Backlight structure and display device

Abstract

The invention discloses a backlight structure and a display device.The backlight structure comprises a driving substrate and light emitting units arranged on the driving substrate in an array mode, the driving substrate is provided with a plurality of multi-lamp-number lamp areas and a plurality of small-lamp-number lamp areas, and the multi-lamp-number lamp areas comprise lamp areas with the lamp number larger than or equal to 4; the small-lamp-number lamp area comprises lamp areas with the lamp number smaller than or equal to 3 and larger than or equal to 1. The multi-lamp-number lamp areas are arranged at intervals, and the small-lamp-number lamp areas are arranged between the adjacent multi-lamp-number lamp areas. The light-emitting units with the corresponding lamp numbers are arranged in the multiple-lamp-number lamp areas and the multiple-lamp-number lamp areas respectively. According to the backlight structure, halo can be obviously improved, a better display effect is presented, and better image quality is provided.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a backlight structure and a display device. Background Art

[0002] The MLED backlight products on the market are mainly designed with four lights in one zone or nine lights in one zone. Even if the conventional one-zone four-light design has fewer lights in a single zone, there will still be halos. There are many ways to improve the halo, such as optimizing the algorithm, adding dam glue around the light zone to block the mixed light between the light zones, etc., but each improvement method has certain limitations. Taking the one-zone four-light design product as an example, the light zones of one zone four lights are arranged in a rectangular combination of four lamp beads, and the two adjacent light zones are one zone four lights. The four LED lamp beads in each zone are driven synchronously. When displaying the picture, the local backlight adjustment (LocalDimming) algorithm will control the brightness of the corresponding backlight area according to the brightness of the image in the display area. However, when the edge of the displayed image corresponds to a small area of ​​the light zone, it is necessary to light up the four lights in the entire area. Such a display effect will have a strong halo. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the related art, the purpose of the present application is to provide a backlight structure and a display device, which can significantly improve the halo, present a better display effect, and provide better picture quality.

[0004] The present application also provides a backlight structure, including a driving substrate and light-emitting units arranged in an array on the driving substrate, the driving substrate being provided with a plurality of light areas with a large number of lights and a plurality of light areas with a small number of lights, the light areas with a large number of lights including light areas with a number of lights greater than or equal to 4; the light areas with a small number of lights including light areas with a number of lights less than or equal to 3 and greater than or equal to 1; the light areas with a large number of lights are arranged at intervals, and the light areas with a small number of lights are arranged between adjacent light areas with a large number of lights; the light-emitting units with a corresponding number of lights are respectively arranged in each light area with a large number of lights and each light area with a small number of lights.

[0005] By setting up a light zone with fewer lights around a light zone with more lights, and reasonably configuring the number of lights and arrangement direction in the light zone, the light zone with fewer lights can be used to optimize the subtleties of the display, significantly improve the halo, present a better display effect, and provide better picture quality. The light zone with fewer lights acts as a transition zone. When the edge of the displayed image is in the light zone with fewer lights, it is only necessary to control the brightness of the LEDs in the light zone with fewer lights to meet the requirements of the image edge display, avoiding the original design of the light zone with more lights, which requires more LEDs to be lit, resulting in severe halo at the edge of the displayed image.

[0006] Optionally, the light area with a large number of lights is a light area with a same number of lights, and the light area with a small number of lights includes light areas with a plurality of different numbers of lights.

[0007] By arranging high-number-of-lights zones with the same number of lights and low-number-of-lights zones with different numbers of lights, the design is simplified and the design cost is saved while improving the halo and achieving a better display.

[0008] Optionally, the light area with more lights includes one of a four-light light area, a five-light light area, a six-light light area, a seven-light light area, an eight-light light area and a nine-light light area; the light area with fewer lights includes at least two of a three-light light area, a two-light light area and a one-light light area.

