CN109166906B

CN109166906B - LED display

Info

Publication number: CN109166906B
Application number: CN201811107050.4A
Authority: CN
Inventors: 刘品妙; 谢嘉定; 林雨潔
Original assignee: AU Optronics Corp
Current assignee: AUO Corp
Priority date: 2018-07-16
Filing date: 2018-09-21
Publication date: 2021-04-16
Anticipated expiration: 2038-09-21
Also published as: TW202006434A; TWI670546B; CN109166906A

Abstract

The invention discloses a light-emitting diode display, which includes a substrate, a plurality of first signal lines, a plurality of second signal lines, first sub-pixels and second sub-pixels. The first signal lines and the second signal lines define a plurality of pixel areas on the substrate. The first sub-pixel is located in the first pixel area and includes a plurality of first light-emitting elements located at a plurality of first corners of the first pixel area. The second sub-pixel is located in the second pixel area and includes a plurality of second light-emitting elements located at a plurality of second corners of the second pixel area. The positions of the first light-emitting elements in the first pixel area and the positions of the second light-emitting elements in the second pixel area are in a mirror relationship with the first mirror axis. The first distance between two adjacent first light-emitting elements is greater than the first spacing between the closest first light-emitting element and the second light-emitting element in the first sub-pixel and the second sub-pixel.

Description

Light emitting diode display

Technical Field

The present invention relates to a display technology, and more particularly, to a light emitting diode display.

Background

With the development of optoelectronic semiconductor technology, the development of flat panel displays has been driven. The flat panel displays have a wide variety, wherein the light emitting diode displays do not require an additional backlight module, and can achieve the function of displaying images through the light emitting elements arranged in the pixel regions.

The light emitting elements of the conventional led display are uniformly arranged and fixedly disposed in the pixel region. In other words, from a pixel region, the light emitting elements are uniformly disposed at the middle of the pixel region. However, the arrangement of the light emitting devices is prone to cause the display quality to be degraded due to the poor process precision. In addition, the distance between the adjacent light emitting devices in the adjacent pixel regions is relatively long, so that the process variation is likely to cause color mixing unevenness due to the relatively large difference, resulting in poor quality of the displayed image or generation of moire (Mura).

Disclosure of Invention

An embodiment of the invention provides a light emitting diode display, which includes a substrate, a plurality of first signal lines, a plurality of second signal lines, a first sub-pixel, and a second sub-pixel. The plurality of first signal lines are arranged on the substrate and extend along a first direction. The plurality of second signal lines are arranged on the substrate and extend along a second direction. The first direction is different from the second direction, the second signal lines and the second signal lines are mutually staggered to define a plurality of pixel areas on the substrate, each pixel area is a polygon, and the pixel areas are respectively a first pixel area and a second pixel area. The first sub-pixel is located in a first pixel region of the substrate and includes a plurality of first light emitting elements respectively located at a plurality of first corners of the first pixel region. The second sub-pixel is located in a second pixel region of the substrate and includes a plurality of second light emitting elements respectively located at a plurality of second corners of the second pixel region. Wherein the first edge of the first sub-pixel region is adjacent to the second edge of the second pixel region. The positions of the first light-emitting elements in the first pixel region and the positions of the second light-emitting elements in the second pixel region are in a mirror relationship by a first mirror axis, and the first mirror axis is positioned between a first edge of the first pixel region and a second edge of the adjacent second pixel region. Two adjacent first light-emitting elements in the first light-emitting elements are separated by a first distance, the first light-emitting element and the second light-emitting element which are closest to each other in the first sub-pixel and the second sub-pixel are separated by a first distance, and the first distance is larger than the first distance.

An embodiment of the invention provides a light emitting diode display, which includes a substrate, a first sub-pixel and a second sub-pixel. The first sub-pixel is located in a first pixel region of the substrate and includes a plurality of first light emitting elements respectively located at a plurality of first corners of the first pixel region. The second sub-pixel is located in a second pixel region of the substrate and includes a plurality of second light emitting elements respectively located at a plurality of second corners of the second pixel region. Wherein the first edge of the first sub-pixel region is adjacent to the second edge of the second pixel region. The positions of the first light-emitting elements in the first pixel region and the positions of the second light-emitting elements in the second pixel region are in a mirror relationship by a first mirror axis, and the first mirror axis is positioned between a first edge of the first pixel region and a second edge of the adjacent second pixel region. Two adjacent first light-emitting elements in the first light-emitting elements are separated by a first distance along a first extending axis, the first light-emitting element and the second light-emitting element which are closest to each other in the first sub-pixel and the second sub-pixel are separated by a first distance, and the first distance is larger than the first distance. A first included angle is formed between the first extending shaft and the first mirror reflection shaft and ranges from 18 degrees to 72 degrees.

Drawings

Fig. 1 is a schematic top view of an led display according to an embodiment of the invention.

