Pixel arrangement structure, display panel and display device

Abstract

The utility model provides a pixel arrangement structure, a display panel and a display device, relates to the technical field of display devices, and solves the technical problems that an existing pixel arrangement structure is low in display resolution and high in cost. The pixel arrangement structure comprises a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels, the plurality of sub-pixel columns are arranged in the first direction, the first sub-pixels, the second sub-pixels and the third sub-pixels in each sub-pixel column are sequentially, repeatedly and alternately arranged, and each even-number sub-pixel column deviates by the same deviation value relative to each odd-number sub-pixel column in the first direction; every two adjacent sub-pixel rows are mutually staggered in the first direction, and the sub-pixels in the same sub-pixel row are the same sub-pixel; a virtual pixel unit can be formed by each sub-pixel column and three adjacent and three different sub-pixels of every two adjacent sub-pixel columns. The utility model has the advantages that the display resolution can be improved, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of display devices, and specifically relates to a pixel arrangement structure, a display panel and a display device. Background Art

[0002] Display screens are important human-computer interaction media. From smart watches / bracelets to mobile phones, computers, and dedicated service terminals, to large display screens for displays, conference displays, advertising screens and other smart devices, all need to use display screens as human-computer interaction media. In the existing technology, commonly used display screens mainly have two technical routes: LCD and OLED. In addition, MiniLED and Micro LED display technologies are also developing rapidly. For large display screens, LED display technology is used.

[0003] In the current LED display screen, a conventional pixel arrangement structure is to arrange three LED chips emitting three primary colors of light on a rectangular chip LED device, with one LED device as a physical pixel unit, and the dot spacing between two adjacent LED devices is D. The light emission of the LED display screen using multiple LED devices as the pixel arrangement structure is mainly manifested as point light emission, and the pixel clarity of the display screen is mainly affected by the dot spacing D. With the continuous development of LED display technology, higher requirements are put forward for high-density and small-pitch display screens, and the attention to clarity and light consistency will also be higher and higher. The light emission of the LED display screen is mainly manifested as point light emission, and the pixel clarity of the display screen is mainly affected by the dot spacing D. Therefore, the LED display screen using multiple LED devices each with three LED chips as the pixel arrangement structure has a low display resolution due to the large dot spacing.

[0004] In addition, another conventional pixel arrangement structure is to use four sub-pixels as a four-LED light pixel unit, and the four sub-pixels include two red sub-pixels, one green sub-pixel and one blue sub-pixel arranged in a rectangular shape. Its pixel arrangement structure can split a pixel into four independent LED units, and each LED unit reproduces the corresponding primary color information of four adjacent pixels in a time-division multiplexing manner. Although it can achieve a virtual pixel density increased by 4 times and the effective visual pixel density can be increased by 4 times at most, it still has the disadvantage of low display resolution, and because the number of LED chips and constant current chips driving LEDs is increased by one-third compared to the real pixels corresponding to the physical pixel unit, the product cost is high.

[0005] Therefore, there is an urgent need to provide a pixel arrangement structure, a display panel and a display device that can improve display resolution and reduce costs. Utility Model Content

[0006] In view of this, the utility model provides a pixel arrangement structure, a display panel and a display device to solve the technical problems of low display resolution and high cost in the existing pixel arrangement structure.

[0007] The technical solution adopted by this utility model:

[0008] On the one hand, the utility model provides a pixel arrangement structure, including: a first sub-pixel, a second sub-pixel and a third sub-pixel, each of which is a plurality of sub-pixels; a plurality of sub-pixel columns arranged along a first direction, in each sub-pixel column, the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged alternately in sequence and repeatedly, in a second direction perpendicular to the first direction, the plurality of sub-pixel columns include a plurality of odd sub-pixel columns and a plurality of even sub-pixel columns, each even sub-pixel column is offset by the same offset value relative to each odd sub-pixel column in the first direction, each odd sub-pixel column and each even sub-pixel column are respectively arranged in alignment in the second direction into a plurality of sub-pixel rows, two adjacent sub-pixel rows are staggered in the first direction, and sub-pixels located in the same sub-pixel row are the same seed pixels; for each sub-pixel column and three and three different adjacent sub-pixels in two adjacent sub-pixel columns, a virtual pixel unit can be formed.

