Display device
By employing a lens in the backlight module of a liquid crystal display device to increase the light emission angle of the first light-emitting area and an unlensed second light-emitting area, the problem of color shift at the edge of the display device under white backlight is solved, resulting in a more uniform light distribution and higher display quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HISENSE VISUAL TECH CO LTD
- Filing Date
- 2024-12-20
- Publication Date
- 2026-06-23
Smart Images
Figure CN122260686A_ABST
Abstract
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 rapid development of display technology, display devices are being used more and more widely. LCD screens, due to their advantages such as low power consumption, small size, and low radiation, have become the mainstream display screen in display devices.
[0003] LCD panels are non-self-emissive panels and require a backlight module to function. The backlight module provides uniform light, and the pixels on the LCD panel control the transmission and blocking of light to form an image.
[0004] In backlight modules, a backplane typically uses LED (Light Emitting Diode) chip packages with surface-mount LED chips. However, when the backlight module provides white backlight, the display device exhibits a color shift issue at the side edges. Summary of the Invention
[0005] Therefore, it is necessary to provide a display device to improve the technical problem of side edge color distortion in the display device when the backlight module provides white backlight.
[0006] In a first aspect, a display device is provided, comprising:
[0007] The display panel is configured to display images;
[0008] A backlight module, located on the light-incident side of the display panel, is configured to provide a light source for the display panel;
[0009] The backlight module includes:
[0010] The first light-emitting region includes multiple first light-emitting devices arranged in an array;
[0011] The second light-emitting region includes at least a sub-region disposed on one side of the first light-emitting region in a first direction; the second light-emitting region includes a plurality of second light-emitting devices arranged at intervals; the first spacing between each of the first light-emitting devices is greater than or equal to the second spacing between each of the second light-emitting devices; wherein...
[0012] The first light-emitting device includes:
[0013] First packaging bracket;
[0014] A first-color light-emitting chip, a second-color light-emitting chip, and a third-color light-emitting chip are arranged sequentially along the first direction and disposed within the first packaging bracket; the emitted light from the first-color light-emitting chip, the second-color light-emitting chip, and the third-color light-emitting chip is mixed to produce white light;
[0015] A lens, which is mounted on the first packaging bracket and located on the light-emitting side of the first color light-emitting chip, the second color light-emitting chip and the third color light-emitting chip;
[0016] The second light-emitting device includes at least:
[0017] Second packaging bracket;
[0018] A first color light-emitting chip, a second color light-emitting chip, and a second color light-emitting chip are disposed within the second packaging bracket.
[0019] In the aforementioned display device, the first light-emitting area employs a first light-emitting device covered with a lens. The lens increases the light-emitting angle, allowing the first light-emitting area to achieve the desired light-emitting effect with a smaller number of first light-emitting devices. By setting a second light-emitting device without a lens in the second light-emitting area, the uniform light emitted by the second light-emitting device can make the light more uniform on at least one side of the first light-emitting area in the first direction. This improves the light emission uniformity of the backlight module, thereby mitigating color shift issues when displaying a full white field, enhancing the display uniformity, and improving image quality.
[0020] In one embodiment, the second light-emitting region includes:
[0021] The first sub-region is located on the first side of the first light-emitting region; the first side of the first light-emitting region is the side of the first color light-emitting chip in the first light-emitting device that is away from the second color light-emitting chip.
[0022] The second sub-region is located on the second side of the first light-emitting region; the second side of the first light-emitting region is the side of the third color light-emitting chip in the first light-emitting device that is away from the second color light-emitting chip.
[0023] In the first sub-region and the second sub-region, each of the second light-emitting devices is arranged along a second direction, which is perpendicular to the first direction.
[0024] By setting a first sub-region and a second sub-region on both sides of the first light-emitting area in a first direction, and arranging the second light-emitting devices in the first and second sub-regions at equal intervals along the second direction, the light distribution in the first and second sub-regions in the second direction can be made more uniform. When the first sub-region supplements the left edge of the first light-emitting area, because the light distribution in the first sub-region is uniform, it can effectively cover and supplement the illumination of the left edge, thereby achieving a uniform supplementary lighting effect on the left edge. Similarly, the second sub-region can also achieve a uniform supplementary lighting effect on the right edge. Therefore, the edge color shift problem on both sides of the first light-emitting area can be effectively improved, the uniformity of the backlight effect on both sides of the backlight module can be enhanced, and the display quality of the display device can be improved.
[0025] In one embodiment, in the second light-emitting device of the first sub-region, each light-emitting chip is arranged along the first direction, and one of the second color light-emitting chip and the third color light-emitting chip is disposed close to the first light-emitting region.
[0026] By making the light emission color of the fourth or fifth color light-emitting chip consistent with that of the first color light-emitting chip, the light emitted by the fourth or fifth color light-emitting chip can supplement the light emitted by the first color light-emitting chip that is blocked by the first packaging bracket, thereby improving the color deviation phenomenon in the first light-emitting area and enhancing the consistency of the overall light emission effect.
[0027] In the second light-emitting device of the second sub-region, each light-emitting chip is arranged along the first direction, and one of the first color light-emitting chip and the second color light-emitting chip is disposed close to the first light-emitting region.
[0028] By making the emission color of the sixth or fifth color light-emitting chip consistent with that of the third color light-emitting chip, the light emitted by the sixth or fifth color light-emitting chip can supplement the light emitted by the third color light-emitting chip that is blocked by the first packaging bracket, thereby improving the color deviation phenomenon in the first light-emitting area and enhancing the consistency of the overall light-emitting effect.
[0029] In one embodiment, the second light-emitting region further includes:
[0030] The third sub-region is located on the third side of the first light-emitting region;
[0031] The fourth sub-region is located on the fourth side of the first light-emitting region; the third side and the fourth side are the two opposite sides of the first light-emitting region in the second direction;
[0032] In the third and fourth sub-regions, each of the second light-emitting devices is arranged along the first direction.
[0033] By setting a third and a fourth sub-region, the brightness of the two edges of the first light-emitting area in the second direction can be effectively increased, thereby improving the overall display uniformity of the display device.
[0034] In one embodiment, the backlight module further includes:
[0035] The light panel is configured to support each of the first light-emitting device and the second light-emitting device;
[0036] An expansion plate is disposed between the lamp plate and the display panel;
[0037] Wherein, the second spacing is greater than or equal to the reference distance and less than or equal to a first preset multiple of the reference distance; wherein, the reference distance is the distance between the expansion plate and the lamp plate.
[0038] By making the second spacing greater than or equal to the reference distance and less than or equal to a first preset multiple of the reference distance, on the one hand, the light from each second light-emitting device can be more concentrated; on the other hand, the light from each second light-emitting device can be more effectively diffused and mixed through the expansion plate during transmission, thereby achieving a supplementary lighting effect.