Fig. 2 is a partial schematic view of fig. 1.

Fig. 3 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 4 is a partial schematic view of fig. 3.

Fig. 5 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 6 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 7 is a partial schematic view of fig. 6.

Fig. 8 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 9 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 10 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Fig. 11 is a schematic top view of a light emitting diode display according to another embodiment of the invention.

Wherein, the reference numbers:

100 LED display 110 substrate

120 first signal line 121 trunk

122 branch 130 second signal line

140 sub-pixel 141 first sub-pixel

142 second sub-pixel 143 third sub-pixel

A1 first corner A2 second corner

Third corner C1 component of A3

C2 component D1 first edge

D2 second edge D3 third edge

D4 fourth edge D5 fifth edge

E Circuit element E1 first Circuit element

E2 second Circuit element EX1 first extension shaft

Second extension axis of EX2 third extension axis of EX3

H1 first distance H2 second distance

H3 third distance MA1 first mirror axis

MA2 second mirror axis N1 first Direction

N2 second direction

L1, L11, L12 first light emitting element

L2, L21, L22 second light emitting element

L3, L31, L32 third light emitting element

S1 first spacing S2 second spacing

S3 third pitch P pixel region

P1 first pixel region P2 second pixel region

P3 third pixel region PL power supply line

θ₁First included angle theta₂Second included angle

θ₃Third included angle

Detailed Description

For the purpose of clarity, the terms "first," "second," "third," and the like, as used herein, are used to distinguish one element, region, or section from another, the same or similar element, region, or section, but do not limit the particular element, region, or section.

Fig. 1 is a schematic top view of an led display according to an embodiment of the invention. Fig. 2 is a partial schematic view of fig. 1. Referring to fig. 1 and 2, the light emitting diode display 100 includes a substrate 110, a plurality of first signal lines 120, a plurality of second signal lines 130, a plurality of sub-pixels 140, such as the first sub-pixel 141 and the second sub-pixel 142 shown in fig. 1 and 2. Herein, the first signal lines 120 and the second signal lines 130 are disposed on the substrate 110 in a staggered manner, so as to define a plurality of pixel regions P on the substrate 110, and each pixel region P is a polygon. In other words, in the embodiment, the pixel region P refers to a region defined by any two adjacent first signal lines 120 and any two adjacent second signal lines 130 crossing each other, and each of the sub-pixels 140 is located in each of the pixel regions P. The shape of the pixel region P is determined by the design of the led display according to different application considerations or display characteristics, and is only an example, not a limitation of the present invention. In addition, the substrate 110, the first signal line 120, the second signal line 130, the circuit element E1, and the circuit element E2 are not partially shown in the drawings to clearly show the arrangement of the light emitting elements in the sub-pixel 140.

The first signal lines 120 extend along the first direction N1 and are disposed on the substrate 110 at intervals, and the second signal lines 130 extend along the second direction N2 and are disposed on the substrate 110 at intervals. In one embodiment, the first signal line 120 may be one of a scan line and a data line, and the second signal line 130 is the other of the scan line and the data line.

In one embodiment, two adjacent pixel regions P (the first pixel region P1 and the second pixel region P2) are taken as an example for explanation.

The first subpixel 141 is disposed adjacent to the second subpixel 142. The first sub-pixel 141 is located in the first pixel region P1 of the substrate 110, and the second sub-pixel 142 is located in the second pixel region P2 of the substrate 110. As shown in fig. 2, the first edge D1 of the first pixel region P1 is adjacent to the second edge D2 of the second pixel region P2. It should be noted that, since the pixel region P refers to a region defined by any two adjacent first signal lines 120 and any two adjacent second signal lines 130 crossing each other, each edge of the pixel region P (for example, the first edge D1, the second edge D2, the third edge D3, the fourth edge D4, etc.) refers to an edge of a plurality of first signal lines and a plurality of second signal lines, or an edge under a repetitive periodic unit caused by a repetitive arrangement of a plurality of similar elements or other circuits. For convenience of illustration, the first edge D1, the second edge D2, and the third edge D3 shown in fig. 2 are indicated by solid lines.

The first sub-pixel 141 includes a plurality of first light emitting elements L1, and the first light emitting elements L1 are respectively located at a plurality of first corners a1 of the first pixel region P1. Two adjacent first light-emitting elements L1 of the first light-emitting elements L1 are separated from each other by a first distance H1 along the first extension axis EX 1. In one implementation aspect, as shown in fig. 1 and fig. 2, the first sub-pixel 141 includes two first light-emitting elements L1, here the first light-emitting element L11 and the first light-emitting element L12, and are respectively located at the first corners a1 of two opposite corners of the first pixel region P1, and the distance between the two first light-emitting elements L11 and L12 is the first distance H1 along the first extension axis EX 1.