[0009] Furthermore, one of the first sub-pixel, the second sub-pixel and the third sub-pixel can be multiplexed by 9 virtual pixel units, and the 9 virtual pixel units include 3 virtual pixel units in the shape of long strips and 6 virtual pixel units in the shape of triangles.

[0010] Furthermore, each sub-pixel includes an anode pad and a cathode pad, the anode pads of each sub-pixel in the same sub-pixel column are connected in series by the same anode circuit, and the cathode pads of each sub-pixel in the same sub-pixel column are connected in parallel by different cathode circuits.

[0011] Furthermore, each sub-pixel column is arranged at equal intervals in the second direction, and two adjacent sub-pixels in each sub-pixel column have a first spacing value in the first direction, and the first sub-pixels, the second sub-pixels and the third sub-pixels are respectively arranged into a plurality of first sub-pixel rows, a plurality of second sub-pixel rows and a plurality of third sub-pixel rows, and in the first direction, the first sub-pixel rows, the second sub-pixel rows and the third sub-pixel rows are repeatedly and alternately arranged at equal intervals.

[0012] Further, the offset value=0.5×the first spacing value.

[0013] Furthermore, the virtual pixel units formed between any two adjacent sub-pixel columns are in the shape of an acute triangle.

[0014] Furthermore, the total number of virtual pixel units is set to a, the total number of sub-pixels in each sub-pixel row is set to b, the total number in each sub-pixel column is set to c, and the following condition is satisfied: a=9bc-6b-4c+2.

[0015] Furthermore, the first sub-pixel, the second sub-pixel and the third sub-pixel emit red light, green light and blue light respectively.

[0016] On the other hand, the utility model provides a display panel, including a circuit board and a pixel arrangement structure arranged on the circuit board, and the pixel arrangement structure is any one of the above pixel arrangement structures.

[0017] On the other hand, the utility model provides a display device, comprising any one of the above display panels.

[0018] In summary, the beneficial effects of the utility model are as follows:

[0019] The pixel arrangement structure of the utility model adopts a column-aligned and row-staggered arrangement mode for each sub-pixel, so that a plurality of virtual pixel units can be obtained by using three adjacent different sub-pixels, thereby achieving the purpose of improving display resolution and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment of the utility model will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0021] Figure 1 It is a partial structure and circuit diagram of the pixel arrangement structure of the utility model (the anode circuit is omitted);

[0022] Figure 2 This is a partial structure and circuit diagram of the pixel arrangement structure of the utility model (the anode circuit is highlighted)

[0023] Figure 3 It is a partial structural schematic diagram of the specific arrangement of each sub-pixel of the pixel arrangement structure of the utility model;

[0024] Parts and numbers in the picture:

[0025] 1. First sub-pixel; 2. Second sub-pixel; 3. Third sub-pixel; 4. Virtual pixel unit; 5. Anode pad; 6. Cathode pad; 7. Anode circuit; 8. Cathode circuit;