[0039] In one embodiment, the distance between the second light-emitting device and the first light-emitting device is greater than or equal to the second spacing and less than or equal to a second preset multiple of the reference distance; wherein the second preset multiple is greater than the first preset multiple.
[0040] The third spacing is between the second spacing and the reference distance, which is a second preset multiple. This allows the second light-emitting device to provide sufficient supplementary light to the first light-emitting area, while ensuring that the second light-emitting device is not too close to the first light-emitting area to avoid light interference.
[0041] In one embodiment, the first spacing is greater than or equal to the reference distance and less than or equal to a third preset multiple of the reference distance; wherein the third preset multiple is greater than the second preset multiple.
[0042] By making the first spacing greater than or equal to the reference distance, sufficient space is provided for the light from the first emitting region to diffuse and mix during transmission. By making the first spacing less than or equal to a third preset multiple of the reference distance H, excessive light loss from the first emitting region during transmission is prevented, while also avoiding uneven light distribution due to excessive distance.
[0043] Secondly, a display device is provided, comprising:
[0044] The display panel is configured to display images;
[0045] A backlight module, located on the light-incident side of the display panel, is configured to provide a light source for the display panel;
[0046] The backlight module includes:
[0047] A first light-emitting region, a second light-emitting region, a third light-emitting region arranged along a first direction, and light-emitting devices disposed in each light-emitting region;
[0048] in,
[0049] The light-emitting device in the second light-emitting region includes:
[0050] Packaging bracket;
[0051] A first-color light-emitting chip, a second-color light-emitting chip, and a third-color light-emitting chip are arranged along a first direction; disposed within the packaging bracket; the emitted light from the first-color light-emitting chip, the second-color light-emitting chip, and the third-color light-emitting chip is mixed to produce white light;
[0052] A lens, which is mounted on the packaging bracket and located on the light-emitting side of the first color light-emitting chip, the second color light-emitting chip and the third color light-emitting chip;
[0053] The light-emitting device in the first light-emitting region includes at least a first color light-emitting chip;
[0054] The light-emitting devices in the third light-emitting region include at least a third color light-emitting chip.
[0055] The aforementioned display device includes a first light-emitting area, a second light-emitting area, and a third light-emitting area arranged along a first direction. The second light-emitting area employs a light-emitting device covered with a lens. The lens increases the light emission angle, allowing the second light-emitting area to achieve the desired light emission effect with a smaller number of light-emitting devices. By setting a light-emitting device including a first-color light-emitting chip in the first light-emitting area, the first-color light emitted by the first light-emitting area can supplement the edge of the second light-emitting area near the first light-emitting area with first-color light. By setting a light-emitting device including a third-color light-emitting chip in the third light-emitting area, the third-color light emitted by the third light-emitting area can supplement the edge of the second light-emitting area near the third light-emitting area with third-color light. This results in more uniform light color on both sides of the edge of the second light-emitting area, effectively improving the color shift problem in white light display. Therefore, the light emission uniformity of the backlight module can be improved, thereby improving the display uniformity of the display device and enhancing image quality.
[0056] In one embodiment, the light-emitting device in the first light-emitting region further includes a lens located on the light-emitting side of the first color light-emitting chip;
[0057] The light-emitting device in the third light-emitting region also includes a lens located on the light-emitting side of the third color light-emitting chip;
[0058] The spacing between each light-emitting device in the first light-emitting region, the second light-emitting region, and the third light-emitting region is equal.
[0059] By making the spacing between the light-emitting devices in the first, second, and third light-emitting regions equal, the light-emitting devices in the entire light-emitting region can be evenly arranged, thereby improving the light emission uniformity of the entire light-emitting region.
[0060] In one embodiment, the first spacing between the light-emitting devices in the second light-emitting region is greater than or equal to the second spacing between the light-emitting devices in the first light-emitting region; and the third spacing between the light-emitting devices in the third light-emitting region is less than the first spacing.
[0061] Neither the light-emitting devices in the first nor the third light-emitting regions have lenses, resulting in a relatively small emission angle. Therefore, making the second and third spacings smaller than the first spacing—that is, arranging the light-emitting devices in the first and third light-emitting regions more densely—allows for a more uniform light distribution in both regions. Consequently, when the first and third light-emitting regions provide supplementary lighting to both sides of the second light-emitting region, the supplementary lighting effect is more uniform and reliable. Attached Figure Description
[0062] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0063] Figure 1 This is one of the cross-sectional structural schematic diagrams of a display device provided in some embodiments of this application;
[0064] Figure 2 This is a schematic diagram showing the arrangement of the first light-emitting devices in the first light-emitting area of a backlight module provided in some embodiments of this application;
[0065] Figure 3 A cross-sectional schematic diagram of a first light-emitting device provided in some embodiments of this application;
[0066] Figure 4One of the schematic diagrams showing the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application;
[0067] Figure 5 A second schematic diagram showing the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application;
[0068] Figure 6 The third schematic diagram shows the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application;
[0069] Figure 7 Fourth schematic diagram of the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application;
[0070] Figure 8 This is a second schematic cross-sectional view of a display device provided in some embodiments of this application;
[0071] Figure 9 This is the third schematic diagram of the cross-sectional structure of a display device provided in some embodiments of this application;
[0072] Figure 10 Fifth schematic diagram of the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application;
[0073] Figure 11 This is the sixth schematic diagram showing the arrangement of light-emitting devices in the light-emitting area of a backlight module provided in some embodiments of this application. Detailed Implementation
[0074] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0076] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
[0077] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.
[0078] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.
[0079] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.
[0080] In one embodiment, a display device is provided. The display device can be a liquid crystal display (LCD), a liquid crystal monitor, an instrument panel, or other display products, or a mobile terminal product such as a smartphone or tablet computer. In a specific application scenario, the display device can be an LCD television.
[0081] like Figure 1 As shown, the display device includes a display panel 10, which is configured to display an image.
[0082] The display panel 10 is provided with multiple liquid crystal units arranged in an array, and the light transmittance is controlled by each liquid crystal unit to achieve image display.
[0083] The display device also includes a backlight module 20, which is located on the light-incident side of the display panel 10 and is configured to provide a light source for the display panel 10. The backlight module 20 can emit light uniformly across the entire light-emitting surface, providing uniform light to the light-incident side of the display panel 10, so that the light transmitted through each liquid crystal cell forms a uniform display image.
[0084] like Figure 2 As shown, the backlight module 20 includes a first light-emitting area 200, which is the main area that provides backlight to the display panel 10.
