TWI696873B - Display apparatus - Google Patents

Abstract

A display apparatus according to embodiments of the present invention includes a plurality of sub-pixel regions. Each sub-pixel region includes at least two light emitting devices, a first electrode, a second electrode and a connection electrode. The at least two light emitting devices have distinct major wavelength ranges. The first electrode is electrically connected with a terminal of one of the at least two light emitting devices. The second electrode is electrically connected to the other terminal of the one of the at least two light emitting devices, and is electrically connected to one of the light emitting devices in an adjacent sub-pixel region. The two light emitting devices electrically connected to the same second electrode have substantially the same major wavelength range. The connection electrode is electrically connected between the second electrode and the two light emitting devices in adjacent sub-pixel regions with substantially the same major wavelength range.

Description

Display device

The present invention relates to a display device, and particularly to a light-emitting diode display device.

The light emitting diode has the advantages of high energy conversion efficiency, short reaction time and long service life. Therefore, in recent years, light-emitting diodes have become the main lighting source with both power saving and environmental protection features. In addition, due to the breakthrough in the size of the light-emitting diodes, a technology for transposing the light-emitting diodes into the pixel structure to form a micro LED display (micro LED display) has gradually appeared on the market.

The multiple sub-pixel areas of the micro light-emitting diode display have their respective colored lights. If light-emitting diodes of different colors are arranged in the middle area of each pixel, it may be caused by process deviation or improper design spacing design. Some pictures are not continuous or the color mixing is uneven.

The invention provides a display device, which can solve the problems of discontinuous or uneven color mixing of certain pictures, and can improve the resolution.

The display device of the present invention includes a plurality of sub-pixel areas. Each sub-pixel area includes at least two light-emitting elements, a first electrode, a second electrode, and a connection electrode. At least two light-emitting elements have different dominant wavelength ranges from each other. The first electrode is electrically connected to one end of one of the at least two light emitting elements. The second electrode is electrically connected to the other end of the one of the at least two light emitting elements, and is electrically connected to one of the light emitting elements of the adjacent sub-pixel regions. The two light emitting elements electrically connected to the same second electrode have substantially the same dominant wavelength range. The connecting electrode is electrically connected between the second electrode and the two light emitting elements respectively located in two adjacent sub-pixel regions and having substantially the same main wavelength range.

In some embodiments of the present invention, the display device further includes a transmission electrode. The transmission electrode is electrically connected between the first electrode and the two light emitting elements respectively located in two adjacent sub-pixel regions and having substantially the same main wavelength range.

In some embodiments of the present invention, the number of light-emitting elements of at least one of the plurality of sub-pixel regions is greater than or equal to 3.

In some embodiments of the present invention, the number of sub-pixel regions having less than 3 light-emitting elements is more than twice the number of the at least one sub-pixel region having more than 3 light-emitting elements.

In some embodiments of the present invention, at least two light emitting elements in the at least one sub-pixel region having more than three light emitting elements have substantially the same dominant wavelength range.

In some embodiments of the present invention, the main wavelength ranges of the plurality of light-emitting elements in the at least one sub-pixel region having more than 3 light-emitting elements are different from each other.

In some embodiments of the present invention, the dominant wavelength range of at least one light-emitting element in each sub-pixel region is 610 nm to 700 nm.

In some embodiments of the present invention, each sub-pixel region includes a plurality of first electrodes, and each light-emitting element is located between two adjacent ones of the plurality of first electrodes.

In some embodiments of the present invention, each sub-pixel area further includes a signal line. The signal line is electrically connected to one of the at least two light-emitting elements, and the extending direction of the signal line of each sub-pixel area is interlaced with the extending direction of the first electrode.

In some embodiments of the present invention, each adjacent at least three of the plurality of sub-pixel regions constitute a repeating unit, and the combination of the main wavelength ranges of the light-emitting elements of at least 3 sub-pixel regions in each repeating unit are different from each other .

In some embodiments of the present invention, the positions of the multiple light emitting elements in the repeating unit are symmetrically arranged with the center of the repeating unit.

In some embodiments of the present invention, the number of light-emitting elements in the sub-pixel area where the center of the repeating unit is located is greater than the number of light-emitting elements in the adjacent sub-pixel areas, respectively.