[0009] Optionally, the light area with more lights is a four-light area, the four-light area is a 2*2 array, and the light area with fewer lights includes a two-light area and a one-light area; two-light areas are arranged between adjacent light areas with more lights, and one-light area is arranged between adjacent light areas with fewer lights.

[0010] By combining a four-lamp zone with a two-lamp zone and a one-lamp zone, the halo of four lights in one zone can be improved and a better display effect can be achieved without increasing the design cost.

[0011] Optionally, a two-lamp light area is set between adjacent multiple-lamp light areas, the two-lamp light areas set between adjacent multiple-lamp light areas in the row direction are a 2*1 array, and the two-lamp light areas set between adjacent multiple-lamp light areas in the column direction are a 1*2 array.

[0012] The one-zone two-lamp light zone placed between two one-zone four-lamp lights acts as a transition zone. When the edge of the displayed image is in the middle of two one-zone four-lamp lights, it is only necessary to control the LED brightness of the one-zone two-lamp lights to meet the image edge display requirements, avoiding the original one-zone four-lamp design that requires four LEDs to be lit, resulting in severe halo at the edge of the displayed image; the one-zone one-lamp design can be combined with one-zone four-lamp and one-zone two-lamp lights to optimize the subtleties of the display. By reasonably configuring the number and arrangement direction of the two-lamp light zones, the halo of the one-zone four-lamp lights can be further improved, a better display effect can be achieved, and the design cost can be reduced.

[0013] Optionally, the light area with a large number of lights is a four-light light area, the four-light light area is a 2*2 array, and the light area with a small number of lights includes a two-light light area and a three-light light area; a two-light light area is set between adjacent light areas with a large number of lights, and a three-light light area is set between adjacent light areas with a small number of lights.

[0014] By rationally configuring the number and arrangement direction of two-lamp zones, the halo of four lamps in one zone can be further improved, better display effects can be achieved, and design costs can be reduced.

[0015] Optionally, the light area with a large number of lights includes light areas with a plurality of different numbers of lights, and the light area with a small number of lights includes light areas with a plurality of different numbers of lights.

[0016] Optionally, the light area with more lights includes at least two of four-light light areas, five-light light areas, six-light light areas, seven-light light areas, eight-light light areas and nine-light light areas; the light area with fewer lights includes at least two of three-light light areas, two-light light areas and one-light light area.

[0017] Optionally, the light area with more lights includes a four-light area and a six-light area, the four-light area is a 2*2 array, the six-light area is 3*2, and the light area with fewer lights includes at least two of a three-light area, a two-light area and a one-light area.

[0018] The present application also provides a display device, comprising the backlight structure.

[0019] By setting a light zone with fewer lights around a light zone with more lights, the halo can be significantly improved, resulting in better display effects and better picture quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a backlight structure provided in one embodiment of the present application; Figure 2 A schematic diagram of a backlight structure provided in another embodiment of the present application; Figure 3 A schematic diagram showing a comparison between the embodiment of the present application in a display state of one zone two lights and one zone four lights and the related art; Figure 4 A schematic diagram showing a comparison between the embodiment of the present application in a display state of one light and one zone with two lights in one zone and the related art; Figure 5 This is a schematic diagram comparing the one-zone-one-light display state of the embodiment of the present application with the related art.

[0021] Description of reference numerals: 1-most-lamp area, 11-four-lamp area, 12-six-lamp area, 2-few-lamp area, 21-two-lamp area, 22-one-lamp area, 23-three-lamp area, A-halo, 3-driving substrate. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] In the description of the present application, the terms "first", "second", etc. are used to distinguish different objects rather than to describe a specific order. In addition, the terms "upper", "lower", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0025] It should be noted that the illustrations provided in the embodiments of the present application are only used to illustrate the basic concept of the present application in a schematic manner. The illustrations only show the components related to the present application rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0026] The specific implementation of the present application is further described below in conjunction with the accompanying drawings.

