A display device

Abstract

The application relates to a display device. The display device comprises a display panel, a diffusion plate, and a backlight module. The backlight module comprises a plurality of sub-zones, each of which is independently driven, and at least one of the sub-zones comprises a plurality of light-emitting units. The light-emitting unit comprises a packaging support, and the packaging support is provided with first, second and third light-emitting chips with different light-emitting colors. In at least one of the sub-zones, the chip arrangement directions of two light-emitting units adjacent to each other in at least one target direction are different. The chip arrangement direction is the pointing direction of the chip arrangement in the light-emitting unit along the first, second and third light-emitting chips. The chip size of the first, second and third light-emitting chips is between 50 microns and 300 microns. The value of H / P corresponding to the backlight module is between 1:1.1 and 1:1.8. The value of L1 / L2 corresponding to the backlight module is between 0.05 and 0.2. The display device can solve the display shadow problem.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device. Background Technology

[0002] With the development of display technology, RGB three-color backlight technology has emerged, which can be used to realize the function of the backlight module in display devices.

[0003] In traditional technology, RGB three-color chips are usually encapsulated in the light-emitting unit. However, the light-emitting chip, which is located at the edge of the light-emitting unit, is close to the bracket. The light emitted by the chip is easily blocked by the bracket, which will result in a display shadow on the side of the light panel closer to the bracket. Summary of the Invention

[0004] Therefore, it is necessary to provide a display device that can reduce display shadows in order to address the aforementioned technical problems.

[0005] This application provides a display device, the display device comprising:

[0006] Display panel;

[0007] Diffuser plate;

[0008] Backlight module, the backlight module comprising:

[0009] Multiple partitions, which are driven by parallel circuits, can make the brightness of the light-emitting units in different partitions different at the same time;

[0010] At least one partition includes multiple light-emitting units; wherein, the light-emitting unit includes a packaging bracket, and a first light-emitting chip, a second light-emitting chip and a third light-emitting chip are disposed in the packaging bracket, and the first light-emitting chip, the second light-emitting chip and the third light-emitting chip emit different colors;

[0011] Wherein, at least one of the first light-emitting chip, the second light-emitting chip, and the third light-emitting chip has a length greater than 50 micrometers and less than 300 micrometers;

[0012] Furthermore, the height of the encapsulation bracket is L1, and the distance between the edges of two adjacent light-emitting units is L2, wherein L1 / L2 is greater than 0.05 and less than 0.2;

[0013] The height distance from the light-emitting surface of the light-emitting chip of the light-emitting unit to the diffuser plate is H, and the distance between the center points of two adjacent light-emitting units is P, wherein the ratio of H to P is between 1:1.1 and 1:1.8.

[0014] In this case, the chip arrangement directions of two adjacent light-emitting units in at least one partition and at least one target direction are different. The chip arrangement direction is the direction in which the chips in the light-emitting units are arranged along the first light-emitting chip, the second light-emitting chip and the third light-emitting chip. The target direction includes a first direction and a second direction.

[0015] The aforementioned display device includes a display panel, a diffuser plate, and a backlight module. The backlight module comprises multiple zones, which are driven by parallel circuits, allowing for different brightness levels of the light-emitting units in different zones at the same time. Each light-emitting unit includes a packaging bracket, in which a first light-emitting chip, a second light-emitting chip, and a third light-emitting chip are disposed. Since the first, second, and third light-emitting chips emit different colors, and at least one of the first, second, and third light-emitting chips has a length greater than 50 micrometers and less than 300 micrometers, the aforementioned display device is a display based on a Mini backlight solution. In this application's Mini backlight solution, to reduce the number of light-emitting units, the distance P between the center points of two adjacent light-emitting units is designed to be larger. Furthermore, to reduce the overall thickness of the display device, the height H from the light-emitting surface of the light-emitting chip to the diffuser plate is designed to be smaller. Therefore, in the Mini backlight solution, the ratio of H to P is 1:1.1 to 1:1.8. When the H / P ratio in the Mini backlight solution is 1:1.1 to 1:1.8, the ratio of the height L1 of the packaging bracket to the distance L2 between the edges of two adjacent light-emitting units will be greater than 0.05 and smaller than 0.05. At a ratio of 0.2, the packaging bracket does not excessively obstruct the light emission of the light-emitting chip while still meeting the overall thickness design requirements of the display device. However, when the H / P ratio is between 1:1.1 and 1:1.8, and the L1 / L2 ratio is between 0.05 and 0.2, the packaging bracket will still obstruct the light emission of the light-emitting chip to some extent, inevitably causing shadow problems and resulting in display shadows on the display device. Based on this, this application designs the chip arrangement direction of two adjacent light-emitting units in at least one target direction to be different in at least one partition, wherein the chip arrangement direction is along the first light-emitting chip in the light-emitting unit. The first, second, and third light-emitting chips are arranged in a specific direction, with the target direction including the first and second directions. In this Mini backlight solution, the regular arrangement of the light-emitting angles of each light-emitting unit is disrupted by changing the chip arrangement direction of the light-emitting units. This results in at least one adjacent light-emitting unit with a different light-emitting angle in at least one target direction. Consequently, there are adjacent light-emitting units in at least one target direction whose light rays can complement each other. That is, two adjacent light-emitting units can provide some supplementary lighting to the area where the other support is blocked, thus reducing lamp shadows and solving the problem of dark shadows on the display device.

[0016] In one embodiment, in the at least one partition, in the first direction, the included angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in the same partition is within a preset angle range.

[0017] In the at least one partition, in the second direction, the chip arrangement direction of all light-emitting units in the kth column of the same partition is the same, the chip arrangement direction of all light-emitting units in the (k+2)th column is the same, and the chip arrangement direction of the kth column is different from that of the (k+2)th column, and the chip arrangement direction of any two adjacent light-emitting units in the (k+1)th column is opposite, where k is a positive integer.

[0018] In this embodiment, in at least one partition, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in the same partition is set within a preset angle range in the first direction. This results in different chip arrangement directions for two adjacent light-emitting units in the same partition in the first direction, leading to different emission angles between adjacent light-emitting units in the first direction. In at least one partition, in the second direction, all light-emitting units in the k-th column of the same partition have the same chip arrangement direction, all light-emitting units in the (k+2)-th column have the same chip arrangement direction, and the chip arrangement directions of the k-th column and the (k+2)-th column are different. Any two adjacent light-emitting units in the (k+1)-th column have opposite chip arrangement directions. This ensures that the chip arrangement directions of the k-th column and the (k+1)-th column are different. There will be adjacent light-emitting units with different emission angles between the k+1 column light-emitting units, and there will also be adjacent light-emitting units with different emission angles between the k+2 column light-emitting units and the k+1 column light-emitting units. This ensures that there are adjacent light-emitting units with different emission angles between the k+1 column light-emitting units and the k+2 column light-emitting units in the second direction. Based on this, in this embodiment, there are adjacent light-emitting units with different emission angles in the same partition, whether in the first direction or the second direction. This ensures that there are adjacent light-emitting units with different emission angles globally. The light emitted by adjacent light-emitting units with different emission angles can complement each other, thus eliminating the light shadow caused by the bracket globally, resulting in a better light shadow elimination effect.

[0019] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition is from the ground side to the sky side;

[0020] In the at least one partition, in the second direction, the (k+1)th column of light-emitting units in the same partition includes a first type of light-emitting unit with the chip arrangement direction from left to right, and a second type of light-emitting unit with the chip arrangement direction from right to left, and the first type of light-emitting unit and the second type of light-emitting unit are alternately arranged in the (k+1)th column of light-emitting units.

[0021] In the at least one partition, in the second direction, the chip arrangement direction of the (k+2)th column of light-emitting units in the same partition is from the top side to the bottom side, where k is a positive integer.

