Display device

Abstract

The utility model discloses a display device which comprises a driving substrate, a plurality of bonding pad pairs located on the driving substrate and light-emitting chips electrically connected with the bonding pad pairs in a one-to-one correspondence mode. Wherein a first bonding pad of the bonding pad pair is electrically connected with a first electrode of the light-emitting chip, and a second bonding pad of the bonding pad pair is electrically connected with a second electrode of the light-emitting chip; the plurality of bonding pad pairs comprise a plurality of first bonding pad pairs and at least one second bonding pad pair; the arrangement sequence of the first bonding pad and the second bonding pad in the first bonding pad pair in the first direction is opposite to the arrangement sequence of the first bonding pad and the second bonding pad in the second bonding pad pair in the first direction. In this way, the first electrodes of the light-emitting chips can be prevented from being uniformly arranged on one side, and the second electrodes of the light-emitting chips can be prevented from being uniformly arranged on the other side, so that the short edge directions of oblique cracks of the light-emitting chips are prevented from being in the same direction, the color cast problem of the display device can be solved, the uneven light emitting problem is avoided, and the viewing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a display device. Background Art

[0002] Light Emitting Diode (LED) display technology refers to the display technology that uses LED chips directly as light-emitting units. As the requirements for the resolution and display effect of display devices become higher and higher, LED display devices usually use Mini LED (Mini Light Emitting Diode, Mini LED) chips or Micro LED (Micro Light Emitting Diode, Micro LED) chips as light-emitting units.

[0003] Currently, Mini LED chips or Micro LED chips basically adopt a flip-chip structure. Due to the material and process aspects of the Mini LED chip or Micro LED chip, the light distribution curve in the short side oblique crack direction of the Mini LED chip or Micro LED chip is asymmetric on the left and right. When the current Mini LED chip or Micro LED chip is arranged, the positive and negative poles of the chip are generally set uniformly, that is, the short sides of the oblique crack of the chip are placed in the same direction. Since the light distribution curve of the Mini LED chip or Micro LED chip is consistent with the light distribution curve of the display device, when viewing from the left and right sides of the display device, it is easy to feel color cast and uneven light emission, affecting the subjective viewing effect. Utility Model Content

[0004] The display device provided by the present disclosure includes: a driving substrate having a plurality of pad pairs on the driving substrate; the plurality of pad pairs are arranged in an array along a first direction and a second direction; the first direction and the second direction intersect; and

[0005] A plurality of light-emitting chips are located on the driving substrate and are electrically connected to the plurality of pad pairs on the driving substrate in a one-to-one correspondence;

[0006] The pad pair includes a first pad and a second pad, and the first pad and the second pad are arranged along the first direction; the light-emitting chip includes a first electrode and a second electrode; the first pad is used to electrically connect the first electrode of the light-emitting chip, and the second pad pair is used to electrically connect the second electrode of the light-emitting chip;

[0007] The plurality of pad pairs include: a plurality of first pad pairs and at least one second pad pair; the arrangement order of the first pads and the second pads in the first pad pairs along the first direction is opposite to the arrangement order of the first pads and the second pads in the second pad pairs along the first direction.

[0008] In some embodiments of the present disclosure, the number of the first pad pairs included in the plurality of pad pairs is equal to the number of the second pad pairs.

[0009] In some embodiments of the present disclosure, a plurality of first pad pairs are arranged into a plurality of first pad pair columns along the second direction, and a plurality of second pad pairs are arranged into a plurality of second pad pair columns along the second direction; the first pad pair columns and the second pad pair columns are alternately arranged along the first direction.

[0010] In some embodiments of the present disclosure, a plurality of first pad pairs are arranged into a plurality of first pad pair rows along the first direction, and a plurality of second pad pairs are arranged into a plurality of second pad pair rows along the first direction; the first pad pair rows and the second pad pair rows are alternately arranged along the second direction.

[0011] In some embodiments of the present disclosure, the first pad pair and the second pad pair are alternately arranged along the first direction; the first pad pair and the second pad pair are alternately arranged along the second direction.

[0012] In some embodiments of the present disclosure, at least two adjacent pad pairs arranged along the second direction are divided into a pad group, and the number of pad pairs included in each pad group is the same;

[0013] The pad group is divided into a first pad group and a second pad group; the pad pairs in the first pad group are all the first pad pairs, and the pad pairs in the second pad group are all the second pad pairs;

[0014] The first pad groups and the second pad groups are alternately arranged along the first direction; and / Alternatively, the first pad group and the second pad group are alternately arranged in sequence along the second direction.

