Display panel, display screen and traffic signal display device

Abstract

The utility model relates to the technical field of screen display and provides a display panel, a display screen and a traffic signal display device which overcome the defects of high cost and low display resolution when special colored light needs to be displayed in the prior art. The display panel comprises a circuit board, a plurality of first sub-pixels and a plurality of second sub-pixels, the first sub-pixels and the second sub-pixels are arranged on the circuit board in an array mode, the first sub-pixels and the second sub-pixels are used for emitting first colored light and second colored light respectively, and every two adjacent first sub-pixels and second sub-pixels can form a virtual pixel unit. The virtual pixel units can emit third color light; the plurality of first sub-pixels and the plurality of second sub-pixels emit light independently to correspondingly obtain first color display content and second color display content, and the first sub-pixels and the second sub-pixels emit light simultaneously to obtain third color display content. The utility model has the advantages that the cost can be reduced and the display resolution can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen display, and in particular to a display panel, a display screen and a traffic signal 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 display screens for demonstrations, conference displays, advertising screens and other smart devices, all require 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 medium and large display screens, LED display technology is mainly used.

[0003] Generally, a small pitch display screen (pixel pitch Pitch ≤ 2.5mm) is realized by using RGB on the display panel as a group of pixels. There are two ways to package such a display screen. The first way is to use traditional packaging and SMD patch methods to complete the display panel packaging, while the second way is to use chip on board packaging technology (ChiponBoard) to flip R, G, B mini chip bonding on the circuit board, and then use molding or film to complete the display panel packaging.

[0004] However, for application scenarios such as traffic signals and stages, when special color light such as yellow light needs to be displayed, the display panel of the display screen needs to use yellow light sub-pixels that emit yellow light, which will result in higher costs, and the arrangement of multiple sub-pixels including yellow light sub-pixels is simple, and the effect of pixel multiplexing is not achieved, resulting in low display resolution.

[0005] Therefore, there is an urgent need to provide a display panel, a display screen and a traffic signal display device, which can not only emit special color light but also reduce costs and improve display resolution. Utility Model Content

[0006] The utility model aims at the disadvantages of the above-mentioned prior art that the emission of special color light has high cost and low display resolution. In order to achieve one purpose of the utility model, a display panel is provided, including: a circuit board and a plurality of first sub-pixels and a plurality of second sub-pixels arranged in an array on the circuit board, the first sub-pixels and the second sub-pixels are respectively used to emit a first color light and a second color light; in a first direction, the first sub-pixels and the second sub-pixels are respectively arranged into a plurality of first sub-pixel columns and a plurality of second sub-pixel columns; in a second direction perpendicular to the first direction, the first sub-pixel columns and the second sub-pixel columns are alternately arranged at equal intervals; in the second direction, the first sub-pixels and the second sub-pixel columns are arranged alternately at equal intervals; The first sub-pixel rows and the second sub-pixel rows are respectively arranged into a plurality of first sub-pixel rows and a plurality of second sub-pixel rows, and in a first direction, the first sub-pixel rows and the second sub-pixel rows are alternately arranged at equal intervals; every pair of adjacent first sub-pixel columns and the second sub-pixel columns have a first misalignment relative to each other in the first direction, and every pair of adjacent first sub-pixel rows and the second sub-pixel rows have a second misalignment relative to each other in the second direction; two adjacent first sub-pixels and second sub-pixels can form a virtual pixel unit, and the virtual pixel unit can emit a third color light; the plurality of first sub-pixels and the plurality of second sub-pixels can emit light separately to obtain a first color display content and a second color display content correspondingly, and the first sub-pixel and the second pixel can emit light simultaneously to obtain a third color display content.

[0007] Furthermore, each first sub-pixel and at least two adjacent second sub-pixels form at least two virtual pixel units, or each second sub-pixel and at least two adjacent first sub-pixels form at least two virtual pixel units.

[0008] Furthermore, each first sub-pixel and four adjacent second sub-pixels form four virtual pixel units, or each second sub-pixel and four adjacent first sub-pixels form four virtual pixel units.

[0009] Further, in the first direction, the spacing between each pair of adjacent first sub-pixels in the first sub-pixel column and each pair of adjacent second sub-pixels in the second sub-pixel column are both the first spacing, and in the second direction, the spacing between each pair of adjacent first sub-pixels in the first sub-pixel row and each pair of adjacent second sub-pixels in the second sub-pixel row are both the second spacing.