[0022] In the above embodiments, in at least one partition, in the second direction, the chip arrangement direction of the k-th column of light-emitting units in the same partition is from the ground side to the sky side. The (k+1)-th column of light-emitting units includes a first type of light-emitting unit with a chip arrangement direction from left to right and a second type of light-emitting unit with a chip arrangement direction from right to left. The first and second types of light-emitting units are alternately arranged in the (k+1)-th column of light-emitting units. The chip arrangement direction of the (k+2)-th column of light-emitting units is from the sky side to the ground side. Thus, in the same partition, the chip arrangement directions between the k-th and (k+1)-th light-emitting units are perpendicular to each other, and the chip arrangement directions between the (k+2)-th and (k+1)-th light-emitting units are also perpendicular to each other. This ensures that there is a significant difference in the emission angles between the k-th and (k+1)-th light-emitting units, and a significant difference in the emission angles between the (k+2)-th and (k+1)-th light-emitting units. Therefore, the emitted light rays between the k-th and (k+1)-th light-emitting units can be complementary, and the emitted light rays between the (k+2)-th and (k+1)-th light-emitting units can also complement each other. The light emission relationships can also be complementary, which helps to eliminate lamp shadows. In addition, in the (k+1)th column, the first type of light-emitting unit and the second type of light-emitting unit are alternately set, so that the number of different light-emitting chips near the kth column light-emitting unit and the number of different light-emitting chips near the k+2 column light-emitting unit are nearly the same. In this way, the light emitted by the (k+1)th column light-emitting unit has a nearly consistent supplementary lighting effect on the kth and k+2th column light-emitting units, and the supplementary lighting amount is more uniform. Therefore, the supplementary lighting effect is better and can solve the problem of display shadows between light-emitting units.

[0023] In addition, for each partition, not all the first and third light-emitting chips in the row or column of light-emitting units near the edge of the partition will be in the position closest to the bracket. Therefore, in the row or column of light-emitting units near the edge of the partition, at least some of the first and third light-emitting chips will not be in the position closest to the bracket. In this way, the light emitted by these first and third light-emitting chips can illuminate the edge area of ​​the partition. Even if there are no other chips to supplement the light at the edge of the partition, the shadow at the edge of the partition can be eliminated. Therefore, the shadow at the edge of the whole machine or the edge of the light board can be eliminated, and the display shadow problem at the edge of the whole machine or the edge of the light board can be solved.

[0024] Based on this, the above embodiments can simultaneously eliminate shadows between light-emitting units and eliminate light shadows at the edges of the entire machine or the edges of the light panel, thus achieving a better light shadow elimination effect.

[0025] In one embodiment, in at least one partition, in a first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in the same partition is within a preset angle range; in at least one partition, in a second direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are the same.

[0026] In this embodiment, in at least one partition, the angle between the extended lines of the chip arrangement direction of two adjacent light-emitting units in the same partition in the first direction is within a preset angle range. Therefore, it can be ensured that the light emission angles of two adjacent light-emitting units in the first direction are different. In this way, the light emitted by two adjacent light-emitting units in the same partition can complement each other, thereby eliminating the shadow between two adjacent light-emitting units and solving the shadow problem between adjacent light-emitting units.

[0027] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+2)th column light-emitting unit in the same partition is from left to right, and the chip arrangement direction of the (k+1)th column light-emitting unit in the same partition is from the ground side to the sky side, where k is a positive integer.

[0028] In this embodiment, in at least one partition, the chip arrangement direction of the k-th column and the (k+2)-th column of light-emitting units in the same partition is arranged from left to right in the second direction, and the chip arrangement direction of the (k+1)-th column of light-emitting units is arranged from the ground side to the sky side. In this way, in the second direction, the chip arrangement directions of the k-th column and the (k+1)-th column of light-emitting units in the same partition are perpendicular to each other, and the chip arrangement directions of the (k+1)-th column and the (k+2)-th column of light-emitting units are perpendicular to each other. As a result, the light emission angles of the k-th column and the (k+1)-th column of light-emitting units in the same partition are different, and the light emission angles of the (k+1)-th column and the (k+2)-th column of light-emitting units in the same partition are also different. Thus, the light emitted from the k-th column and the (k+1)-th column of light-emitting units in the same partition can be complementary, and the light emitted from the (k+1)-th column and the (k+2)-th column of light-emitting units in the same partition can be complementary, thereby eliminating the shadow between two adjacent light-emitting units and solving the shadow problem between adjacent light-emitting units.

[0029] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+2)th column light-emitting unit in the same partition is from left to right, and the chip arrangement direction of the (k+1)th column light-emitting unit in the same partition is from the top side to the bottom side, where k is a positive integer.

[0030] In this embodiment, in at least one partition, the chip arrangement direction of the k-th column and the (k+2)-th column of light-emitting units in the same partition is arranged from left to right in the second direction, and the chip arrangement direction of the (k+1)-th column of light-emitting units is arranged from the top to the bottom. Thus, in the second direction, the chip arrangement directions of the k-th column and the (k+1)-th column of light-emitting units in the same partition are perpendicular to each other, and the chip arrangement directions of the (k+1)-th column and the (k+2)-th column of light-emitting units are also perpendicular to each other. Therefore, the light emission angles of the k-th column and the (k+1)-th column of light-emitting units in the same partition are different, and the light emission angles of the (k+1)-th column and the (k+2)-th column of light-emitting units are also different. This allows the emitted light rays from the k-th column and the (k+1)-th column of light-emitting units in the same partition to be complementary, thereby eliminating the shadow between adjacent light-emitting units and solving the shadow problem between adjacent light-emitting units.

[0031] In one embodiment, in the at least one partition, in the first direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are opposite; in the at least one partition, in the second direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are the same.

[0032] In this embodiment, in at least one partition, the chip arrangement directions of two adjacent light-emitting units in the same partition are opposite in the first direction. In this way, the light emission angles of two adjacent light-emitting units in the same partition will be different, and the light emitted by the two adjacent light-emitting units can complement each other, thereby eliminating the shadow between adjacent light-emitting units and solving the shadow problem between adjacent light-emitting units.

[0033] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition is from the ground side to the sky side, and the chip arrangement direction of the (k+1)th column of light-emitting units is from the sky side to the ground side, where k is a positive integer.

[0034] In this embodiment, in at least one partition, the chip arrangement direction of the kth column of light-emitting units in the same partition is from the ground side to the sky side in the second direction, and the chip arrangement direction of the (k+1)th column of light-emitting units is from the sky side to the ground side. In this way, in the second direction, the chip arrangement directions of the kth column of light-emitting units and the (k+1)th column of light-emitting units in the same partition are opposite, and the emission angles of the kth column of light-emitting units and the (k+1)th column of light-emitting units will be completely different. Therefore, the emitted light rays of the kth column of light-emitting units and the (k+1)th column of light-emitting units in the same partition can complement each other, which can eliminate the lamp shadow between the kth column of light-emitting units and the (k+1)th column of light-emitting units in the same partition and solve the lamp shadow problem between adjacent light-emitting units.

[0035] In one embodiment, in the at least one partition, the angle between the extended lines of the chip arrangement direction of any two adjacent light-emitting units in the same partition is within a preset angle range.

[0036] In this embodiment, in at least one partition, the angle between the extended lines of the chip arrangement directions of any two adjacent light-emitting units in the same partition is set within a preset angle range. In this way, there are adjacent light-emitting units with different light emission angles in both the first and second directions. Whether in the first or second direction, the light emitted by adjacent light-emitting units can complement each other. Therefore, the light emission can be complemented globally, resulting in better supplementary lighting effect and eliminating the shadow between adjacent light-emitting units globally.

[0037] In one embodiment, in the at least one partition, the chip arrangement direction of the light-emitting units in the same partition is from left to right, or from the top side to the bottom side;

[0038] Alternatively, in at least one partition, the chip arrangement direction of the light-emitting units in the same partition is from left to right, or from the ground side to the sky side.

[0039] In this embodiment, based on the fact that the angle between the extended lines of the chip arrangement directions of any two adjacent light-emitting units is within a preset angle range, in at least one partition, the chip arrangement direction of the light-emitting units in the same partition is set to left-to-right and from the sky to the ground, or the chip arrangement direction of the light-emitting units in the same partition is set to left-to-right and from the ground to the sky. This makes the chip arrangement directions of adjacent light-emitting units in the same partition perpendicular to each other. Therefore, the emission angles between adjacent light-emitting units are different globally, and the emitted light rays can complement each other, resulting in a better supplementary lighting effect and eliminating the shadows between adjacent light-emitting units globally.

[0040] In one embodiment, in the at least one partition, in the first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in a portion of the same partition is within a preset angle range, while the chip arrangement directions of two adjacent light-emitting units in the remaining portion are opposite.

