A pixel arrangement structure and an LED display device

Abstract

The present invention relates to the technical field of LED display, and particularly to a pixel arrangement structure and an LED display device. It includes a plurality of offset pixel arrays, each pixel in the offset pixel array corresponds to a light-emitting device, and each light-emitting device includes a blue sub-pixel, a red sub-pixel and a green sub-pixel. Among them, the top of the red sub-pixel is not lower than the tops of the blue sub-pixel and the green sub-pixel; the bottom of the red sub-pixel is higher than the bottoms of the blue sub-pixel and the green sub-pixel. By placing the red sub-pixel at a position slightly above the middle of the red LED package, thus, the pixel arrangement structure provided by the present invention can effectively reduce the pre-mixed light between the red light and the blue light and the green light, and can effectively reduce the light leakage between sub-pixels.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display, and particularly to a pixel arrangement structure and an LED display device. Background Art

[0002] With the continuous development of society and the strong advocacy of the country, the LED industry has become one of the most active industries today, and LED display products have gradually entered all fields of social life. At the same time, with the technological innovation and development of LED displays, small-pitch seamless connection LED displays with high resolution per unit area have become the mainstream products of LED displays. It can display higher-definition images and videos, and can also display more videos and image frames. Especially in the application of image splicing, seamless and arbitrary large-area splicing can be achieved.

[0003] Currently, the arrangement of pixels in LED displays generally refers to the RGB arrangement of liquid crystal displays. Different from liquid crystal panels, since the black matrix material between pixels and sub-pixels in LED displays is resin material, it is difficult to completely block light. When the LED display shows white light, light leakage and pre-mixed light between sub-pixels are serious, which limits the display quality of current LED displays. Summary of the Invention

[0004] The purpose of the present invention is to provide a pixel arrangement structure and an LED display device to solve the technical problems in the prior art that since the black matrix material between pixels and sub-pixels in LED displays is resin material, it is difficult to completely block light, and when the LED display shows white light, light leakage and pre-mixed light between sub-pixels are serious.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a pixel arrangement structure, including a plurality of offset pixel arrays. Each pixel in the offset pixel array corresponds to a light-emitting device, and each light-emitting device includes a blue sub-pixel, a red sub-pixel, and a green sub-pixel. Among them, the top of the red sub-pixel is not lower than the tops of the blue sub-pixel and the green sub-pixel; the bottom of the red sub-pixel is higher than the bottoms of the blue sub-pixel and the green sub-pixel.

[0007] Further, the red sub-pixel is located between the blue sub-pixel and the green sub-pixel.

[0008] Further, the areas of the blue sub-pixel and the green sub-pixel are equal.

[0009] Further, the area of the red sub-pixel is smaller than the areas of the blue sub-pixel and the green sub-pixel; the area of the red sub-pixel is half of the area of the blue sub-pixel or the green sub-pixel.

[0010] Further, the top of the red sub-pixel is higher than or horizontal to the top of the blue sub-pixel or the green sub-pixel; the bottom of the red sub-pixel is horizontal or lower than half of the height of the blue sub-pixel or the green sub-pixel, and higher than the bottom of the blue sub-pixel or the green sub-pixel.

[0011] Further, the shapes of the blue sub-pixel and the green sub-pixel are both square or oval.

[0012] Further, the red sub-pixel is square or drop-shaped.

[0013] Further, the overall shape formed by the blue sub-pixel, the red sub-pixel and the green sub-pixel is an inverted Mickey Mouse head shape.

[0014] Further, the blue sub-pixel is a blue light chip, the red sub-pixel is a red light chip, and the green sub-pixel is a green light chip.

[0015] Further, each of the light-emitting devices further includes a blue LED package, a red LED package and a green LED package. The blue LED package, the red LED package and the green LED package are arranged horizontally in alignment. The blue sub-pixel is disposed at the middle position of the blue LED package, the green sub-pixel is disposed at the middle position of the green LED package, and the red sub-pixel is disposed at a position slightly above the middle of the red LED package.