[0085] The first light-emitting area 200 includes a plurality of first light-emitting devices 201. The plurality of first light-emitting devices 201 are arranged in an array along a first direction and a second direction that are perpendicular to each other, so that the light distribution of the backlight module 20 is uniform.
[0086] Please refer to Figures 2-3The first light-emitting device 201 includes at least a first packaging bracket 2011 and a first color light-emitting chip L1, a second color light-emitting chip L2, and a third color light-emitting chip L3 disposed within the first packaging bracket 2011.
[0087] The first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3 are arranged sequentially along the first direction. The mixed light emitted from the first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3 can be white light.
[0088] Among them, the first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3 can be light-emitting chips of the three primary colors: red, green, and blue. For example, in... Figure 2 In the illustrated embodiment, the first color light-emitting chip L1 is a blue light-emitting chip, the second color light-emitting chip L2 is a green light-emitting chip, and the third color light-emitting chip L3 is a red light-emitting chip. It is understood that in actual implementation, the three primary color light-emitting chips can also be arranged in other ways. For example, the first color light-emitting chip L1 could also be a red light-emitting chip, the second color light-emitting chip L2 a green light-emitting chip, and the third color light-emitting chip L3 a blue light-emitting chip.
[0089] Please refer to this again. Figures 2-3 The first light-emitting device 201 also includes a lens 2012, which is mounted on the first packaging bracket 2011 and located on the light-emitting side of the first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3.
[0090] Lens 2012 can increase the emission angle of each color light-emitting chip, thereby increasing the emission angle of the first light-emitting device 201. This allows the first light-emitting area 200, which provides backlight, to achieve the desired emission effect using a smaller number of first light-emitting devices 201. This reduces the number of first light-emitting devices 201 in the first light-emitting area 200, effectively lowering costs.
[0091] Please refer to Figure 3In the first packaging bracket 2011, the distance between the first color light-emitting chip L1 and the third color light-emitting chip L3 located on both sides and the first packaging bracket 2011 is small. This causes the light emitted by the first color light-emitting chip L1 and the third color light-emitting chip L3 to be blocked near the first packaging bracket 2011, thus affecting the light emission angle. In contrast, the light emitted by the second color light-emitting chip L2 located in the middle is not blocked by the packaging bracket 2011, and its light emission angle is larger. Therefore, the light emission angles of the three light-emitting chips in the LED bead are inconsistent. Without the lens 2012, the inconsistency in the light emission angles of the light-emitting chips is not obvious, and its impact on the final display effect of the display device can be ignored.
[0092] However, after setting the lens 2012, the lens 2012 amplifies the emission angle of each light-emitting chip, making the problem of inconsistent emission angles of the light-emitting chips in the first light-emitting device 201 more obvious. This causes the first light-emitting area 200 to exhibit edge color shift on both sides in the first direction when the backlight module provides white backlight. Specifically, in the edge region of the first light-emitting area in the first direction, the emission color of the color-emitting chip of the first light-emitting device 201 closer to the first side of the first packaging bracket 2011 is different from the emission color of the color-emitting chip farther away from the first packaging bracket 2011. Therefore, when the first light-emitting area provides white backlight, the edge regions on both sides exhibit color shift. For example, in Figure 2 In the embodiment shown, the left edge of the first light-emitting area 200 is reddish and the right edge is bluish.
[0093] In this embodiment, the backlight module 20 further includes a second light-emitting region. The second light-emitting region includes at least a sub-region disposed on one side of the first light-emitting region 200 in the first direction.
[0094] In some embodiments, such as Figure 4 As shown, the second light-emitting region includes a first sub-region 310, which is located on the first side of the first light-emitting region 200. The first side of the first light-emitting region 200 is the side of the first color light-emitting chip L1 in the first light-emitting device 201 that is away from the second color light-emitting chip L2.
[0095] In some embodiments, such as Figure 5 As shown, the second light-emitting region includes a second sub-region 320, which is located on the second side of the first light-emitting region 200. The second side of the first light-emitting region 200 is the side of the third color light-emitting chip L3 in the first light-emitting device 201 that is away from the second color light-emitting chip L2.
[0096] In some embodiments, such as Figure 6As shown, the second light-emitting region includes a first sub-region 310 and a second sub-region 320.
[0097] The second light-emitting area includes a plurality of second light-emitting devices 301 arranged at intervals. Each second light-emitting device 301 includes at least a second packaging bracket 3011 and a first color light-emitting chip L1, a second color light-emitting chip L2, and a third color light-emitting chip L3 disposed within the second packaging bracket 3011.
[0098] Since the second light-emitting device 301 does not have a lens, it does not suffer from inconsistent light emission angles among its individual light-emitting chips, resulting in uniform light emission. By setting a second light-emitting area at the edge of the first light-emitting area 200, the uniform light emitted by the second light-emitting device 301 supplements the edge area of the first light-emitting area 200. This improves the potential edge color shift issue in the first light-emitting area 200 when providing white backlight, making the overall white backlight provided by the backlight module 20 more uniform.
[0099] In both the first and second directions, the spacing between each of the first light-emitting devices 201 is a first spacing P1. This equidistant arrangement helps to ensure uniform distribution of light within the first light-emitting area 200.
[0100] The second spacing between each second light-emitting device is the second spacing P2, wherein the first spacing P1 is greater than or equal to the second spacing P2.
[0101] Since the second light-emitting device 301 does not have a lens, its light-emitting range is relatively smaller compared to the first light-emitting device 201. Therefore, by making the second spacing P2 between each second light-emitting device 301 less than or equal to the first spacing P1, the second light-emitting devices 301 can be arranged closely, thereby making the light distribution in the second light-emitting area uniform.
[0102] When uniform light from the second light-emitting area illuminates the left or right edge of the first light-emitting area 200, it can effectively cover the left or right edge of the first light-emitting area 200, thereby improving the color deviation problem of the left or right edge of the first light-emitting area 200.
[0103] In the aforementioned display device, the first light-emitting area 200 employs a first light-emitting device 201 covered with a lens 2012. The lens 2012 can increase the light-emitting angle of the light-emitting LED, allowing the first light-emitting area 200, which provides backlight light, to achieve the desired light-emitting effect using a smaller number of first light-emitting devices 201. By providing a second light-emitting device 301 without a lens in the second light-emitting area, the uniform light emitted by the second light-emitting device 301 can make the light at at least one peripheral position in the first light-emitting area 200 in the first direction more uniform, thereby improving the color shift problem during white light display. Thus, the light emission uniformity of the backlight module 20 can be improved, thereby improving the display uniformity of the display device and enhancing the picture quality.
