structure 200P-1, the sub-pixel structure 200P-2 and The sub-pixel structure 200P-3 is used to display the same color.

In this embodiment, since at least one first opening 232 of the second pixel structure 200P (ie, the first opening 232 of the sub-pixel structure 200P-1 and the first opening 232 of the sub-pixel structure 200P-2 are The vertical opening area of the first opening 232 of the sub-pixel structure 200P-3) on the substrate 110 is larger than the vertical projection area of the first opening 232 of the first pixel structure 200A on the substrate 110, so the inkjet printing process is used When the light-emitting layer 270 is formed, the amount of droplets provided in the at least one first opening 232 of the second pixel structure 200P is greater than the amount of droplets provided in the first opening 232 of the first pixel structure 200A.

It is worth mentioning that the droplets of the second pixel structure 200P disposed in the peripheral area 120 have a fast volatilization speed, and the droplets of the first pixel structure 200A disposed in the inner area 110 have a slow volatilization speed. The amount of droplets on the second pixel structure 200P of the peripheral area 120 is greater than the amount of droplets provided on the first pixel structure 200A of the inner area 110, so that the curing of the light emitting layer 270 of the second pixel structure 200P is required The difference between the time and the time required for the curing of the light emitting layer 270 of the first pixel structure 200A can be reduced. Thereby, the problem that the film thickness of the light-emitting layer 270 of the second pixel structure 200P in the peripheral region 120 of the display panel 30 and the light-emitting layer 270 of the first pixel structure 200A in the inner region 110 are different can be improved, thereby improving the display device 30 display quality.

For example, in this embodiment, the first bank layer 230 includes sub-banks 230', 230". The sub-bank 230' is located between the first opening 232 of the sub-pixel structure 200P-1 and the sub-pixel structure 200P-2. Between the first openings 232, the sub-bank 230" is located between the first opening 232 of the sub-pixel structure 200P-2 and the first opening 232 of the sub-pixel structure 200P-3. In this embodiment, the sub-bank 230' and the sub-bank 230" each have a width L5 and a width L5' in the first direction d1, and neither the width L5 nor the width L5' is 0. In this embodiment, the light-emitting layer A point 272b on the top surface 272 of 270 has a distance T1" from the top surface 234" of the sub-bank 230". In this embodiment, the first distance T1, the distance T1' and the distance T1" are substantially equal.

In this embodiment, the first electrode 220 of the sub-pixel structure 200P-1 in the second pixel structure 200P, the first electrode 220 of the sub-pixel structure 200P-2 and the first electrode of the sub-pixel structure 200P-3 The electrodes 220 are separated from each other, and the first electrodes 220 of the sub-pixel structure 200P-1, the sub-pixel structure 200P-2 and the sub-pixel structure 200P-3 are respectively separated from the sub-pixel structure 200P-1 and the sub-pixel structure 200P- 2 and the first openings 232 of the sub-pixel structures 200P-3 overlap. The first electrode 220 of the sub-pixel structure 200P-1, the first electrode 220 of the sub-pixel structure 200P-2 and the first electrode 220 of the sub-pixel structure 200P-3 can be selectively connected to different thin film transistors . That is to say, in this embodiment, the resolution of the display device 30 in the inner area 110 and the peripheral area 120 can be selectively consistent, but not limited to this.

4 is a schematic top view of some components of a display device according to yet another embodiment of the invention. It must be noted here that the embodiment of FIG. 4 uses the element numbers and partial contents of the embodiment of FIG. 2A, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

The main difference between the embodiment of FIG. 4 and the embodiment of FIG. 2A is that: in the embodiment of FIG. 4, the respective second sub-pixel structures 200Q-1 and 200Q-2 adjacent in the second direction d2 The openings 242 communicate with each other. The display device 40 of FIG. 4 has similar functions and advantages as the display device 20 of FIG. 2A described above, and will not be repeated here.

5 is a schematic top view of some components of a display device according to another embodiment of the invention. It should be noted here that the embodiment of FIG. 5 uses the element numbers and partial contents of the embodiment of FIG. 4, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

The main difference between the embodiment of FIG. 5 and the embodiment of FIG. 4 is that in the embodiment of FIG. 5, at least one first opening 232 of the second pixel structure 200R and the second opening 242 of the second pixel structure 200R are The first direction d1 has a first offset d1 that is not 0. At least one first opening 232 of the second pixel structure 200R and the second opening 242 of the second pixel structure 200R have a second offset d2 that is not 0 in the second direction d2.