[0027] See also Figure 1 and Figure 2 As shown, this embodiment discloses a backlight structure, including a driving substrate 3 and light-emitting units arranged in an array on the driving substrate 3, wherein the driving substrate 3 is provided with a plurality of light areas 1 with a large number of lights and a plurality of light areas 2 with a small number of lights, wherein the light area 1 with a large number of lights includes a light area with a number of lights greater than or equal to 4; the light area 2 with a small number of lights includes a light area with a number of lights less than or equal to 3 and greater than or equal to 1; the light areas 1 with a large number of lights are arranged at intervals, and the light areas 2 with a small number of lights are arranged between adjacent light areas 1 with a large number of lights; and the light-emitting units with a corresponding number of lights are arranged in each light area 1 with a large number of lights and each light area with a small number of lights 2. By arranging the light area 2 with a small number of lights around the light area 1 with a large number of lights and rationally configuring the number of lights and arrangement direction of the light areas, the light area 2 with a small number of lights can be used to optimize the subtleties of the display, significantly improve the halo, present a better display effect, and provide a better picture quality. The light zone 2 with fewer lights acts as a transition zone. When the edge of the displayed image is in the light zone 2 with fewer lights, it is only necessary to control the brightness of the LEDs in the light zone 2 with fewer lights to meet the image edge display requirements, avoiding the original design of the light zone 1 with more lights, which requires more LEDs to light up, resulting in severe halo at the edge of the displayed image. The number of lights refers to the number of light-emitting units.

[0028] In this embodiment, the driving substrate 3 can be a circuit board, an array substrate, a glass driving substrate, a flexible driving substrate, a light board, a semiconductor driving substrate or other types of driving substrates, which are not specifically limited in this embodiment; the material of the driving substrate 3 can be glass, transparent plastic, acrylic, quartz, sapphire, semiconductor material, etc., which can be selected according to actual conditions, and is not specifically limited in this embodiment.

[0029] In this embodiment, the light-emitting unit may be a MiniLED or a MicroLED or a nano-scale LED or an LED of other sizes, which is not limited here and can be selected according to actual conditions.

[0030] In this embodiment, the lamp area 1 with multiple lamps includes a lamp area with a lamp number greater than or equal to 4 and less than or equal to 9. In other embodiments, the lamp area 1 with multiple lamps includes a lamp area with a lamp number greater than or equal to 4 and less than or equal to 10 or 12 or 14 or 16 or 20 or 30 or more lamps, which is not limited here and can be selected according to actual conditions.

[0031] See also Figure 1 As shown, the high-number-of-lights light zone 1 is a high-number-of-lights light zone 1 with the same number of lights, and the low-number-of-lights light zone 2 includes a plurality of low-number-of-lights light zones 2 with different numbers of lights. By arranging the high-number-of-lights light zone 1 with the same number of lights and the low-number-of-lights light zone 2 with different numbers of lights, the design is simplified and the design cost is saved while improving the halo and achieving a better display.

[0032] In this embodiment, the light area 1 with more lights includes one of the light areas with four lights 11, five lights, six lights 12, seven lights, eight lights and nine lights; the light area 2 with fewer lights includes at least two of the light areas with three lights 23, two lights 21 and one lights 22.

[0033] In this embodiment, the light area 1 with many lights is a light area with four lights 11, which is a 2*2 array, and the light area 2 with few lights includes a light area with two lights 21 and a light area with one light 22; two light areas 21 are arranged between adjacent light areas with many lights 1, and one light area 22 is arranged between adjacent light areas with few lights 2. By matching the light area 11 with four lights, the light area with two lights 21 and the light area with one light 22 can improve the halo of four lights in one area and achieve a better display effect, and the design cost will not increase.