[0104] It is understood that in actual implementation, the first light-emitting device 201 and the second light-emitting device 301 may include more light-emitting chips, such as three primary color light-emitting chips and a white light chip.
[0105] The type of each light-emitting chip can be selected according to specific circumstances. For example, each light-emitting chip can be an LED (Light Emitting Diode) chip. In other embodiments, each light-emitting chip can also be a QLED (Quantum Dot Light Emitting Diode) chip, etc.
[0106] In actual implementation, the backlight module 20 also includes a driving circuit, which is electrically connected to each of the first light-emitting devices 201 and the second light-emitting device 301, and is used to control the light-emitting state of each of the first light-emitting devices 201 and the second light-emitting device 301.
[0107] In specific control, the light emission state of each first light-emitting device 201 in the first light-emitting area 200 can be controlled by zone according to specific circumstances. The light emission state of each second light-emitting device 301 in the second light-emitting area can be controlled simultaneously, that is, when supplementary lighting is needed, each second light-emitting device 301 in the second light-emitting area will light up. This method of simultaneously controlling each second light-emitting device 301 can ensure the timeliness and effectiveness of supplementary lighting, and the control logic is simple.
[0108] In one embodiment, such as Figure 6 As shown, the second light-emitting region includes a first sub-region 310 and a second sub-region 320. The first sub-region 310 is located on the first side of the first light-emitting region 200, and the second sub-region 320 is located on the second side of the first light-emitting region 200. In the first sub-region 310 and the second sub-region 320, each second light-emitting device 301 is arranged along a second direction.
[0109] By arranging the second light-emitting devices 301 in the first sub-region 310 and the second sub-region 320 at equal intervals (second interval P2) along the second direction, the light distribution in the first sub-region 310 and the second sub-region 320 in the second direction can be made more uniform.
[0110] When the first sub-region 310 supplements the edge light emitted from the first side of the first light-emitting region 200, the uniform light distribution in the first sub-region 310 effectively covers and supplements the light at the first side edge, thus achieving a uniform supplementary lighting effect at the first side edge. Similarly, when the second sub-region 320 supplements the edge light emitted from the second side of the first light-emitting region 200, it also achieves a uniform supplementary lighting effect at the second side edge. Therefore, the edge color shift problem on both sides of the first light-emitting region 200 can be effectively improved, the uniformity of the backlight effect on both sides of the backlight module 20 can be enhanced, and the display quality of the display device can be improved.
[0111] The arrangement of the light-emitting chips in the second light-emitting device 301 needs to be set with reference to that of the first light-emitting device. In one embodiment, in the second light-emitting device 301 of the first sub-region 310, the light-emitting chips are arranged along a first direction, and one of the second color light-emitting chip L2 and the third color light-emitting chip L3 is located close to the first light-emitting region 200. This makes the first color light-emitting chip L1 located in the middle of the three light-emitting chips, or on the side of the second packaging bracket 3011 away from the first light-emitting region 200.
[0112] In the first light-emitting area 200, the first color light-emitting chip L1 in the first light-emitting device 201 near the first sub-area 310 has its light-emitting angle affected by the first packaging bracket 2011, causing the edge of the first light-emitting area 200 near the first sub-area 310 to be color-biased, and the color biased is the light-emitting color of the third color light-emitting chip L3.
[0113] In the second light-emitting device 301 of the first sub-region 310, the first color light-emitting chip L1 is located on the side away from the first light-emitting region 200. The light from L1 towards the first light-emitting region 200 is not affected by the second encapsulation bracket 3011, and the light is sufficient. Therefore, the first color light-emitting chip L1 in the second light-emitting device 301 can be used to supplement the light blocked by the first light-emitting device 201, thereby improving the color shift phenomenon of the first light-emitting region 200 near the first sub-region 310 and improving the consistency of the overall light-emitting effect.
[0114] In the second light-emitting device 301 of the first sub-region 310, the first color light-emitting chip L1 is located in the middle position, and its light emission angle is uniform. Therefore, the light emitted by the first color light-emitting chip L1 located in the middle position can be used to supplement the light of the first color light-emitting chip L1 that is blocked by the first packaging bracket 2011, thereby improving the color deviation phenomenon on the side of the first light-emitting region 200 near the first sub-region 310 and improving the consistency of the overall light emission effect.
[0115] In the second light-emitting device 301 of the second sub-region 320, each light-emitting chip is arranged along the first direction, and one of the first color light-emitting chip L1 and the second color light-emitting chip L2 is positioned close to the first light-emitting region 200. This results in the third color light-emitting chip L3 being located in the middle of the three light-emitting chips, or on the side of the second packaging bracket 3011 away from the first light-emitting region 200.
[0116] In the first light-emitting area 200, the third color light-emitting chip L3 in the first light-emitting device 201 near the second light-emitting device 301 has its light emission angle affected by the first packaging bracket 2011, causing the edge of the first light-emitting area 200 near the second sub-area 320 to be color-shifted, and the color shifted is the light emission color of the first color light-emitting chip L1.
[0117] In the second light-emitting device 301 of the second sub-region 320, the third-color light-emitting chip L3 is located on the side away from the first light-emitting region 200. The light emitted from L3 towards the first light-emitting region 200 is not affected by the second encapsulation bracket 3011, and the light is sufficient. Therefore, the light emitted by the third-color light-emitting chip L3 in the second light-emitting device 301 can be used to supplement the light emitted by the third-color light-emitting chip L3 in the first light-emitting device 201 that is blocked, thereby improving the color shift phenomenon on the side of the first light-emitting region 200 closer to the second sub-region 320 and improving the consistency of the overall light-emitting effect.
[0118] In the second light-emitting device 301 of the second sub-region 320, the third-color light-emitting chip L3 is located in the middle position, and its emission angle is uniform. Therefore, the light emitted by the third-color light-emitting chip L3 located in the middle position can be used to supplement the light of the third-color light-emitting chip L3 that is blocked by the first packaging bracket 2011, thereby improving the color shift phenomenon on the side of the first light-emitting region 200 near the second sub-region 320 and improving the consistency of the overall light emission effect.
[0119] In one embodiment, the arrangement of the color-emitting chips in each of the second light-emitting devices 301 is the same as that in the first light-emitting device 201. That is, in the second light-emitting device 301, the first color-emitting chip L1, the second color-emitting chip L2, and the third color-emitting chip L3 are arranged sequentially along the first direction.
[0120] In this embodiment, the light-emitting device 301 in the second light-emitting region has the same light-emitting chip arrangement as the first light-emitting device 201 in the first light-emitting region 200, so that the same light-emitting chip and packaging components can be used, thereby further reducing production costs.