[0015] In some embodiments of the present disclosure, three pad pairs arranged along the second direction constitute a pad group, and the wavelengths of emitted light of the three light-emitting chips electrically connected to the pad group are different;

[0016] One or two pad pairs in the pad group are the second pad pairs, and the remaining two pad pairs in the pad group are the first pad pairs.

[0017] In some embodiments of the present disclosure, the three light-emitting chips electrically connected to the pad group are respectively a first light-emitting chip, a second light-emitting chip and a third light-emitting chip;

[0018] The first light emitting chip is used to emit red light, the second light emitting chip is used to emit green light, and the third light emitting chip is used to emit blue light.

[0019] In some embodiments of the present disclosure, the light-emitting chip is an LED chip, a Mini LED chip or a Micro LED chip.

[0020] In some embodiments of the present disclosure, the light emitting surface of the light emitting chip is rectangular, the long side of the light emitting surface of the light emitting chip is parallel to the first direction, and the short side of the light emitting surface of the light emitting chip is parallel to the second direction.

[0021] In the display device provided by the present disclosure, the display device includes: a driving substrate, a plurality of pad pairs located on the driving substrate, and a light-emitting chip electrically connected to the plurality of pad pairs in a one-to-one correspondence; wherein the first pad of the pad pair is electrically connected to the first electrode of the light-emitting chip, and the second pad of the pad pair is electrically connected to the second electrode of the light-emitting chip; the plurality of pad pairs include: a plurality of first pad pairs and at least one second pad pair; the arrangement order of the first pad and the second pad in the first pad pair along the first direction is opposite to the arrangement order of the first pad and the second pad in the second pad pair along the first direction. In this way, the first electrodes of the light-emitting chips can be avoided from being uniformly arranged on one side and the second electrodes uniformly arranged on the other side, thereby avoiding the short side directions of the oblique cracks of the light-emitting chips from being in the same direction, thereby improving the color cast problem of the display device, avoiding the problem of uneven light emission, and improving the viewing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 One of the structural schematic diagrams of the display device provided in the embodiment of the utility model;

[0023] Figure 2 A second structural schematic diagram of a display device provided in an embodiment of the utility model;

[0024] Figure 3 One of the schematic diagrams of the light distribution curve provided in the embodiment of the utility model;

[0025] Figure 4 A second schematic diagram of a light distribution curve provided in an embodiment of the utility model;

[0026] Figure 5 A third schematic diagram of a light distribution curve provided in an embodiment of the utility model;

[0027] Figure 6 A fourth schematic diagram of a light distribution curve provided in an embodiment of the utility model;

[0028] Figure 7 A third structural schematic diagram of a display device provided in an embodiment of the utility model;

[0029] Figure 8 A fourth structural schematic diagram of a display device provided in an embodiment of the utility model;

[0030] Fig. 9 A schematic diagram of the structure of a pad pair group provided in an embodiment of the utility model;

[0031] Fig.10 A fifth structural diagram of a display device provided in an embodiment of the utility model;

[0032] Fig.11 A sixth structural diagram of a display device provided in an embodiment of the utility model;

[0033] Fig.12 The seventh structural diagram of the display device provided by the embodiment of the utility model;

[0034] Fig.13 This is an eighth structural schematic diagram of a display device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. And in the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0037] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual proportions, and are only intended to illustrate the contents of the utility model. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0038] Light Emitting Diode (LED) display technology refers to display technology that uses LED chips directly as light-emitting units. As the requirements for the resolution and display effects of display devices become higher and higher, Mini LED (Mini Light Emitting Diode, Mini LED for short) chips or Micro LED (Micro Light Emitting Diode, Micro LED for short) chips are usually used as light-emitting units in LED display devices. Mini LED chips or Micro LED chips are miniaturized LED chips, and their sizes can reach the micron level. For example, the size of Mini LED chips is less than 500μm, and the size of Micro LED chips is less than 100μm. When the size of the LED chip is reduced to the pixel level, Mini LED chips or Micro LED chips can be directly used as light-emitting units for image display.

