CN110729332A - Display panel and display device - Google Patents
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- CN110729332A CN110729332A CN201910950098.XA CN201910950098A CN110729332A CN 110729332 A CN110729332 A CN 110729332A CN 201910950098 A CN201910950098 A CN 201910950098A CN 110729332 A CN110729332 A CN 110729332A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The invention provides a display panel and a display device, wherein the display panel comprises: a first display area and a second display area; a light emitting unit including a red sub-pixel, a green sub-pixel, and a blue sub-pixel; in the first display area, the opening area of the red sub-pixel is A ', the opening area of the green sub-pixel is B ', and the opening area of the blue sub-pixel is C '; in the second display area, the opening area of the red sub-pixel is A, the opening area of the green sub-pixel is B, and the opening area of the blue sub-pixel is C, wherein A is less than or equal to C, and B is less than or equal to C; wherein A '< A, B' < B, (A-A ')/A > (C-C')/C, (B-B ')/B > (C-C')/C. For reducing the difference in luminance attenuation of the respective sub-pixels in the region corresponding to the opto-electronic element within the display area.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Organic Light-Emitting Diode (OLED) devices have the advantages of simple structure, fast response speed, active Light emission, low power consumption, and the like, and have been widely applied to the display fields of mobile phones, flat panels, televisions, and the like.
In order to realize a full-screen display, as shown in fig. 1, an area 1 where display is also performed is generally provided in the display area of the OLED display device, and an optical electronic element 100 (e.g., a camera) is provided in the area 1. In the prior art, in order to ensure that the optical electronic element 100 can receive a sufficient amount of light, the transmittance of the region 1 is often required to be increased. When the transmittance of the region 1 is increased by decreasing the pixel density of the region 1, it is often necessary to ensure the luminance uniformity between the region 1 and the other display regions (i.e., the region 2) other than the region 1 by increasing the current density of the region 1. However, due to the characteristics of the material of the sub-pixels themselves in region 1, the lifetime of the blue sub-pixel is the shortest compared to the lifetime of the red sub-pixel and the lifetime of the green sub-pixel. Accordingly, the luminance of the blue sub-pixel decays faster, resulting in a problem of color shift or the like in the region 1.
Therefore, the prior art has the technical problem that the brightness attenuation difference of each sub-pixel in the area corresponding to the optical electronic element in the display area is large.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for reducing the brightness attenuation difference of each sub-pixel in the area corresponding to an optical electronic element in a display area.
In a first aspect, an embodiment of the present invention provides a display panel, including:
a first display area and a second display area;
a light emitting unit including a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
in the first display area, the opening area of the red sub-pixel is A ', the opening area of the green sub-pixel is B ', and the opening area of the blue sub-pixel is C ';
in the second display area, the opening area of the red sub-pixel is A, the opening area of the green sub-pixel is B, and the opening area of the blue sub-pixel is C, wherein A is less than or equal to C, and B is less than or equal to C;
wherein A '< A, B' < B, (A-A ')/A > (C-C')/C, (B-B ')/B > (C-C')/C.
In a second aspect, an embodiment of the present invention provides a display device, including the display panel according to the first aspect.