[0016] The present invention also provides an LED display device, including a substrate, a black matrix, a black polarizing film, and a biased pixel array having the pixel arrangement structure as described in any one of the above on the substrate; the height of the black matrix is lower than the height of the biased pixel array; the black polarizing film is located on the top of the biased pixel array.

[0017] In the pixel arrangement structure provided by the present invention, by placing the red sub-pixel at a position slightly above the middle of the red LED package, thus, the pixel arrangement structure provided by the present invention can effectively reduce the pre-mixed light between the red light and the blue light and the green light, and can effectively reduce the light leakage between the sub-pixels. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the pixel arrangement structure provided by an embodiment of the present invention Figure 1 。

[0019] Figure 2It is a schematic diagram of the overall shape formed by the blue sub-pixels, the red sub-pixels, and the green sub-pixels of the pixel arrangement structure provided by the embodiments of the present invention.

[0020] Figure 3 It is a schematic diagram of the pixel arrangement structure provided by the embodiments of the present invention Figure 2 。

[0021] Figure 4 It is a schematic diagram of the pixel arrangement structure and the LED display device provided by the embodiments of the present invention Figure 1 。

[0022] Figure 5 It is a schematic diagram of the pixel arrangement structure and the LED display device provided by the embodiments of the present invention Figure 2 。 Detailed implementation manners

[0023] In order to make the objectives, technical solutions and beneficial effects of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] In order to illustrate the technical solutions described in the present invention, the following will be described through specific embodiments.

[0025] Please refer to Figure 1 , a pixel arrangement structure provided in the first embodiment of the present invention includes a plurality of offset pixel arrays 100. Each pixel in the offset pixel array 100 corresponds to a light-emitting device 10. Each light-emitting device 10 includes a blue sub-pixel 11, a red sub-pixel 12, and a green sub-pixel 13. Among them, the top of the red sub-pixel 12 is not lower than the tops of the blue sub-pixel 11 and the green sub-pixel 13; the bottom of the red sub-pixel 12 is higher than the bottoms of the blue sub-pixel 11 and the green sub-pixel 13.

[0026] In the first embodiment of the present invention, the red sub-pixel 12 is located between the blue sub-pixel 11 and the green sub-pixel 13.

[0027] In the first embodiment of the present invention, the areas of the blue sub-pixel 11 and the green sub-pixel 13 are equal.

[0028] In the first embodiment of the present invention, the area of the red sub-pixel 12 is smaller than the areas of the blue sub-pixel 11 and the green sub-pixel 13; for example, the area of the red sub-pixel 12 is half of the area of the blue sub-pixel 11 or the green sub-pixel 13.

[0029] In the first embodiment of the present invention, the top of the red sub-pixel 12 is higher than or level with the top of the blue sub-pixel 11 or the green sub-pixel 13; the bottom of the red sub-pixel 12 is level with or lower than half of the height of the blue sub-pixel 11 or the green sub-pixel 13, and higher than the bottom of the blue sub-pixel 11 or the green sub-pixel 13.

[0030] In the first embodiment of the present invention, the shapes of both the blue sub-pixel 11 and the green sub-pixel 13 are square or oval.

[0031] In the first embodiment of the present invention, the red sub-pixel 12 is square or drop-shaped.

[0032] In the first embodiment of the present invention, the overall shape formed by the blue sub-pixel 11, the red sub-pixel 12, and the green sub-pixel 13 is an inverted Mickey Mouse head shape, as Figure 2 shown.

[0033] In the first embodiment of the present invention, the blue sub-pixel 11 is a blue light chip, the red sub-pixel 12 is a red light chip, and the green sub-pixel 13 is a green light chip.

[0034] In the first embodiment of the present invention, as Figure 3 shown, each light-emitting device 10 further includes a blue LED package 14, a red LED package 15, and a green LED package 16. The blue LED package 14, the red LED package 15, and the green LED package 16 are arranged horizontally in alignment. The blue sub-pixel 11 is disposed at the middle position of the blue LED package 14, the green sub-pixel 13 is disposed at the middle position of the green LED package 16, and the red sub-pixel 12 is disposed at a position slightly above the middle of the red LED package 15.