[0010] Furthermore, the first sub-pixel and the second sub-pixel are both rectangles with a width of W and a height of H, the first offset is set to 1.2-1.4H, the second offset is set to 0.5-0.7W, the first spacing is set to 3.4-3.6H, and the second spacing is set to 2.1-2.3W.

[0011] Furthermore, multiple first sub-pixels and multiple second sub-pixels are arranged as a square as a whole, the numerical value of the number of first sub-pixels in the first sub-pixel column being greater than the number of second sub-pixels in the second sub-pixel column and the numerical value of the number of first sub-pixels in the first sub-pixel row being greater than the number of second sub-pixels in the second sub-pixel row are both equal to the first difference, the numerical value of the number of second sub-pixels in the second sub-pixel column being greater than the number of first sub-pixels in the first sub-pixel column and the numerical value of the number of second sub-pixels in the second sub-pixel row being greater than the number of first sub-pixels in the first sub-pixel row are both the second difference, and the first difference and the second difference are both equal to one.

[0012] Further, when the first difference is one, each second sub-pixel forms four virtual pixel units with four adjacent first sub-pixels;

[0013] When the second difference is 1, each first sub-pixel forms four virtual pixel units with four adjacent second sub-pixels.

[0014] Furthermore, the first color light, the color light and the third color light are red light, green light and yellow light respectively.

[0015] To achieve another object of the present invention, a display screen is provided, comprising any one of the above display panels.

[0016] To achieve another purpose of the utility model, a traffic signal device is provided, comprising any of the above display screens, wherein the first color light, the third color light and the third color light are red light, green light and yellow light respectively, the first color display content and the second color display content are red and green circular patterns or arrow patterns corresponding to various traffic signals respectively, and the third color display content is yellow circular patterns or arrow patterns corresponding to various traffic signals and yellow pictures or texts.

[0017] The beneficial effects of the utility model are:

[0018] The utility model adopts the method of making the first sub-pixel and the second sub-pixel that emit the first color light and the second color light respectively emit light alone or together to obtain three different color lights respectively, especially the third color light obtained by pixel multiplexing, which has a very high display resolution, thereby not only reducing the cost but also improving the display resolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 It is a structural schematic diagram of the pixel arrangement structure of the display panel of the utility model;

[0021] Figure 2 A structural schematic diagram showing a method of forming two virtual pixel units in a display panel of the utility model;

[0022] Figure 3 Another structural schematic diagram showing a method of forming two virtual pixel units in the display panel of the utility model;

[0023] Figure 4 A structural schematic diagram showing a method of forming four virtual pixel units in a display panel of the utility model;

[0024] Figure 5 Another structural schematic diagram showing a method of forming four virtual pixel units in the display panel of the utility model;

[0025] Description of reference numerals:

[0026] 1-first sub-pixel; 2-second sub-pixel; 3-virtual pixel unit;

[0027] Y-first direction; X-second direction. DETAILED DESCRIPTION

[0028] 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", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present 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, an element limited by the sentence "includes..." does not exclude the presence of other identical elements in the process, method, article or device including the element. 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.

[0029] refer to Figures 1 to 5 As an object of the present invention, a display panel is provided, which includes a plurality of first sub-pixels 1 and a plurality of second sub-pixels 2 arranged in an array, the first sub-pixels 1 and the second sub-pixels 2 are used to emit a first color light and a second color light respectively. It can be understood that the first sub-pixel 1 and the second sub-pixel 2 can be specifically LED chips that emit different color lights. In the present invention, the first sub-pixel 1 is a red light LED chip that emits red light as the first color light and the first sub-pixel 1 is a green light LED chip that emits green light as the second color light. As a result, they emit light at the same time and mixed light can obtain yellow light as the third color light. In addition, the first sub-pixel 1 can also be a blue light LED chip that emits blue light and the second sub-pixel 2 is a red light LED. Then, they emit light at the same time and mixed light can obtain magenta light. In addition, if the first sub-pixel 1 is also a green light LED chip and the second sub-pixel 2 is a blue light LED, then they emit light at the same time and mixed light can obtain cyan light.

[0030] In a first direction Y, the first sub-pixels 1 and the second sub-pixels 2 are respectively arranged into a plurality of first sub-pixel columns and a plurality of second sub-pixel columns, and in a second direction X perpendicular to the first direction, the first sub-pixel columns and the second sub-pixel columns are alternately arranged at equal intervals, and in the second direction X, the first sub-pixels 1 and the second sub-pixels 2 are respectively arranged into a plurality of first sub-pixel rows and a plurality of second sub-pixel rows, and in the first direction, the first sub-pixel rows and the second sub-pixel rows are alternately arranged at equal intervals.