The invention has the following beneficial effects:
in the display panel provided in the embodiment of the invention, the aperture area a 'of the red sub-pixel in the first display area is smaller than the aperture area a of the red sub-pixel in the second display area, and the aperture area B' of the green sub-pixel in the first display area is smaller than the aperture area B of the green sub-pixel in the second display area. Furthermore, the relationship between the aperture areas of the same-color sub-pixels in the second display region compared with the aperture areas of the same-color sub-pixels in the first display region is (A-A ')/A > (C-C ')/C, (B-B ')/B > (C-C ')/C, where A is not more than C, B is not more than C, C is the aperture area of the blue sub-pixel in the second display region, and C ' is the aperture area of the blue sub-pixel in the first display region. That is, the ratio of the difference between the opening area of the red sub-pixel in the second display region and the opening area of the red sub-pixel in the first display region to the opening area of the red sub-pixel in the second display region is a first ratio; the ratio of the difference value of the opening area of the green sub-pixel in the second display area to the opening area of the green sub-pixel in the first display area to the opening area of the green sub-pixel in the second display area is a second ratio; the ratio of the difference value of the opening area of the blue sub-pixel in the second display area and the opening area of the blue sub-pixel in the first display area to the opening area of the blue sub-pixel in the second display area is a third ratio; the first ratio is greater than the third ratio, and the second ratio is greater than the third ratio. Therefore, under the condition that the opening areas of the red sub-pixel and the green sub-pixel in the first display area are respectively smaller than the opening areas of the corresponding sub-pixels with the same color in the second display area, the opening area of the blue sub-pixel in each color sub-pixel in the first display area is relatively larger, and the service life of the blue sub-pixel is prolonged by relatively increasing the opening area of the blue sub-pixel in the first display area, so that the brightness attenuation difference of the red sub-pixel, the green sub-pixel and the blue sub-pixel in the first display area is reduced. That is, the difference in luminance attenuation of each sub-pixel in the region corresponding to the optoelectronic element within the display area is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a display device in the related art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic top view of the area G in the display area shown in FIG. 2;
fig. 4-14 are schematic structural diagrams of a first display area and a second display area in a display panel according to an embodiment of the present invention;
FIG. 15 is a schematic top view of the area G in the display area shown in FIG. 2;
fig. 16 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 17 is a schematic top view of the region H shown in FIG. 16;
FIG. 18 is a schematic top view of the region H shown in FIG. 16;
fig. 19 is a schematic structural diagram of another display panel according to an embodiment of the invention;
FIG. 20 is a schematic top view of the region Q of FIG. 19;
fig. 21 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document generally indicates that the preceding and following related objects are in an "or" relationship unless otherwise specified.
In addition, it should be understood that the terms first, second, etc. in the description of the embodiments of the invention are used for distinguishing between the descriptions and are not intended to indicate or imply relative importance or order to be construed.
It should be understood that the preferred embodiments described below are only for illustrating and explaining the present invention and are not to be used for limiting the present invention. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict. Also, the shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the present invention.
In practical applications, the pixel density of the light-emitting units in the region 1 can be set to be less than the pixel density of the light-emitting units in the other regions 2 except the region 1 in the display region, so as to increase the area of the light-transmitting region in the region 1, thereby ensuring that the optoelectronic device 100 receives a sufficient amount of light. Here, the pixel density refers to the number of light emitting cells uniformly arranged in a unit area.
In practical applications, since the number of light emitting cells uniformly arranged in a unit area in the region 1 is smaller than the number of light emitting cells uniformly arranged in a unit area in the region 2, in the case where the luminance of the light emitting cells in the two regions is the same, the luminance of the region 1 is lower than that of the region 2. In order to improve the luminance uniformity of the regions 1 and 2, the current density of the region 1 is often required to be increased. However, due to the material properties of the luminescent material itself in the sub-pixels of different colors in region 1, the lifetime of the blue luminescent material is the shortest compared to the lifetime of the red luminescent material and the lifetime of the green luminescent material. Once the current density of the area 1 is increased, the luminance of the blue sub-pixel is rapidly attenuated in a short time, while the luminance of the red sub-pixel and the green sub-pixel still maintain a higher level, and because the current density of the area 1 is relatively higher than that of the area 2, and because the current density is increased, the difference of the luminance attenuation of the sub-pixels of different colors in the area 1 is more obvious, so that the difference of the display luminance of the sub-pixels in the area 1 is larger.
In the experiment of simulating the brightness attenuation of the sub-pixels with different colors, the applicant of the invention finds that when the brightness of the sub-pixels with different colors is attenuated to 95% of the brightness of the same color which is originally corresponding to the sub-pixels with different colors, the time required by the red sub-pixel is longer than that required by the green sub-pixel and the blue sub-pixel, which is consistent with the characteristics of the luminescent materials with different colors.
Therefore, embodiments of the present invention provide a display panel and a display device for reducing the brightness attenuation difference of each sub-pixel in the area corresponding to the optoelectronic device in the display area.