[0121] In one embodiment, such as Figure 7 As shown, the second light-emitting region also includes a third sub-region 330 and a fourth sub-region 340. The third sub-region 330 is located on the third side of the first light-emitting region 200; the fourth sub-region 340 is located on the fourth side of the first light-emitting region 200; the third side and the fourth side are two opposite sides of the first light-emitting region 200 in the second direction.
[0122] In practical applications, after the first sub-region 310 and the second sub-region 320 provide supplementary light to the first light-emitting area on both sides in the first direction, the brightness of the first light-emitting area 200 on both sides in the second direction is often relatively low. This can easily cause dark areas to appear in the display device at these two edges, affecting the overall display effect.
[0123] In this embodiment, by setting the third sub-region 330 and the fourth sub-region 340, the brightness of the two edges of the first light-emitting region 200 can be effectively improved, thereby improving the overall display uniformity of the display device.
[0124] In the third sub-region 330 and the fourth sub-region 340, the second light-emitting devices 301 are arranged at equal intervals along the first direction with a second spacing P2, making the light in the third sub-region 330 and the fourth sub-region 340 more uniform in the first direction. Therefore, when supplementing the first light-emitting region 200, the two edges of the first light-emitting region 200 in the second direction can obtain uniform supplementary light. Furthermore, the supplementary light effect on the four peripheries of the first light-emitting region 200 is the same, resulting in high uniformity.
[0125] In actual implementation, the first sub-region 310, the second sub-region 320, the third sub-region 330 and the fourth sub-region 340 use the same second light-emitting device 301, thereby using the same light-emitting chip and packaging components, further reducing production costs.
[0126] In one embodiment, such as Figures 8-9 As shown, the backlight module 20 also includes a lamp board 21, which is configured to support the first light-emitting device 201 and the second light-emitting device 202. The light-emitting sides of the first light-emitting device 201 and the second light-emitting device 202 are disposed close to the display panel 10.
[0127] The backlight module 20 also includes an expansion plate 22, which is disposed between the lamp plate 21 and the display panel 10. The expansion plate 22 is used to diffuse and homogenize the light from the first light-emitting device 201 and the second light-emitting device 202, so that the light can be more evenly distributed on the entire display panel 10.
[0128] The distance between the expansion plate 22 and the lamp plate 21 is the reference distance H, and the second spacing P2 is greater than or equal to the reference distance H and less than or equal to a first preset multiple of the reference distance H.
[0129] The reference distance H does not need to be limited; those skilled in the art can set it according to specific circumstances. The first preset multiple can be determined in conjunction with the light-emitting characteristics of the second light-emitting device 301. For example, the first preset multiple is 1.2.
[0130] In this embodiment, by making the second spacing P2 satisfy H≤P2≤1.2H, on the one hand, the light from each of the second light-emitting devices 301 can be more concentrated; on the other hand, the light from each of the second light-emitting devices 301 can be more effectively diffused and mixed through the expansion plate 22 during transmission, thereby achieving a supplementary lighting effect.
[0131] In one embodiment, the distance between the second light-emitting device 301 and the first light-emitting device 201 is greater than or equal to the second spacing P2, and less than or equal to a second preset multiple of the reference distance H.
[0132] The second preset multiple is greater than the first preset multiple. For example, the second preset multiple is 1.25.
[0133] The distance between the first light-emitting device 201 located at the left edge of the first light-emitting region 200 and the adjacent second light-emitting device 301 in the first sub-region 310 in the first direction is the third distance. The distance between the first light-emitting device 201 located at the right edge of the first light-emitting region 200 and the adjacent second light-emitting device 301 in the second sub-region 320 in the first direction is the third distance. The distance between the first light-emitting device 201 located at the top edge of the first light-emitting region 200 and the adjacent second light-emitting device 301 in the third sub-region 330 in the second direction is the third distance. The distance between the first light-emitting device 201 located at the bottom edge of the first light-emitting region 200 and the adjacent second light-emitting device 301 in the fourth sub-region 340 in the second direction is the third distance.
[0134] The third spacing is between the second spacing P2 and the reference distance H, which is a second preset multiple. This allows the second light-emitting device 301 to provide sufficient supplementary light to the first light-emitting area 200, while ensuring that the second light-emitting device 301 is not too close to the first light-emitting area 200 to avoid light interference.
[0135] In one embodiment, the first spacing P1 is greater than the reference distance H and less than or equal to a third preset multiple of the reference distance H.
[0136] The third preset multiple is greater than the second preset multiple. For example, the third preset multiple is 1.5.
[0137] By making the first spacing P1 greater than or equal to the reference distance H, the light from the first light-emitting area 200 has sufficient space to diffuse and mix during transmission. By making the first spacing P1 less than or equal to a third preset multiple of the reference distance H, the light from the first light-emitting area 200 will not be lost excessively during transmission, and the light distribution will not be uneven due to excessive distance.
[0138] To better understand the above embodiments, the following detailed explanation is provided in conjunction with an optional embodiment. In one embodiment, as... Figure 8 As shown, the display device includes a display panel 10 and a backlight module 20. The backlight module 20 includes a lamp board 21 and an expansion plate 22. The lamp board 21 is used to support each of the first light-emitting devices 201 and the second light-emitting devices 202. The expansion plate 22 is disposed between the light-emitting side of the first light-emitting device 201 and the second light-emitting device 202 on the lamp board 21 and the display panel 10. The expansion plate 22 is used to diffuse and homogenize the light from the first light-emitting device 201 and the second light-emitting device 202, so that the light can be more evenly distributed on the entire display panel 10.
[0139] Please refer to Figure 7 The lamp panel is provided with a first light-emitting area 200 for providing uniform backlight to the display panel. In actual implementation, the first light-emitting area 200 may include at least one partition, which is the main area for providing backlight to the display panel 10 and accounts for a high proportion of the overall light-emitting area.
[0140] The first light-emitting region 200 includes a plurality of first light-emitting devices 201, which are arranged in an array along a first direction and a second direction that are perpendicular to each other.
[0141] The first light-emitting device 201 includes a first packaging bracket 2011, a first-color light-emitting chip L1, a second-color light-emitting chip L2, a third-color light-emitting chip L3, and a lens 2012. The first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3 are disposed within the first packaging bracket 2011. The lens 2012 is disposed on the first packaging bracket 2011 and is located on the light-emitting side of the first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3.
[0142] The light panel also includes a second light-emitting area for supplementing the peripheral edges of the first light-emitting area 200. The second light-emitting area includes a first sub-area 310, a second sub-area 320, a third sub-area 330, and a fourth sub-area 340, located on the first, second, third, and fourth sides of the first light-emitting area 200, respectively. This provides supplementary lighting around the perimeter of the first light-emitting area 200, improving display uniformity.