[0041] In this embodiment, in at least one partition, the chip arrangement direction of a portion of adjacent light-emitting units in the same partition is set such that the angle between the extension lines is within a preset angle range in the first direction, and the chip arrangement direction of the remaining adjacent light-emitting units in the same partition is set to the opposite. In this way, whether the chip arrangement direction of adjacent light-emitting units in the first direction is opposite or the angle between the extension lines is within the preset angle range, it can be ensured that the light emission angles of adjacent light-emitting units in the same partition in the first direction are different. Therefore, the light emitted by adjacent light-emitting units can complement each other, thereby eliminating the lamp shadow between adjacent light-emitting units.

[0042] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+3)th column light-emitting unit in the same partition is from the top side to the bottom side;

[0043] In the at least one partition, in the second direction, the chip arrangement direction of the (k+1)th column light-emitting unit and the (k+4)th column light-emitting unit in the same partition is from the ground side to the sky side;

[0044] In the at least one partition, in the second direction, the arrangement direction of the light-emitting unit chips in the (k+2)th column of the same partition is from left to right, where k is a positive integer.

[0045] In this embodiment, in at least one partition, by setting the chip arrangement direction of each column of light-emitting units in the second direction, the chip arrangement directions of adjacent columns of light-emitting units are opposite or perpendicular to each other. In this way, the difference between the light emission angles of adjacent columns of light-emitting units is large enough, so the light emitted by adjacent columns of light-emitting units can complement each other, thereby eliminating the lamp shadow between adjacent light-emitting units.

[0046] In one embodiment, in the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+4th column light-emitting unit) of the same partition is from the top side to the bottom side;

[0047] In the at least one partition, in the second direction, the chip arrangement direction of the (k+1)th column light-emitting unit and the (k+5)th column light-emitting unit in the same partition is from left to right.

[0048] In the at least one partition, in the second direction, the chip arrangement direction of the (k+2)th column light-emitting unit and the (k+6)th column light-emitting unit in the same partition is from the ground side to the sky side;

[0049] In the at least one partition, in the second direction, the chip arrangement direction of the (k+3)th column of light-emitting units in the same partition is from right to left, where k is a positive integer.

[0050] In this embodiment, in at least one partition, by setting the chip arrangement direction of each column of light-emitting units in the second direction, the chip arrangement directions of adjacent columns of light-emitting units are opposite or perpendicular to each other. In this way, the difference between the light emission angles of adjacent columns of light-emitting units is large enough, so the light emitted by adjacent columns of light-emitting units can complement each other, thereby eliminating the lamp shadow between adjacent light-emitting units.

[0051] In one embodiment, the preset angle range is 80 degrees to 100 degrees. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of the lamp board in some embodiments of the Mini backlight solution provided in this application;

[0054] Figure 2 This is a schematic diagram of the structure of the lamp board in the Mini backlight solution provided in some other embodiments of this application;

[0055] Figure 3 Hardware configuration block diagrams of display devices provided in some embodiments of this application;

[0056] Figure 4 Hardware configuration block diagrams of the lamp board provided in some embodiments of this application;

[0057] Figure 5These are light-emitting effect diagrams of individual RGB three-color chips emitting light, provided in some embodiments of this application.

[0058] Figure 6 This is a schematic diagram of a first arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0059] Figure 7 This is a schematic diagram of a second arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0060] Figure 8 This is a schematic diagram illustrating the change in the chip arrangement direction of the light-emitting unit in some embodiments of this application;

[0061] Figure 9 This is a schematic diagram showing the emission angle of two adjacent light-emitting units after changing the chip arrangement direction of the light-emitting units in some embodiments of this application;

[0062] Figure 10 This is a schematic diagram of a third arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0063] Figure 11 This is a schematic diagram illustrating the change in the chip arrangement direction of the light-emitting unit in other embodiments of this application;

[0064] Figure 12 This is a schematic diagram showing the light emission angle of two adjacent light-emitting units after changing the chip arrangement direction of the light-emitting units in other embodiments of this application;

[0065] Figure 13 This is a schematic diagram illustrating the changing chip arrangement direction of the light-emitting unit in some embodiments of this application;

[0066] Figure 14 This is a schematic diagram of the light emission angle between two adjacent light emission units after changing the chip arrangement direction of the light emission units in some embodiments of this application;

[0067] Figure 15 This is a schematic diagram of a fourth arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0068] Figure 16 This is a schematic diagram of a fifth arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0069] Figure 17 This is a schematic diagram of a sixth arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0070] Figure 18 This is a schematic diagram of a seventh arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0071] Figure 19 This is a schematic diagram of an eighth arrangement of light-emitting units in a partial section of the lamp board in some embodiments of this application;

[0072] Figure 20 The top view and front view show the relative positions of the left edge of the lamp panel and the light-emitting unit in some embodiments of this application;

[0073] Figure 21 Top and front views showing the relative positions of the left edge of the lamp panel and the light-emitting unit in other embodiments of this application;

[0074] Figure 22 The above and front views show the relative positions of the left edge of the lamp panel and the light-emitting unit in some embodiments of this application. Detailed Implementation

[0075] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

[0076] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0077] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0078] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0079] The term "module" refers to any known or subsequently developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functions associated with that element.

[0080] Currently, RGB tri-color chips are typically packaged in light-emitting units (LED beads). RGB tri-color chips can be used in Mini backlight solutions for display devices. In Mini backlight solutions, the length of RGB tri-color chips is usually greater than 50 micrometers and less than 300 micrometers. The packaged RGB tri-color chips need to be supported by brackets. As a result, the distance between the light-emitting chips at the edge of the light-emitting unit and the brackets will be relatively close. The brackets will significantly block the light emitted by the light-emitting chips at the edge, thus producing light shadows.

[0081] Reference Figure 1 , Figure 1 This diagram shows the structure of the lamp panel in the Mini backlight solution. Figure 1 It is known that the distance between the center points of the light-emitting units is P, and the height from the light-emitting surface of the light-emitting chip of the light-emitting unit to the diffuser plate is H. Although the values ​​of H and P can be designed to be small enough to avoid the above-mentioned shadow problem, in the Mini backlight solution, on the one hand, in order to reduce the overall thickness of the display device, the height distance H is minimized as much as possible, which makes the design value of H small. On the other hand, in order to reduce the overall cost of the display device, the number of light-emitting units in the backlight module is usually minimized to achieve the required display effect, which leads to P needing to be designed to be large. Therefore, in the Mini backlight solution, the ratio of H to P is 1:1.1 to 1:1.8. Based on this, it is not difficult to see that the current technical approach to solving the shadow problem is to design the values ​​of H and P to be small enough, while the technological development trend of the Mini backlight solution is to design the value of H to be small enough, while P is involved to be large enough. Therefore, in the Mini backlight solution, the current technical approach to solving the shadow problem is contrary to the current technological development trend, so the shadow problem is difficult to solve in the Mini backlight solution.

[0082] Further integration Figure 2 The reasons for the appearance of the lamp shadow in this embodiment are explained in detail, based on Figure 2 It is known that currently, light-emitting units are all packaged with light-emitting chips in RGB order. Therefore, for the light-emitting unit as a whole, the emission angle of adjacent light-emitting units is the same. Based on this, further reference... Figure 2It is known that the support height of the light-emitting unit is L1, and the spacing between the edges of adjacent light-emitting units is L2. The light emitted by the light-emitting chip will be partially blocked by the support. The higher the support height L1, the more the light emitted by the light-emitting chip will be blocked by the support. In addition, the larger the spacing L2 between the edges of adjacent light-emitting units, the less the light emitted by the light-emitting chips of the same color in adjacent light-emitting units will overlap before reaching the diffuser plate, resulting in a worse light complementarity effect, or even no complementary effect. At the same time, in order to save the overall cost of the display device, the value of L2 cannot be designed too small. Therefore, in the backlight Mini solution of this embodiment, considering the overall cost of the display device and the lamp shadow problem, the design value of L1 / L2 will be greater than 0.05 and less than 0.2. However, under this design value, lamp shadows will still inevitably appear in the area between adjacent light-emitting units (between the supports) and the edge of the lamp plate, resulting in the display device showing a dark shadow problem.

[0083] To address the aforementioned display shadow problem, this application provides a display device 200, which generally refers to a device with screen display and data processing capabilities. For example, the display device 200 includes, but is not limited to, smart TVs, mobile terminals, computers, monitors, advertising screens, wearable devices, virtual reality devices, and augmented reality devices.