Referring to fig. 2 and fig. 3, a display panel according to an embodiment of the present invention includes a first display area 11 and a second display area 12, where the first display area 11 is a region corresponding to the optoelectronic device in the display area 10 and capable of displaying, and the second display area 12 is another display area in the display area 10 except for the first display area 11. The display area 11 and the second display area 12 of the display panel respectively include a light emitting unit 1000, and the light emitting unit 1000 includes a red subpixel 1001, a green subpixel 1002, and a blue subpixel 1003. In the first display region 11, the aperture area of the red sub-pixel 1001 is a ', the aperture area of the green sub-pixel 1002 is B ', and the aperture area of the blue sub-pixel 1003 is C '; in the second display area 12, the aperture area of the red sub-pixel 1001 is a, the aperture area of the green sub-pixel 1002 is B, and the aperture area of the blue sub-pixel 1003 is C, wherein a is not more than C, and B is not more than C; wherein A '< A, B' < B, (A-A ')/A > (C-C')/C, (B-B ')/B > (C-C')/C. Fig. 3 is a schematic top view of a region G (a region corresponding to a dashed line frame) in the display region 10 in fig. 2. It should be noted that the aperture area of a sub-pixel is specifically the area of the light emitting region of the sub-pixel, and the aperture area of the sub-pixel is proportional to the aperture ratio of the corresponding sub-pixel, where the aperture ratio of the sub-pixel is specifically the ratio of the area of the light emitting region of the sub-pixel in the light emitting unit 1000 to the area of the whole light emitting unit 1000.
In a specific application, the ratio of the difference between the opening area of the red sub-pixel 1001 in the second display area 12 and the opening area of the red sub-pixel 1001 in the first display area 11 to the opening area of the red sub-pixel 1001 in the second display area 12 is a first ratio; the ratio of the difference between the opening area of the green sub-pixel 1002 in the second display region 12 and the opening area of the green sub-pixel 1002 in the first display region 11 to the opening area of the green sub-pixel 1002 in the second display region 12 is a second ratio; the ratio of the difference between the aperture area of the blue sub-pixel 1003 in the second display region 12 and the aperture area of the blue sub-pixel 1003 in the first display region 11 to the aperture area of the blue sub-pixel 1003 in the second display region 12 is a third ratio; the first ratio is greater than the third ratio, and the second ratio is greater than the third ratio. Therefore, under the condition that the aperture areas of the red sub-pixel 1001 and the green sub-pixel 1002 in the first display area 11 are respectively smaller than the aperture areas of the corresponding same-color sub-pixels in the second display area 12, the aperture area of the blue sub-pixel 1003 in each color sub-pixel in the first display area 11 is relatively larger, and the life of the blue sub-pixel 1003 is increased by relatively increasing the aperture area of the blue sub-pixel 1003 in the first display area 11, so that the luminance attenuation difference of the red sub-pixel 1001, the green sub-pixel 1002 and the blue sub-pixel 1003 in the first display area 11 is reduced. That is, the difference in luminance attenuation of each sub-pixel in the region corresponding to the optoelectronic element within the display area 10 is reduced.
With continued reference to fig. 3, in the first display region 11 comprising the red sub-pixel 1001, the green sub-pixel 1002 and the blue sub-pixel 1003, the law of the aperture areas of the sub-pixels in the first display region 11 can be understood as that the aperture areas of the sub-pixels of the respective colors are varied with respect to the second display region 12 to different extents, wherein (a-a ')/a > (C-C')/C, (B-B ')/B > (C-C')/C, that is, the aperture area of the red sub-pixel 1001 is relatively reduced more, the aperture area of the blue sub-pixel 1003 is relatively reduced less or not changed or increased, so as to increase the difference of the aperture areas of the blue sub-pixel 1003 and the red sub-pixel 1001 or the green sub-pixel 1002, to balance the problem of the excessively fast luminance degradation due to the lifetime of the blue luminescent material, and to improve the color shift of the display panel through such balance, the user experience is improved.
In the embodiment of the present invention, both the first display area 11 and the second display area 12 may display images. Illustratively, the display area 10 is substantially rectangular in shape, for example, if the corners of the display area 10 are all right angles, the display area is rectangular. For another example, if the top corner of the display area 10 is an arc-shaped corner, the display area 10 is substantially rectangular.
In the embodiment of the present invention, the first display area 11 may be one or more. The second display area 12 may be a continuous area, or the second display area 12 may also be a discontinuous area, and a person skilled in the art may design the specific address according to an application environment of the actual display panel, which is not limited herein.