[0031] Every pair of adjacent first sub-pixel columns and second sub-pixel columns have a first misalignment relative to each other in the first direction Y, and every pair of adjacent first sub-pixel rows and second sub-pixel rows have a second misalignment relative to each other in the second direction X, that is, on a first plane perpendicular to the first direction Y, the projection of the first sub-pixel 1 and the projection of the second sub-pixel 2 do not overlap, and on a second plane perpendicular to the second direction X, the projection of the first sub-pixel 1 and the projection of the second sub-pixel 2 do not overlap.

[0032] Two adjacent first sub-pixels 1 and second sub-pixels 2 can form a virtual pixel unit 3, and the virtual pixel unit 3 can emit a third color light. A virtual pixel unit 3 can also be understood as a virtual pixel point, that is, using the "virtual pixel" technology, that is, using the visual persistence phenomenon of the human eye, to time-share multiplex real pixels and reproduce more virtual pixels. The display panel using the sub-pixel arrangement structure and the real pixel display panel have an equal number of LED chips. The resolution of the display panel can be improved, thereby reducing the cost of the display panel and the display panel, such as an LED display screen; in addition, the use of virtual pixel points can also reduce the user's fatigue when watching. Therefore, the first sub-pixel 1 and the second sub-pixel 2 forming each virtual pixel unit 3 emit light at the same time, and one of the sub-pixels is reused, so that the light emitted by the two is mixed to form a third color light. For example, the first sub-pixel 1 and the second sub-pixel 2 simultaneously emit red light and green light respectively, and yellow light is obtained after multiplexing and mixing.

[0033] Multiple first sub-pixels 1 and multiple second sub-pixels 2 can respectively emit light to display the first color display content and the second color display content, and the first sub-pixels 1 and the second sub-pixels 2 can simultaneously emit light to display the third color display content. For example, the first sub-pixel 1 can emit red light to display a red pattern and / or text, the second sub-pixel 2 can emit green light to display a green pattern and / or text, and the first sub-pixel 1 and the second sub-pixel 2 can simultaneously emit red light and green light to display a yellow pattern, picture or / and text.

[0034] Therefore, the display panel of the utility model obtains the third color light by mixing the light emitted by the first sub-pixel 1 and the second sub-pixel 2 without using the sub-pixel emitting the third color light, thereby reducing the use of one sub-pixel and the total number of sub-pixels, thereby reducing the cost, and obtaining a higher display resolution by multiplexing two adjacent first sub-pixels 1 and second sub-pixels 2. In addition, the application scenarios of the display panel can be expanded.

[0035] Please refer to Figure 2 and Figure 3 Specifically, each first sub-pixel 1 forms at least two virtual pixel units 3 with at least two second sub-pixels 2 adjacent thereto. Figure 2 The figure shows a situation where a first sub-pixel 1 and two adjacent second sub-pixels 2 form two virtual pixel units 3, or each second sub-pixel 2 and at least two adjacent first sub-pixels form at least two virtual pixel units 3. Figure 3 The situation in which a second sub-pixel 2 and two adjacent first sub-pixels 1 form two virtual pixel units 3 is shown. In this way, when a first sub-pixel 1 or a second sub-pixel 2 is pixel multiplexed twice or three times, the display control method is relatively simple on the basis of obtaining the third color display content with a higher display resolution.

[0036] Please refer to Figure 4 and Figure 5 Specifically, each first sub-pixel 1 forms four virtual pixel units 3 with four adjacent second sub-pixels 2, so that the first sub-pixel 1 is located in a square formed by the four second sub-pixels 2 surrounding it. Figure 4 The figure shows a situation where a first sub-pixel 1 and four adjacent second sub-pixels 2 form four virtual pixel units 3, or each second sub-pixel 2 and four adjacent first sub-pixels form four virtual pixel units 3, so that the second sub-pixel 2 is located in the square formed by the four first sub-pixels 1 surrounding it. Figure 5 The figure shows a situation where a second sub-pixel 2 and four adjacent first sub-pixels 1 form four virtual pixel units 3. In this way, four pixel multiplexing is obtained in a first sub-pixel 1 or a second sub-pixel 2. Although the display control method is relatively complicated, a third-color display content with a higher display resolution can be obtained.