Specifically, in this embodiment, the second pixel structure 200R disposed in the peripheral area 120 includes the sub-pixel structure 200R-1 and the sub-pixel structure 200R-2 adjacent in the second direction d2. The second opening 242 of the pixel structure 200R-1 communicates with the second opening 242 of the sub-pixel structure 200R-2, and the first opening 232 of the sub-pixel structure 200R-1 and the first opening of the sub-pixel structure 200R-2 232 separated from each other. The virtual center line 232x passes through the entire geometric center of the first opening 232 of the sub-pixel structure 200R-1 and the first opening 232 of the sub-pixel structure 200R-2 and is parallel to the second direction d2, and the virtual center line 242x passes through The geometric center of the second opening 242 of the second pixel structure 200R, and the first offset d1 is the distance between the virtual center line 232x and the virtual center line 242x in the first direction d1. The virtual center line 232y passes through the entire geometric center of the first opening 232 of the sub-pixel structure 200R-1 and the first opening 232 of the sub-pixel structure 200R-2 and is parallel to the first direction d1. The virtual center line 242y passes through The geometric center of the second opening 242 of the second pixel structure 200R, and the second offset d2 is the distance between the virtual center line 232y and the virtual center line 242y in the second direction d2.

The display device 50 of FIG. 5 combines the advantages and functions of the display device 50 of FIG. 4 and the display device 10 of FIG. 1A, and will not be repeated here.

6 is a schematic top view of some components of a display device according to yet another embodiment of the invention. It must be noted here that the embodiment of FIG. 6 follows the element numbers and partial contents of the embodiment of FIG. 4, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

The main difference between the embodiment of FIG. 6 and the embodiment of FIG. 4 is that in the embodiment of FIG. 6, the vertical projection area of the second opening 242 of the second pixel structure 200S not only located in the peripheral area 120 on the substrate 100 is greater than The vertical projection area of the second opening 242 of the first pixel structure 200A located in the inner area 110 on the substrate 100, and the vertical projection area of the first opening 232 of the second pixel structure 200S located in the peripheral area 120 on the substrate 100 are also The vertical projection area of the first opening 232 of the first pixel structure 200A located in the inner region 110 on the substrate 100 is larger. In addition, in this embodiment, the resolutions of the display device 60 in the inner area 110 and the peripheral area 120 may be selectively inconsistent, for example: the resolution of the inner area 110 may be greater than the resolution of the peripheral area 120, but not as limit. The display device 60 of FIG. 6 has similar advantages and effects as the display device 40 of FIG. 4 and will not be repeated here.

7 is a schematic top view of some components of a display device according to yet another embodiment of the present invention. It must be noted here that the embodiment of FIG. 7 uses the element numbers and partial contents of the embodiment of FIG. 4, wherein the same or similar reference numerals are used to indicate the same or similar elements, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

The main difference between the embodiment of FIG. 7 and the embodiment of FIG. 4 is that in the embodiment of FIG. 7, the resolutions of the display device 70 in the inner area 110 and the peripheral area 120 may be selectively inconsistent, for example: The resolution may be greater than the resolution of the internal zone 110, but not limited thereto.