The second sub-pixel 142 includes a plurality of second light emitting elements L2, and the second light emitting elements L2 are respectively located at a plurality of second corners a2 of the second pixel region P2. Two adjacent second light emitting elements L2 of the second light emitting elements L2 are spaced apart from each other by a second distance H2 along the second extension axis EX 2. In one implementation aspect, as shown in fig. 1 and fig. 2, the second sub-pixel 142 includes two second light emitting elements L2, here a second light emitting element L21 and a second light emitting element L22, respectively located at the second corners a2 of two opposite corners of the second pixel region P2, and the distance between the two second light emitting elements L21 and L22 is a second distance H2 along the second extension axis EX 2. It should be noted that the number of the first light emitting elements L1 and the second light emitting elements L2 shown in the drawings depends on the electrical design of the applied led display, and therefore, the number of the first light emitting elements L1 and the second light emitting elements L2 is only an example and is not a limitation to the embodiment of the present invention.

The positions of the first light emitting elements L1 in the first pixel region P1 and the positions of the second light emitting elements L2 in the second pixel region P2 are mirrored by the first mirror axis MA 1. The first mirror axis MA1 is located between the first edge D1 of the first pixel region P1 and the second edge D2 of the adjacent second pixel region P2. That is, with respect to the first mirror axis MA1, the light emitting elements (here, the first light emitting elements L1 and the second light emitting elements L2) of the two sub-pixels 140 (here, the first sub-pixel 141 and the second sub-pixel 142) of the adjacent two pixel regions P (here, the first pixel region P1 and the second pixel region P2) are configured to mirror each other. In other words, each vertical distance of each first light emitting element L1 of the first sub-pixel 141 relative to the first mirror axis MA1 is equal to each vertical distance of each second light emitting element L2 of the corresponding second sub-pixel 142 relative to the first mirror axis MA 1. In one embodiment, the first mirror axis MA1 and the first extension axis EX1 form a first angle θ₁First angle of inclination theta₁Is between 18 and 72 degrees. Similarly, the first mirror axis MA1 and the second extension axis EX2 form a second included angle theta₂Second angle theta₂Between 18 degrees and 72 degrees, and the second included angle theta₂At a first angle theta₁Are equal.

The first light emitting element L11 and the second light emitting element L21 closest to each other in the first sub-pixel 141 and the second sub-pixel 142 have a first distance S1 therebetween, and the first distance H1 is greater than the first distance S1. In other words, the distance (first distance S1) between the first light emitting element L11 closest to the second light emitting element L21 in the second sub-pixel 142 in the first sub-pixel 141 and the second light emitting element L21 closest to the second sub-pixel 142 is smaller than the distance (first distance H1) between the two first light emitting elements L11, L12 in the same first sub-pixel 141. Likewise, the second distance H2 is greater than the first spacing S1. It should be noted that the definition of the distance and the pitch between the light emitting elements (e.g., the first distance H1, the second distance H2, the first pitch S1, the second pitch S2, etc.) refers to the shortest distance from one light emitting element to another light emitting element, such as the distance from the edge or the surface of one light emitting element to the edge or the surface of another light emitting element.

Here, for the same sub-pixel 140, the light emitting devices are located at non-adjacent corners of the pixel region P, and at least one light emitting device of the sub-pixel 140 is closest to at least one light emitting device of the adjacent sub-pixel 140, so that the distance between the nearest light emitting devices respectively located in the adjacent pixel regions P is closer than the distance between the nearest light emitting devices respectively located in the same pixel region P, and the color mixing of the light emitted by the adjacent light emitting devices respectively located in the adjacent pixel regions P is more uniform, and the color shift effect or the moire pattern when the manufacturing process is changed can be more reduced due to the design.

In one embodiment, the first edge D1 and the third edge D3 of the first pixel region P1 are connected to form one of the first corners a1, and the ratio of the lengths of the first edge D1 and the third edge D3 is between 1 and 2. In this regard, the ratio between the first edge D1 and the third edge D3 of the first pixel region P1 of the present invention is smaller than the ratio between the short edge and the long edge of the conventional pixel region, i.e., the length difference between the first edge D1 and the third edge D3 of the first pixel region P1 of the present invention is smaller. Therefore, the distance between the nearest neighboring light emitting devices in the neighboring pixel regions P is preferably shorter than the distance between the neighboring light emitting devices in the same pixel region P, so that the light emission of the neighboring light emitting devices in the neighboring pixel regions P is more uniform, and the color shift effect or the moire can be reduced if the process is changed.

In another embodiment, when the ratio of the lengths of the first edge D1 and the third edge D3 is between 1 and 2, the first angle θ₁26 ° or more and 63 ° or less. Second included angle theta₂At a first angle theta₁Is equal toAnd thus the second angle theta₂The angle may be 26 ° or more and 63 ° or less. In this case, the arrangement of the light emitting devices within the angle range is particularly preferable, and the space utilization is also advantageous, so that the light mixing of the light emitting devices adjacent to the pixel regions P can be more uniform, and the color shift effect or the moire fringes can be more reduced if the process is changed.