[0035] Please refer to Figures 4 to 5, in Embodiment 2 of the present invention, an LED display device is further proposed, which includes a substrate 17, a black matrix 18, a black polarizing film 19, and a biased pixel array 100 of the pixel arrangement structure as described in any one of the above on the substrate 17; the height of the black matrix 18 is lower than the height of the biased pixel array 100, for example, the height of the black matrix 18 is 60% of that of the biased pixel array 100, covering the substrate 17, blocking the metal lines on the substrate 17 that can reflect light, reducing stray light. In addition, it also allows part of the light of the biased pixel array 100 to exit from the side, forming a spatial light spot, bringing a deep display effect. Another advantage of the black matrix 18 having a height lower than that of the biased pixel array 100 is to avoid the exit of pre-mixed light formed by the light exiting from the side of the biased pixel array 100; the black polarizing film 19 is located on the top of the biased pixel array 100, performing optical shaping on the light emitted by the biased pixel array 100, filtering edge light and stray light, and sharpening pixel edges to effectively filter stray light, halo light, etc.

[0036] In Embodiment 2 of the present invention, dams (not shown in the figure) are further provided around the LED display device, the height of the dams is the same as the height of the blue LED package 14, the red LED package 15, and the green LED package 16, and the black polarizing film 19 is also located on the top of the dams.

[0037] The pixel arrangement structure provided by the present invention can effectively reduce the pre-mixed light between red light and blue and green lights, and can effectively reduce the light leakage between sub-pixels.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pixel arrangement structure, characterized in that, It includes a plurality of offset pixel arrays, each pixel in the offset pixel array corresponding to a light-emitting device, and each light-emitting device including a blue sub-pixel, a red sub-pixel, and a green sub-pixel. Among them, the red sub-pixel is located between the blue sub-pixel and the green sub-pixel, the top of the red sub-pixel is not lower than the tops of the blue sub-pixel and the green sub-pixel; the bottom of the red sub-pixel is higher than the bottoms of the blue sub-pixel and the green sub-pixel; the areas of the blue sub-pixel and the green sub-pixel are equal; the area of the red sub-pixel is smaller than the area of the blue sub-pixel or the green sub-pixel.

2. The pixel arrangement structure according to claim 1, characterized in that The top of the red sub-pixel is higher than or horizontal to the top of the blue sub-pixel or the green sub-pixel; the bottom of the red sub-pixel is horizontal or lower than half of the height of the blue sub-pixel or the green sub-pixel and higher than the bottom of the blue sub-pixel or the green sub-pixel.

3. The pixel arrangement structure according to claim 1, wherein, The shapes of the blue sub-pixel and the green sub-pixel are both square or oval.

4. The pixel arrangement structure according to claim 1, wherein, The red sub-pixel is square or drop-shaped.

5. The pixel arrangement structure according to claim 1, characterized in that, The overall shape formed by the blue sub-pixel, the red sub-pixel, and the green sub-pixel is an inverted Mickey Mouse head shape.

6. The pixel arrangement structure according to claim 1, characterized in that The blue sub-pixel is a blue light chip, the red sub-pixel is a red light chip, and the green sub-pixel is a green light chip.

7. The pixel arrangement structure according to claim 1, wherein Each light-emitting device further includes a blue LED package, a red LED package, and a green LED package. The blue sub-pixel is disposed at the middle position of the blue LED package, the green sub-pixel is disposed at the middle position of the green LED package, and the red sub-pixel is disposed at a position slightly above the middle of the red LED package.

8. An LED display device, characterized in that, It includes a substrate, a black matrix, a black polarizing film, and an offset pixel array with the pixel arrangement structure as described in any one of claims 1-7 located on the substrate; the height of the black matrix is lower than the height of the offset pixel array; The black polarizing film is located on the top of the offset pixel array.

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