In the embodiment of the present invention, as shown in fig. 3, the pixel density of the light emitting unit 1000 of the first display region 11 is less than the pixel density of the light emitting unit 1000 of the second display region 12. In this way, the display area 10 is disposed as the second display area 12 with a large pixel density and the first display area 11 with a small pixel density, and the transmittance of the first display area 11 is relatively high due to the small pixel density in the first display area 11, so that when the optoelectronic device is disposed in the first display area 11, the amount of light received by the optoelectronic device is increased, and the performance of the optoelectronic device is improved.
In the embodiment of the present invention, as shown in fig. 4 to 12, at least a part of the edge of the first display region 11 coincides with at least a part of the edge of the display region 10, and the remaining part of the first display region 11 is surrounded by the second display region 12. In this way, the first display region 11 can be disposed at the edge of the display region 10.
In the embodiment of the present invention, as shown in fig. 13 and 14, the second display area 12 is disposed to surround the first display area 11. In this way, the first display region 11 can be disposed inside the display region 10.
In a specific implementation, the shape of the first display area 11 may be set to a regular shape, for example, as shown in fig. 4 to 6, the shape of the first display area 11 is set to a rectangle. The vertex angle of the rectangle can be a right angle or an arc angle. As shown in fig. 7, the shape of the first display region 11 may be set to be a trapezoid (e.g., an inverted trapezoid). The top angle of the trapezoid can be a regular included angle or an arc-shaped angle. As shown in fig. 13 to 14, the shape of the first display area 11 may be set to be circular, or the shape of the first display area 11 may be set to be irregular. For example, as shown in fig. 8, the first display region 11 may be shaped in a drop shape. Of course, in practical applications, the shape of the first display area 11 may be designed according to the shape of the optical electronic element disposed in the first display area 11, and is not limited herein.
In the embodiment of the present invention, the relative position relationship and the shape of the first display area 11 and the second display area 12 are not limited, and may be specifically set according to the screen design of the display device. Taking a mobile phone as an example, as shown in fig. 4, the first display area 11 may be disposed at the upper left corner of the display area 10. As shown in fig. 5, the first display area 11 may be disposed at the upper right corner of the display area 10. The camera is arranged at the corner, and simple and quick function services such as time display, weather and information reminding can be carried out by utilizing the first display area 11. As shown in fig. 6 to 8, the first display area 11 may be disposed at an upper middle position of the display area 10. As shown in fig. 9 and 10, the first display area 11 and the second display area 12 may be arranged in a row direction. Wherein the first display region 11 may be positioned at an upper side or a lower side of the second display region 12. As shown in fig. 11 and 12, the first display area 11 and the second display area 12 may be arranged in a column direction. Wherein the first display area 11 may be positioned at the left or right side of the second display area 12. As shown in fig. 13, the first display area 11 may be disposed in the middle of the display area 10. As shown in fig. 14, the first display area 11 is disposed at a corner (e.g., upper right corner) of the display area 10. In this way, it is also possible to provide optical and electronic components, such as a sensor for face recognition (for example, an infrared sensor or the like), for example, a camera, in the area of the first display area 11. Of course, in practical applications, the specific position of the first display area 11 may be determined according to practical application environments, and is not limited herein.
In the embodiment of the invention, in the second display 12 area, the aperture area of the red sub-pixel 1001 is a, the aperture area of the green sub-pixel 1002 is B, and the aperture area of the blue sub-pixel 1003 is C, where a is less than or equal to C and B is less than or equal to C. In a specific implementation, the aperture areas of the sub-pixels of different colors in the second display area 12 may be equal (i.e., a ═ B ═ C), and may also be unequal a < C and B < C (e.g., a ═ B < C). In a specific implementation process, the aperture area C of the blue sub-pixel 1003 in the second display area 12 may be set to be larger than the aperture area a of the red sub-pixel 1001 and the aperture area B of the green sub-pixel 1002, so that the lifetime of each sub-pixel in the second display area 12 may be balanced to some extent.