[0143] Specifically, the first sub-region 310, the second sub-region 320, the third sub-region 330 and the fourth sub-region 340 are each provided with a second light-emitting device 301. The second light-emitting devices 301 in the first sub-region 310 and the second sub-region 320 are arranged at equal intervals along the second direction, and the second light-emitting devices 301 in the third sub-region 330 and the fourth sub-region 340 are arranged at equal intervals along the first direction.
[0144] The second light-emitting device 301 includes a second packaging bracket 3011 and a first-color light-emitting chip L1, a second-color light-emitting chip L2, and a third-color light-emitting chip L3 disposed within the second packaging bracket 3011. The second light-emitting device 301 does not have a lens, therefore there is no problem of inconsistent light emission angles among the light-emitting chips, and the light emitted by the second light-emitting device 301 is uniform. By setting a second light-emitting area around the first light-emitting area 200, and using the uniform light emitted by the second light-emitting device 301 to supplement the edge area of the first light-emitting area 200, the potential edge color shift problem of the first light-emitting area 200 can be improved, thereby enhancing the overall display uniformity of the backlight module 20.
[0145] Because the second light-emitting device 301 and the first light-emitting device 201 have different emission angles, each spacing needs to be set individually. Specifically, the distance between the lamp board 21 and the expansion board 22 is the reference distance H; the first spacing P1 between the first light-emitting devices 201 is H ≤ P1 ≤ 1.5H; the second spacing P2 between the second light-emitting devices 301 is H ≤ P2 ≤ 1.2H; and the spacing P3 between the second light-emitting device 301 and the adjacent first light-emitting device 201 is P2 ≤ P3 ≤ 1.25H.
[0146] The aforementioned display device, by providing a second light-emitting device 301 without a lens in the second light-emitting area, can utilize the uniform light emitted by the second light-emitting device 301 to make the light in the peripheral positions of the first light-emitting area 200 more uniform, thereby improving the color deviation problem in white light display. This improves the light emission uniformity of the backlight module 20, and consequently enhances the display uniformity of the display device, thus improving image quality.
[0147] In one embodiment, a display device is provided; please refer again... Figure 1The display device includes a display panel 10, which is configured to display images. The display panel 10 has a plurality of liquid crystal cells arranged in an array, and the image is displayed by controlling the light transmittance of each liquid crystal cell.
[0148] The display device also includes a backlight module 20, which is located on the light-incident side of the display panel 10 and is configured to provide a light source for the display panel 10. The backlight module 20 can emit light uniformly across the entire light-emitting surface, providing uniform light to the light-incident side of the display panel 10, so that the light transmitted through each liquid crystal cell forms a uniform display image.
[0149] like Figure 10 As shown, the backlight module 20 includes a first light-emitting area 310, a second light-emitting area 200, a third light-emitting area 320 arranged along a first direction, and light-emitting devices disposed in each light-emitting area.
[0150] The second light-emitting area 200 is the main area that provides backlight to the display panel 10. The second light-emitting area 200 includes a plurality of light-emitting devices 201, which are arranged in an array along a first direction and a second direction that are perpendicular to each other, so that the light distribution of the backlight module 20 is uniform.
[0151] The light-emitting device 201 in the second light-emitting region 200 includes at least a packaging bracket 2011 and a first-color light-emitting chip L1, a second-color light-emitting chip L2, and a third-color light-emitting chip L3 disposed within the packaging bracket 2011. The first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3 are arranged sequentially along a first direction. The emitted light from the first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3 is mixed to produce white light.
[0152] In this design, the first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3 can be primary color light-emitting chips of red, green, and blue, respectively. For example, the first color light-emitting chip L1 can be a blue light-emitting chip, the second color light-emitting chip L2 a green light-emitting chip, and the third color light-emitting chip L3 a red light-emitting chip. It is understood that in actual implementation, the three primary color light-emitting chips can also be arranged in other ways; for example, the first color light-emitting chip L1 could also be a red light-emitting chip, the second color light-emitting chip L2 a green light-emitting chip, and the third color light-emitting chip L3 a blue light-emitting chip.
[0153] The light-emitting device 201 in the second light-emitting region 200 also includes a lens 2012. The lens 2012 is mounted on the packaging bracket 2011 and is located on the light-emitting side of the first color light-emitting chip L1, the second color light-emitting chip L2, and the third color light-emitting chip L3. The lens 2012 can increase the emission angle of each light-emitting chip, thereby enabling the second light-emitting region 200 to achieve the desired light-emitting effect with a smaller number of light-emitting devices 201. This reduces the number of light-emitting devices 201 in the second light-emitting region 200, effectively lowering costs.
[0154] In the packaging bracket 2011, the distance between the first-color light-emitting chip L1 and the third-color light-emitting chip L3 located on both sides and the packaging bracket 2011 is small. This causes the light emitted by the first-color light-emitting chip L1 and the third-color light-emitting chip L3 to be partially blocked near the packaging bracket 2011, thus affecting the light emission angle. In contrast, the light emitted by the second-color light-emitting chip L2 located in the middle is not blocked, and its light emission angle is larger. Therefore, the light emission angles of the three light-emitting chips in the LED are inconsistent. Without the lens 2012, the inconsistency in the light emission angles of the chips is not significant, and its impact on the final display effect of the display device can be ignored.
[0155] However, after setting the lens 2012, the lens 2012 amplifies the emission angle of each light-emitting chip, making the problem of inconsistent emission angles of the light-emitting chips in the light-emitting device 201 more obvious. This results in edge color shift on both sides of the first light-emitting area 200 in the first direction when displaying white light. For example, as Figure 10 In the embodiment shown, the left edge of the first light-emitting area 200 is reddish and the right edge is bluish.
[0156] In this embodiment, a first light-emitting area 310 and a third light-emitting area 320 are respectively provided on both sides of the second light-emitting area 200 in the first direction, so as to supplement the light on both sides of the second light-emitting area 200 in the first direction and improve the edge color deviation problem on both sides.
[0157] The light-emitting device 301 in the first light-emitting area 310 includes at least a first color light-emitting chip L1. Thus, the first light-emitting area 310 can emit light of the first color to supplement the light of the first color light-emitting chip L1 in the light-emitting lamp beads at the edge of the second light-emitting area 200, which is blocked by the encapsulation bracket, thereby balancing the color shift phenomenon at the left edge of the second light-emitting area 200 when displaying white light.
[0158] The light-emitting device 302 in the third light-emitting area 320 includes at least a third-color light-emitting chip L3. Thus, the third-color light emitted by the third light-emitting area 320 can supplement the light of the third-color light-emitting chip L3 in the light-emitting lamp beads at the edge of the second light-emitting area 200, which is blocked by the encapsulation bracket, thereby balancing the color shift phenomenon at the right edge of the second light-emitting area 200 when displaying white light.