The circuit elements of each sub-pixel may have different configurations according to the arrangement of the light-emitting elements in the pixel region P. In one embodiment, as shown in fig. 1, the first sub-pixel 141 may include a first circuit element E1. In a vertical projection to the substrate 110, the first circuit element E1 is located between the first light emitting elements L1 in the first pixel region P1. Since the first light emitting elements L1 are located on the first corners a1 of the first pixel region P1, the central space of the first pixel region P1 can be used for disposing the first circuit element E1. Here, the space utilization of the first pixel region P1 is improved, and the number of circuits or electrical elements disposed outside the first pixel region P1 is also reduced. In one implementation, as shown in fig. 1, the first circuit element E1 does not overlap with the first light emitting elements L1. In another implementation (not shown), the first circuit element E1 may partially overlap with at least one of the first light-emitting elements L1. In one implementation (not shown), the first circuit element E1 is electrically connected to the first light emitting elements L1 for providing power or other signals. The first circuit element E1 can be, but is not limited to, one or more thin film transistors, capacitors, chips, traces, vias, and/or other circuits or electrical elements.

In another embodiment, as shown in fig. 1, the second sub-pixel 142 may include a second circuit element E2. In a vertical projection to the substrate 110, the second circuit element E2 is located between the second light emitting elements L2 in the second pixel region P2. Since the second light emitting elements L2 are located on the second corners a2 of the second pixel region P2, the central space of the second pixel region P2 can be used for disposing the first circuit element E1. Here, the space utilization of the second pixel region P2 is improved, and the number of circuits or electrical elements disposed outside the second pixel region P2 is also reduced. In one implementation, as shown in fig. 1, the second circuit element E2 does not overlap with the second light emitting elements L2. In another implementation (not shown), the second circuit element E2 may partially overlap with at least one of the second light emitting elements L2. In one embodiment, the second circuit element E2 is electrically connected to the second light-emitting elements L2 for providing power or other signals. The second circuit element E2 can be, but is not limited to, one or more thin film transistors, capacitors, chips, traces, vias, and/or other circuits or electrical elements.

In another embodiment, as shown in fig. 1, the position of the first circuit element E1 in the first pixel region P1 is mirrored in the second pixel region P2 by the first mirror axis MA1 with the second circuit element E2. That is, with respect to the first mirror axis MA1, the arrangement of the two circuit elements (here, the first circuit element E1 and the second circuit element E2) located in the adjacent two pixel regions P (here, the first pixel region P1 and the second pixel region P2) are mirror images of each other. In other words, the relative relationship between the positions of the first circuit element E1 and the second circuit element E2 is arranged in a mirror relationship with the first mirror axis MA 1.

In another embodiment, three adjacent pixel regions P (the first pixel region P1, the second pixel region P2 and the third pixel region P3) are exemplified as follows. Here, the structures, angles, positions, and the like of the first pixel region P1 and the second pixel region P2 are substantially the same as those of the previous embodiments, and therefore the same or similar parts are not repeated.

In this embodiment, as shown in fig. 1 to 2, the third sub-pixel 143 is disposed adjacent to the first sub-pixel 141. The third sub-pixel 143 is located in the third pixel region P3 of the substrate 110, and the fourth edge D4 of the third pixel region P3 is adjacent to the third edge D3 of the first pixel region P1.

The third sub-pixel 143 includes a plurality of third light emitting elements L3. The third light emitting elements L3 are respectively located in a plurality of third slopes A3 of the third pixel region P3. Two adjacent third light emitting elements L3 of the third light emitting elements L3 are separated from each other by a third distance H3 along a third extending axis EX 3. In one implementation aspect, as shown in fig. 1 and fig. 2, the third sub-pixel 143 includes two third light emitting elements L31 and L32 respectively located at two diagonal third corners A3 of the third pixel region P3, and the two third light emitting elements L31 and L32 are separated from each other by a third distance H3 along the third extending axis EX 3.

In an embodiment, as shown in fig. 1 to 2, the first light emitting element L11 and the third light emitting element L31 closest to each other in the first sub-pixel 141 and the third sub-pixel 143 have a second distance S2, and the first distance H1 is greater than the second distance S2. In other words, the distance (the second distance S2) between the first light-emitting element L11 closest to one of the third light-emitting elements L31 in the third sub-pixel 143 in the first sub-pixel 141 and the third light-emitting element L31 closest to the third sub-pixel 143 is smaller than the distance (the first distance H1) between the two first light-emitting elements L11, L12 in the same first sub-pixel 141. Likewise, the third distance H3 is greater than the second spacing S2. Therefore, the distance between the two light emitting elements located in the adjacent pixel regions P is shorter than the distance between the two adjacent light emitting elements located in the same pixel region P, so that the light emitting and color mixing of the adjacent light emitting elements located in the adjacent pixel regions P are more uniform, and the color shift effect or the cloud stripe is more reduced when the manufacturing process is changed.