In the embodiment of the present invention, the aperture area a 'of the red sub-pixel 1001 in the first display area 11 is smaller than the aperture area a of the red sub-pixel 1001 in the second display area 12, and the aperture area B' of the green sub-pixel 1002 in the first display area 11 is smaller than the aperture area B of the green sub-pixel 1002 in the second display area 12, when C 'is less than or equal to C, that is, the aperture area C' of the blue sub-pixel 1003 in the first display area 11 is less than or equal to the aperture area C of the blue sub-pixel 1003 in the second display area 12. Since A '< A, B' < B, (A-A ')/A > (C-C')/C, (B-B ')/B > (C-C')/C, A ≦ C, B ≦ C, the first ratio is greater than the third ratio, and the second ratio is greater than the third ratio, the difference in luminance decay of the sub-pixels in the first display region 11 is balanced, and the difference in luminance decay of the sub-pixels in the first display region 11 is reduced.
In the specific implementation process, still taking the display panel shown in fig. 2 and fig. 3 as an example, the current density of the second display area 12 is I, the opening areas of the red sub-pixel 1001, the green sub-pixel 1002, and the blue sub-pixel 1003 are A, B, C respectively, where C > a, C > B, and at this time, the luminance decay rate of each sub-pixel in the second display area 12 is not much different. The current density of the first display region 11 is NI (N is greater than 1), and the opening areas of the red sub-pixel 1001, the green sub-pixel 1002, and the blue sub-pixel 1003 are a ', B ', and C ', respectively, where C ═ C, B ═ B, and a:. It is possible to define that the opening areas B ' and a ' are reduced more than C ' in the sub-pixels in the first display region 11 than in the sub-pixels of the same color in the second display region 12. Therefore, the brightness attenuation difference of each sub-pixel in the first display area 11 is reduced, and the display effect of the display panel is improved.
In the embodiment of the present invention, the first display area 11 and the second display area 12 are the sameThe proportional relationship between the opening areas of the sub-pixels of the same color is A '/A ═ a, B '/B ═ B, and C '/C ═ C, wherein 0.8<a<1，0.8<b<1，0.8<c≤1，a<c，b<c, e.g. 1200 μm for a ═ B2，C＝2000μm2，A’＝B’＝1080μm2，C’＝2000μm2In this way, when the current density of the first display area 11 is increased compared with the current density of the second display area 12, the problem of inconsistent attenuation caused by the luminescent materials of different colors is balanced by adjusting the opening areas of the sub-pixels of different colors, the luminance attenuation of the blue sub-pixel 1003 can be less different from the luminance attenuation of the red sub-pixel 1001 and the blue sub-pixel 1003, so that the display effect of the display panel is improved, and meanwhile, the ratio relationship between the opening areas of the sub-pixels of the same color in the first display area 11 and the second display area 12 is controlled within the range, and through simulation experiments by the applicant, the problem of luminance attenuation caused by different service lives of the luminescent materials of different colors can be balanced without causing display problems.
In some alternative embodiments, the width-to-length ratio of the driving transistors in the driving circuits connected to the sub-pixels of any one color of the light emitting unit 1000 of the first display region 11 is greater than the width-to-length ratio of the driving transistors in the driving circuits connected to the sub-pixels of any one color of the light emitting unit of the second display region 12. In this way, the larger the width-to-length ratio of the driving transistor in the driving circuit is, the faster the carrier transfer rate is, and the larger the width-to-length ratio of the driving transistor in the same time period, the larger the light emitting luminance of the driving circuit. Compared with the second display area 12, the width and length of the driving transistor in the driving circuit connected to the same color sub-pixel in the first display area 11 are larger, so that the luminance of the light emitting unit 1000 of the first display area 11 is improved, and the luminance uniformity between the first display area 11 and the second display area 12 is ensured.
In a specific implementation, in the first display region 11, the width-to-length ratio of the driving transistor in the driving circuit connected to the blue sub-pixel 1003 is greater than the width-to-length ratio of the driving transistor in the driving circuit connected to the red sub-pixel 1001, and the width-to-length ratio of the driving transistor in the driving circuit connected to the red sub-pixel 1001 is greater than the width-to-length ratio of the driving transistor in the driving circuit connected to the green sub-pixel 1002. Because human eyes are sensitive to green, red and blue, the width-to-length ratio of the driving transistor in the driving circuit connected with the blue sub-pixel 1003 is set to be the maximum, the display effect of the display device can be improved, and the use experience of a user is improved.