[0034] In this embodiment, a two-lamp light zone 21 is arranged between adjacent multi-lamp light zones 1. The two-lamp light zones 21 arranged between adjacent multi-lamp light zones 1 in the row direction are 2*1 arrays, and the two-lamp light zones 21 arranged between adjacent multi-lamp light zones 1 in the column direction are 1*2 arrays. By reasonably configuring the number and arrangement direction of the two-lamp light zones 21, the halo of the one-zone four-lamp light zone is further improved and a better display effect is achieved, as well as the design cost is reduced. The one-zone two-lamp light zone placed between two one-zone four-lamp light zones acts as a transition zone. When the edge of the displayed image is in the middle of the two one-zone four-lamp light zones, it is only necessary to control the brightness of the LEDs of the one-zone two-lamp light zone to meet the image edge display requirements, avoiding the original one-zone four-lamp design that needs to control four LEDs to light up, resulting in a serious halo at the edge of the displayed image; the one-zone one-lamp design can be combined with the one-zone four-lamp and one-zone two-lamp light zones to optimize the subtleties of the display.

[0035] See also Figure 3 As shown, Figure 3 It is a schematic diagram comparing the display state of one zone two lights with one zone four lights and the related technology; the left picture is the one zone four lights design of the related technology, and the right picture is the optimized design of one zone four lights with one zone two lights and one zone one light. When an image spanning two light zones is displayed at the same time, the halo A presented by the backlight of the one zone four lights design of the related technology is six times more serious than the backlight after the optimized design. It can be seen that the combination of one zone two lights and one zone four lights has a great improvement effect on the halo A.

[0036] See also Figure 4 As shown, Figure 4 It is a schematic diagram comparing the display state of one lamp and one zone with one zone two lamps in the embodiment of the present application with the related art; the left picture is the one-zone four-lamp design of the related art, and the right picture is the optimized design of one-zone four lamps with one-zone two lamps and one-zone one lamp. The halo A presented by the backlight of the one-zone four-lamp design of the related art is about 2.3 times more severe than the backlight after the optimized design. It can be seen that the combination design of one-zone one lamp with one-zone two lamps has obvious improvement on the halo A.

[0037] See also Figure 5 As shown, Figure 5 This is a schematic diagram comparing the one-zone-one-lamp display state of the embodiment of the present application with the related art. The left picture shows the one-zone-four-lamp design of the related art, and the right picture shows the optimized design of one-zone-four-lamp with one-zone-two-lamp and one-zone-one-lamp. The halo A presented by the backlight of the one-zone-four-lamp design of the related art is about 3 times more severe than the backlight after the optimized design. It can be seen that the one-zone-one-lamp design can optimize the display details and present a better display effect.

[0038] In this embodiment, the light area 1 with many lights is a light area with four lights 11, which is a 2*2 array, and the light area 2 with few lights includes a light area with two lights 21 and a light area with three lights 23; the light area with two lights 21 is arranged between adjacent light areas with many lights 1, and the light area with three lights 23 is arranged between adjacent light areas with few lights 2. By reasonably configuring the number and arrangement direction of the light areas with two lights 21, the halo of four lights in one area can be further improved, a better display effect can be achieved, and the design cost can be reduced.

[0039] See also Figure 2 As shown, the high-lamp-count light zone 1 includes a plurality of high-lamp-count light zones 1 with different numbers of lamps, and the low-lamp-count light zone 2 includes a plurality of low-lamp-count light zones 2 with different numbers of lamps.

[0040] In this embodiment, the light zone 1 with many lights includes at least two of the light zones with four lights 11, five lights, six lights 12, seven lights, eight lights and nine lights; the light zone 2 with few lights includes at least two of the light zones with three lights 23, two lights 21 and one lights 22.

[0041] In this embodiment, the light area 1 with more lights includes a light area with four lights 11 and a light area with six lights 12, the light area with four lights 11 is a 2*2 array, the light area with six lights 12 is a 3*2 array, and the light area 2 with fewer lights includes at least two of the light area with three lights 23, the light area with two lights 21 and the light area with one light 22.

[0042] The present application also provides a display device, including the above-mentioned backlight structure. By arranging a light area 2 with fewer lights around a light area 1 with more lights, the display device can significantly improve halo, present a better display effect, and provide better picture quality.

