Display panel, display device and traffic light

Abstract

The present invention relates to a display panel, comprising: an array substrate; a pixel definition layer, the pixel definition layer having a plurality of first opening areas; a light-emitting layer, comprising sub-pixels arranged in the first opening areas; a color film structure layer, comprising a black matrix layer and a color resist layer; the sub-pixels comprising first color sub-pixels and second color sub-pixels; the black matrix layer having a second opening area corresponding to the first color sub-pixels and a third opening area corresponding to the second color sub-pixels; in a first direction, the length of the second opening area is a first length, the length of the first color sub-pixel is a second length, and the first length is less than the second length; the length of the third opening area is a third length, the length of the second color sub-pixel is a fourth length, and the third length is greater than the fourth length, so that the color displayed within a first preset viewing angle range is the first color, the color displayed within a second preset viewing angle range is the third color, and the color displayed within a third preset viewing angle range is the second color.

Description

Technical Field

[0001] The present invention relates to the technical field of display product manufacturing, and in particular to a display panel, a display device and a traffic signal lamp. Background Art

[0002] OLED display is gradually replacing LCD display and becoming the mainstream display technology due to its advantages of lightness, self-luminescence, wide viewing angle, fast response speed, low brightness and low power consumption. Currently, OLED technology has matured and its application scenarios are gradually expanding. Summary of the invention

[0003] The present invention provides a display panel, a display device and a traffic signal lamp, so as to further broaden the application scenarios of OLED display panels.

[0004] In order to achieve the above object, the technical solution adopted in the embodiment of the present invention is: a display panel, comprising:

[0005] An array substrate;

[0006] A pixel definition layer, disposed on the array substrate, wherein the pixel definition layer has a plurality of first opening areas and a non-opening area surrounding the first opening areas;

[0007] a light-emitting layer, comprising a sub-pixel disposed in the first opening area;

[0008] An encapsulation layer, located on a side of the light-emitting layer away from the array substrate;

[0009] A color filter structure layer, located on a side of the encapsulation layer away from the array substrate, the color filter structure layer comprising a black matrix layer and a color resist layer;

[0010] The sub-pixels include a first color sub-pixel and a second color sub-pixel;

[0011] The black matrix layer has a second opening area corresponding to the first color sub-pixel and a third opening area corresponding to the second color sub-pixel;

[0012] The length of the second opening area in the first direction is a first length, the length of the first color sub-pixel in the first direction is a second length, and the first length is smaller than the second length;

[0013] The length of the third opening area in the first direction is a third length, the length of the second color sub-pixel in the first direction is a fourth length, and the third length is greater than the fourth length, so that the color displayed within the first preset viewing angle range is the first color, the color displayed within the second preset viewing angle range is the third color, and the color displayed within the third preset viewing angle range is the second color;

[0014] The viewing angle when the line of sight is perpendicular to the display panel is 0 degrees, and the viewing angle when the line of sight is parallel to the display panel is 90 degrees. The viewing angle of 0-90 degrees is divided into three parts in ascending order: the first preset viewing angle range, the second preset viewing angle range, and the third preset viewing angle range.

[0015] The first direction is a row direction or a column direction of the plurality of sub-pixels.

[0016] Optionally, the orthographic projection of the second opening area on the light-emitting layer is located in the middle of the first color sub-pixel, and a center line of the second opening area in the first direction coincides with a center line of the first color sub-pixel in the first direction.

[0017] Optionally, the first length and the second length satisfy the following relationship: Wherein, a is the first length, and L is the second length.

[0018] Optionally, the length of the second opening area in the second direction is the fifth length, the length of the first color sub-pixel in the second direction is the sixth length, and the fifth length is greater than the sixth length; the length of the third opening area in the second direction is the seventh length, the length of the second color sub-pixel in the second direction is the eighth length, the seventh length is greater than the eighth length, and the second direction is perpendicular to the first direction.

[0019] Optionally, the fifth length is smaller than the sixth length.

[0020] Optionally, the orthographic projection of the second opening area on the light-emitting layer covers part of the first color sub-pixel, and the orthographic projection of the third opening area on the light-emitting layer completely covers the second color sub-pixel.