In some embodiments of the present invention, the multiple light-emitting elements in the sub-pixel area where the center of the repeating unit is located are adjacent to the center, and the multiple light-emitting elements in the sub-pixel area adjacent thereto are arranged in the sub-pictures The edge of the prime area.

In some embodiments of the present invention, the multiple sub-pixel regions in the repeating unit are arranged along the first direction. The display device includes a plurality of repeating units. A plurality of repeating units are arrayed along the first direction and the second direction, and the first direction and the second direction are staggered.

In some embodiments of the invention, the development of one of the multiple sub-pixel areas The number of light elements is greater than or equal to 3, and the center of the repeating unit overlaps the center of the sub-pixel area having more than 3 light-emitting elements.

In some embodiments of the invention, multiple second electrodes in the repeating unit surround the center of the repeating unit.

Based on the above, in the embodiment of the present invention, by making the second electrodes in each sub-pixel area more electrically connected to the light-emitting element in the adjacent sub-pixel area, the configuration of the light-emitting element in each sub-pixel area is more elasticity. In this way, more than two light-emitting elements with different dominant wavelength ranges can be arranged in each sub-pixel region. In addition, the position of the light-emitting elements in each sub-pixel area can be adjusted more flexibly, and the spacing between adjacent light-emitting elements can be adjusted to solve the problem of discontinuous picture or uneven color mixing. Furthermore, more than two equivalent pixels can be formed in a single repeating unit (or called pixel region) including multiple sub-pixel regions. In other words, the resolution of the display device can be improved.

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

10: display device

C: Center

D1: First direction

D2: Second direction

E1: first electrode

E2: second electrode

EP1: the first equivalent pixel

EP2: Second-class school pixels

LDB: blue light emitting element

LDG: green light emitting element

LDR: red light emitting element

LDW: white light emitting element

S: Signal cable

SP1, SP2, SP3, SPa, SPb, SPc, SPc-1, SPc-2, SPd, SPd-1, SPd-2: sub-book area

U, U1, U2, U3, U4, U5, U6: repeating unit

W1: transmission electrode

W2: Connect electrode

ΔX: displacement

FIG. 1A is a schematic diagram of a repeating unit composed of multiple sub-pixel regions in some embodiments of the present invention.

FIG. 1B is a schematic diagram of a display device including multiple repeating units according to some embodiments of the present invention.

2-7 are repetitions of display devices according to other embodiments of the invention Schematic diagram of the unit.

FIG. 1A is a schematic diagram of a repeating unit U composed of multiple sub-pixel regions according to some embodiments of the present invention. FIG. 1B is a schematic diagram of a display device 10 including a plurality of repeating units U according to some embodiments of the present invention. For the sake of brevity, FIG. 1B omits illustration of some components shown in FIG. 1A (including the first electrode E1, the second electrode E2, the transmission electrode W1, the connection electrode W2, and the signal line S).

1A and 1B, the display device 10 of the embodiment of the present invention includes a plurality of repeating units U formed on an array substrate (not shown). Each repeating unit U includes multiple sub-pixel regions. In some embodiments, each repeating unit U may include 3 sub-pixel regions. For example, each repeating unit U may include a sub-pixel area SP1, a sub-pixel area SP2 and a sub-pixel area SP3 arranged along the first direction D1. In some embodiments, as shown in FIG. 1B, a plurality of repeating units U may be arrayed along the first direction D1 and the second direction D2. The first direction D1 and the second direction D2 cross each other, for example, are perpendicular to each other. In other embodiments, the number of sub-pixel regions in each repeating unit U may be greater than three. In addition, those skilled in the art can adjust the arrangement of the sub-pixel regions in each repeating unit U according to actual needs, and the invention is not limited to this.