In one embodiment, as shown in fig. 1, 2, 6, and 7, a component C1 of the first distance H1 parallel to the extending direction along the first spacing S1 is greater than the first spacing S1, and a component C2 of the first distance H1 parallel to the extending direction along the second spacing S2 is greater than the second spacing S2. The component C1 is a projection component of the first distance H1 perpendicularly projected onto a projection line along the extending direction of the first distance S1, and the component C2 is a projection component of the first distance H1 perpendicularly projected onto a projection line along the extending direction of the second distance S2. In this way, the distance between the most adjacent light emitting elements respectively located in the adjacent pixel regions P is preferably shorter than the distance between the adjacent light emitting elements located in the same pixel region P, and the color mixture of the light emitted from the adjacent light emitting elements respectively located in the adjacent pixel regions P is further preferably uniform. The third light-emitting element L3 is arranged according to the light emissionThe design of the diode display is dependent. In some embodiments, as shown in fig. 1 to 2, the positions of the first light emitting elements L1 in the first pixel region P1 and the positions of the third light emitting elements L3 in the third pixel region P3 are mirrored by the second mirror axis MA 2. The second mirror axis MA2 is located between the third edge D3 of the first pixel region P1 and the fourth edge D4 of the adjacent third pixel region P3. That is, with respect to the second mirror axis MA2, the light emitting elements (here, the first light emitting elements L1 and the third light emitting elements L3) of the two sub-pixels 140 (here, the first sub-pixel 141 and the third sub-pixel 143) located in the adjacent two pixel regions P (here, the first pixel region P1 and the third pixel region P3) are configured to mirror each other. In other words, each vertical distance of each first light emitting element L1 of the first sub-pixel 141 relative to the second mirror axis MA2 is substantially equal to each vertical distance of each third light emitting element L3 of the corresponding third sub-pixel 143 relative to the second mirror axis MA 2. It should be noted that the term substantially equal distance is intended to include design similarities or similarities, or the same or similar concepts, or the same or similar structures but with some slight variations that may occur during the manufacturing process. Thus, the idea of approximately equal distances may include the expected result of tolerances due to manufacturing conditions or techniques. In one embodiment, the second mirror axis MA2 and the third extension axis EX3 form a third angle θ₃Third angle of inclination theta₃Is between 18 and 72 degrees. In one embodiment, the length ratio of the first edge D1 to the third edge D3 may be equal to the ratio of the second distance S2 to the first distance S1, such that the light emitting devices (here, the first light emitting devices L1 and the third light emitting devices L3) located in different pixel regions (here, the first pixel region P1, the second pixel region P2 and the third light emitting devices L3) are provided.

Fig. 3 is a schematic top view of a light emitting diode display according to another embodiment of the invention. Fig. 4 is a partial schematic view of fig. 3. Referring to fig. 3 and fig. 4, the led display of the present embodiment is similar to the led display of the previous embodiment, and similar components are denoted by the same reference numerals, and only differences between the two will be described below, and the same or similar parts will not be repeated. Specifically, the light emitting diode display shown in fig. 3 omits the substrate 110, the first signal line 120 and the second signal line 130. The biggest difference between the led display of fig. 3 and 4 and the led display of the previous embodiment is that each pixel region P has a hexagonal configuration, and each pixel region P has six other adjacent pixel regions P, and three of the adjacent pixel regions P (the first pixel region P1, the second pixel region P2, and the third pixel region P3) are taken as an example for explanation. In this embodiment, the first sub-pixel 141, the second sub-pixel 142 and the third sub-pixel 143 are disposed adjacent to each other two by two. The first sub-pixel 141 is located in the first pixel region P1 of the substrate 110, the second sub-pixel 142 is located in the second pixel region P2 of the substrate 110, and the third sub-pixel 143 is located in the third pixel region P3 of the substrate 110. The first sub-pixel 141 includes three first light emitting elements L1, and is respectively located at three non-adjacent first corners a1 of the first pixel region P1, and two adjacent first light emitting elements L1 are separated by a first distance H1. The second sub-pixel 142 includes three second light emitting elements L2 respectively located at three non-adjacent second corners a2 of the second pixel region P2, and two adjacent second light emitting elements L2 are spaced apart by a second distance H2. The third sub-pixel 143 includes three third light emitting elements L3 respectively located at three non-adjacent third corners A3 of the third pixel region P3, and a third distance H3 is between two adjacent third light emitting elements L3.