[0084] In some embodiments, refer to Figure 3 The display device 200 includes a back plate 400, a display panel 500, and a diffuser plate 600. The back plate 400 includes multiple lamp panels 300. The back plate 400 can be obtained by splicing multiple lamp panels 300. The back plate 400 can be used as one of the components of a backlight module.

[0085] In some embodiments, refer to Figure 4 The light board 300 may include multiple light-emitting units 800. Each light-emitting unit 800 may be a light-emitting unit that encapsulates a three-color chip. In this embodiment, the specific light-emitting colors of the first light-emitting chip, the second light-emitting chip, and the third light-emitting chip in the light-emitting unit 800 are not limited.

[0086] As an example, the light-emitting unit 800 may include a first light-emitting chip R (emitting red light), a second light-emitting chip G (emitting green light), and a third light-emitting chip B (emitting blue light).

[0087] As another example, the light-emitting unit 800 may include a first light-emitting chip B (emitting blue light), a second light-emitting chip G (emitting green light), and a third light-emitting chip R (emitting red light).

[0088] In this embodiment, the order in which the first light-emitting chip, the second light-emitting chip, and the third light-emitting chip are arranged in the light-emitting unit 800 is not limited, nor is the color of the light emitted by the first light-emitting chip, the second light-emitting chip, and the third light-emitting chip limited. In addition to emitting red light, green light, and red light, the light-emitting chips in this embodiment can also emit white light or yellow light, etc.

[0089] To facilitate a detailed explanation of this application, the following description uses red light-emitting chip R as the first light-emitting chip, green light-emitting chip G as the second light-emitting chip, and blue light-emitting chip B as the third light-emitting chip.

[0090] Depend on Figure 4 It can be seen that if the arrangement direction of the first light-emitting chip R, the second light-emitting chip G, and the third light-emitting chip B is taken as the chip arrangement direction of the light-emitting unit 800, then the chip arrangement direction of all light-emitting units 800 is the same. This will result in all light-emitting units 800 in the lamp board 300 having the same light emission angle and being regularly distributed. However, a bracket is usually set to fix and support the light-emitting units 800. Therefore, some of the light emitted by the light-emitting units 800 will always be blocked. Since the light emission angle of each light-emitting unit 800 is the same and regularly distributed, the complementary effect of the red or blue light emitted by adjacent light-emitting units 800 is poor. This will result in a shadow in the area of ​​the lamp board 300 near the bracket, thus causing the display device to have a display shadow.

[0091] Further reference Figure 5 ,exist Figure 5 In the middle, from left to right, are the first light-emitting effect diagram of the first light-emitting chip R emitting red light alone, the second light-emitting chip G emitting red light alone, and the third light-emitting chip B emitting blue light alone. Since the chip arrangement order of each light-emitting unit 800 is the same, the light emission angle of each light-emitting unit 800 is basically the same and they are arranged in a regular manner. However, the first light-emitting chip R and the third light-emitting chip B, which are closer to the bracket, will cause shadows (light shadows) in the area between the light-emitting units 800 (the area between the brackets) for the first light-emitting chip R emitting red light alone and the third light-emitting chip B emitting blue light alone.

[0092] Additionally, regarding the first luminous effect image, it can be seen that there is almost no red light in the left edge area. (Continue referring to...) Figure 4 It can be seen that this is because the first light-emitting chip R on the left is closer to the bracket, and most of the red light emitted by the first light-emitting chip R is blocked by the bracket. Furthermore, there are no other first light-emitting chips R on the left edge to supplement the red light. Therefore, there will also be a relatively obvious shadow (light shadow) on the left edge of the light panel 300.

[0093] Regarding the third emission effect image, it can be seen that there is almost no blue light in the right edge area. Continuing to refer to... Figure 4 It can be seen that this is because the third light-emitting chip B on the left is closer to the bracket, and most of the blue light emitted by the third light-emitting chip B is blocked by the bracket. Furthermore, there are no other third light-emitting chips B on the right edge to supplement the blue light. Therefore, there will also be a relatively obvious shadow (light shadow) on the right edge of the light panel 300.

[0094] It should also be noted that the shadows are caused by insufficient light output brightness. Therefore, in the white light effect diagram (RGB three-color light combined), because the red and blue light have shadows, that is, the light output brightness of the red and blue light is insufficient, there will be shadows in the area between the light-emitting units 800 in the light board 300 in the white light effect diagram, and there will also be relatively obvious shadows at the edges of the light board 300.

[0095] In some embodiments, the backlight module includes multiple partitions 700, wherein the multiple partitions 700 are driven by parallel circuits, which can make the brightness of the light-emitting units in different partitions 700 different at the same time. At least one partition 700 includes multiple light-emitting units 800. The light-emitting unit 800 includes a packaging bracket, in which a first light-emitting chip R, a second light-emitting chip G, and a third light-emitting chip B are disposed. The first light-emitting chip R emits red light, the second light-emitting chip G emits green light, and the third light-emitting chip B emits blue light.

[0096] In at least one partition 700, the chip arrangement directions of two adjacent light-emitting units 800 in at least one target direction are different. The chip arrangement direction is the direction in which the light-emitting units 800 are arranged along the first light-emitting chip R, the second light-emitting chip G and the third light-emitting chip B. The target direction includes the first direction and the second direction.

[0097] Wherein, the first direction is from left to right or from right to left, the second direction is from the top to the bottom or from the bottom to the top, at least one of the first light-emitting chip R, the second light-emitting chip G and the third light-emitting chip B has a length greater than 50 micrometers and less than 300 micrometers, the height of the packaging bracket is L1, the spacing between the edges of two adjacent light-emitting units 800 is L2, wherein L1 / L2 is greater than 0.05 and less than 0.2;

[0098] The height distance from the light-emitting surface of the light-emitting chip of the light-emitting unit 800 to the diffuser plate 600 is H, and the distance between the center points of two adjacent light-emitting units 800 is P, wherein the ratio of H to P is 1:1.1 to 1:1.8.

[0099] It should be noted that at least one of the first light-emitting chip R, the second light-emitting chip G, and the third light-emitting chip B has a size greater than 50 micrometers and less than 300 micrometers. This indicates that the display device 200 adopts a Mini backlight scheme. In this embodiment, the Mini backlight scheme aims to reduce the overall thickness of the display device 200 by minimizing the height distance H, resulting in a smaller design value for H. On the other hand, to reduce the overall cost of the display device 200, the backlight module typically uses as few light-emitting units 800 as possible to achieve the desired display effect. This leads to a larger design value for P. Therefore, in the Mini backlight scheme, the design value of H / P is 1:1.1 to 1:1.8.

[0100] In addition, in the Mini backlight solution, the H / P ratio is between 1:1.1 and 1:1.8. The ratio of the height L1 of the packaging bracket to the distance L2 between the edges of two adjacent light-emitting units will be greater than 0.05 and less than 0.2. In this way, the packaging bracket will not block the light emitted by the light-emitting chip too much, while still meeting the overall thickness design requirements of the display device.

[0101] As an example, the chip arrangement direction can be the axial direction along which the first light-emitting chip R, the second light-emitting chip G, and the third light-emitting chip B are arranged, and this axial direction is perpendicular to the body of the light-emitting chip.

[0102] It should be noted that the position of the second light-emitting chip G can be set between the first light-emitting chip R and the third light-emitting chip B. Since the order of the first light-emitting chip R, the second light-emitting chip G and the third light-emitting chip B encapsulated inside the light-emitting unit 800 is not limited, the chip arrangement direction can be from left to right, from right to left, from top to bottom, or from bottom to top, etc., and is not limited here.