[0037] Please refer to Figure 1 , Figure 4 and Figure 5Preferably, in the first direction Y, the spacing between each pair of adjacent first sub-pixels 1 in the first sub-pixel column and each pair of adjacent second sub-pixels 2 in the second sub-pixel column is the first spacing, and in the second direction X, the spacing between each pair of adjacent first sub-pixels 1 in the first sub-pixel row and each pair of adjacent second sub-pixels 2 in the second sub-pixel row is the second spacing. In this way, the overall sub-pixel arrangement structure is compact, and the center distances between a sub-pixel and the other four sub-pixels surrounding it are equal, that is, the sub-pixel is located at the center point of the square surrounded by the four other sub-pixels, so that the uniformity of the third color light emitted by the mixed light is high.

[0038] Please refer to Figure 1 Specifically, the first sub-pixel 1 and the second sub-pixel 2 are both rectangles with a width of W and a height of H, the first offset is set to 1.2-1.4H, the second offset is set to 0.5-0.7W, the first spacing is set to 3.4-3.6H, and the second spacing is set to 2.1-2.3W. After repeated experiments by the inventor, the above specific numerical values ​​are used to arrange each first sub-pixel 1 and each second sub-pixel 2, and the best balance is achieved between a reasonable total number of sub-pixels and a high display resolution.

[0039] Please refer to Figure 4 and Figure 5 Preferably, a plurality of first sub-pixels 1 and a plurality of second sub-pixels 2 are arranged as a whole in a square. The square described in this specification may be a rectangle or a square. The numerical value of the number of first sub-pixels 1 in the first sub-pixel column being greater than the number of second sub-pixels 2 in the second sub-pixel column and the numerical value of the number of first sub-pixels 1 in the first sub-pixel row being greater than the number of second sub-pixels 2 in the second sub-pixel row are both equal to the first difference, or the numerical value of the number of second sub-pixels 2 in the second sub-pixel column being greater than the number of first sub-pixels 1 in the first sub-pixel column and the numerical value of the number of second sub-pixels 2 in the second sub-pixel row being greater than the number of first sub-pixels 1 in the first sub-pixel row are both equal to the second difference, and the first difference and the second difference are both equal to one. In this case, compared to Figure 2 and Figure 3 With the pixel arrangement structure shown, the display panel is easier to align, package, and manufacture, and each sub-pixel is arranged compactly and regularly, without any empty space at the four corners of the circuit board.

[0040] Please refer to Figure 4 and Figure 5Specifically, when the first difference is one, each second sub-pixel 2 forms four virtual pixel units 3 with the four adjacent first sub-pixels. In this way, each second sub-pixel 2 can ensure four times of pixel reuse, ensuring a very high display resolution. When the second difference is one, each first sub-pixel 1 forms four virtual pixel units 3 with the four adjacent second sub-pixels 2. Similarly, each first sub-pixel 1 can ensure four times of pixel reuse, ensuring a very high display resolution.

[0041] As another object of the present invention, a display screen is provided, which includes any one of the above display panels. The display screen has the beneficial technical effects brought by any one of the above display panels, which will not be elaborated 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. The display screen can be applied to traffic signal display devices, stage lights, etc.

[0042] As another object of the present invention, a traffic signal display device is provided, which includes any of the above-mentioned display screens. In the present invention, the display screen of the traffic signal display device particularly adopts an LED display panel. It is known that the traffic signal display device also includes a support rod, and the display screen is fixed to the top of the support rod. The first color light, the color light and the third color light are red light, green light and yellow light respectively. The first color display content and the second color display content are red and green circular patterns or arrow patterns corresponding to various traffic signals respectively. The third color display content is a yellow circular pattern or arrow pattern and a yellow picture or text corresponding to various traffic signals. Specifically, the controller of the traffic signal display device controls the switch of the red light or / green light in a specific area on the display panel according to the traffic signal to be displayed set by the program, so that the red light displayed A circular or red arrow indicates that passage is prohibited ahead or passage is prohibited in the direction indicated by the arrow, such as left turn, right turn, forward, etc. The displayed green circular or green arrow indicates that passage is permitted ahead or passage is permitted in the direction indicated by the arrow, and the controller is used to control the simultaneous opening or closing of the red light and the green light of the corresponding area on the display panel that meet the display requirements according to the required display pictures or texts of different scenes, so that the yellow light with higher display resolution through pixel multiplexing can not only more clearly display the warning ahead or the direction indicated by the arrow indicated by the yellow circular or yellow arrow, but also can especially display pictures such as "heavy fog" and "raining" or texts such as "traffic police manual control ahead", so that pictures or text content that cannot be provided by traditional traffic signal light warnings can be displayed, which greatly expands the display content and use of the traffic signal display device. In addition, according to actual needs, the first color display content and the second color display content can also be red pictures or texts and green pictures or texts, respectively, but the display resolution is lower than that of the yellow pictures or texts.