In one embodiment, as shown in fig. 3, the sub-pixels 140 may share the same circuit element E, for example, three sub-pixels 140 (e.g., the first sub-pixel 141, the third sub-pixel 143, and the fourth sub-pixel 144 in fig. 3) share the same circuit element E. The circuit element E is located between the plurality of light emitting elements in the three pixel regions P in a vertical projection to the substrate 110. Since each light emitting device of each sub-pixel 140 can be located at a corner of a portion of the corresponding pixel region P, the circuit device E can be disposed in a space of the corner of the adjacent sub-pixels 140 where no light emitting device is disposed. In this case, the remaining space utilization rate between the adjacent pixel regions P is improved. In one embodiment, the circuit element E is electrically connected to at least one light emitting element of the three adjacent sub-pixels 140 respectively to provide power or other signals. The circuit element E may be, but is not limited to, one or more thin film transistors, capacitors, wafers, traces, vias, and/or other circuitry or electrical elements.

In one embodiment, as shown in fig. 4, the first light emitting element L11 and the second light emitting element L21 closest to each other in the first sub-pixel 141 and the second sub-pixel 142 have a first distance S1 therebetween, and the first distance H1 is greater than the first distance S1. The first light emitting element L11 and the third light emitting element L31 closest to each other in the first sub-pixel 141 and the third sub-pixel 143 are separated by a second distance S2, and the first distance H1 is greater than the second distance S2. The second light emitting element L21 and the third light emitting element L31, which are closest to each other in the second sub-pixel 142 and the third sub-pixel 143, are separated by a third distance S3, the second distance H2 is greater than the third distance S3, and the second distance H2 is greater than the first distance S1. Likewise, the third distance H3 is greater than the third spacing S3 and the third distance H3 is greater than the second spacing S2. Therefore, the distance between the three nearest light-emitting elements respectively located in the adjacent pixel regions P is smaller than the distance between two adjacent light-emitting elements located in the same pixel region P, and the light-emitting color mixing of the adjacent light-emitting elements respectively located in the adjacent pixel regions P is more uniform, and the color shift effect or the cloud stripe is more reduced when the manufacturing process is changed.

Fig. 5 is a schematic top view of a light emitting diode display according to another embodiment of the invention. Referring to fig. 5, the biggest difference between the led display of the present embodiment and the led display of fig. 3 and 4 is that each pixel region P is configured in a triangle, and three adjacent pixel regions P (the first pixel region P1, the second pixel region P2, and the third pixel region P3) are taken as an example for illustration. In this embodiment, the first sub-pixel 141, the second sub-pixel 142 and the third sub-pixel 143 are disposed adjacent to each other. The first sub-pixel 141 is located in the first pixel region P1 of the substrate 110, the second sub-pixel 142 is located in the second pixel region P2 of the substrate 110, and the third sub-pixel 143 is located in the third pixel region P3 of the substrate 110. The first sub-pixel 141 includes three first light emitting elements L1, and is respectively located at three first corners a1 of the first pixel region P1, and a first distance H1 is between two adjacent first light emitting elements L1. The second sub-pixel 142 includes three second light emitting elements L2 respectively located at three second corners a2 of the second pixel region P2, and two adjacent second light emitting elements L2 are spaced apart by a second distance H2. The third sub-pixel 143 includes three third light emitting elements L3 respectively located in three third corners A3 of the third pixel region P3, and two adjacent third light emitting elements L3 are separated by a third distance H3. As in the previous embodiments, the distance between two nearest light emitting elements of adjacent pixel regions P is smaller than the distance between two adjacent light emitting elements in the same pixel region P.

Fig. 6 is a schematic top view of a light emitting diode display according to another embodiment of the invention. Fig. 7 is a partial schematic view of fig. 6. Fig. 8 is a schematic top view of a light emitting diode display according to another embodiment of the invention. As shown in fig. 6 to 8, the positions of the first light emitting elements L1 in the first pixel region P1 and the positions of the third light emitting elements L3 in the third pixel region P3 are not mirrored. In one embodiment, as shown in fig. 6 to 7, the area of the third pixel region P3 is larger than the area of the first pixel region P1 and larger than the area of the second pixel region P2, and herein, when the two third light emitting devices L3 are respectively located at the third corners A3 of two opposite corners of the third pixel region P3, the third distance H3 between the two third light emitting devices L3 is larger than the first distance H1 and larger than the second distance H2. In another embodiment, as shown in fig. 8, the fourth edge D4 of the third pixel region P3 is adjacent to one of the first corners a1 of the first pixel region P and one of the second corners a2 of the second pixel region P2. The two third light emitting elements L3 are respectively located at the fourth edge D4 and the fifth edge D5 (i.e., adjacent to the fourth edge D4 and the fifth edge D5) opposite to the fourth edge D4, rather than being respectively located at the third corner a 3. In one embodiment, the third light emitting device L31 is adjacent to the fourth edge D4, and the third light emitting device L32 is adjacent to the fifth edge D5. The third light emitting element L31 adjacent to the fourth edge D4 has the same pitch as the first light emitting element L11 and the second light emitting element L21, i.e., the second pitch S2 between the third light emitting element L3 and the first light emitting element L1 is equal to the third pitch S3 between the third light emitting element L3 and the second light emitting element L2.