[0103] In the above embodiments, the backlight module includes multiple partitions 700, which are driven by parallel circuits, allowing the brightness of the light-emitting units 800 in different partitions 700 to vary at the same time. Each light-emitting unit 800 includes a packaging bracket, in which a first light-emitting chip R, a second light-emitting chip G, and a third light-emitting chip B are disposed. Since the first light-emitting chip R, the second light-emitting chip G, and the third light-emitting chip B emit different colors, and at least one of the first light-emitting chip R, the second light-emitting chip G, and the third light-emitting chip B has a length greater than 50 micrometers and less than 300 micrometers, the above display device 200 is a display device based on a Mini backlight solution. In the Mini backlight solution, to reduce the number of light-emitting units 800, the distance P between the center points of two adjacent light-emitting units 800 is designed to be larger. Furthermore, to reduce the overall thickness of the display device 200, the height H from the light-emitting surface of the light-emitting chip of the light-emitting unit 800 to the diffuser plate 600 is designed to be smaller. Therefore, in the Mini backlight solution, the ratio of H to P is 1:1.1 to 1:1.8. When the H / P ratio in the Mini backlight solution is 1:1.1 to 1:1.8, the ratio of the height L1 of the packaging bracket to the distance L2 between the edges of two adjacent light-emitting units 800 will be greater than 0.05 and smaller than 0.05. At a ratio of 0.2, the packaging bracket does not excessively obstruct the light emission of the light-emitting chip, while still meeting the overall thickness design requirements of the display device. However, when the H / P ratio is between 1:1.1 and 1:1.8, and the L1 / L2 ratio is between 0.05 and 0.2, the packaging bracket will still obstruct the light emission of the light-emitting chip to some extent, inevitably causing shadow problems and resulting in display shadows on the display device 200. Based on this, in at least one partition 700, the chip arrangement direction of at least two adjacent light-emitting units 800 in at least one target direction is designed to be different, wherein the chip arrangement direction is along the first light-emitting chip in the light-emitting unit 800. The chip R, the second light-emitting chip G, and the third light-emitting chip B are arranged in a directional direction. The target direction includes the first direction and the second direction. In this way, in the Mini backlight solution, the regular arrangement of the light-emitting angles of each light-emitting unit 800 is disrupted by changing the chip arrangement direction of the light-emitting unit 800. This results in at least one adjacent light-emitting unit with a different light-emitting angle in the target direction. Thus, there are at least one adjacent light-emitting unit in the target direction whose light rays can complement each other. That is, two adjacent light-emitting units 800 can provide some supplementary light to the area where the other support is blocked. Therefore, the shadow can be reduced and the display shadow problem of the display device can be solved.

[0104] In some embodiments, in at least one partition 700, in a first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units 800 in the same partition 700 is within a preset angle range; in at least one partition 700, in a second direction, the chip arrangement directions of two adjacent light-emitting units 800 in the same partition are the same.

[0105] The preset angle range can be a symmetrical angle range centered at 90 degrees (90-x, 90+x). The value of x can be set according to actual needs, such as 0 or 5, and x is less than 90.

[0106] As an example, the preset angle range is 80 degrees to 100 degrees.

[0107] In this embodiment, in at least one partition 700, the angle between the extended lines of the chip arrangement direction of two adjacent light-emitting units 800 in the same partition 700 in the first direction is within a preset angle range. Therefore, it can be ensured that the light emission angles of two adjacent light-emitting units 800 in the first direction are different. In this way, the light emitted by two adjacent light-emitting units 800 in the same partition can complement each other, thereby eliminating the shadow between two adjacent light-emitting units 800 and solving the shadow problem between adjacent light-emitting units 800.

[0108] Reference Figure 6 , Figure 6 The diagram shows a first arrangement of light-emitting units 800 in some partitions 700 of the lamp board 300 in some embodiments. In the second direction, the chip arrangement direction of the kth column and the (k+2)th column of light-emitting units in the same partition 700 in at least one partition 700 is from left to right; the chip arrangement direction of the (k+1)th column of light-emitting units in the same partition 700 in at least one partition 700 is from the ground side to the sky side, where k is a positive integer.

[0109] It should be noted that, regardless of the arrangement of the light-emitting units 800, when multiple partitions 700 are deployed in the light panel 300, two partitions 700 can be identical (equivalent to replication), for example... Figure 6 Partitions 1 and 3, and two partitions 700, can also be at a certain angle (equivalent to one partition 700 being rotated relative to the other partition 700 by a certain angle), for example... Figure 6 Partition 1 and Partition 2 in the middle.

[0110] Depend on Figure 6It can be seen that the chip arrangement directions of the k-th column light-emitting unit and the (k+1)-th column light-emitting unit are perpendicular to each other, and the chip arrangement directions of the (k+2)-th column light-emitting unit and the (k+1)-th column light-emitting unit are perpendicular to each other. In this way, the light emitted by the k-th column light-emitting unit and the (k+1)-th column light-emitting unit in the same partition 700 can complement each other, and the light emitted by the (k+1)-th column light-emitting unit and the (k+2)-th column light-emitting unit can complement each other. This can eliminate the light shadow between two adjacent light-emitting units 800 and solve the problem of light shadow between adjacent light-emitting units.

[0111] Reference Figure 7 , Figure 7 The diagram shows a second arrangement of light-emitting units 800 in some partitions 700 of the lamp board 300 in some embodiments. In at least one partition 700, in the second direction, the chip arrangement direction of the kth column light-emitting units and the (k+2)th column light-emitting units in the same partition 700 is from left to right, and the chip arrangement direction of the (k+1)th column light-emitting units in the same partition 700 is from the ground side to the sky side, where k is a positive integer.

[0112] Depend on Figure 7 It can be seen that the chip arrangement directions of the k-th column light-emitting unit and the (k+1)-th column light-emitting unit are perpendicular to each other, and the chip arrangement directions of the (k+2)-th column light-emitting unit and the (k+1)-th column light-emitting unit are perpendicular to each other. In this way, the light emitted by the k-th column light-emitting unit and the (k+1)-th column light-emitting unit in the same partition 700 can complement each other, and the light emitted by the (k+1)-th column light-emitting unit and the (k+2)-th column light-emitting unit can complement each other. This can eliminate the light shadow between two adjacent light-emitting units 800 and solve the problem of light shadow between adjacent light-emitting units.

[0113] In some embodiments, further reference is made to Figure 8 and Figure 9 When the chip arrangement directions of two adjacent light-emitting units 800 are perpendicular to each other, Figure 8 A schematic diagram (top view) showing the changing chip arrangement direction of the light-emitting unit 800 is shown. Figure 9 It shows the basis Figure 8 A schematic diagram (front view) of the emission angle of the two light-emitting units 800 after the chip arrangement direction is changed in the middle method. Figure 8 It can be seen that before changing the chip arrangement direction, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S1. After changing the chip arrangement direction, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S2. The size of S2 is significantly larger than that of S1. Therefore, after the chip arrangement direction of the two adjacent light-emitting units 800 is changed to be perpendicular to each other, the complementary effect of the emitted light rays between the adjacent light-emitting units 800 is improved, thus improving the effect of eliminating lamp shadows and solving the lamp shadow problem.

[0114] In some embodiments, in at least one partition 700, in a first direction, the chip arrangement directions of two adjacent light-emitting units 800 in the same partition 700 are opposite; in at least one partition 700, in a second direction, the chip arrangement directions of two adjacent light-emitting units 800 in the same partition 700 are the same.

[0115] Among them, the opposite chip arrangement direction can be within the range of 180 degrees between the two chip arrangement directions, such as 170 degrees to 190 degrees, or 175 degrees to 185 degrees, etc.

[0116] In this embodiment, in at least one partition 700, the chip arrangement directions of two adjacent light-emitting units 800 in the same partition 700 are opposite in the first direction. In this way, the light emission angles of two adjacent light-emitting units 800 in the same partition 700 will be different, and the light emitted by two adjacent light-emitting units 800 can complement each other, thereby eliminating the shadow between adjacent light-emitting units 800 and solving the shadow problem between adjacent light-emitting units 800.

[0117] Reference Figure 10 , Figure 10 The diagram shows a third arrangement of light-emitting units 800 in some partitions 700 of the lamp board 300 in some embodiments. In at least one partition 700, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition 700 is from the ground side to the sky side, and the chip arrangement direction of the (k+1)th column of light-emitting units is from the sky side to the ground side, where k is a positive integer.

[0118] It should be noted that the multiple sections 700 in the light panel 300 can be consistent or rotated at a certain angle.

[0119] In this way, in at least one partition 700, the chip arrangement direction of the kth column of light-emitting units in the same partition 700 in the second direction is from the ground side to the sky side, and the chip arrangement direction of the (k+1)th column of light-emitting units in the same partition 700 is from the sky side to the ground side. Thus, in the second direction, the chip arrangement directions between the kth column and the (k+1)th column of light-emitting units in the same partition 700 are opposite, and the emission angles of the kth column and the (k+1)th column of light-emitting units will be completely different. Therefore, the emitted light rays of the kth column and the (k+1)th column of light-emitting units in the same partition 700 can complement each other, which can eliminate the lamp shadow between the kth column and the (k+1)th column of light-emitting units in the same partition 700 and solve the lamp shadow problem between adjacent light-emitting units 800.