[0021] Optionally, the color resist layer includes a first color resist layer corresponding to the first color sub-pixel and a second color resist layer corresponding to the second color sub-pixel, the first color resist layer is arranged adjacent to the second color resist layer, and the first color resist layer includes a first portion filled in the second opening area and a second portion covering the black matrix layer, and the second color resist layer is arranged in the third opening area.

[0022] Optionally, the color resist layer includes a first color resist layer corresponding to the first color sub-pixel and a second color resist layer corresponding to the second color sub-pixel, the first color resist layer is arranged adjacent to the second color resist layer, and the first color resist layer includes multiple first sub-color resist layers, each of the first sub-color resist layers includes a first portion filled in the second opening area and a second portion covering the black matrix layer, and a third portion filled in part of the third opening area, and the second color resist layer is arranged in the fourth opening area between two adjacent first color resist layers.

[0023] Optionally, the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color is yellow; or, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color is yellow.

[0024] An embodiment of the present invention further provides a display device, comprising the above-mentioned display panel.

[0025] The embodiment of the present invention further provides a traffic signal light, comprising:

[0026] The display panel described above, wherein the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color is yellow; or, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, the third color is yellow, and the first direction is a horizontal direction;

[0027] A rotating frame, comprising a first surface and a second surface arranged opposite to each other, wherein the first surface and the second surface are respectively fixed with one of the display panels, and light emitting surfaces of the two display panels are arranged opposite to each other;

[0028] The bracket comprises a support rod, and two connecting rods arranged on the support rod opposite to and spaced apart from each other, wherein the extending direction of the two connecting rods is perpendicular to the extending direction of the support rod;

[0029] A rotating shaft, disposed between the rotating frame and the connecting rod;

[0030] A driving motor is connected to the rotating shaft and drives the rotating frame to rotate through the rotating shaft, so that the color change sequence observed by an observer at a preset position is green, yellow, red or red, yellow, green.

[0031] The beneficial effect of the present invention is: in this embodiment, the black matrix layer has a second opening area corresponding to the first color sub-pixel and a third opening area corresponding to the second color sub-pixel, and the second opening area and the third opening area are set differently, so as to accelerate the attenuation of the first color at a large viewing angle, and utilize the color synthesis principle to make the display panel emit light of different colors at different viewing angles, so that the display panel can be used as a traffic light, thereby broadening the application scenarios of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram showing the structure of a display panel in an embodiment of the present invention;

[0033] Figure 2 A schematic structural diagram showing a portion corresponding to the first color sub-pixel;

[0034] Figure 3 A schematic structural diagram showing a portion corresponding to the second color sub-pixel;

[0035] Figure 4 Represents the RGB brightness attenuation curve in the COE structure in the related art;

[0036] Figure 5 represents the brightness attenuation curve of the first color and the second color in this embodiment;

[0037] Figure 6 Schematic diagram of the coordinates of different colors of light at different viewing angles Figure 1 ;

[0038] Figure 7 Schematic diagram of the coordinates of different colors of light at different viewing angles Figure 2 ;

[0039] Figure 8 A schematic diagram showing the structure of a traffic signal light in this embodiment;

[0040] Fig. 9 A schematic diagram showing the structure of the rotating frame in this embodiment;

[0041] Fig.10 A schematic diagram showing the color change of a traffic light in this embodiment;

[0042] Fig.11 Schematic diagram showing the use status of the traffic light in this embodiment Figure 1 ;

[0043] Fig.12 Schematic diagram showing the use status of the traffic light in this embodiment Figure 2 .

[0044] 1 array substrate; 2 pixel definition layer; 3 light emitting layer; 31 first color sub-pixel; 32 second color sub-pixel; 411 first color resist layer; 412 second color resist layer; 42 black matrix; 421 second opening area; 422 third opening area; 5 rotation frame; 6 support rod; 7 connecting rod; 8 rotation axis; 100 display panel; 200 first preset viewing angle range; 300 second preset viewing angle range; 400 third preset viewing angle range; DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In the field of OLED (organic light-emitting diode) display, a structure that directly forms a color filter unit plus a black matrix on a thin film encapsulation layer has emerged - the COE (Color filter on EN, depolarizing film technology) structure. Display panels based on COE technology use a color filter structure layer consisting of a black matrix and a color filter unit to replace the polarizer. Since the thickness of a general polarizer is greater than 50 microns, while the thickness of the color filter structure layer is generally less than 10 microns, compared with conventional polarizer display panels, display panels based on COE technology are thinner and easier to bend or curl.