[0159] In the aforementioned display device, the second light-emitting area 200 employs a light-emitting device covered with a lens 2012. The lens 2012 can increase the light-emitting angle of the LED beads, allowing the second light-emitting area 200 to achieve the desired light-emitting effect with a smaller number of light-emitting devices 201. By setting a light-emitting device 301 including a first-color light-emitting chip L1 in the first light-emitting area 310, the first-color light emitted by the first light-emitting area 310 can supplement the edge position of the second light-emitting area 200 near the first light-emitting area 310 with first-color light. By setting a light-emitting device 302 including a third-color light-emitting chip L3 in the third light-emitting area 320, the third-color light emitted by the third light-emitting area 320 can supplement the edge position of the second light-emitting area 200 near the third light-emitting area 320 with third-color light. Therefore, the light color on both sides of the edge of the second light-emitting area 200 can be made more uniform, effectively improving the color shift problem in white light display. This improves the light emission uniformity of the backlight module 20, thereby improving the display uniformity of the display device and enhancing the picture quality.
[0160] It is understandable that the light-emitting devices in each light-emitting area can include more light-emitting chips, such as three primary color light-emitting chips and a white light chip.
[0161] The type of each light-emitting chip can be selected according to specific circumstances. For example, each light-emitting chip can be an LED (Light Emitting Diode) chip. In other embodiments, each light-emitting chip can also be a QLED (Quantum Dot Light Emitting Diode) chip, etc.
[0162] In actual implementation, the backlight module 20 also includes a driving circuit, which is electrically connected to the light-emitting devices in each light-emitting area and is used to control the light-emitting state of the light-emitting devices.
[0163] In specific control, the luminous state of each luminous device 201 in the second luminous region 200 can be controlled in zones according to specific circumstances. The luminous states of the luminous devices in the first luminous region 310 and the third luminous region 320 can be controlled simultaneously; that is, when supplementary lighting is needed, both luminous devices in the first luminous region 310 and the third luminous region 320 will be lit. This method of simultaneously controlling the luminous devices in the first luminous region 310 and the third luminous region 320 ensures the timeliness and effectiveness of supplementary lighting, and the control logic is simple.
[0164] The light-emitting device 301 in the first light-emitting region 310 may also include a packaging bracket 3011, with the first color light-emitting chip L1 disposed within the packaging bracket 3011. Similarly, the light-emitting device 302 in the third light-emitting region 320 may include a packaging bracket 3021, with the third color light-emitting chip L3 disposed within the packaging bracket 3021. The packaging bracket 3011, packaging bracket 3021, and the packaging space 2011 can all utilize the same process to save costs.
[0165] In one embodiment, the light-emitting device 301 in the first light-emitting region 310 further includes a lens 3012 located on the light-emitting side of the first color light-emitting chip L1. The light-emitting device 302 in the third light-emitting region 320 further includes a lens 3022 located on the light-emitting side of the third color light-emitting chip L3.
[0166] After setting lenses 3012 and 3022, the light emission angles of light-emitting devices 301 and 302 are increased. Therefore, the spacing between each light-emitting device in the first light-emitting region 310, the second light-emitting region 200, and the third light-emitting region 320 can be made equal, for example, all of them are P, so that the light-emitting devices in the entire light-emitting region are evenly arranged, thereby improving the light emission uniformity of the entire light-emitting region.
[0167] In one embodiment, such as Figure 11 As shown, the spacing between each light-emitting device 201 in the second light-emitting region 200 is the first spacing, the spacing between each light-emitting device 301 in the first light-emitting region 310 is the second spacing, and the spacing between each light-emitting device 302 in the third light-emitting region 320 is the third spacing. The first spacing is greater than the second spacing, and the third spacing is greater than the third spacing. The second spacing and the third spacing can be equal.
[0168] In this embodiment, neither the light-emitting device 301 in the first light-emitting region 310 nor the light-emitting device 302 in the third light-emitting region 320 is equipped with a lens, resulting in a small light emission angle. Therefore, by making the second and third spacings smaller than the first spacing, that is, by arranging the light-emitting devices 301 in the first light-emitting region 310 and 302 in the third light-emitting region 320 more densely, the light distribution in the first and third light-emitting regions 310 and 320 becomes more uniform. Consequently, when the first and third light-emitting regions 310 and 320 provide supplementary lighting to both sides of the second light-emitting region 200, the supplementary lighting effect is more uniform and reliable.
[0169] To better understand the above embodiments, the following detailed explanation is provided in conjunction with an optional embodiment. In one embodiment, as... Figure 1 As shown, the display device includes a display panel 10 and a backlight module 20. The display panel 10 is provided with a plurality of liquid crystal cells arranged in an array. The backlight module 20 is located on the light-incident side of the display panel 10. The backlight module 20 can emit light uniformly throughout the entire light-emitting surface, providing uniform light to the light-incident side of the display panel 10, so that the light transmitted by each liquid crystal cell forms a uniform display image.
[0170] Please refer to Figure 10 The backlight module includes a second light-emitting area 200. In actual implementation, the second light-emitting area 200 may include at least one partition, which is the main area for providing backlight to the display panel 10 and accounts for a high proportion of the overall light-emitting area.
[0171] The second light-emitting area 200 includes a plurality of light-emitting devices 201, which are arranged in an array along a first direction and a second direction that are perpendicular to each other. The arrayed light-emitting devices 201 are used to emit uniform light to provide uniform backlight for the display panel.
[0172] The light-emitting device 201 in the second light-emitting region 200 includes a packaging bracket 2011, a lens 2012, and a first-color light-emitting chip L1, a second-color light-emitting chip L2, and a third-color light-emitting chip L3 disposed within the packaging bracket 2011. The first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3 are arranged sequentially along a first direction. The lens 2012 is mounted on the packaging bracket 2011 and is located on the light-emitting side of the first-color light-emitting chip L1, the second-color light-emitting chip L2, and the third-color light-emitting chip L3.
[0173] The backlight module also includes a first light-emitting area 310 and a third light-emitting area 320 for supplementing the left and right edges of the second light-emitting area 200. The first light-emitting area 310 and the third light-emitting area 320 are located on the left and right sides of the second light-emitting area 200, respectively, to supplement the left and right sides of the second light-emitting area 200 and improve the uniformity of the display.