Each sub-pixel area includes at least two light emitting elements (for example, at least two of red light emitting elements LDR, green light emitting elements LDG, and blue light emitting elements LDB described below). In some embodiments, each light-emitting element may be a light-emitting diode The body is, for example, a micro light emitting diode (micro LED) or a millimeter light emitting diode (mini LED). For example, the light emitting diode can be transposed from the wafer into a plurality of sub-pixel regions on the array substrate (not shown). By arranging more than two light-emitting elements in each sub-pixel area, and the color light emitted by them is different, the disorder of the arrangement position of the monochromatic light in the pixels can be increased. By flexibly adjusting the position of the light-emitting element in each sub-pixel area and adjusting the spacing between adjacent light-emitting elements, the problem of discontinuous display or uneven color mixing can be solved. In addition, each sub-pixel area may further include a pixel circuit (illustration omitted). The pixel circuit may include at least one active element (such as a transistor) and at least one passive element (such as a capacitor), and electrically connected to each light-emitting element, thereby driving each light-emitting element.

In some embodiments, the dominant wavelength ranges of at least two light emitting elements in each sub-pixel region are different from each other. For example, the sub-pixel area SP1 includes a red light emitting element LDR and a green light emitting element LDG. The sub-pixel area SP2 may include a green light emitting element LDG, a blue light emitting element LDB, and two red light emitting elements LDR. In addition, the sub-pixel area SP3 may include a red light emitting element LDR and a blue light emitting element LDB. The main wavelength range of the aforementioned red light emitting element LDR may be 610 nm to 700 nm. The main wavelength range of the green light emitting element LDG may be 490 nm to 570 nm. The main wavelength range of the blue light emitting element LDB may be 254 nm to 470 nm. In these embodiments, each sub-pixel region has at least one red light emitting element LDR. In addition, the combinations of the main wavelength ranges of the three sub-pixel regions in the repeating unit U are different from each other. For example, the sub-pixel area SP1 emits red light and green light, the sub-pixel area SP2 emits red light, blue light and green light, and the sub-pixel area SP3 emits red light and blue light. In addition, in some changes In the embodiment, the red light-emitting element LDR, the green light-emitting element LDG, the blue light-emitting element LDB, etc. may be changed into magenta, yellow, or cyan light-emitting elements.

In addition, in some embodiments, the number of light-emitting elements of at least one of the plurality of sub-pixel regions (for example, sub-pixel SP2) is greater than or equal to three. The number of sub-pixel areas with less than 3 light-emitting elements (for example, sub-pixel area SP1 and sub-pixel area SP3) is the number of sub-pixel areas with more than 3 light-emitting elements (for example, sub-pixel area SP2) More than twice the number (for example, twice). With the above design and the arrangement of the light emitting elements, the color mixing effect of the display device 10 can be improved, thereby improving the display quality. In addition, at least two light-emitting elements in the sub-pixel region having three or more light-emitting elements have substantially the same main wavelength range. For example, the sub-pixel area SP2 has two red light emitting elements LDR. In some embodiments, the area of the sub-pixel area (e.g., sub-pixel area SP2) with more than 3 light-emitting elements is equal to the sub-pixel area (e.g., sub-pixel area SP1 or The ratio of the areas of the sub-pixel areas SP3) may be greater than 1 and less than or equal to 2.

Each sub-pixel area further includes a first electrode E1 electrically connected to the light-emitting element. In some embodiments, the light emitting element is a light emitting diode, and the first electrode E1 may be electrically connected to the cathode of the light emitting diode. For example, the first electrode E1 may be an electrode pad, or may be an electrode located above the through hole electrically connected to the pixel circuit. In some embodiments, each sub-pixel region may include multiple first electrodes E1. Each first electrode E1 may extend along the first direction D1, and each light emitting element is located between adjacent first electrodes E1. The first electrodes E1 of the adjacent sub-pixel regions in the first direction D1 may be connected to each other and coupled to a reference voltage. Each light-emitting element can be electrically connected to the most The adjacent first electrode E1. In some embodiments, each light-emitting element may be electrically connected to the adjacent first electrode E1 via the transmission electrode W1. In addition, adjacent light-emitting elements can share the same transmission electrode W1. For example, the green light emitting element LDG and the blue light emitting element LDB in the sub-pixel area SP2 are electrically connected to the adjacent first electrode E1 via the same transmission electrode W1. In addition, at least two light emitting elements having the same dominant wavelength range in adjacent sub-pixel regions may also share the same transmission electrode W1. For example, the two red light emitting elements LDR in the sub-pixel area SP1 and its left sub-pixel area in FIG. 1A are electrically connected to the adjacent first electrode E1 via the same transmission electrode W1.