[0048] In order to reduce the reflection on the screen surface, a black matrix is ​​usually set in the COE structure, but the size of the black matrix will affect the screen's brightness at a wide viewing angle. People generally pursue higher brightness at a wide viewing angle, so there needs to be a trade-off in the size design of the black matrix. Figure 1-Figure 3 In order to broaden the application scenarios of OLED display panels, a display panel is provided in this embodiment, including:

[0049] An array substrate 1;

[0050] A pixel definition layer 2 is disposed on the array substrate 1, and the pixel definition layer 2 has a plurality of first opening areas and non-opening areas surrounding the first opening areas;

[0051] The light-emitting layer 3 includes a sub-pixel disposed in the first opening area;

[0052] An encapsulation layer, located on a side of the light-emitting layer 3 away from the array substrate 1;

[0053] A color filter structure layer, located on a side of the encapsulation layer away from the array substrate 1, the color filter structure layer comprising a black matrix layer 42 and a color resist layer;

[0054] The sub-pixels include a first color sub-pixel 31 and a second color sub-pixel 32;

[0055] The black matrix layer 42 has a second opening area 421 corresponding to the first color sub-pixel 31 and a third opening area 422 corresponding to the second color sub-pixel 32;

[0056] The length of the second opening area 421 in the first direction is a first length, the length of the first color sub-pixel 31 in the first direction is a second length, and the first length is smaller than the second length;

[0057] The length of the third opening area 422 in the first direction is a third length, the length of the second color sub-pixel 32 in the first direction is a fourth length, and the third length is greater than the fourth length, so that the color displayed within the first preset viewing angle range is the first color, the color displayed within the second preset viewing angle range is the third color, and the color displayed within the third preset viewing angle range is the second color;

[0058] The viewing angle when the sight line direction is perpendicular to the display panel is 0 degrees, and the viewing angle when the sight line direction is parallel to the display panel 100 is 90 degrees, and 0-90 degrees are divided into three parts in ascending order: the first preset viewing angle range, the second preset viewing angle range, and the third preset viewing angle range;

[0059] The first direction is a row direction or a column direction of the plurality of sub-pixels.

[0060] In this embodiment, the display panel includes a first color sub-pixel 31 and a second color sub-pixel 32, the second length of the first color sub-pixel 31 in the first direction is the same as the fourth length of the second color sub-pixel 32 in the first direction, the black matrix layer 42 has a second opening area 421 corresponding to the first color sub-pixel 31 and a third opening area 422 corresponding to the second color sub-pixel 32, the second opening area 421 and the third opening area 422 are differentially arranged, that is, the first length of the second opening area 421 in the first direction is less than the second length, and the third length of the third opening area 422 in the first direction is greater than the fourth length, so that the attenuation of the light of the first color at a large viewing angle can be increased, and the color synthesis principle is used to enable the display panel to display light of different colors at different viewing angles, specifically, the color displayed within the first preset viewing angle range is the first color, the color displayed within the second preset viewing angle range is the third color, and the color displayed within the third preset viewing angle range is the second color, wherein the third color is a color synthesized by the first color and the second color, for example, the first color is red, the second color is green, and the third color is yellow.