In some alternative embodiments, as shown in fig. 15, another schematic top view structure diagram of the region G in the display area 10 shown in fig. 2 is shown. In a specific implementation process, in the second display area 12, the light emitting units 1000 are arranged in an array along a first direction and a second direction, the first direction intersects with the second direction, and the light emitting unit 1000 includes one red sub-pixel 1001, one green sub-pixel 1002, and two blue sub-pixels 1003. The red subpixel 1001 and the green subpixel 1002 are arranged in the first direction, and the two blue subpixels 1003 are arranged in the first direction; in fig. 15, arrow E represents the first direction and arrow F represents the second direction. In a specific implementation, the relationship between the aperture areas of the sub-pixels in the second display region 12 may be equal to each other, i.e., a ═ B ═ C. It may also be unequal to each other, e.g., a < C, B < C, and further e.g., a ═ B < C. For example, in the second display region 12 shown in fig. 15, the aperture areas of the red sub-pixel 1001, the green sub-pixel 1002, and the blue sub-pixel 1003 are equal to each other, that is, a ═ B ═ C.
In a specific implementation process, as also shown in fig. 15, in the first display area 11, the light emitting units 1000 are arranged in an array along the first direction and the second direction, each light emitting unit 1000 includes a red sub-pixel 1001, a green sub-pixel 1002, and a blue sub-pixel 1003, the red sub-pixel 1001 and the green sub-pixel 1002 are arranged along the first direction, the blue sub-pixel 1003 is located on the same side of the red sub-pixel 1001 and the green sub-pixel 1002, and the blue sub-pixel 1003 extends along the first direction. In the first display region 11 shown in fig. 15, the aperture area of the red sub-pixel 1001 is smaller than that of the green sub-pixel 1002, and both are smaller than those of the blue sub-pixel 1003. Namely a ' < B ' < C '. The opening area of the sub-pixel in the first display region 11 is a ' < a, B ' < B, C ' > C, compared with the opening area of the sub-pixel of the corresponding color in the second display region 12. In fig. 15, the light-transmitting area in the first display area 11 is D, and the transmittance of the first display area 11 is high, so that the sufficient light quantity received by the optical electronic element is ensured, and the usability of the display panel is improved.
In a specific implementation, the specific relationship between the aperture area of the blue sub-pixel 1003 in the first display region 11 and the second display region 12 is C < C' ≦ 2C. When C' is 2C, the aperture area of the blue subpixel 1003 in the first display region 11 is 2 times the aperture area of the blue subpixel 1003 in the second display region 12. At C' <2C, the aperture area of the blue sub-pixel 1003 in the first display region 11 is smaller than 2 times the aperture area of the blue sub-pixel 1003 in the second display region 12, as if the aperture areas of two adjacent blue sub-pixels arranged in the first direction in the second display region 12 were reduced by a certain ratio, and the reduced blue sub-pixels are combined together to form one blue sub-pixel 1003 in the first display region 11. By combining this pixel arrangement and setting A ' < A, B ' < B, (A-A ')/A > (C-C ')/C, (B-B ')/B > (C-C ')/C, (C-C ')/C < 0 at this time), the lifetime of the blue sub-pixel 1003 is increased, effectively balancing the different color sub-pixel luminance differences.
In a specific implementation process, if the lifetime of the red sub-pixel 1001 of the light emitting unit 1000 is longer than that of the green sub-pixel 1002, in order to reduce the luminance attenuation difference of each sub-pixel in the first display area 11, the aperture area of the red sub-pixel 1001 in the first display area 11 is reduced by a maximum ratio compared to the aperture areas of the green sub-pixel 1002 and the blue sub-pixel 1003. In a specific implementation process, in the first display area 11, the orthographic projection of the blue sub-pixel 1003 on the plane where the display panel is located covers the orthographic projection of the driving circuit connected to the red sub-pixel 1001 and the orthographic projection of the driving circuit connected to the blue sub-pixel 1003 on the plane where the display panel is located. That is to say, in the first display area 11, the driving circuit connected to the blue sub-pixel 1003 is placed into the blue sub-pixel 1003, and the driving circuit of the red sub-pixel 1001 around the blue sub-pixel 1003 is also placed under the blue sub-pixel 1003, that is, the driving circuit of the red sub-pixel 1001 is offset from the light-emitting position of the red sub-pixel 1001, so that the problem that the driving circuit under the red sub-pixel 1001 is exposed due to too much reduced opening area of the red sub-pixel 1001 is further avoided, and the display effect of the display panel is improved.