Each sub-pixel area further includes a second electrode E2. A light-emitting element in each sub-pixel area is electrically connected to the second electrode E2 in the sub-pixel area, and the second electrode E2 is further electrically connected to another light-emitting element in the adjacent sub-pixel area. In addition, the two light emitting elements connected to the same second electrode E2 have a similar main wavelength range. In other words, the dominant wavelength range of the two light-emitting elements connected to the same second electrode E2 needs to be within a dominant wavelength range defined above. For example, if the two light-emitting elements are red light-emitting elements LDR, the main wavelength range of the two light-emitting elements falls within the range of 610 nm to 700 nm. Due to display color considerations, the dominant wavelength ranges of the two light-emitting elements may be slightly different. In some embodiments, the dominant wavelength ranges of the two light-emitting elements can also be substantially the same. To further illustrate, the second electrode E2 in the sub-pixel area SP1 is electrically connected to the green light-emitting element LDG, and the second electrode E2 is further electrically connected to the green light-emitting element LDG in the sub-pixel area SP2. Similarly, the second electrode E2 in the sub-pixel area SP2 is electrically connected to the red light emitting element LDR, and this second The two electrodes E2 are more electrically connected to the red light emitting element LDR in the sub-pixel area SP1. In some embodiments, the light-emitting element is a light-emitting diode, and the second electrode E2 may be electrically connected to the anode of the light-emitting diode. For example, the second electrode E2 may be an electrode pad, or may be an electrode located above the through hole electrically connected to the pixel circuit. In addition, the number of the second electrodes E2 of the sub-pixel regions (for example, the sub-pixel region SP2) having more than 3 light-emitting elements may be the sub-pixel regions (for example, the sub-pixel regions) having less than 3 light-emitting elements SP1 or the sub-pixel area SP3) twice the number of second electrodes E2.

In some embodiments, each light-emitting element may be electrically connected to the corresponding second electrode E2 via the connection electrode W2. In other words, the connection electrode W2 is electrically connected between the second electrode E2 and two light-emitting elements having substantially the same main wavelength range in two adjacent sub-pixel regions. In addition, in some embodiments, the resistance value of the connection electrode W2 can be changed by adjusting the length, width, thickness, material, and/or pattern of the connection electrode W2. In this way, the input current received by each light-emitting element can be controlled, thereby adjusting the brightness of each light-emitting element. In other words, the connecting electrode W2 of the embodiment of the present invention is not limited to the patterns and sizes shown in the drawings, and those with ordinary knowledge in the art can adjust them according to product requirements.

One end of each light emitting element is electrically connected to the second electrode E2 and the connection electrode W2, and the other end is electrically connected to the first electrode E1 and the transmission electrode W1. The signal application through the second electrode E2 and the first electrode E1 can cause the light emitting element to generate light. In the illustration, the relative relationship between the light-emitting element, the connection electrode W2, and the transfer electrode W1 is indicated only by a line segment. The electrically connected contacts may be different in plane but overlap in the vertical direction or be in the same plane but not in contact in the vertical direction.

In some embodiments, each sub-pixel area further includes a signal line S. The signal line S is electrically connected to a light-emitting element in a sub-pixel area through a pixel circuit (not shown), and is further electrically connected to another of the adjacent sub-pixel areas of the sub-pixel area. On the same main wavelength range. For example, although FIG. 1A does not show the connection relationship between the signal line S and the light emitting element for simplicity, the signal line S in the sub-pixel area SP1 may be electrically connected to the green of the same sub-pixel area The light-emitting element LDG is more electrically connected to another green light-emitting element LDG in the sub-pixel area SP2. The electrical connection between the signal line S and the green light-emitting element LDG includes a direct connection through the pixel circuit in the middle, or an indirect connection in which other control switches or storage capacitors are connected in series. In some embodiments, the signal line S in each sub-pixel area may be electrically connected to the corresponding light-emitting element via the active element in the pixel circuit (not shown) in the sub-pixel area (the illustration is omitted) and the first electrode E1 element. In other embodiments, the signal line S in each sub-pixel area can also be directly connected to the corresponding light-emitting element. In addition, in some embodiments, the sub-pixel regions having two light emitting elements with substantially the same main wavelength range may include two signal lines S. For example, the sub-pixel area SP2 includes two signal lines S, which are electrically connected to a red light-emitting device LDR in the sub-pixel area SP2, and are respectively connected to the sub-pixel area SP1 and the sub-pixel area SP3 Another red light-emitting element LDR. In this way, two red light emitting elements LDR can be controlled by two signal lines S, respectively. In addition, in some embodiments, the signal line S may extend along the second direction D2. In other words, the extending direction of the signal line S and the extending direction of the first electrode E1 may alternate with each other.