[0061] Figure 4 The figure shows the brightness attenuation curve of the RGB pixels in the COE structure in the related art. Due to the microcavity effect and the influence of the black matrix shading (the opening area of ​​the black matrix corresponding to the sub-pixels of different colors is set the same), the brightness of the RGB pixels will decay as the viewing angle increases, but the brightness attenuation ratio of the RGB pixels is almost the same, so Figure 4 The composite color shown in does not change color at 0-70° viewing angle. Figure 5 The luminance attenuation curves of the first color sub-pixel and the second color sub-pixel in this embodiment are shown, wherein curve 10 shows the luminance attenuation curve of the first color sub-pixel, and curve 20 shows the luminance attenuation curve of the second color sub-pixel. Taking the first color sub-pixel 31 as a red sub-pixel and the second color sub-pixel 32 as a green sub-pixel as an example, the second opening area 421 corresponding to the red sub-pixel has no effect on the display color of the display panel at the normal viewing angle after the differentiated design. At a large viewing angle, such as 45°, the luminance of the red sub-pixel has decayed to 0. At this time, the composite color displayed by the display panel has no contribution from the red sub-pixel, and the composite picture is only contributed by the green sub-pixel. Reference Figure 6 ,exist Figure 6 The synthetic colors of the display panel at 0°, 35°, and 45° viewing angles can be obtained. Obviously, the colors of the pictures are completely different. They are displayed as red at a viewing angle of 0 degrees, yellow at a viewing angle of 35 degrees, and green at a viewing angle of 45 degrees. The color coordinates are as follows:

[0062]

[0063] Draw the color change trajectory of the viewing angle on the CIE1931 coordinate diagram (reference Figure 6 ) can intuitively see the change of the color of the display screen as the viewing angle changes. The color displayed on the display screen changes from red to green to yellow within a viewing angle of 0-80°. If the first color is green and the second color is red, the color change displayed by the display panel 100 as the viewing angle increases can be referred to Figure 7 , the color changes from green to yellow to red at a viewing angle of 0-80°.

[0064] In summary, by adopting the above technical solution, the display panel can be applied to traffic lights. The display panel is placed at a crossroads, and the viewing angle of the vehicle is changed by rotating the display panel, so that the switching of red, green and yellow signals can be realized. Fig.11 and Fig.12 .

[0065] Exemplarily, the orthographic projection of the second opening area 421 on the light-emitting layer 3 is located in the middle of the first color sub-pixel 31 , and the center line of the second opening area 421 in the first direction coincides with the center line of the first color sub-pixel 31 in the first direction.

[0066] In this embodiment, the second opening area 421 is provided to increase the attenuation of the light of the first color at a wide viewing angle. The above scheme is adopted to make the light output on both sides of the center line of the first color sub-pixel 31 in the first direction symmetrical.

[0067] Exemplarily, the first length and the second length satisfy the following relationship: Wherein, a is the first length, and L is the second length.

[0068] The relationship between the first length a and the second length L is related to the settings of the first preset viewing angle range, the second preset viewing angle range and the third preset viewing angle range, and is not limited to the above. Figure 1 In this embodiment, refer to Fig.10 The first preset viewing angle range 200 is 0-15 degrees, the second preset viewing angle range 300 is 15-40 degrees, and the third preset viewing angle range 400 is 40-90 degrees.

[0069] refer to Figure 2 and Figure 3Exemplarily, the length of the second opening area 421 in the second direction is the fifth length, the length of the first color sub-pixel 31 in the second direction is the sixth length, and the fifth length is greater than the sixth length; the length of the third opening area 422 in the second direction is the seventh length, the length of the second color sub-pixel 32 in the second direction is the eighth length, and the seventh length is greater than the eighth length, and the second direction is perpendicular to the first direction.

[0070] refer to Figure 1 Exemplarily, the orthographic projection of the second opening area 421 on the light-emitting layer 3 covers part of the first color sub-pixel 31 , and the orthographic projection of the third opening area 422 on the light-emitting layer 3 completely covers the second color sub-pixel 32 .

[0071] In order to reduce the reflection of the screen surface (reflection of external light), a black matrix (i.e., the black matrix layer 42) is usually provided in the COE structure, but the size of the black matrix will affect the wide viewing angle brightness of the screen. People generally pursue higher wide viewing angle brightness, so the size design of the black matrix needs to be balanced. The following introduces two configuration methods in this embodiment.

[0072] Exemplarily, the color resist layer includes a first color resist layer 411 corresponding to the first color sub-pixel 31 and a second color resist layer 412 corresponding to the second color sub-pixel 32, the first color resist layer 411 is arranged adjacent to the second color resist layer 412, and the first color resist layer 411 includes a first portion filled in the second opening area 421 and a second portion covering the black matrix layer 42, and the second color resist layer 412 is arranged in the third opening area 422.