[0043] 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, those skilled in the art 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 by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A display panel, characterized in that: include: A circuit board and a plurality of first sub-pixels and a plurality of second sub-pixels arranged in an array on the circuit board, wherein the first sub-pixels and the second sub-pixels are used to emit a first color light and a second color light respectively; In a first direction, the first sub-pixels and the second sub-pixels are respectively arranged into a plurality of first sub-pixel columns and a plurality of second sub-pixel columns, and in a second direction perpendicular to the first direction, the first sub-pixel columns and the second sub-pixel columns are alternately arranged at equal intervals, and in the second direction, the first sub-pixels and the second sub-pixels are respectively arranged into a plurality of first sub-pixel rows and a plurality of second sub-pixel rows, and in the first direction, the first sub-pixel rows and the second sub-pixel rows are alternately arranged at equal intervals; Every pair of adjacent first sub-pixel columns and second sub-pixel columns have a first offset relative to each other in the first direction, and every pair of adjacent first sub-pixel rows and second sub-pixel rows have a second offset relative to each other in the second direction; Two adjacent first sub-pixels and the second sub-pixels may form a virtual pixel unit, and the virtual pixel unit may emit a third color light; A plurality of the first sub-pixels and a plurality of the second sub-pixels emit light separately to obtain a first color display content and a second color display content respectively, and a first sub-pixel and a second sub-pixel emit light simultaneously to obtain a third color display content.

2. The display panel according to claim 1, characterized in that: Each of the first sub-pixels and at least two of the second sub-pixels adjacent thereto form at least two virtual pixel units, or each of the second sub-pixels and at least two of the first sub-pixels adjacent thereto form at least two virtual pixel units.

3. The display panel according to claim 2, characterized in that: Each of the first sub-pixels and four adjacent second sub-pixels form four virtual pixel units, or each of the second sub-pixels and four adjacent first sub-pixels form four virtual pixel units.

4. The display panel according to claim 1, characterized in that: In the first direction, the spacing between each pair of adjacent first sub-pixels in the first sub-pixel column and each pair of adjacent second sub-pixels in the second sub-pixel column are both the first spacing, and in the second direction, the spacing between each pair of adjacent first sub-pixels in the first sub-pixel row and each pair of adjacent second sub-pixels in the second sub-pixel row are both the second spacing.

5. The display panel according to claim 4, characterized in that: The first sub-pixel and the second sub-pixel are both rectangles with a width of W and a height of H. The first offset is set to 1.2-1.4H, the second offset is set to 0.5-0.7W, the first spacing is set to 3.4-3.6H, and the second spacing is set to 2.1-2.3W.

6. The display panel according to claim 1, characterized in that: A plurality of first sub-pixels and a plurality of second sub-pixels are arranged as a whole in a square, and the numerical value of the number of first sub-pixels in the first sub-pixel column being greater than the number of second sub-pixels in the second sub-pixel column and the numerical value of the number of first sub-pixels in the first sub-pixel row being greater than the number of second sub-pixels in the second sub-pixel row are both equal to the first difference, or the numerical value of the number of second sub-pixels in the second sub-pixel column being greater than the number of first sub-pixels in the first sub-pixel column and the numerical value of the number of second sub-pixels in the second sub-pixel row being greater than the number of first sub-pixels in the first sub-pixel row are both the second difference, and the first difference and the second difference are both equal to one.

7. The display panel according to claim 6, characterized in that: When the first difference is one, each of the second sub-pixels forms four virtual pixel units with its four adjacent first sub-pixels; when the second difference is one, each of the first sub-pixels forms four virtual pixel units with its four adjacent second sub-pixels.

8. The display panel according to any one of claims 1 to 7, characterized in that: The first color light, the color light and the third color light are red light, green light and yellow light respectively.

9. A display screen, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 8.

10. A traffic signal display device, characterized in that: Including the display screen as described in claim 9, the first color light, the color light and the third color light are red light, green light and yellow light respectively, the first color display content and the second color display content are red and green circular patterns or arrow patterns corresponding to various traffic signals respectively, and the third color display content is a yellow circular pattern or arrow pattern corresponding to the traffic signal and a yellow picture or text.

Images