[0120] In some embodiments, refer to Figure 11 , Figure 11 A schematic diagram (top view) showing the changing chip arrangement direction of the light-emitting unit 800 is shown. Figure 11 In the diagram, changing the chip arrangement is equivalent to rotating the left-side light-emitting unit 800 clockwise by 90 degrees and the right-side light-emitting unit 800 counterclockwise by 90 degrees. Figure 11 Further reference Figure 12 Based on Figure 11 After changing the chip arrangement direction in this way Figure 12 The diagram shows a schematic representation (front view) of the emission angle of two light-emitting units 800 in some embodiments. Figure 12 It can be seen that before the chip arrangement direction is changed, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S1. After the chip arrangement direction is changed, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S3. The size of S3 is significantly larger than that of S1. After the chip arrangement direction of the two adjacent light-emitting units 800 is changed to the opposite direction, the complementary effect of the emitted light rays between the adjacent light-emitting units 800 is improved. Therefore, the effect of eliminating lamp shadows can be improved, thereby solving the lamp shadow problem.

[0121] In some embodiments, refer to Figure 13 , Figure 13 A schematic diagram (top view) showing the changing chip arrangement direction of the light-emitting unit 800 is shown. Figure 13 In the process of changing the chip arrangement, it's equivalent to keeping the left-side light-emitting unit 800 unchanged and rotating the right-side light-emitting unit 800 counterclockwise by 180 degrees; Figure 13 Further reference Figure 14 Based on Figure 13 After changing the chip arrangement direction in this way Figure 14 The diagram shows a schematic representation (front view) of the emission angle of two light-emitting units 800 in some embodiments. Figure 14 It can be seen that before the chip arrangement direction is changed, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S1. After the chip arrangement direction is changed, the intersection area of ​​the light emitted by the first light-emitting chip R in the adjacent light-emitting unit 800 before reaching the diffuser plate is S4. The size of S4 is significantly larger than that of S1. After the chip arrangement direction of the two adjacent light-emitting units 800 is changed to the opposite direction, the complementary effect of the emitted light rays between the adjacent light-emitting units 800 is improved. Therefore, the effect of eliminating lamp shadows can be improved, thereby solving the lamp shadow problem.

[0122] In some embodiments, in at least one partition 700, the angle between the extended lines of the chip arrangement direction of any two adjacent light-emitting units 800 in the same partition 700 is within a preset angle range.

[0123] In this way, in at least one partition 700, the angle between the extended lines of the chip arrangement direction of any two adjacent light-emitting units 800 in the same partition 700 is set within a preset angle range. Thus, in both the first and second directions, there are adjacent light-emitting units 800 with different light-emitting angles. Whether in the first or second direction, the light emitted by adjacent light-emitting units 800 can complement each other. Therefore, the light emission can be complemented globally, resulting in better supplementary lighting and eliminating the shadow between adjacent light-emitting units globally.

[0124] Reference Figure 15 , Figure 15 The diagram shows a fourth arrangement of light-emitting units 800 in a partial partition 700 of the lamp board 300 in some embodiments. In the partial partition 700, the chip arrangement direction of any light-emitting unit 800 in the same partition 700 is from left to right or from top to bottom. Any two light-emitting units 800 with the same chip arrangement direction are not adjacent. In this way, the chip arrangement directions of any adjacent light-emitting units 800 will be perpendicular to each other.

[0125] In this way, the chip arrangement direction of adjacent light-emitting units 800 in the same partition 700 can be perpendicular to each other. Therefore, the light emission angle between adjacent light-emitting units 800 is different globally, and the emitted light rays can complement each other, so the supplementary lighting effect is better and the shadow between adjacent light-emitting units 800 can be eliminated globally.

[0126] Reference Figure 16 , Figure 16 The diagram shows a fifth arrangement of some partitions 700 in the lamp board 300 in some embodiments. In some partitions 700, the chip arrangement direction of any light-emitting unit 800 in the same partition 700 is from left to right or from ground to sky. Any two light-emitting units 800 with the same chip arrangement direction are not adjacent. In this way, the chip arrangement directions of any adjacent light-emitting units 800 will be perpendicular to each other.

[0127] In this way, the chip arrangement direction of adjacent light-emitting units 800 in the same partition 700 can be perpendicular to each other. Therefore, the light emission angle between adjacent light-emitting units 800 is different globally, and the emitted light rays can complement each other, so the supplementary lighting effect is better and the shadow between adjacent light-emitting units 800 can be eliminated globally.

[0128] In some embodiments, in at least one partition 700, in the first direction, the angle between the extension lines of the chip arrangement directions of two adjacent light-emitting units 800 in the same partition 700 is within a preset angle range; in at least one partition 700, in the second direction, the chip arrangement directions of all light-emitting units 800 in the kth column of the same partition 700 are the same, the chip arrangement directions of all light-emitting units 800 in the (k+2)th column of the same partition 700 are the same, and the chip arrangement directions of the kth column of the light-emitting units are different from those of the (k+2)th column of the light-emitting units, and the chip arrangement directions of any two adjacent light-emitting units 800 in the (k+1)th column of the light-emitting units are opposite, where k is a positive integer.

[0129] Thus, in at least one partition 700, the angle between the extended lines of the chip arrangement direction of the k-th column of light-emitting units and the chip arrangement direction of the (k+1)-th column of light-emitting units in the same partition along the first direction will be within a preset angle range, and the angle between the extended lines of the chip arrangement direction of the (k+1)-th column of light-emitting units and the chip arrangement direction of the (k+2)-th column of light-emitting units will also be within a preset angle range. Therefore, the emission angles between the k-th column of light-emitting units and the (k+1)-th column of light-emitting units are different, and the emission angles between the (k+1)-th column of light-emitting units and the (k+2)-th column of light-emitting units are also different. The emitted light rays from the k-th column of light-emitting units and the (k+1)-th column of light-emitting units can be complementary. The light emitted by the two columns of light-emitting units can also complement each other, which helps to eliminate the shadows between the light-emitting units. In addition, since the chip arrangement direction of any two adjacent light-emitting units 800 in the (k+1)th column of light-emitting units is opposite, the amount of supplementary light from the (k+1)th column of light-emitting units toward the (k)th and (k+2)th columns of light-emitting units is nearly consistent. This ensures that the local supplementary lighting effect between the (k)th and (k+1)th columns of light-emitting units is nearly consistent with the local supplementary lighting effect between the (k+1)th and (k+2)th columns of light-emitting units. Therefore, the supplementary lighting is more uniform, which can improve the overall supplementary lighting effect of at least one partition 700 and effectively solve the problem of shadows between light-emitting units.

[0130] Continue to refer to Figure 4 When the chip arrangement direction of all light-emitting units 800 is from left to right, refer to Figure 5When emitting red or blue light individually, the light emitted by the first light-emitting chip R or the third light-emitting chip B near the bracket in the light-emitting unit 800 is significantly blocked by the bracket. Furthermore, due to the regular distribution of the emission angles of all light-emitting units 800, the emitted light rays from adjacent light-emitting units 800 are difficult to complement each other. This results in lower light brightness in the bracket-blocked area between adjacent light-emitting units, i.e., the appearance of shadows. Additionally, in the edge area of ​​the lamp panel 300, the light-emitting chips near the bracket are also blocked from emitting light, and there is no light from other light-emitting chips to supplement them. Therefore, the light brightness in the edge area of ​​the lamp panel 300 is also lower, i.e., shadows appear. For example... Figure 5 In the first luminous effect diagram, the left edge area has almost no red light. For example, Figure 5 The right edge area of ​​the third luminous effect diagram shows almost no blue light.

[0131] Additionally, it should be noted that because the edges of the light panel 300 have either less blue light or less red light, after the light is combined, the light used for combining the light will either lack blue light and thus appear reddish, or lack red light and appear bluedish. Therefore, there will still be a color distortion problem in the edge area of ​​the light panel 300.