In some alternative embodiments, in combination with fig. 16 and 17, the display panel further comprises a third display area 13, the third display area 13 being a transition area between the first display area 11 and the second display area 12. Fig. 17 is a schematic top view of a region H (a region corresponding to a dashed line frame) in fig. 16. Specifically, the third display region 13 is disposed between the first display region 11 and the second display region 12, and in the third display region 13, the aperture areas of the sub-pixels of the same color gradually increase in a direction in which the first display region 11 is directed to the second display region 12. Specifically, in the third display region 13, in the direction in which the first display region 11 is directed to the second display region 12, the aperture area of the red sub-pixel 1001 gradually increases from a ' to a, the aperture area of the green sub-pixel 1002 gradually increases from B ' to B, and the aperture area of the blue sub-pixel 1003 gradually increases from C ' to C. Because the pixel density of the first display area 11 is different from the pixel density of the second display area 12, the luminance of the corresponding first display area 11 is obviously different from that of the corresponding second display area 12, and an obvious boundary line appears at the boundary of the first display area 11 and the second display area 12, and the transition area is arranged between the first display area 11 and the second display area 12, so that the boundary of the second display area 12 and the first display area 11 can be effectively prevented from appearing an obvious bright line, and the display effect of the display panel is improved.
In a specific implementation process, as also shown in fig. 17, the third display area 13 includes a first sub-pixel 131, a second sub-pixel 132, and a third sub-pixel 133 of the same color along a direction from the first display area 11 to the second display area 12, and a difference between an opening area of the third sub-pixel 133 and an opening area of the second sub-pixel 132 is equal to a difference between an opening area of the second sub-pixel 132 and an opening area of the first sub-pixel 131. Wherein, the same color can be red, green or blue. That is, in the third display region 13, the aperture area of the same color sub-pixel increases by a fixed value in a direction in which the first display region 11 is directed to the second display region 12. That is, the opening areas of the same color sub-pixels in the third display area 13 along the direction from the first display area 11 to the second display area 12 are increased according to the equal difference, so that the brightness of the corresponding color sub-pixels is uniformly transited from the first display area 11 to the second display area 12, and the brightness uniformity of the display panel is ensured.
In a specific implementation process, the opening areas of the sub-pixels of any color of the light emitting units 1000 in the first display area 11 are the same value, and the opening areas of the sub-pixels of any color of the light emitting units 1000 in the second display area 12 are the same value; in the third display area 13, the opening area of the sub-pixel near the first display area 11 is greater than or equal to the opening area of the sub-pixel of the same color in the first display area 11, and the opening area of the sub-pixel near the second display area 12 is less than or equal to the opening area of the sub-pixel of the same color in the second display area 12, so that the brightness of each sub-pixel is ensured to be uniformly transited from the first display area 11 to the second display area. For example, fig. 18 is another schematic top view of the region H in fig. 16. Specifically, in the first display region 11, the aperture areas of the red sub-pixels 1001 of all the light-emitting units 1000 are equal, the aperture areas of the green sub-pixels 1002 of all the light-emitting units 1000 are equal, and the aperture areas of the blue sub-pixels 1003 of all the light-emitting units 1000 are equal; in the second display area 12, the opening areas of the red sub-pixels 1001 of all the light emitting units 1000 are equal, the opening areas of the green sub-pixels 1002 of all the light emitting units are equal, and the opening areas of the blue sub-pixels 1003 of all the light emitting units 1000 are equal; in the third display area 13, the opening areas of the red sub-pixels 1001 of all the light emitting units 1000 are equal, the opening areas of the green sub-pixels 1002 of all the light emitting units 1000 are equal, and the opening areas of the blue sub-pixels 1003 of all the light emitting units 1000 are equal; also in the third display region 13, the aperture area of the blue sub-pixel 1003 on the side close to the first display region 11 is larger than the aperture area of the blue sub-pixel 1003 in the first display region 11, and the aperture area of the red sub-pixel 1001 on the side close to the second display region 12 is smaller than the aperture area of the red sub-pixel 1001 in the second display region 12.