[0073] Exemplarily, the color resist layer includes a first color resist layer 411 corresponding to the first color sub-pixel 31 and a second color resist layer 412 corresponding to the second color sub-pixel 32, the first color resist layer 411 is arranged adjacent to the second color resist layer 412, and the first color resist layer 411 includes multiple first sub-color resist layers, each of the first sub-color resist layers includes a first portion filled in the second opening area 421 and a second portion covering the black matrix layer 42, and a third portion filled in part of the third opening area 422, and the second color resist layer 412 is arranged in the fourth opening area between two adjacent first color resist layers 411.

[0074] Exemplarily, the first color sub-pixel 31 is a red sub-pixel, the second color sub-pixel 32 is a green sub-pixel, and the third color is yellow; or, the first color sub-pixel 31 is a green sub-pixel, the second color sub-pixel 32 is a red sub-pixel, and the third color is yellow. In this way, the display panel 100 can be applied to traffic lights, but is not limited to this.

[0075] An embodiment of the present invention further provides a display device, comprising the above-mentioned display panel.

[0076] refer to Figure 8 , an embodiment of the present invention further provides a traffic signal light, comprising:

[0077] The display panel 100, wherein the first color sub-pixel 31 is a red sub-pixel, the second color sub-pixel 32 is a green sub-pixel, and the third color is yellow; or, the first color sub-pixel 31 is a green sub-pixel, the second color sub-pixel 32 is a red sub-pixel, the third color is yellow, and the first direction is a horizontal direction;

[0078] The rotating frame 5 comprises a first surface and a second surface which are arranged opposite to each other, wherein the first surface and the second surface are respectively fixed with one of the display panels 100, and light emitting surfaces of the two display panels 100 are arranged opposite to each other;

[0079] The bracket comprises a support rod 6, and two connecting rods 7 arranged on the support rod 6 opposite to and spaced apart from each other, wherein the extending direction of the two connecting rods 7 is perpendicular to the extending direction of the support rod 6;

[0080] A rotating shaft 8 is disposed between the rotating frame 5 and the connecting rod 7;

[0081] The driving motor is connected to the rotating shaft 8 and drives the rotating frame 5 to rotate through the rotating shaft 8, so that the color change sequence observed by an observer at a preset position is green, yellow, red or red, yellow, green.

[0082] The specific structural form of the rotating frame 5 can be various. Fig. 9 The figure shows a schematic diagram of the structure of a rotating frame 5 in one implementation of the present embodiment, wherein the rotating frame 5 includes a main body, a first groove arranged on the first surface of the main body, and a second groove arranged on the second surface, wherein the first groove and the second groove respectively accommodate a display panel 100.

[0083] The image displayed by the display panel 100 may be a circle, an indicating arrow, etc., but is not limited thereto.

[0084] refer to Fig.11 , Fig.11 The figure shows the traffic light images observed by vehicles at positions ABCD. The initial position of the plane of the traffic light rotation frame 5 has an angle α of 45° (or other angles) with the central axis CD of the road. At this time, the angle θ1 between the vehicle at positions AB and the perpendicular line of the traffic light plane is in the range of 0-15° (the first color is red, the second color is green, and the third color is yellow). The color of the traffic light seen at positions AB is red. At this time, the angle θ2 between the vehicle at position CD and the perpendicular line of the traffic light plane is in the range of 45-90°. The color of the traffic light seen at position CD is green. Subsequently, the traffic light starts to rotate and the angle α gradually increases. The angle θ1 changes from 0 to 90°. The color of the traffic light observed at positions AB changes from red to yellow to green. The angle θ2 changes from 90 to 0°. The color of the traffic light observed at positions CD changes from green to yellow to red. When the traffic light rotates to the final position, the traffic light images observed by vehicles at positions ABCD are as follows: Fig.12 .