[0132] Reference Figure 17 , Figure 17 A sixth arrangement diagram of light-emitting units 800 in some partitions 700 of the lamp board 300 is shown in some embodiments. In at least one partition 700, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition 700 is from the ground side to the sky side; in at least one partition 700, in the second direction, the (k+1)th column of light-emitting units in the same partition 700 includes a first type of light-emitting unit with the chip arrangement direction from the left to the right side, and a second type of light-emitting unit with the chip arrangement direction from the right to the left side, and the first type of light-emitting units and the second type of light-emitting units are alternately arranged in the (k+1)th column of light-emitting units; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+2)th column of light-emitting units in the same partition 700 is from the sky side to the ground side, where k is a positive integer.

[0133] Depend on Figure 17It can be seen that within the same partition 700, the chip arrangement directions between the k-th and (k+1)-th light-emitting units are perpendicular to each other, and the chip arrangement directions between the (k+2)-th and (k+1)-th light-emitting units are also perpendicular. This ensures a significant difference in the emission angles between the k-th and (k+1)-th light-emitting units, and thus, the emitted light rays from the k-th and (k+1)-th light-emitting units can complement each other. The light emission relationships between them can also complement each other, which helps to eliminate lamp shadows; in addition, the first type of light-emitting unit and the second type of light-emitting unit are alternately set in the (k+1)th column, so that the number of different light-emitting chips near the (k)th column light-emitting unit and the number of different light-emitting chips near the (k+2)th column light-emitting unit are nearly the same. In this way, the light emitted by the (k+1)th column light-emitting unit has a nearly consistent supplementary lighting effect on the (k)th column light-emitting unit and the (k+2)th column light-emitting unit, and the supplementary lighting amount is more uniform. Therefore, the supplementary lighting effect is better and can solve the display shadow problem between the 800 light-emitting units.

[0134] In addition, for each partition 700, not all the first light-emitting chips R and the third light-emitting chips B in the row or column of light-emitting units near the edge of partition 700 will be in the position closest to the bracket. Therefore, in the row or column of light-emitting units 800 near the edge of partition, at least some of the first light-emitting chips R and the third light-emitting chips B will not be in the position closest to the bracket. In this way, the light emitted by these first light-emitting chips R and the third light-emitting chips B can illuminate the edge area of ​​the partition. In this way, even if there are no other chips to supplement the light at the edge of the partition, the shadow at the edge of the partition can be eliminated. Therefore, the shadow at the edge of the whole machine or the edge of the light board can be eliminated, and the display shadow problem at the edge of the whole machine or the edge of the light board can be solved.

[0135] In addition, by Figure 17 It can be seen that if all the partitions in the entire light panel 300 are composed of partitions 700, then for all the edges of the partitions, the light output of the first light-emitting chip R and the third light-emitting chip B in the light panel 300 is approximately the same at the edge of the light panel, so there will be no color deviation problem.

[0136] In some embodiments, in at least one partition 700, in the first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units 800 in a portion of the same partition 700 is within a preset angle range, while the chip arrangement directions of two adjacent light-emitting units 800 in the remaining portion are opposite.

[0137] In this embodiment, regardless of whether the chip arrangement directions of adjacent light-emitting units 800 in the first direction are opposite or the included angle between the extended lines is within a preset angle range, it can be ensured that the light emission angles of adjacent light-emitting units 800 in the same partition 700 in the first direction are different. Therefore, the light emitted by adjacent light-emitting units 800 can complement each other, thereby eliminating the shadow between adjacent light-emitting units 800.

[0138] Reference Figure 18 , Figure 18 A seventh arrangement diagram of light-emitting units 800 in some partitions 700 of the lamp board 300 is shown in some embodiments. In at least one partition 700, in the second direction, the chip arrangement direction of the kth column and the (k+3)th column of light-emitting units in the same partition 700 is from the top side to the ground side; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+1)th column and the (k+4)th column of light-emitting units in the same partition 700 is from the ground side to the top side; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+2)th column of light-emitting units in the same partition 700 is from the left side to the right side, where k is a positive integer.

[0139] It can be seen that in the partial partition 700, the chip arrangement directions of the light-emitting units in the kth column and the (k+1)th column of the same partition 700 are opposite, the chip arrangement directions between the (k+1)th column and the (k+2)th column are perpendicular, the chip arrangement directions between the (k+2)th column and the (k+3)th column are perpendicular, and the chip arrangement directions between the (k+3)th column and the (k+4)th column are opposite. Therefore, in the first direction, the chip arrangement directions of two adjacent light-emitting units 800 in the partial partition 700 are either perpendicular or opposite. This ensures that the light emission angles of any two adjacent light-emitting units 800 in the partial partition 700 are different, and the light rays emitted by any two adjacent light-emitting units 800 can complement each other, thereby eliminating the shadow between adjacent light-emitting units 800 and solving the shadow problem between adjacent light-emitting units.

[0140] Reference Figure 19 , Figure 19The diagram illustrates an eighth arrangement of light-emitting units 800 in some partitions 700 of the lamp board 300 in some embodiments. In at least one partition 700, in the second direction, the chip arrangement direction of the kth column and the (k+4th)th column of light-emitting units in the same partition 700 is from the top side to the ground side; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+1th)th column and the (k+5th)th column of light-emitting units in the same partition 700 is from the left side to the right side; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+2th)th column and the (k+6th)th column of light-emitting units in the same partition 700 is from the ground side to the top side; in at least one partition 700, in the second direction, the chip arrangement direction of the (k+3rd)th column of light-emitting units in the same partition 700 is from the right side to the left side, where k is a positive integer.

[0141] Depend on Figure 19 As can be seen, in at least one partition 700, this embodiment sets the chip arrangement direction of each column of light-emitting units 800 in the second direction so that the chip arrangement directions of two adjacent columns of light-emitting units 800 are opposite or perpendicular to each other. In this way, the difference between the light emission angles of two adjacent columns of light-emitting units 800 is large enough, so the light emitted by two adjacent columns of light-emitting units 800 can complement each other, thereby eliminating the lamp shadow between adjacent light-emitting units 800.

[0142] It should be noted that the aforementioned back panel 400 display device often has a color deviation problem at the edges of the whole machine or at the splicing seams of the light panel, such as being too red or too blue. The process of solving the color deviation problem will be explained in detail below.

[0143] In some embodiments, the illustration is based on the left edge of the light panel and the chip arrangement order from left to right, as an example. (Refer to...) Figure 20 , Figure 20 The diagram shows a top view and a front view illustrating the relative positions of the left edge of the lamp panel and the light-emitting unit 800. From the front view, it can be seen that there is a certain distance between the light emitted from the first light-emitting chip R at the incident point on the diffuser plate and the left edge of the lamp panel (refer to the highlighted area). This results in a portion of the area between the left edge of the lamp panel and the light-emitting unit 800 having no red light or only very little red light emanating from it to the diffuser plate. Therefore, when the chips are arranged from left to right, the light emitted from the light-emitting chips closer to the support is difficult to reach the edge area of ​​the lamp panel, resulting in a lack of red light at the edge of the lamp panel. Therefore, referring to... Figure 4 It is known that with the current arrangement of the 800 light-emitting units, the left edge area of ​​the light panel will lack red light, and the right edge area of ​​the light panel will lack blue light. After the light is combined, the left edge area of ​​the light panel will be bluish and the right edge area of ​​the light panel will be reddish, so there is a color deviation problem.

[0144] In some embodiments, the illustration takes the left edge of the lamp board and the chip arrangement order from the top side to the ground side as an example, referring to... Figure 21 , Figure 21 The top view and front view show the relative positions of the left edge of the lamp panel and the light-emitting unit 800, combined with Figure 20 and Figure 21 As can be seen from the front view, after adjusting the chip arrangement direction from left to right to top to bottom, the light emitted by the first light-emitting chip R can reach the left edge area of ​​the lamp board. Therefore, some red light will reach the left edge area of ​​the lamp board, which can improve the phenomenon of insufficient red light in the left edge area of ​​the lamp board; based on the same principle, Figure 21 The arrangement of the central light-emitting unit 800 can also improve the lack of blue light on the right side of the light panel, which will not be elaborated here.