[0039] At present, Mini LED chips or Micro LED chips basically adopt a flip-chip structure. Due to the material and process of Mini LED chips or Micro LED chips, the light distribution curve of the short side oblique crack direction of the Mini LED chip or Micro LED chip will be asymmetric, and the Mini LED chip or Micro LED chip will emit uneven light. Since the current Mini LED chips or Micro LED chips are generally arranged on the driving substrate, the positive electrode of the chip is generally uniformly set on one side and the negative electrode of the chip is uniformly set on the other side, which will cause the short sides of the oblique crack of the chip to be uniformly placed in the same direction. Since the chip arrangement method is consistent, the light distribution curve of the chip is consistent with the light distribution curve of the display device. When viewing from the left and right sides of the display device, it is easy to feel color cast and uneven light emission, affecting the subjective viewing effect.

[0040] The light distribution curve refers to the light intensity distribution of a light source (or light beam, or light ray) in various directions or angles in space. In a rectangular coordinate system, the ordinate axis generally represents the luminous intensity, and the abscissa axis represents the angle of the light beam.

[0041] Based on the above problems, the present invention provides a display device that can solve the above problems. Figure 1 This is one of the structural schematic diagrams of the display device provided in the embodiment of the utility model.

[0042] like Figure 1 As shown, the display device includes: a driving substrate 100 and a light emitting chip 300 .

[0043] The driving substrate 100 is located at the bottom of the display device. Usually, the size of the driving substrate 100 is adapted to the overall size of the display device, and the size of the driving substrate 100 is slightly smaller than the size of the display device.

[0044] The shape of the driving substrate 100 is the same as the overall shape of the display device, and can be set to be a rectangle or a square. When the display device is a special-shaped display device, the shape of the driving substrate can be adaptively set to other shapes, which is not limited here.

[0045] The driving substrate 100 may also be a printed circuit board (PCB), for example, a high density interconnect (HDI) circuit board.

[0046] In some embodiments, the display device may also include multiple drive substrates 100, which are spliced ​​to provide drive signals for the display device. To avoid optical problems caused by splicing drive substrates 100, the seams between adjacent drive substrates 100 are minimized, or even seamless splicing is achieved.

[0047] There are multiple pad pairs 200 on the driving substrate 100; the multiple pad pairs 200 are arranged in an array along the first direction F1 and the second direction F2; the first direction F1 and the second direction F2 intersect; multiple light-emitting chips 300 are located on the driving substrate 100 and are electrically connected to the multiple pad pairs 200 on the driving substrate 100 one by one.

[0048] The driving substrate 100 is used to provide a driving signal to drive the light-emitting chip 300 to emit light;

[0049] Among them, the pad pair 200 includes a first pad 1 and a second pad 2, and the first pad 1 and the second pad 2 are arranged along a first direction F1; the light-emitting chip 300 includes a first electrode a and a second electrode b; the first pad 1 is used to electrically connect the first electrode a of the light-emitting chip 300, and the second pad 2 is used to electrically connect the second electrode b of the light-emitting chip 300.

[0050] The first power signal provided by the driving substrate 100 is transmitted to the first electrode a of the light emitting chip 300 through the first pad 1, and the second power signal provided by the driving substrate 100 is transmitted to the second electrode b of the light emitting chip 300 through the second pad 2, wherein the polarity of the first electrode a is opposite to that of the second electrode b. For example, the first electrode a is positive and the second electrode b is negative; or the first electrode a is negative and the second electrode b is positive.

[0051] The first pad 1 and the second pad 2 in the pad pair 200 may also be circular, elliptical or other shapes, which are not limited here. The first pad 1 and the second pad 2 in the pad pair 200 have a certain distance to avoid short circuit in the subsequent welding process.

[0052] The plurality of pad pairs 200 include: a plurality of first pad pairs 210 and at least one second pad pair 220; the arrangement order of the first pad a and the second pad b in the first pad pair 210 along the first direction F1 is opposite to the arrangement order of the first pad a and the second pad b in the second pad pair 220 along the first direction F1. In this way, the first electrodes a of the light-emitting chip 300 can be prevented from being uniformly arranged on one side and the second electrodes b can be uniformly arranged on the other side, thereby preventing the short sides of the oblique cracks of the light-emitting chip 300 from being in the same direction, that is, preventing the light distribution curves of the light-emitting chip 300 from being on the same side, which can improve the problem of too large a difference in viewing effect when viewed from both sides of the display device, thereby improving the color cast problem of the display device, avoiding the problem of uneven light emission, and improving the viewing effect.