In some embodiments, the configuration of the light emitting elements in the repeating unit U is symmetrical Here, the center C of the repeating unit U (please refer to FIG. 1B ), and the center of the repeating unit U may overlap the center of the sub-pixel area (for example, the sub-pixel area SP2) having more than three light-emitting elements. For example, the green light emitting element LDG and the red light emitting element LDR in the sub-pixel area SP1 are disposed at two corners of the repeating unit U, and the blue light emitting element LDB and the red light emitting element in the sub-pixel area SP3 The LDR is arranged in the other two corners of the repeating unit U. In addition, the green light-emitting element LDG, the blue light-emitting element LDB, and the two red light-emitting elements LDR in the sub-pixel area SP2 are adjacent (for example, surround) to the center of the repeating unit U (that is, the center of the sub-pixel area SP2) . In these embodiments, the number of light-emitting elements in the sub-pixel regions where the center of the repeating unit U is located is greater than the number of light-emitting elements in the adjacent sub-pixel regions, respectively. For example, the center of the repeating unit U is located in the sub-pixel area SP2, and the sub-pixel area SP2 has four light-emitting elements, and the sub-pixel area SP1 and the sub-pixel area SP3 each have two light-emitting elements.

Referring to FIG. 1B, in some embodiments, the light-emitting elements in each repeating unit U may have substantially the same arrangement, and a plurality of repeating units U are arrayed along the first direction D1 and the second direction D2. In this way, the display device 10 can form a plurality of first equivalent pixels EP1 and a plurality of second equivalent pixels EP2. The light-emitting elements of the four repeating units U connected to each other at four corners A first equivalent pixel EP1 is constituted, and a plurality of light-emitting elements surrounding its center in the sub-pixel area SP2 of each repeating unit U constitute a second equivalent pixel EP2. For example, the first equivalent pixel EP1 includes green light-emitting elements LDG, blue light-emitting elements LDB, and two red light-emitting elements in two sub-pixel areas SP1 and two sub-pixel areas SP3 connected to each other LDR, and the second equivalent pixel EP2 includes a green light emitting element LDG, a blue light emitting element LDB, and two red light emitting elements LDR in the sub-pixel area SP2. In these embodiments, both the first equivalent pixel EP1 and the second equivalent pixel EP2 include a green light-emitting element LDG, a blue light-emitting element LDB, and two red light-emitting elements LDR, but the arrangement is different from each other. The plurality of first equivalent pixels EP1 and the plurality of second equivalent pixels EP2 respectively form a plurality of columns extending in the first direction D1 and arranged in the second direction D2, and a plurality of columns composed of the first equivalent pixels EP1 The columns and the plurality of columns composed of the second equivalent pixels EP2 are alternately arranged along the second direction D2, thereby forming an array. In addition, the majority row composed of the second equivalent pixels EP2 has a displacement ΔX in the first direction D1 with respect to the majority row composed of the first equivalent pixels EP1. In some embodiments, the array composed of the first equivalent pixel EP1 and the second equivalent pixel EP2 is symmetrical with respect to the first direction D1 and the second direction D2. In these embodiments, each repeating unit U (also referred to as a pixel region) including 3 sub-pixel regions overlaps with 2 equivalent pixels (including 4 first-quarter equivalent pixels) Pixel EP1 and a second equivalent pixel EP2). In this way, the resolution of the display device 10 can be improved while making the displayed screen continuous.