[0026] Y, first direction; X, second direction. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0028] Please refer to Figures 1 to 3As an object of the present invention, a pixel arrangement structure is provided, which includes a plurality of first sub-pixels 1, second sub-pixels 2 and third sub-pixels 3 and a plurality of sub-pixel columns arranged along a first direction Y. In the present invention, the first sub-pixels 1, the second sub-pixels 2 and the third sub-pixels 3 specifically use a red light LED chip R, a green light LED chip G and a blue light LED chip B that emit red light, green light and blue light respectively. In each sub-pixel column, the first sub-pixels 1, the second sub-pixels 2 and the third sub-pixels 3 are alternately arranged in sequence and repeatedly. In a second direction perpendicular to the first direction Y, the first sub-pixels 1, the second sub-pixels 2 and the third sub-pixels 3 are arranged in a plurality of columns. In the direction X, the multiple columns of sub-pixel columns include multiple columns of odd sub-pixel columns and multiple columns of even sub-pixel columns. Each even sub-pixel column is offset by the same offset value relative to each odd sub-pixel column in the first direction Y. Each odd sub-pixel column and each even sub-pixel column are respectively arranged in a plurality of sub-pixel rows in a relatively aligned manner in the second direction X. Two adjacent sub-pixel rows are staggered in the first direction Y. In other words, on a first plane perpendicular to the first direction Y, the projections of each sub-pixel column on the first plane do not overlap. On a second plane perpendicular to the second direction X, the projections of each sub-pixel row on the second plane do not overlap. The sub-pixels in the same sub-pixel row are the same seed pixels. For example, in Figure 3 , from top to bottom along the first direction Y, the sub-pixels in the first row are all second sub-pixels 2, the sub-pixels in the second row are all first sub-pixels 1, the sub-pixels in the third row are all third sub-pixels 3, and so on. For each sub-pixel column and the three adjacent and three different sub-pixels of two adjacent sub-pixel columns, a virtual pixel unit 4 can be formed. Therefore, the pixel arrangement structure of the utility model adopts a column-aligned and row-staggered arrangement for each sub-pixel, so that each sub-pixel of the odd sub-pixel column and the even sub-pixel column are arranged at intervals along the first direction Y, that is, in the second direction X, each row corresponding to each odd sub-pixel column is horizontally aligned, and each row corresponding to each even sub-pixel column is also horizontally aligned, and the sub-pixel rows of the adjacent odd sub-pixel columns and the sub-pixel rows of the even sub-pixel columns are arranged staggered up and down, so that multiple virtual pixel units 4 can be obtained by using three adjacent different sub-pixels, which can achieve the purpose of improving display resolution and reducing costs.

[0029] Please refer to Figure 1 and Figure 3 Specifically, for the first sub-pixel 1, the second sub-pixel 2 and the third sub-pixel 3, when they are located in the middle of the display panel, any one of the three sub-pixels can be reused by 9 virtual pixel units 4, and the 9 virtual pixel units 4 include 3 virtual pixel units 4 in the shape of long strips and 6 virtual pixel units 4 in the shape of triangles. In addition, when they are located at the edge of the display panel, any one of the three sub-pixels can be reused by less than 9 virtual pixel units 4, and the specific number of virtual pixel units 4 is determined accordingly by the different specific positions of different sub-pixels. Figure 3 As shown, for a clear description, the red LED chip R, the green LED chip G and the blue LED chip B corresponding to the first sub-pixel 1, the second sub-pixel 2 and the third sub-pixel 3 are marked with R, G, B and their different subscripts to correspond to different locations, and the first digit of each subscript is the column number and the last two digits are the row number, and Figure 3 The number of columns and rows in the example are all counted starting from 1, so, 26 As a third sub-pixel 3, the pixel multiplexing includes the B 26 The virtual pixel units 4 of the sub-pixel are described below. The three long strip virtual pixel units 4 are: 22 G 24 B 26 , R 28 G 24 B 26 , R 28 G 210 B 26 , the virtual pixel units 4 of the six triangles are: R 15 G 24 B 26 , R 15 G 17 B 26 , R 28 G 17 B 26 , R 35 G 24 B 26 , R 35 G 37 B 26 , R 28 G 37 B 26 Therefore, compared with the traditional pixel arrangement structure, especially the pixel arrangement structure of the four-LED lamp pixel unit, under the same number of sub-pixels, the virtual pixel unit 4 achieved by the row staggered arrangement of the pixel arrangement structure of the utility model can obtain a display effect equivalent to 8 times the real pixels, and can reduce the number of sub-pixels and the corresponding constant current chip number, especially compared with the traditional four-LED lamp pixel unit, each is reduced by 25%, thereby improving the display resolution and saving costs.

[0030] Please refer to Figure 1 and Figure 2 Preferably, each sub-pixel includes an anode pad 5 and a cathode pad 6, and the anode pads 5 of each sub-pixel located in the same sub-pixel column are connected in series by the same anode line 7, and the cathode pads 6 of each sub-pixel located in the same sub-pixel column are connected in parallel by different cathode lines 8. In this way, the wiring of each sub-pixel in the electrically connected pixel arrangement structure is simplified, which is more conducive to simplifying the current control and the number of corresponding constant current chips.