[0053] For example, if the short side of the oblique crack of the light-emitting chip electrically connected to the first pad pair is close to the left side, then the light distribution curve of the light-emitting chip electrically connected to the first pad pair is closer to the left side; if the short side of the oblique crack of the light-emitting chip electrically connected to the second pad pair is close to the right side, then the light distribution curve of the light-emitting chip electrically connected to the second pad pair is closer to the right side; the light distribution curve of the light-emitting chip corresponding to the first pad pair is symmetrical with the light distribution curve of the light-emitting chip corresponding to the second pad pair, then the arrangement order of the first pad and the second pad in the first pad pair along the first direction is opposite to the arrangement order of the first pad and the second pad in the second pad pair along the first direction, which can further improve the light distribution curve of the display device and make the light distribution curve of the display device symmetrical on the left and right, so that when viewing from the left and right sides of the display device, it is difficult to feel the problems of color cast and uneven light emission, thereby improving the subjective viewing effect.

[0054] In some embodiments, Figure 2As shown, the number of first pad pairs 210 and the number of second pad pairs 220 included in the plurality of pad pairs 200 are equal. By making the number of first pad pairs and second pad pairs equal, the directions of the short sides of the oblique cracks of half of the light-emitting chips in the entire display device are close to the same side, while the directions of the short sides of the oblique cracks of the other half of the light-emitting chips are opposite, thereby more effectively improving the color cast and uneven light emission problems of the display device and improving the subjective viewing effect.

[0055] In some embodiments, Figure 2 As shown, a plurality of first pad pairs 210 are arranged along the second direction F2 into a plurality of first pad pairs 210 columns, and a plurality of second pad pairs 220 are arranged along the second direction F2 into a plurality of second pad pairs 220 columns; the first pad pairs 210 columns and the second pad pairs 220 columns are arranged alternately along the first direction. In this way, the first pad pairs and the second pad pairs can be evenly arranged in the first direction, and the light distribution curves of the two adjacent columns of light-emitting chips can be complementary. Then, the maximum value of the light distribution curve of the overall display device is located at the center, and the left and right sides of the light distribution curve are symmetrical, further improving the color cast and uneven light emission problems.

[0056] For example, the light distribution curve of the light emitting chip corresponding to the first pad pair is as follows: Figure 3 As shown, the light distribution curve of the light emitting chip corresponding to the second pad pair is as follows Figure 4 As shown. Wherein, the horizontal axis represents the angle of light, and the vertical axis represents the light intensity. Then, the light distribution curve formed by the light-emitting chip corresponding to the first pad pair and the light-emitting chip corresponding to the second pad pair is as follows: Figure 5 The light distribution curve of the display device is shown as Figure 6 shown.

[0057] from Figure 3 It can be seen that the maximum value of the light intensity of the light-emitting chip corresponding to the first pad pair roughly corresponds to the horizontal coordinate of -10 degrees, and the corresponding light intensity when the horizontal coordinate is -70 degrees is significantly higher than the corresponding light intensity when the horizontal coordinate is 70 degrees, that is, the light distribution curve of the light-emitting chip corresponding to the first pad pair is asymmetric on the left and right;

[0058] from Figure 4 It can be seen that the maximum value of the light intensity of the light-emitting chip corresponding to the second pad pair roughly corresponds to the horizontal coordinate of 10 degrees, and the corresponding light intensity when the horizontal coordinate is 70 degrees is significantly higher than the corresponding light intensity when the horizontal coordinate is -70 degrees, that is, the light distribution curve of the light-emitting chip corresponding to the second pad pair is asymmetric on the left and right;

[0059] from Figure 5It can be seen that the light distribution curve of the light-emitting chip corresponding to the first pad pair is symmetrical with the light distribution curve of the light-emitting chip corresponding to the second pad pair about the vertical axis, that is, the light distribution curve of the light-emitting chip corresponding to the first pad pair is complementary with the light distribution curve of the light-emitting chip corresponding to the second pad pair.

[0060] Then, by arranging the first pad pairs and the second pad pairs alternately along the first direction, the light distribution curve of the entire display device can be made symmetrical about the vertical axis. Figure 6 It can be seen that the light distribution curve of the display device is symmetrical about the ordinate axis, wherein the maximum value of the abscissa corresponding to the maximum light intensity is 0 degrees, and the light intensity corresponding to 70 degrees of the abscissa is roughly equal to the light intensity corresponding to -70 degrees of the abscissa. The color cast and uneven light emission problems of the display device are improved, and the subjective viewing effect is improved.