Based on the above, in this embodiment of the present invention, by making the second electrode E2 in each sub-pixel area more electrically connected to the light-emitting element in the adjacent sub-pixel area, the configuration of the light-emitting element in each sub-pixel area is more For flexibility. In this way, more than two light-emitting elements with different dominant wavelength ranges can be arranged in each sub-pixel region. In addition, the position of the light-emitting elements in each sub-pixel area can be adjusted more flexibly, and the spacing between adjacent light-emitting elements can be adjusted to solve the problem of discontinuous picture or uneven color mixing. Furthermore, it can be formed in a single repeating unit (or pixel area) including multiple sub-pixel areas More than two equivalent pixels. In other words, the resolution of the display device can be improved.

2 is a schematic diagram of a repeating unit U1 of a display device according to some embodiments of the present invention.

Please refer to FIGS. 1A and 2. The repeating unit U1 shown in FIG. 2 is similar to the repeating unit U shown in FIG. 1A except that the sub-pixel area SP2 in the repeating unit U1 includes only a single second electrode E2. In this way, the second electrode E2 in the sub-pixel area SP2 and the two red light emitting elements LDR can be electrically connected to each other, and the second electrode E2 can be electrically connected to the sub-pixel area SP1 and the sub-pixel The red light emitting element LDR in the area SP3. In other words, in the embodiment shown in FIG. 2, the second electrode E2 in the sub-pixel area SP2 can be electrically connected to 4 light emitting elements (for example, 4 red light emitting elements LDR).

FIG. 3 is a schematic diagram of a repeating unit U2 of a display device according to some embodiments of the present invention.

Please refer to FIGS. 2 and 3. The repeating unit U2 shown in FIG. 3 is similar to the repeating unit U1 shown in FIG. 2, except that the dominant wavelength ranges of the light emitting elements in the sub-pixel region SP2 in the repeating unit U2 are different from each other. For example, the sub-pixel area SP2 has three light emitting elements, including a green light emitting element LDG, a blue light emitting element LDB, and a red light emitting element LDR. In these embodiments, the second electrode E2 in the sub-pixel area SP2 is electrically connected to the three red light emitting elements LDR in the sub-pixel area SP1, the sub-pixel area SP2 and the sub-pixel area SP3, respectively. In addition, the sub-pixel area SP2 may have a single signal line S.

4 is a repeating unit U3 of a display device according to some embodiments of the present invention Schematic.

Please refer to FIGS. 2 and 4. The repeating unit U3 shown in FIG. 4 is similar to the repeating unit U1 shown in FIG. 2, except that the configuration of the second electrode E2a in the repeating unit U3 is different from the second electrode E2 in the repeating unit U1 Configuration. Specifically, in the repeating unit U3, the second electrode E2a in the sub-pixel area SP1 is provided on the line connecting two green light-emitting elements LDG connected to the sub-pixel area SP1 and the sub-pixel area SP2 In the extension direction (not shown). Similarly, the second electrode E2a in the sub-pixel area SP3 is disposed in the extending direction (not shown) of the line connecting the two blue light-emitting elements LDB connected between the sub-pixel area SP3 and the sub-pixel area SP2 . In addition, the arrangement of the second electrode E2a in the sub-pixel area SP2 shown in FIG. 4 is the same as the arrangement of the second electrode E2 in the sub-pixel area SP2 shown in FIG. 2, that is, it is provided in the sub-pixel area SP2 The side of the two red light emitting elements LDR with respect to the center of the sub-pixel area SP2. In some embodiments, the three second electrodes E2a in the repeating unit U3 surround the center of the repeating unit U3 (that is, the center of the sub-pixel area SP2). For example, the three second electrodes E2a of the repeating unit U3 are respectively located at three vertices of a triangular geometry (as shown by the dotted line in FIG. 4) and surround the center of the repeating unit U3. In addition, the light-emitting element above the sub-pixel area SP2 is located within the area surrounded by the triangle. In this way, it is possible to ensure uniform color mixing and continuous picture, and at the same time make the line between the connecting electrode W2 and the second electrode E2a shorter to reduce the resistance.

5 is a schematic diagram of a repeating unit U4 of a display device according to some embodiments of the present invention. The repeating unit U4 shown in FIG. 5 is similar to the repeating unit U shown in FIG. 1A, and only the differences between the two are described below, and the same or similar parts will not be repeated.