[0031] Please refer to Figure 3 Preferably, each sub-pixel column is arranged at an equal interval in the second direction X, and two adjacent sub-pixels in each sub-pixel column have a first spacing value in the first direction Y. The first sub-pixel 1, the second sub-pixel 2 and the third sub-pixel 3 are respectively arranged into a plurality of first sub-pixel rows, a plurality of second sub-pixel rows and a plurality of third sub-pixel rows. In the first direction Y, the first sub-pixel rows, the second sub-pixel rows and the third sub-pixel rows are repeatedly and alternately arranged at an equal interval. Therefore, the arrangement of each sub-pixel in the entire pixel arrangement structure is compact and uniform, so that the light emission uniformity is high.

[0032] Preferably, the offset value=0.5×the first spacing value. In this way, the virtual pixel units 4, especially the virtual pixel units 4 formed between two adjacent sub-pixel columns, can be arranged uniformly, so that the light display has high resolution and uniformity.

[0033] Please refer to Figure 1 and Figure 2 Preferably, the virtual pixel units 4 formed between any two adjacent sub-pixel columns are in the form of an acute triangle. Therefore, it can be understood that one red LED chip, one green LED chip, and one blue LED chip can be combined into a plurality of virtual pixel points in the form of an acute triangle. In particular, when the offset value is 0.5×the first spacing value, the acute triangle is specifically an isosceles triangle. Thus, Figure 1 As shown, the virtual pixel units 4 between any two adjacent sub-pixel columns are arranged to form isosceles triangles with their ends facing each other, which further helps to improve the light emission uniformity.

[0034] Preferably, the total number of virtual pixel units 4 is set to a, the total number of sub-pixels in each sub-pixel row is set to b, and the total number of sub-pixels in each sub-pixel column is set to c, and the following conditions are satisfied: a=9bc-6b-4c+2. Specifically, the inventors have repeatedly calculated that the pixel arrangement structure of the present invention can obtain a total number of virtual pixel units 4. For example, referring to Figure 1, with R, G, and B corresponding to the red LED chip, the green LED chip, and the blue LED chip, respectively. The bracket marks with numbers 1 to 4 and the triangle marks with numbers 1 to 10 inside are 1R1G1B, which can be combined into a total of 10 virtual pixels, namely, virtual pixel units 4 (in this article, the same understanding is made when there is no conflict). Take two rows and two columns of 4 RGB combined real pixels as an example: the 10 triangles between the two sub-pixel columns are marked as 1R1G1B, which can be combined into 10 virtual pixels, and each column of RGB can be By combining 4 1R1G1B, the conversion relationship between real pixel points and virtual pixel points can be calculated as follows: bc = (a + 6b + 4c - 2) / 9, a is the total number of virtual pixel points, b * c is the total number of real pixel points, wherein b is the total number of real pixel points in each sub-pixel row, and c is the total number of real pixel points in each sub-pixel column. Therefore, the total number of real pixel points of the unit board of the display module using the pixel arrangement structure of the utility model is equal to row × column, that is, b * c; the virtual pixel point is a, and then the conversion can be obtained as a = 9bc-6b-4c + 2; Figure 1 Substituting the two rows and two columns in the formula, we can get the number of virtual pixels a=18 and the number of real pixels b*c=4. When the number of sub-pixel rows and sub-pixel columns is large enough, a:b*c is approximately equal to 8:1. For example: for a 4-lamp virtual module with a pixel pitch of about 2.53mm and an outer size of 152*114mm, if calculated by real pixels: 60 dots in a row and 45 dots in a column, the total number of real pixels is 2700 dots. If it is a 4LED lamp pixel unit used in the traditional pixel arrangement structure, the total number of virtual pixels is approximately 4 times the total number of real pixels, and according to Figure 1 The example of the present invention pixel arrangement structure is calculated by the staggered combination of RGB three LED lamps, and the total number of virtual pixels is about 8 times the total number of real pixels, which is equivalent to twice the total number of virtual pixels that can be obtained by the traditional pixel arrangement structure. Furthermore, for a display panel with a 4K screen pixel count (3840*2160), since b=3840, c=2160, the formula a=9bc-6b-4c+2=74617922 is substituted, so a:bc=74617922 / (3840*2160)≈8.99, so the ratio of the total number of virtual pixels to the total number of real pixels is approximately equal to 9:1, so the present invention pixel arrangement structure and the display module and display screen using the pixel arrangement structure can obtain more virtual pixels on the basis of only using the staggered combination of 3LED lamps, which not only obtains a higher display resolution, but also reduces costs.