[0043] In this embodiment, the light-emitting side of the backlight structure further includes an optical film material.

[0044] In this embodiment, the display device further includes a liquid crystal display panel, and the liquid crystal display panel is arranged on the light exiting side of the backlight structure.

[0045] The backlight structure and display device of the present application, by setting a light zone with fewer lights around a light zone with more lights, and rationally configuring the number of lights and arrangement direction in the light zone, the light zone with fewer lights can be used to optimize the subtleties of the display, significantly improve the halo, present a better display effect, and provide better image quality. The light zone with fewer lights acts as a transition zone. When the edge of the displayed image is in the light zone with fewer lights, it is only necessary to control the brightness of the LEDs in the light zone with fewer lights to meet the requirements of the edge display of the image, thus avoiding the original design of the light zone with more lights, which requires more LEDs to be lit, resulting in severe halo at the edge of the displayed image.

[0046] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A backlight structure, characterized in that: The invention comprises a driving substrate and a light emitting unit arrayed on the driving substrate, wherein the driving substrate is provided with a plurality of light areas with a large number of lights and a plurality of light areas with a small number of lights, wherein the light areas with a large number of lights include light areas with a number of lights greater than or equal to 4; the light areas with a small number of lights include light areas with a number of lights less than or equal to 3 and greater than or equal to 1; the light areas with a large number of lights are arranged at intervals, and the light areas with a small number of lights are arranged between adjacent light areas with a large number of lights; Each light area with a large number of lights and each light area with a small number of lights is respectively provided with the light-emitting units with a corresponding number of lights.

2. The backlight structure according to claim 1, characterized in that: The light area with many lamps is a light area with many lamps having the same number of lamps, and the light area with few lamps includes light areas with few lamps having a plurality of different numbers of lamps.

3. The backlight structure according to claim 2, characterized in that: The light area with more lights includes one of a four-light area, a five-light area, a six-light area, a seven-light area, an eight-light area and a nine-light area; the light area with fewer lights includes at least two of a three-light area, a two-light area and a one-light area.

4. The backlight structure according to claim 3, characterized in that: The light area with many lights is a four-light area, the four-light area is a 2*2 array, and the light area with few lights includes a two-light area and a one-light area; two-light areas are arranged between adjacent light areas with many lights, and one-light area is arranged between adjacent light areas with few lights.

5. The backlight structure according to claim 4, characterized in that: A two-lamp light area is arranged between adjacent multiple-lamp light areas, the two-lamp light areas arranged between adjacent multiple-lamp light areas in the row direction are a 2*1 array, and the two-lamp light areas arranged between adjacent multiple-lamp light areas in the column direction are a 1*2 array.

6. The backlight structure according to claim 3, characterized in that: The light area with many lights is a light area with four lights, the light area with four lights is a 2*2 array, and the light area with few lights includes a light area with two lights and a light area with three lights; a light area with two lights is arranged between adjacent light areas with many lights, and a light area with three lights is arranged between adjacent light areas with few lights.

7. The backlight structure according to claim 1, characterized in that: The high-lamp-number light area includes a plurality of high-lamp-number light areas with different numbers of lights, and the low-lamp-number light area includes a plurality of low-lamp-number light areas with different numbers of lights.

8. The backlight structure according to claim 7, characterized in that: The plurality of light areas include at least two of four-light areas, five-light areas, six-light areas, seven-light areas, eight-light areas and nine-light areas; the plurality of light areas include at least two of three-light areas, two-light areas and one-light area.

9. The backlight structure according to claim 8, characterized in that: The light area with more lights includes a light area with four lights and a light area with six lights, the light area with four lights is a 2*2 array, the light area with six lights is a 3*2 array, and the light area with fewer lights includes at least two of a light area with three lights, a light area with two lights and a light area with one light.

10. A display device, characterized in that: Comprising the backlight structure as claimed in any one of claims 1 to 9.

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