[0061] In some embodiments, Figure 7 As shown, a plurality of first pad pairs 210 are arranged along the first direction F1 into a plurality of first pad pairs 210 rows, and a plurality of second pad pairs 220 are arranged along the first direction F1 into a plurality of second pad pairs 220 rows; the first pad pairs 210 rows and the second pad pairs 220 rows are alternately arranged along the second direction F2. In this way, the problem of color cast and uneven light emission can be avoided when viewing from the upper and lower sides of the display device, thereby improving the subjective viewing effect.

[0062] In some embodiments, Figure 8 As shown, the first pad pair 210 and the second pad pair 220 are alternately arranged along the first direction F1; the first pad pair 210 and the second pad pair 220 are alternately arranged along the second direction F2. Then, no matter the display device is viewed from the top or bottom or from the left or right, it is difficult to feel the problem of color cast and uneven light emission, and the display effect is greatly improved.

[0063] In some embodiments, Fig. 9 As shown, at least two adjacent pad pairs 200 arranged along the second direction F2 are divided into a pad group, and the number of pad pairs contained in each pad group is the same; the pad group is divided into a first pad group 211 and a second pad group 222; the pad pairs in the first pad group 211 are all first pad pairs 210, and the pad pairs in the second pad group 222 are all second pad pairs 220.

[0064] For example, each pad group includes: 2 pad pairs, 3 pad pairs, 4 pad pairs, etc., which are not limited here. When a pixel contains 3 sub-pixels, that is, corresponding to 3 light-emitting chips, the 3 light-emitting chips correspond to 3 pad pairs; or when a pixel contains 4 sub-pixels, that is, corresponding to 4 light-emitting chips, the 4 light-emitting chips correspond to 4 pad pairs; such a setting is convenient for arranging pixels, that is, pixels can be arranged quickly and conveniently;

[0065] In some embodiments, Fig.10 As shown, the first pad group 211 and the second pad group 222 are alternately arranged along the first direction F1. This arrangement is to achieve symmetry of the overall light distribution curve based on pixels, avoid color cast and uneven light emission when viewing from the left and right sides of the display device, and thus improve the subjective viewing effect.

[0066] In some embodiments, Fig.11 As shown, the first pad group 211 and the second pad group 222 are alternately arranged in sequence along the second direction F2. This arrangement is to achieve symmetry of the overall light distribution curve based on pixels, avoid the problem of color cast and uneven light emission when viewing from the upper and lower sides of the display device, thereby improving the subjective viewing effect.

[0067] In some embodiments, Fig.12 As shown, the first pad group 211 and the second pad group 222 are alternately arranged along the first direction F1; the first pad group 211 and the second pad group 222 are alternately arranged in sequence along the second direction F2. This arrangement is to achieve symmetry of the overall light distribution curve based on the pixel unit, avoid the problem of color cast and uneven light emission when viewing from the upper and lower sides of the display device or from the left and right sides of the display device, thereby improving the subjective viewing effect.

[0068] In some embodiments, Fig.13 As shown, three pad pairs arranged along the second direction F2 constitute a pad group 233, 244, and the wavelengths of the emitted light of the three light-emitting chips 300 electrically connected to the pad groups 233, 244 are different; one or two pad pairs in the pad group are second pad pairs, and the remaining two pad pairs in the pad group are first pad pairs. For example, the pad group 233 has two first pad pairs 210 and one second pad pair 220; then, the pad group 244 has two second pad pairs 220 and one first pad pair 210; the pad group 233 and the pad group 244 are alternately arranged along the first direction F1.

[0069] Specifically, the three light-emitting chips electrically connected to the pad group are respectively the first light-emitting chip, the second light-emitting chip and the third light-emitting chip; wherein the first light-emitting chip is used to emit red light, the second light-emitting chip is used to emit green light, and the third light-emitting chip is used to emit blue light.