[0035] As another object of the present invention, a display panel is provided, which includes a circuit board and any of the above pixel arrangement structures arranged on the circuit board. The display panel has the beneficial technical effects brought by any of the above pixel arrangement structures, which will not be described in detail here. The display panel can be an LED (Light Emitting Diode) display panel, a COB display panel, an OLED (Organic Light-Emitting Diode) display panel, etc.

[0036] As another object of the present invention, a display device is provided and has the effects of any of the above display panels, which will not be described in detail here. For example, the display device can be an LED display screen, a mobile phone, a tablet, a PDA, a smart watch, etc.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pixel arrangement structure, characterized in that: include: There are a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels; A plurality of sub-pixel columns arranged along a first direction, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel in each of the sub-pixel columns are sequentially and repeatedly arranged alternately, and in a second direction perpendicular to the first direction, the plurality of sub-pixel columns include a plurality of odd sub-pixel columns and a plurality of even sub-pixel columns, each of the even sub-pixel columns is offset by the same offset value relative to each of the odd sub-pixel columns in the first direction, each of the odd sub-pixel columns and each of the even sub-pixel columns are respectively aligned in the second direction to form a plurality of sub-pixel rows, two adjacent sub-pixel rows are staggered in the first direction, and the sub-pixels in the same sub-pixel row are the same seed pixels; For each of the sub-pixel columns and three adjacent and three different sub-pixels in each of the two adjacent sub-pixel columns, a virtual pixel unit may be formed.

2. The pixel arrangement structure according to claim 1, characterized in that: One of the first sub-pixel, the second sub-pixel and the third sub-pixel can be reused by 9 virtual pixel units, and the 9 virtual pixel units include 3 virtual pixel units in the shape of long strips and 6 virtual pixel units in the shape of triangles.

3. The pixel arrangement structure according to claim 1, characterized in that: Each sub-pixel includes an anode pad and a cathode pad. The anode pads of the sub-pixels in the same sub-pixel column are connected in series by the same anode line, and the cathode pads of the sub-pixels in the same sub-pixel column are connected in parallel by different cathode lines.

4. The pixel arrangement structure according to claim 1, characterized in that: Each of the sub-pixel columns is arranged at equal intervals in the second direction, and two adjacent sub-pixels in each of the sub-pixel columns have a first spacing value in the first direction, the first sub-pixels, the second sub-pixels and the third sub-pixels are respectively arranged into a plurality of first sub-pixel rows, a plurality of second sub-pixel rows and a plurality of third sub-pixel rows, and in the first direction, the first sub-pixel rows, the second sub-pixel rows and the third sub-pixel rows are repeatedly and alternately arranged at equal intervals.

5. The pixel arrangement structure according to claim 4, characterized in that: Offset value = 0.5 × first spacing value.

6. The pixel arrangement structure according to claim 1, characterized in that: The virtual pixel units formed between any two adjacent sub-pixel columns are in the shape of an acute triangle.

7. The pixel arrangement structure according to claim 1, characterized in that: The total number of the virtual pixel units is set to a, the total number of sub-pixels in each of the sub-pixel rows is set to b, the total number of sub-pixels in each of the sub-pixel columns is set to c, and the following condition is satisfied: a=9bc-6b-4c+2.

8. The pixel arrangement structure according to any one of claims 1 to 7, characterized in that: The first sub-pixel, the second sub-pixel and the third sub-pixel emit red light, green light and blue light respectively.

9. A display panel, characterized in that It comprises a circuit board and a pixel arrangement structure arranged on the circuit board, wherein the pixel arrangement structure is the pixel arrangement structure according to any one of claims 1 to 8.

10. A display device, characterized in that Comprising the display panel as claimed in claim 9.

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