In summary, the display device according to an embodiment of the invention includes a substrate and a plurality of pixel structures. The substrate has an inner area and a peripheral area outside the inner area. Multiple pixel structures are provided on the substrate. Each of the pixel structures includes a first electrode, a first bank layer, a second bank layer, a light emitting layer, and a second electrode. The first bank layer is disposed on the first electrode and has a first opening overlapping with a part of the first electrode. The second bank layer is disposed on the first bank layer and has a second opening overlapping with the first opening. The light emitting layer is disposed on part of the first electrode, and is located in the first opening of the first bank layer and the second opening of the second bank layer. The second electrode is disposed on the light emitting layer. The pixel structure includes a first pixel structure disposed in the inner area and a second pixel structure disposed in the peripheral area. In particular, the first opening of the second pixel structure and the second opening of the second pixel structure have a first offset in the first direction, or at least one first opening of the second pixel structure is on the substrate The vertical projection area is larger than the vertical projection area of at least one first opening of the first pixel structure on the substrate. In this way, the problem that the film thickness of the light-emitting layer of the pixel structure in the peripheral area and the inner area of the display device is not the same, thereby improving the display quality of the display device.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10, 20, 30, 40, 50, 60, 70 ‧‧‧ display device 100‧‧‧ substrate 100a, 100b‧‧‧edge 110‧‧‧Inner area 120‧‧‧ surrounding area 200A‧‧‧The first pixel structure 200B, 200F, 200I, 200L, 200N, 200P, 200Q, 200R, 200S, 200T ‧‧‧ second pixel structure 200C, 200D, 200E, 200G, 200H, 200J, 200K, 200M ‧‧‧ third pixel structure 200N-1, 200N-2, 200P-1, 200P-2, 200P-3, 200Q-1, 200Q-2, 200R-1, 200R-2, 200T-1, 200T-2 210‧‧‧Active component layer 220‧‧‧First electrode 222‧‧‧Top 230‧‧‧The first embankment 230’、230”‧‧‧Zidi Bank 232‧‧‧First opening 232a‧‧‧First point 232b‧‧‧Second point 232c‧‧‧The fifth point 232d‧‧‧Sixth point 232s‧‧‧edge 232x, 232y‧‧‧ Virtual centerline 234, 234’, 234” ‧‧‧ top 240‧‧‧Second embankment 242‧‧‧Second opening 242a‧‧‧The third point 242b‧‧‧point four 242c‧‧‧Point 7 242d‧‧‧Eighth 242s‧‧‧edge 242x, 242y ‧‧‧ virtual centerline 244‧‧‧Top 250‧‧‧hole injection layer 260‧‧‧Electric transmission layer 270‧‧‧luminous layer 270a‧‧‧Boundary 272‧‧‧Top 272a, 272b‧‧‧ point 280‧‧‧Electronic transmission layer 290‧‧‧Electron injection layer 300‧‧‧Second electrode 302‧‧‧Top 302a‧‧‧point A-A’, B-B’, C-C’, D-D’, E-E’, F-F’ d1‧‧‧First direction d12, d13‧‧‧ direction d2‧‧‧Second direction d3‧‧‧third direction H1‧‧‧ First distance H2‧‧‧Second distance L1, L2, L3, L4, L5, L5’‧‧‧Width T1‧‧‧ First distance T1’, T1”, W1, W2, W3, W4‧‧‧ distance T2‧‧‧Second distance d1‧‧‧ First offset d2‧‧‧Second offset

FIG. 1A is a schematic top view of some components of a display device according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of the pixel structure of the display device according to section line A-A' of FIG. 1A. 1C is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line C-C' of FIG. 1A. FIG. 1D is a schematic cross-sectional view of the pixel structure of the display device according to section line B-B' of FIG. 1A. FIG. 1E is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line D-D' of FIG. 1A. FIG. 1F is an enlarged schematic diagram of the pixel structure 200B of the display panel of FIG. 1A. 2A is a schematic top view of some components of a display device according to another embodiment of the invention. 2B is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line E-E' of FIG. 2A. 3A is a schematic top view of some components of a display device according to yet another embodiment of the invention. 3B is a schematic cross-sectional view of the pixel structure of the display device according to the cross-sectional line F-F' of FIG. 3A. 4 is a schematic top view of some components of a display device according to yet another embodiment of the invention. 5 is a schematic top view of some components of a display device according to another embodiment of the invention. 6 is a schematic top view of some components of a display device according to yet another embodiment of the invention. 7 is a schematic top view of some components of a display device according to yet another embodiment of the present invention.

10‧‧‧Display device

100‧‧‧ substrate

100a, 100b‧‧‧edge

110‧‧‧Inner area

120‧‧‧ surrounding area

200A‧‧‧The first pixel structure

200B, 200F, 200I, 200L ‧‧‧ second pixel structure

200C, 200D, 200E, 200G, 200H, 200J, 200K, 200M ‧‧‧ third pixel structure

220‧‧‧First electrode

230‧‧‧The first embankment

232‧‧‧First opening

240‧‧‧Second embankment

242‧‧‧Second opening

A-A’, B-B’, C-C’, D-D’

d1‧‧‧First direction

d12, d13‧‧‧ direction

d2‧‧‧Second direction

d3‧‧‧third direction

Claims (15)