In one embodiment, the shape of the pixel region P is substantially defined according to the shape, the extending direction (here, the first direction N1 and the second direction N2) and the arrangement of the first signal line 120 and the second signal line 130. In one embodiment, as shown in fig. 1, the first signal lines 120 and the second signal lines 130 may be straight lines, and the extending directions of the first signal lines 120 (the first direction N1) and the second signal lines 130 (the second direction N2) may be substantially perpendicular to each other. Herein, the pixel regions P are all quadrilateral. In another embodiment, as shown in fig. 9, the first signal lines 120 may be straight lines and the second signal lines 130 may be zigzag lines, and the extending directions of the first signal lines 120 (the first direction N1) and the second signal lines 130 (the second direction N2) may be substantially perpendicular to each other. Herein, the pixel regions P are all hexagonal. In another embodiment, as shown in fig. 10, the first signal lines 120 have a trunk 121 and branches 122 connected to the trunk 121. The second signal lines 130 may be straight lines. The extending direction of the main portion 121 of the first signal lines 120 (the first direction N1) and the extending direction of the second signal lines 130 (the second direction N2) may substantially intersect at an angle (not 90 °). Herein, the pixel regions P are all triangular.

In one embodiment, as shown in fig. 11, the led display 100 may further include a plurality of power lines PL, each of which passes through the light-emitting elements L1 (here, the first light-emitting elements L1, the second light-emitting elements L2 and the third light-emitting elements L3) in the pixel regions P (here, the first pixel region P1, the second pixel region P2 and the third pixel region P3) to provide voltage to the light-emitting elements. Thus, the space utilization of the pixel regions P can be improved.

In one embodiment, the colors of the light provided by the light emitting elements in the same pixel region P are the same, and the colors of the light provided by the light emitting elements in the adjacent pixel regions P are different. In other words, the colors of the light provided by the first light-emitting elements L1 are the same, the colors of the light provided by the second light-emitting elements L2 are the same, and the colors of the light provided by the third light-emitting elements L3 are the same. The color of light provided by each first light-emitting element L1 is different from the color of light provided by each second light-emitting element L2 and the color of light provided by each third light-emitting element L3, and the color of light provided by each second light-emitting element L2 is different from the color of light provided by each third light-emitting element L3. Herein, the first sub-pixel 141, the second sub-pixel 142 and the third sub-pixel 143 may be, but not limited to, a red sub-pixel, a blue sub-pixel, a green sub-pixel, a white sub-pixel or a yellow sub-pixel, and the first sub-pixel 141, the second sub-pixel 142 and the third sub-pixel 143 are sub-pixels with different colors.

In summary, in the light emitting diode display provided by the embodiments of the invention, the pixel areas are polygonal, and the light emitting elements are disposed at the corners of the same pixel area, and each light emitting element is closest to at least one of the light emitting elements in the adjacent pixel areas, so that the distance between the nearest light emitting elements respectively located in the adjacent pixel areas is closer than the distance between the nearest light emitting elements located in the same pixel area. Therefore, the light-emitting mixed colors of the adjacent light-emitting elements respectively positioned in the adjacent pixel areas can be better and uniformly, and the color cast influence or the cloud-shaped stripes caused by the process variation can be further reduced. The difference from the conventional organic light emitting diode display is that when the light emitting elements are disposed at different corners of the same pixel region and at least one of the light emitting elements in the pixel region adjacent to the light emitting element is closer, the circuit element can be further disposed between two light emitting elements in the same pixel region or between two light emitting elements in the adjacent pixel regions, thereby further improving the space utilization of the pixel region.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A light emitting diode display, comprising:

a substrate;

a plurality of first signal lines arranged on the substrate and extending along a first direction;

a plurality of second signal lines disposed on the substrate and extending along a second direction, wherein the first direction is different from the second direction, and the first signal lines and the second signal lines are interlaced with each other to define a plurality of pixel regions on the substrate, each pixel region being a polygon, wherein the pixel regions include a first pixel region and a second pixel region;

a first sub-pixel located in the first pixel region of the substrate, the first sub-pixel comprising:

a plurality of first light emitting elements respectively located at a plurality of first corners of the first pixel region; and a second sub-pixel located in the second pixel region of the substrate, a first edge of the first sub-pixel region being adjacent to a second edge of the second pixel region, the second sub-pixel comprising:

a plurality of second light emitting elements respectively located at a plurality of second corners of the second pixel region;

wherein the positions of the first light-emitting elements in the first pixel region and the positions of the second light-emitting elements in the second pixel region are in a mirror relationship by a first mirror axis, and the first mirror axis is located between the first edge of the first pixel region and the second edge of the adjacent second pixel region;

two adjacent first light-emitting elements in the first light-emitting elements are arranged along a first extending axis, a first distance is reserved between the two adjacent first light-emitting elements along the first extending axis, two adjacent second light-emitting elements in the second light-emitting elements are arranged along a second extending axis, a second distance is reserved between the two adjacent second light-emitting elements along the second extending axis, a first distance is reserved between the first light-emitting element and the second light-emitting element which are closest to each other in the first sub-pixel and the second sub-pixel, and the first distance is larger than the first distance;

the light emitting diode display further comprises a plurality of power lines, wherein each power line is arranged between the first light emitting elements and the second light emitting elements to provide voltage to the light emitting elements.