[0174] The first light-emitting area 310 includes multiple light-emitting devices 301. Each light-emitting device 301 includes a packaging bracket 3011, a lens 3012, and a first-color light-emitting chip L1 disposed within the packaging bracket 3011. The multiple light-emitting devices 301 are arranged at equal intervals along a second direction so that the first light-emitting area 310 can emit uniform light of the first color to supplement the left edge of the second light-emitting area 200, improve the color shift problem that may occur on the left edge of the second light-emitting area 200, and thus improve the overall display uniformity of the backlight module.
[0175] The third light-emitting area 320 contains multiple light-emitting devices 302, each including a packaging bracket 3021, a lens 3022, and a third-color light-emitting chip L3 disposed within the packaging bracket 3021. The multiple light-emitting devices 302 are arranged at equal intervals along the second direction so that the third light-emitting area 320 can emit uniform third-color light, providing supplementary lighting to the right edge of the second light-emitting area 200, improving the potential color shift problem at the right edge of the second light-emitting area 200, and thus enhancing the overall display uniformity of the backlight module.
[0176] The aforementioned display device, by providing a light-emitting device 301 including a first-color light-emitting chip L1 in the first light-emitting area 310, allows the light of the first color emitted by the first light-emitting area 310 to supplement the edge position of the second light-emitting area 200 near the first light-emitting area 310 with the first-color light. By providing a light-emitting device 302 including a third-color light-emitting chip L3 in the third light-emitting area 320, the light of the third color emitted by the third light-emitting area 320 can supplement the edge position of the second light-emitting area 200 near the third light-emitting area 320 with the third-color light. This makes the light color more uniform on both sides of the edge of the second light-emitting area 200, effectively improving the color shift problem in white light display. Therefore, the light emission uniformity of the backlight module 20 can be improved, thereby improving the display uniformity of the display device and enhancing the picture quality.
[0177] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.
[0178] 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 specification.
[0179] 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 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 modifications and improvements 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 in that, include: The display panel is configured to display images; A backlight module, located on the light-incident side of the display panel, is configured to provide a light source for the display panel; The backlight module includes: The first light-emitting region includes multiple first light-emitting devices arranged in an array; The second light-emitting region includes at least a sub-region disposed on one side of the first light-emitting region in a first direction; the second light-emitting region includes a plurality of second light-emitting devices arranged at intervals; the first spacing between each of the first light-emitting devices is greater than or equal to the second spacing between each of the second light-emitting devices; wherein... The first light-emitting device includes: First packaging bracket; A first-color light-emitting chip, a second-color light-emitting chip, and a third-color light-emitting chip are arranged sequentially along the first direction and disposed within the first packaging bracket; the emitted light from the first-color light-emitting chip, the second-color light-emitting chip, and the third-color light-emitting chip is mixed to produce white light; A lens, which is mounted on the first packaging bracket and located on the light-emitting side of the first color light-emitting chip, the second color light-emitting chip and the third color light-emitting chip; The second light-emitting device includes at least: Second packaging bracket; A first color light-emitting chip, a second color light-emitting chip, and a second color light-emitting chip are disposed within the second packaging bracket.
2. The display device according to claim 1, characterized in that, The second luminescent region includes: The first sub-region is located on the first side of the first light-emitting region; the first side of the first light-emitting region is the side of the first color light-emitting chip in the first light-emitting device that is away from the second color light-emitting chip. The second sub-region is located on the second side of the first light-emitting region; the second side of the first light-emitting region is the side of the third color light-emitting chip in the first light-emitting device that is away from the second color light-emitting chip. In the first sub-region and the second sub-region, each of the second light-emitting devices is arranged along a second direction, which is perpendicular to the first direction.
3. The display device according to claim 2, characterized in that, In the second light-emitting device of the first sub-region, each light-emitting chip is arranged along the first direction, and one of the second color light-emitting chip and the third color light-emitting chip is disposed close to the first light-emitting region; In the second light-emitting device of the second sub-region, each light-emitting chip is arranged along the first direction, and one of the first color light-emitting chip and the second color light-emitting chip is disposed close to the first light-emitting region.
4. The display device according to claim 2, characterized in that, The second light-emitting region also includes: The third sub-region is located on the third side of the first light-emitting region; The fourth sub-region is located on the fourth side of the first light-emitting region; the third side and the fourth side are the two opposite sides of the first light-emitting region in the second direction; In the third and fourth sub-regions, each of the second light-emitting devices is arranged along the first direction.
5. The display device according to claim 1, characterized in that, The backlight module also includes: The light panel is configured to support each of the first light-emitting device and the second light-emitting device; An expansion plate is disposed between the lamp plate and the display panel; Wherein, the second spacing is greater than or equal to the reference distance and less than or equal to a first preset multiple of the reference distance; wherein, the reference distance is the distance between the expansion plate and the lamp plate.
6. The display device according to claim 5, characterized in that, The distance between the second light-emitting device and the first light-emitting device is greater than or equal to the second spacing and less than or equal to a second preset multiple of the reference distance; wherein the second preset multiple is greater than the first preset multiple.
7. The display device according to claim 6, characterized in that, The first spacing is greater than or equal to the reference distance and less than or equal to a third preset multiple of the reference distance; wherein the third preset multiple is greater than the second preset multiple.
8. A display device, characterized in that, include: The display panel is configured to display images; A backlight module, located on the light-incident side of the display panel, is configured to provide a light source for the display panel; The backlight module includes: A first light-emitting region, a second light-emitting region, a third light-emitting region arranged along a first direction, and light-emitting devices disposed in each light-emitting region; in, The light-emitting device in the second light-emitting region includes: Packaging bracket; A first-color light-emitting chip, a second-color light-emitting chip, and a third-color light-emitting chip are arranged along a first direction; disposed within the packaging bracket; the emitted light from the first-color light-emitting chip, the second-color light-emitting chip, and the third-color light-emitting chip is mixed to produce white light; A lens, which is mounted on the packaging bracket and located on the light-emitting side of the first color light-emitting chip, the second color light-emitting chip and the third color light-emitting chip; The light-emitting device in the first light-emitting region includes at least a first color light-emitting chip; The light-emitting devices in the third light-emitting region include at least a third color light-emitting chip.
9. The display device according to claim 8, characterized in that, The light-emitting device in the first light-emitting area also includes a lens located on the light-emitting side of the first color light-emitting chip; The light-emitting device in the third light-emitting region also includes a lens located on the light-emitting side of the third color light-emitting chip; The spacing between each light-emitting device in the first light-emitting region, the second light-emitting region, and the third light-emitting region is equal.
10. The display device according to claim 8, characterized in that, The first spacing between each light-emitting device in the second light-emitting region is greater than or equal to the second spacing between each light-emitting device in the first light-emitting region; the third spacing between each light-emitting device in the third light-emitting region is less than the first spacing.