Referring to FIG. 5, the repeating unit U4 includes sub-pixel regions SPa, sub-pixel regions SPb, sub-pixel regions SPc, and sub-pixel regions SPd arranged along the first direction D1. Each sub-pixel region includes two light emitting elements whose main wavelength ranges are different from each other. For example, the sub-pixel area SPa includes a red light emitting element LDR and a green light emitting element LDG. The sub-pixel area SPb includes a red light emitting element LDR and a green light emitting element LDG. The sub-pixel area SPc includes a white light emitting element LDW and a blue light emitting element LDB. The sub-pixel area SPd includes a white light emitting element LDW and a blue light emitting element LDB. In some embodiments, the white light-emitting element LDW is composed of a mixture of polychromatic light, so it may be a broad band with no obvious dominant wavelength range, or a light emission spectrum composed of multiple dominant wavelength ranges in the visible light band. In these embodiments, the center of the repeating unit U4 may overlap the interface between the sub-pixel area SPb and the sub-pixel area SPc. In addition, the plurality of light emitting elements in the repeating unit U4 may be symmetrical to the center of the repeating unit U4. In some embodiments, the light-emitting elements in the sub-pixel area SPb and the sub-pixel area SPc surround the center of the repeating unit U4, and the light-emitting elements in the sub-pixel area SPa and the sub-pixel area SPd are disposed in the repeating unit U4 4 corners. In addition, in these embodiments, each repeating unit U4 may include four second electrodes E2. The four second electrodes E2 may be disposed along the edge of the repeating unit U4, but the present invention is not limited thereto. Furthermore, each sub-pixel area may include a single signal line S.

6 is a schematic diagram of a repeating unit U5 of a display device according to some embodiments of the present invention.

Please refer to FIGS. 5 and 6. The repeating unit U5 shown in FIG. 6 is similar to the repeating unit U4 shown in FIG. 5, except that the sub-pixel area SPc-1 and the sub-picture in the repeating unit U5 The arrangement of the light-emitting elements in the pixel area SPd-1 is different from the sub-pixel area SPc and the sub-pixel area SPd of the repeating unit U4. Specifically, in the repeating unit U5, the sub-pixel area SPc-1 includes a red light-emitting element LDR and a blue light-emitting element LDB, and the sub-pixel area SPd-1 includes a red light-emitting element LDR and a blue light-emitting element LDB. In other words, by replacing the white light emitting element LDW in the sub-pixel area SPc and the sub-pixel area SPd shown in FIG. 5 with the red light-emitting element LDR, the sub-pixel area SPc-1 and the sub-pixel area SPc-1 shown in FIG. 6 can be formed. Sub-pixel area SPd-1. In the embodiments shown in FIG. 6, each sub-pixel area includes a red light-emitting element LDR. The red light emitting element LDR is less sensitive to human eyes and has poor luminous efficiency. When each sub-pixel area is set, it can achieve a better feeling of continuous display or more uniform color mixing when viewed by human eyes.

7 is a schematic diagram of a repeating unit U6 of a display device according to some embodiments of the present invention.

Please refer to FIGS. 6 and 7. The repeating unit U6 shown in FIG. 7 is similar to the repeating unit U5 shown in FIG. 6, except that the sub-pixel area SPc-2 and the sub-pixel area in the repeating unit U6 shown in FIG. 7 The arrangement of the light-emitting elements in SPd-2 is different from the sub-pixel area SPc-1 and the sub-pixel area SPd-1 in the repeating unit U5 shown in FIG. 6. Specifically, by mirroring the position of the first electrode E1 between the blue light-emitting element LDB and the red light-emitting element LDR in the sub-pixel area SPc-1 shown in FIG. The sub-pixel area SPc-2 shown. Similarly, by mirroring the position of the first electrode E1 between the blue light emitting element LDB and the red light emitting element LDR in the sub-pixel area SPd-1 shown in FIG. The displayed sub-pixel area SPd-2.

In summary, in the embodiment of the present invention, the second electrode in each sub-pixel area can be electrically connected to the light-emitting element in the adjacent sub-pixel area, so that the configuration of the light-emitting element in each sub-pixel area More flexible. In this way, more than two light-emitting elements with different dominant wavelength ranges can be arranged in each sub-pixel region. In addition, the position of the light-emitting elements in each sub-pixel area can be adjusted more flexibly, and the spacing between adjacent light-emitting elements can be adjusted to solve the problem of discontinuous picture or uneven color mixing. Furthermore, more than two equivalent pixels can be formed in a single repeating unit (or called pixel region) including multiple sub-pixel regions. In other words, the resolution of the display device can be improved and the display quality can be improved.