2. The light-emitting diode display defined in claim 1 wherein the first sub-pixel further comprises a first circuit element, the first circuit element being located between the first light-emitting elements in a vertical projection to the substrate.

3. The light-emitting diode display defined in claim 2 wherein the first circuit elements do not overlap the first light-emitting elements in a vertical projection onto the substrate.

4. The light-emitting diode display defined in claim 2 wherein the second sub-pixel further comprises a second circuit element, the second circuit element being located between the second light-emitting elements in a vertical projection to the substrate.

5. The light-emitting diode display defined in claim 4 wherein the position of the first circuit element in the first pixel region is mirrored with the first mirror axis with the position of the second circuit element in the second pixel region.

6. The light-emitting diode display defined in claim 1 further comprising a circuit element electrically connected to at least one of the first light-emitting elements and to at least one of the second light-emitting elements.

7. The light-emitting diode display defined in claim 1 wherein the first edge of the first pixel region is connected to a third edge of the first pixel region to form one of the first corners, and the ratio of the lengths of the first edge to the third edge is between 1 and 2.

8. The light-emitting diode display defined in claim 1 wherein the first axis of extension and the first axis of mirror have a first included angle between 18^°～72^°。

9. The light-emitting diode display defined in claim 8 wherein the second axis of extension has a second angle with the first axis of mirror, the second angle being between 18 degrees^°～72^°。

10. The light-emitting diode display defined in claim 9 wherein the first angle is equal to the second angle.

11. The light-emitting diode display defined in claim 1 wherein the colors of the light provided by the first light-emitting elements are the same, the colors of the light provided by the second light-emitting elements are the same, and the color of the light provided by each of the first light-emitting elements is different from the color of the light provided by each of the second light-emitting elements.

12. The light-emitting diode display of claim 1, further comprising a third sub-pixel located in a third pixel region of the substrate, a third edge of the first pixel region being adjacent to a fourth edge of the third pixel region, the third sub-pixel comprising:

and a plurality of third light emitting elements respectively located in a plurality of third corner of the third pixel region.

13. The light-emitting diode display defined in claim 12 wherein the positions of the first light-emitting elements in the first pixel region and the positions of the third light-emitting elements in the third pixel region are mirrored by a second mirror axis, and the second mirror axis is located between the third edge of the first pixel region and the fourth edge of the adjacent third pixel region.

14. The light-emitting diode display defined in claim 13 wherein the first and third light-emitting elements closest to each other in the first and third pixel regions are separated by a second pitch, and the first distance is greater than the second pitch.

15. The led display of claim 14, wherein the ratio of the length of the first edge to the third edge is equal to the ratio of the second pitch to the first pitch.

16. The light-emitting diode display defined in claim 12 wherein the first light-emitting elements provide light of the same color, the second light-emitting elements provide light of the same color, the third light-emitting elements provide light of the same color, each of the first light-emitting elements provides light of a color different from that of each of the second light-emitting elements and that of each of the third light-emitting elements, and each of the second light-emitting elements provides light of a color different from that of each of the third light-emitting elements.

17. The light-emitting diode display defined in claim 12 wherein the third pixel area is larger than the first pixel area and larger than the second pixel area.

18. The light-emitting diode display of claim 1, further comprising a third sub-pixel located in a third pixel region of the substrate, an edge of the third pixel region being adjacent to one of the first corners and one of the second corners, and the third sub-pixel comprising a plurality of third light-emitting elements, one of the third light-emitting elements being located at the edge and having the same pitch as the closest one of the first light-emitting elements and the closest one of the second light-emitting elements, respectively.

19. The light-emitting diode display defined in claim 18 wherein the first light-emitting element and the third light-emitting element that are closest to each other are separated by a second distance, and the first distance is greater than the second distance.

20. A light emitting diode display, comprising:

a substrate;

a first sub-pixel located in a first pixel region of the substrate, the first sub-pixel comprising:

a plurality of first light emitting elements respectively located at a plurality of first corners of the first pixel region; and a second sub-pixel located in a second pixel region of the substrate, a first edge of the first pixel region being adjacent to a second edge of the second pixel region, the second sub-pixel comprising:

wherein a first included angle is formed between the first extending axis and the first mirror reflection axis, and the first included angle is between 18^°～72^°；