[0070] Due to the process differences of some light-emitting chip manufacturers, the oblique crack directions of the short sides of the first light-emitting chip, the second light-emitting chip and the third light-emitting chip electrically connected to the pad group may not be uniformly on the same side. For example, the oblique crack directions of the short sides of the first light-emitting chip and the third light-emitting chip are on the same side, while the oblique crack directions of the short sides of the second light-emitting chip are on the other side opposite thereto. By setting the pad group 233 to have two first pad pairs 210 and one second pad pair 220; the pad group 244 to have two second pad pairs 220 and one first pad pair 210; the pad group 233 and the pad group 244 are alternately arranged along the first direction F1, so that the light distribution curve of the first column of pixels and the light distribution curve of the second column of pixels can be complemented, thereby improving the problems of color cast and uneven light emission and improving the subjective viewing effect.

[0071] In some embodiments, the light-emitting chip is an LED chip, a Mini LED chip or a Micro LED chip.

[0072] In some embodiments, Fig.13 As shown, the light emitting surface of the light emitting chip 300 is rectangular, the long side of the light emitting surface of the light emitting chip is parallel to the first direction F1, and the short side of the light emitting surface of the light emitting chip is parallel to the second direction F2.

[0073] In the specific implementation, in the embodiment of the utility model, the display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. Other essential components of the display device should be understood by ordinary technicians in the field, and will not be described here, nor should they be used as limitations of the utility model.

[0074] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0075] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display device, characterized in that: include: A driving substrate having a plurality of pad pairs on the driving substrate; the plurality of pad pairs are arranged in an array along a first direction and a second direction; the first direction intersects the second direction; and A plurality of light-emitting chips are located on the driving substrate and are electrically connected to the plurality of pad pairs on the driving substrate in a one-to-one correspondence; The pad pair includes a first pad and a second pad, and the first pad and the second pad are arranged along the first direction; the light-emitting chip includes a first electrode and a second electrode; the first pad is used to electrically connect the first electrode of the light-emitting chip, and the second pad is used to electrically connect the second electrode of the light-emitting chip; The plurality of pad pairs include: a plurality of first pad pairs and at least one second pad pair; the arrangement order of the first pads and the second pads in the first pad pairs along the first direction is opposite to the arrangement order of the first pads and the second pads in the second pad pairs along the first direction.

2. The display device according to claim 1, wherein: The number of the first pad pairs included in the plurality of pad pairs is equal to the number of the second pad pairs.

3. The display device according to claim 2, wherein: A plurality of the first pad pairs are arranged into a plurality of first pad pair columns along the second direction, and a plurality of the second pad pairs are arranged into a plurality of second pad pair columns along the second direction; the first pad pair columns and the second pad pair columns are alternately arranged along the first direction.

4. The display device according to claim 2, wherein: The first pad pairs are arranged into a plurality of first pad pair rows along the first direction, and the second pad pairs are arranged into a plurality of second pad pair rows along the first direction; the first pad pair rows and the second pad pair rows are alternately arranged along the second direction.

5. The display device according to claim 2, wherein: The first pad pairs and the second pad pairs are alternately arranged along the first direction; the first pad pairs and the second pad pairs are alternately arranged along the second direction.

6. The display device according to claim 2, wherein: Dividing at least two adjacent pad pairs arranged along the second direction into a pad group, wherein the number of pad pairs included in each pad group is the same; The pad group is divided into a first pad group and a second pad group; the pad pairs in the first pad group are all the first pad pairs, and the pad pairs in the second pad group are all the second pad pairs; The first pad groups and the second pad groups are alternately arranged along the first direction; and / Alternatively, the first pad group and the second pad group are alternately arranged in sequence along the second direction.

7. The display device according to claim 1, wherein: The three pad pairs arranged along the second direction constitute a pad group, and the wavelengths of the emitted lights of the three light-emitting chips electrically connected to the pad group are different; One or two pad pairs in the pad group are the second pad pairs, and the remaining two pad pairs in the pad group are the first pad pairs.

8. The display device according to claim 7, characterized in that The three light-emitting chips electrically connected to the pad group are respectively a first light-emitting chip, a second light-emitting chip and a third light-emitting chip; The first light emitting chip is used to emit red light, the second light emitting chip is used to emit green light, and the third light emitting chip is used to emit blue light.

9. The display device according to claim 8, wherein: The light-emitting chip is an LED chip, a Mini LED chip or a Micro LED chip.

10. The display device according to claim 9, characterized in that The light emitting surface of the light emitting chip is rectangular, the long side of the light emitting surface of the light emitting chip is parallel to the first direction, and the short side of the light emitting surface of the light emitting chip is parallel to the second direction.

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