[0085] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display panel, comprising: An array substrate; A pixel definition layer, disposed on the array substrate, wherein the pixel definition layer has a plurality of first opening areas and a non-opening area surrounding the first opening areas; a light-emitting layer, comprising a sub-pixel disposed in the first opening area; An encapsulation layer, located on a side of the light-emitting layer away from the array substrate; The color filter structure layer is located on a side of the encapsulation layer away from the array substrate, and the color filter structure layer includes a black matrix layer and a color resist layer; characterized in that: The sub-pixels include a first color sub-pixel and a second color sub-pixel; The black matrix layer has a second opening area corresponding to the first color sub-pixel and a third opening area corresponding to the second color sub-pixel; The length of the second opening area in the first direction is a first length, the length of the first color sub-pixel in the first direction is a second length, and the first length is smaller than the second length; The length of the third opening area in the first direction is a third length, the length of the second color sub-pixel in the first direction is a fourth length, and the third length is greater than the fourth length, so that the color displayed within the first preset viewing angle range is the first color, the color displayed within the second preset viewing angle range is the third color, and the color displayed within the third preset viewing angle range is the second color; The viewing angle when the sight line direction is perpendicular to the display panel is 0 degrees, and the viewing angle when the sight line direction is parallel to the display panel is 90 degrees, and 0-90 degrees are divided into three parts in ascending order: the first preset viewing angle range, the second preset viewing angle range, and the third preset viewing angle range; The first direction is a row direction or a column direction of the plurality of sub-pixels.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the second opening area on the light-emitting layer is located in the middle of the first color sub-pixel, and a center line of the second opening area in the first direction coincides with a center line of the first color sub-pixel in the first direction.

3. The display panel according to claim 1, characterized in that: The first length and the second length satisfy the following relationship: Wherein, a is the first length, and L is the second length.

4. The display panel according to claim 1, characterized in that: The length of the second opening area in the second direction is the fifth length, the length of the first color sub-pixel in the second direction is the sixth length, and the fifth length is greater than the sixth length; the length of the third opening area in the second direction is the seventh length, the length of the second color sub-pixel in the second direction is the eighth length, and the seventh length is greater than the eighth length, and the second direction is perpendicular to the first direction.

5. The display panel according to claim 4, characterized in that: The fifth length is smaller than the sixth length.

6. The display panel according to claim 1, characterized in that: The orthographic projection of the second opening area on the light-emitting layer covers a portion of the first color sub-pixel, and the orthographic projection of the third opening area on the light-emitting layer completely covers the second color sub-pixel.

7. The display panel according to claim 1, characterized in that: The color resist layer includes a first color resist layer corresponding to the first color sub-pixel and a second color resist layer corresponding to the second color sub-pixel, the first color resist layer is arranged adjacent to the second color resist layer, and the first color resist layer includes a first portion filled in the second opening area and a second portion covering the black matrix layer, and the second color resist layer is arranged in the third opening area.

8. The display panel according to claim 1, characterized in that: The color resist layer includes a first color resist layer corresponding to the first color sub-pixel and a second color resist layer corresponding to the second color sub-pixel, the first color resist layer is arranged adjacent to the second color resist layer, and the first color resist layer includes multiple first sub-color resist layers, each of the first sub-color resist layers includes a first portion filled in the second opening area, a second portion covered on the black matrix layer, and a third portion filled in part of the third opening area, and the second color resist layer is arranged in the fourth opening area between two adjacent first color resist layers.

9. The display panel according to claim 1, characterized in that: The first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color is yellow; or the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, and the third color is yellow.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

11. A traffic signal light, characterized in that: include: The display panel according to any one of claims 1 to 9, wherein the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color is yellow; or, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a red sub-pixel, the third color is yellow, and the first direction is a horizontal direction; A rotating frame, comprising a first surface and a second surface arranged opposite to each other, wherein the first surface and the second surface are respectively fixed with one of the display panels, and light emitting surfaces of the two display panels are arranged opposite to each other; The bracket comprises a support rod, and two connecting rods arranged on the support rod opposite to and spaced apart from each other, wherein the extending direction of the two connecting rods is perpendicular to the extending direction of the support rod; A rotating shaft, disposed between the rotating frame and the connecting rod; A driving motor is connected to the rotating shaft and drives the rotating frame to rotate through the rotating shaft, so that the color change sequence observed by an observer at a preset position is green, yellow, red or red, yellow, green.

Images