Although the present invention has been disclosed as above by the embodiments, 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.

D1: First direction D2: Second direction E1: First electrode E2: Second electrode LDB: Blue light emitting element LDG: Green light emitting element LDR: Red light emitting element S: Signal lines SP1, SP2, SP3: Sub pixels Zone U: Repeating unit W1: Transmission electrode W2: Connection electrode

Claims (16)

A display device includes: a plurality of sub-pixel regions, each of which includes: at least two light-emitting elements, wherein the at least two light-emitting elements have different dominant wavelength ranges from each other; a first electrode, electrically connected To one end of one of the at least two light emitting elements; a second electrode electrically connected to the other end of the one of the at least two light emitting elements, and electrically connected to the adjacent sub-pixel area One of the light-emitting elements, wherein the two light-emitting elements electrically connected to the second electrode have substantially the same main wavelength range; and a connection electrode electrically connected to the second electrode and respectively located in two adjacent sub-elements Between the two light-emitting elements having substantially the same main wavelength range in the pixel area. The display device as described in item 1 of the patent application scope further includes a transmission electrode electrically connected to the first electrode and respectively located in the two adjacent sub-pixel regions having substantially the same main wavelength range Between the two light emitting elements. The display device according to item 1 of the patent application scope, wherein the number of the at least two light emitting elements of at least one of the sub-pixel regions is greater than or equal to 3. The display device according to item 3 of the patent application range, wherein the number of sub-pixel regions having less than 3 light-emitting elements is more than twice the number of the at least one sub-pixel region having more than 3 light-emitting elements. The display device according to item 3 of the patent application scope, wherein at least two light-emitting elements in the at least one sub-pixel region having more than three light-emitting elements have substantially the same dominant wavelength range. The display device according to item 3 of the patent application range, wherein the main wavelength ranges of the at least two light-emitting elements in the at least one sub-pixel region having more than three light-emitting elements are different from each other. The display device according to item 1 of the patent application scope, wherein the main wavelength range of at least one light-emitting element in each of the sub-pixel regions is 610 nm to 700 nm. The display device according to item 1 of the patent application scope, wherein each of the sub-pixel regions includes a plurality of first electrodes, and each of the light-emitting elements is located between two adjacent ones of the first electrodes. The display device as described in item 1 of the patent application scope, wherein each of the sub-pixel areas further includes a signal line electrically connected to one of the at least two light-emitting elements, and each of the sub-pixels The extension direction of the signal line in the region intersects the extension direction of the first electrode. The display device as described in Item 3 of the patent application range, wherein at least three adjacent ones of the sub-pixel regions constitute a repeating unit, and the light-emitting elements of the at least three sub-pixel regions in each repeating unit The combinations of dominant wavelength ranges are different from each other. The display device according to item 10 of the patent application scope, wherein the positions of the light-emitting elements in the repeating unit are symmetrically arranged around a center of the repeating unit. The display device as described in item 11 of the patent application range, wherein the number of the at least two light emitting elements in the sub-pixel area where the center of the repeating unit is located is greater than the at least two light-emitting elements of the adjacent sub-pixel areas The number of components. According to the display device described in Item 12 of the patent application scope, the at least two light emitting elements in the sub-pixel area where the center of the repeating unit is located are adjacent to the center, and the at least two light-emitting elements in the adjacent sub-pixel area A light-emitting element is arranged at the edge of the sub-pixel area. The display device as described in item 11 of the patent application range, wherein the sub-pixel regions in the repeating unit are arranged along a first direction, the display device includes a plurality of repeating units, along the first direction and a second The direction array is arranged, the first direction and the second direction are staggered. The display device as recited in item 13 of the patent application range, wherein the number of the at least two light emitting elements of one of the sub-pixel regions is greater than or equal to 3, and the center of the repeating unit overlaps with 3 The center of the sub-pixel area of more than one light-emitting element. The display device according to item 10 of the patent application scope, wherein the second electrodes in the repeating unit surround a center of the repeating unit.

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