A display device, including: A substrate having an inner area and a peripheral area outside the inner area; and A plurality of pixel structures are provided on the substrate, and each of the pixel structures includes: A first electrode; A first bank layer, disposed on the first electrode, and having a first opening overlapping with part of the first electrode; A second bank layer, disposed on the first bank layer, and having a second opening overlapping with the first opening; A light-emitting layer disposed on the first electrode of the portion and located at the first opening of the first bank layer and the second opening of the second bank layer; and A second electrode disposed on the light-emitting layer; Wherein, the pixel structures include a first pixel structure disposed in the inner area and a second pixel structure disposed in the peripheral area, and a first opening of the second pixel structure and the second A second opening of the pixel structure has a first offset in a first direction. The display device as described in item 1 of the patent application range, wherein a first opening of the first pixel structure and a second opening of the first pixel structure have a first offset in the first direction , And the first offset of the second pixel structure is greater than the first offset of the first pixel structure. The display device as described in item 2 of the patent application scope, wherein the pixel structures further include a third pixel structure, the first pixel structure, the second pixel structure and the third pixel structure are along A direction from the inner region of the substrate to the peripheral region of the substrate is sequentially arranged; a first opening of the third pixel structure and a second opening of the third pixel structure are in the first direction It has a first offset, and the first offset of the third pixel structure is greater than the first offset of the second pixel structure. The display device according to item 1 of the patent application scope, wherein an edge of the first opening of the second pixel structure has a first point and a second point arranged in the first direction, the first The point is farther from the edge of the substrate than the second point; an edge of the second opening of the second pixel structure has a third point and a fourth point arranged in the first direction, the third point The distance between the second point and the fourth point in the first direction is greater than the distance between the first point and the third point in the first direction than the fourth point is farther from the edge of the substrate. The display device according to item 1 of the patent application scope, wherein the first opening of the second pixel structure and the second opening of the second pixel structure have a second offset in a second direction, And the first direction and the second direction are interleaved. The display device as described in item 5 of the patent application range, wherein a first opening of the first pixel structure and a second opening of the first pixel structure have a second offset in the second direction , And the second offset of the second pixel structure is greater than the second offset of the first pixel structure. The display device as described in item 6 of the patent application range, wherein the pixel structures further include a third pixel structure, the first pixel structure, the second pixel structure and the third pixel structure are along A direction from the inner area of the substrate to the peripheral area of the substrate is sequentially arranged; a first opening of the third pixel structure and a second opening of the third pixel structure are in the second direction There is a second offset, and the second offset of the third pixel structure is greater than the second offset of the second pixel structure. The display device according to item 5 of the patent application scope, wherein an edge of the first opening of the second pixel structure has a fifth point and a sixth point arranged in the second direction, the fifth The point is farther from the edge of the substrate than the sixth point; an edge of the second opening of the second pixel structure has a seventh point and an eighth point arranged in the second direction, the seventh point Farther from the edge of the substrate than the eighth point, a distance between the fifth point and the seventh point in the second direction is greater than a distance between the sixth point and the eighth point in the second direction. The display device as claimed in item 1 of the patent application, wherein a top surface of the light-emitting layer has a point overlapping with the center of the second opening in a third direction perpendicular to the substrate, from the point to the first electrode The distance of the top surface of is a first distance, and the distance between a boundary of the top surface of the light-emitting layer and the second bank layer to a top surface of the first bank layer is a second distance, the first distance Less than or equal to the second distance, and the second distance is less than or equal to 20 times the first distance. A display device, including: A substrate having an inner area and a peripheral area outside the inner area; and A plurality of pixel structures are provided on the substrate, and each of the pixel structures includes: At least one first electrode; A first bank layer, disposed on the first electrode, and having at least one first opening overlapping with part of the at least one first electrode; A second bank layer disposed on the first bank layer and having a second opening overlapping the at least one first opening; A light-emitting layer disposed on the first electrode of the portion and located on the at least one first opening of the first bank layer and the second opening of the second bank layer; and A second electrode disposed on the light-emitting layer; The pixel structures include a first pixel structure disposed in the inner area and a second pixel structure disposed in the peripheral area, at least a first opening of the second pixel structure is on the substrate A vertical projection area of is greater than a vertical projection area of at least one first opening of the first pixel structure on the substrate. The display device of claim 10, wherein at least one first electrode of the second pixel structure is a plurality of first electrodes separated from each other, and at least one first opening of the second pixel structure is each other A plurality of separated first openings, the first electrodes of the second pixel structure respectively overlap the first openings of the second pixel structure, and the at least one first opening of the second pixel structure The vertical projection area on the substrate is the sum of the vertical projection areas of the first openings of the second pixel structure on the substrate. The display device according to item 10 of the patent application scope, wherein at least one first opening of the second pixel structure and a second opening of the second pixel structure have a first offset in a first direction the amount. The display device as described in item 12 of the patent application range, wherein the at least one first opening of the second pixel structure and the second opening of the second pixel structure have a second offset in a second direction And the first direction and the second direction are interleaved. The display device of claim 10, wherein in a third direction perpendicular to the substrate, a top surface of the light-emitting layer has a point overlapping the center of the second opening, and the point reaches the first electrode The distance of the top surface of is a first distance, and the distance between a boundary of the top surface of the light-emitting layer and the second bank layer to a top surface of the first bank layer is a second distance, the first distance Less than or equal to the second distance, and the second distance is less than or equal to 20 times the first distance. The display device of claim 10, wherein a second projected area of a second opening of the second pixel structure on the substrate is larger than a second opening of the first pixel structure on the substrate A vertical projection area.

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