[0145] In some embodiments, the illustration takes the left edge of the lamp board and the chip arrangement order from right to left as an example, referring to... Figure 22 , Figure 22 The top view and front view show the relative positions of the left edge of the lamp panel and the light-emitting unit 800, combined with Figure 20 and Figure 22 As can be seen from the front view, after adjusting the chip arrangement direction from left to right to right to left, the light emitted by the first light-emitting chip R can reach the left edge area of ​​the lamp board. Therefore, some red light will reach the left edge area of ​​the lamp board, which can improve the phenomenon of insufficient red light in the left edge area of ​​the lamp board; based on the same principle, Figure 22 The arrangement of the central light-emitting unit 800 can also improve the lack of blue light on the right side of the light panel, which will not be elaborated here.

[0146] Based on this, it can be seen that by adjusting the chip arrangement direction of the light-emitting unit 800 near the edge of the light panel, the color deviation problem at the edge of the light panel can be improved or solved.

[0147] by Figure 15 Taking the arrangement of the light-emitting units 800 as an example, the lamp panel 300 is composed of multiple partitions 700. Therefore, for each of the four edges of the lamp panel 300, there are... Figure 21 The relative positional relationship between the edge of the central lamp panel and the light-emitting unit 800 ensures that each lamp panel edge will not be completely lacking in red or blue light, thus improving the color distortion problem to a certain extent.

[0148] And regarding Figure 17 The arrangement of the light-emitting units 800 is such that the lamp board 300 is composed of multiple partitions 700. Therefore, regarding the left edge of the lamp board 300, the chip arrangement direction of all light-emitting units 800 near the left edge is from the top to the bottom. Therefore, combined with... Figure 21It can be seen that the light output of all the first light-emitting chips R and the third light-emitting chips B to the left edge of the lamp panel is nearly the same, so there will be no color shift problem at the left edge of the lamp panel. For the same reason, the chip arrangement direction of all the light-emitting units 800 near the right edge of the lamp panel is from the ground side to the sky side, so there will be no color shift problem at the right edge of the lamp panel.

[0149] For the edge of the roof-side light panel, combined with Figure 21 It can be seen that in each partition, the amount of red and blue light emitted from the (k+1)th column of light-emitting units 800 near the edge of the top-side light panel is approximately the same; furthermore, in each partition, combined with Figure 22 It can be seen that the blue light emitted from the kth column of light-emitting units 800 near the edge of the top-side light panel is approximately the same as the red light emitted from the (k+2)th column of light-emitting units 800 near the edge of the top-side light panel. Therefore, the total output of red and blue light from a row of light-emitting units 800 near the edge of the top-side light panel is approximately the same for the entire edge of the top-side light panel, so there will be no color distortion problem at the edge of the top-side light panel; and for the same reason, there will be no color distortion problem at the edge of the ground-side light panel.

[0150] Based on this, we can know that based on Figure 17 The arrangement of the 800 light-emitting units in the center can completely solve the color deviation problem at the edge of the light panel.

[0151] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0152] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A display device, characterized by comprising: The display device includes: Display panel; Diffuser plate; Backlight module, the backlight module comprising: Multiple partitions, which are driven by parallel circuits, can make the brightness of the light-emitting units in different partitions different at the same time; At least one partition includes multiple light-emitting units; wherein, the light-emitting unit includes a packaging bracket, and a first light-emitting chip, a second light-emitting chip and a third light-emitting chip are disposed in the packaging bracket, and the first light-emitting chip, the second light-emitting chip and the third light-emitting chip emit different colors; Wherein, at least one of the first light-emitting chip, the second light-emitting chip, and the third light-emitting chip has a length greater than 50 micrometers and less than 300 micrometers; Furthermore, the height of the encapsulation bracket is L1, and the distance between the edges of two adjacent light-emitting units is L2, wherein L1 / L2 is greater than 0.05 and less than 0.2; The height distance from the light-emitting surface of the light-emitting chip of the light-emitting unit to the diffuser plate is H, and the distance between the center points of two adjacent light-emitting units is P, wherein the ratio of H to P is 1:1.1 to 1:1.8; In this case, the chip arrangement directions of two adjacent light-emitting units in at least one partition and at least one target direction are different. The chip arrangement direction is the direction in which the chips in the light-emitting units are arranged along the first light-emitting chip, the second light-emitting chip and the third light-emitting chip. The target direction includes a first direction and a second direction.

2. The apparatus of claim 1, wherein, In the at least one partition, in the first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in the same partition is within a preset angle range. In the at least one partition, in the second direction, the chip arrangement direction of all light-emitting units in the kth column of the same partition is the same, the chip arrangement direction of all light-emitting units in the (k+2)th column is the same, and the chip arrangement direction of the kth column is different from that of the (k+2)th column, and the chip arrangement direction of any two adjacent light-emitting units in the (k+1)th column is opposite, where k is a positive integer.

3. The apparatus of claim 1 or 2, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition is from the ground side to the sky side; In the at least one partition, in the second direction, the (k+1)th column of light-emitting units in the same partition includes a first type of light-emitting unit with the chip arrangement direction from left to right, and a second type of light-emitting unit with the chip arrangement direction from right to left, and the first type of light-emitting unit and the second type of light-emitting unit are alternately arranged in the (k+1)th column of light-emitting units. In the at least one partition, in the second direction, the chip arrangement direction of the (k+2)th column of light-emitting units in the same partition is from the top side to the bottom side, where k is a positive integer.

4. The apparatus of claim 1, wherein, In the at least one partition, in the first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in the same partition is within a preset angle range; in the at least one partition, in the second direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are the same.

5. The apparatus of claim 1 or 4, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+2)th column light-emitting unit in the same partition is from left to right, and the chip arrangement direction of the (k+1)th column light-emitting unit in the same partition is from the ground side to the sky side, where k is a positive integer.

6. The apparatus of claim 1 or 4, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+2)th column light-emitting unit in the same partition is from left to right, and the chip arrangement direction of the (k+1)th column light-emitting unit in the same partition is from the top side to the bottom side, where k is a positive integer.

7. The apparatus of claim 1, wherein, In the at least one partition, in the first direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are opposite; in the at least one partition, in the second direction, the chip arrangement directions of two adjacent light-emitting units in the same partition are the same.

8. The apparatus of claim 1 or 7, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column of light-emitting units in the same partition is from the ground side to the sky side, and the chip arrangement direction of the (k+1)th column of light-emitting units is from the sky side to the ground side, where k is a positive integer.

9. The apparatus of claim 1, wherein, In the at least one partition, the angle between the extended lines of the chip arrangement direction of any two adjacent light-emitting units in the same partition is within a preset angle range.

10. The apparatus of claim 9, wherein, In the at least one partition, the chip arrangement direction of the light-emitting units in the same partition is from left to right, or from the top side to the bottom side; Alternatively, in at least one partition, the chip arrangement direction of the light-emitting units in the same partition is from left to right, or from the ground side to the sky side.

11. The apparatus of claim 1, wherein, In the at least one partition, in the first direction, the angle between the extended lines of the chip arrangement directions of two adjacent light-emitting units in a part of the same partition is within a preset angle range, while the chip arrangement directions of two adjacent light-emitting units in the remaining part are opposite.

12. The apparatus of claim 1 or 11, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+3)th column light-emitting unit in the same partition is from the top side to the bottom side; In the at least one partition, in the second direction, the chip arrangement direction of the (k+1)th column light-emitting unit and the (k+4)th column light-emitting unit in the same partition is from the ground side to the sky side; In the at least one partition, in the second direction, the arrangement direction of the light-emitting unit chips in the (k+2)th column of the same partition is from left to right, where k is a positive integer.

13. The apparatus of claim 1 or 11, wherein, In the at least one partition, in the second direction, the chip arrangement direction of the kth column light-emitting unit and the (k+4th column light-emitting unit) of the same partition is from the top side to the bottom side; In the at least one partition, in the second direction, the chip arrangement direction of the (k+1)th column light-emitting unit and the (k+5)th column light-emitting unit in the same partition is from left to right. In the at least one partition, in the second direction, the chip arrangement direction of the (k+2)th column light-emitting unit and the (k+6)th column light-emitting unit in the same partition is from the ground side to the sky side; In the at least one partition, in the second direction, the chip arrangement direction of the (k+3)th column of light-emitting units in the same partition is from right to left, where k is a positive integer.

14. The apparatus of any one of claims 2, 4, 9, and 11, wherein, The preset angle range is 80 degrees to 100 degrees.

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