In some alternative embodiments, in combination with fig. 19 and 20, the display panel includes a fourth display area 14 disposed between the first display area 11 and the second display area 12, and fig. 20 is a schematic top view of the area Q in fig. 19. Specifically, the fourth display area 14 serves as a transition area between the first display area 11 and the second display area 12. In the fourth display region 14, the aperture area of the red sub-pixel 1001 is A ", the aperture area of the green sub-pixel 1002 is B", and the aperture area of the blue sub-pixel 1003 is C ", wherein (A-A")/A > (C-C ")/C, (B-B")/B > (C-C ")/C, (A" -A ')/A "> (C" -C')/C "", (B "-B ')/B" > (C "-C')/C". That is, the reduction ratio of the aperture area of the blue sub-pixel 1003 in the fourth display area 14 is controlled to be minimum compared with other sub-pixels, and the reduction ratio of the aperture area of the blue sub-pixel 1003 in the first display area 11 is controlled to be minimum compared with other sub-pixels, so that the luminance attenuation difference of each sub-pixel in the fourth display area is reduced, and the display effect of the display panel is improved.
In the specific implementation process, A ═ A- (A-A ')/d, B ═ B- (B-B ')/d, and C ═ C- (C-C ')/d, wherein 0< d is less than or equal to 0.01. That is, in the fourth display area 14, the aperture area of each sub-pixel is a fixed value, and the aperture area of the red sub-pixel 1001 is equal to the aperture area of the red sub-pixel 1001 in the second display area 12, and the difference between the aperture area of the red sub-pixel 1001 in the second display area 12 and the product of the difference between the aperture area of the red sub-pixel 1001 in the first display area 12 and the product of d; the opening area of the green sub-pixel 1002 is equal to the opening area of the green sub-pixel 1002 in the second display area 12, and the difference between the product of the difference between the opening area of the green sub-pixel 1002 in the second display area 12 and the opening area of the green sub-pixel 1002 in the first display area 12 and d; the aperture area of the blue sub-pixel 1003 is equal to the aperture area of the blue sub-pixel 1003 in the second display region 12, and the difference between the aperture area of the blue sub-pixel 1003 in the second display region 12 and the product of the aperture area of the blue sub-pixel 1003 in the first display region 12 and d. That is, in the fourth display area 14, the aperture area of the red sub-pixel 1001 is reduced by a percentage d compared with the aperture area of the red sub-pixel 1001 in the second display area 12, the aperture area of the green sub-pixel 1002 is reduced by a percentage d compared with the aperture area of the green sub-pixel 1002 in the second display area 12, and the aperture area of the blue sub-pixel 1003 is reduced by a percentage d compared with the aperture area of the blue sub-pixel 1003 in the second display area 12, so that the uniform transition of the luminance of each sub-pixel from the first display area 11 to the second display area 12 is ensured, and the display effect of the display panel is improved. In the implementation process, in the fourth display area 14, the width-to-length ratio of the driving transistors in the driving circuits connected to the sub-pixels of the same color is gradually reduced along the direction from the first display area 11 to the second display area 12. Therefore, the uniform transition of the brightness of each sub-pixel from the first display area 11 to the second display area 12 is ensured, and the display effect of the display panel is improved.
Based on the same inventive concept, an embodiment of the present invention also provides a display device, as shown in fig. 21, including the display panel 20 described above. The principle of the display device to solve the problem is similar to the display panel, so the implementation of the display device can be referred to the implementation of the display panel, and repeated details are not repeated.
In a specific implementation process, in the display device provided in the embodiment of the present invention, as shown in fig. 21, the display device further includes an optical electronic element 30 located in the first display area 11, and the optical electronic element 30 is located on a side of the light emitting unit 1000 of the first display area 11, which is far away from the light emitting surface of the display panel 20. And the orthographic projection of the optoelectronic component 30 on the display panel 20 is located within the first display area 11. In particular implementations, the optical electronics 30 include at least one of an optical sensor, a distance sensor, a camera, an earpiece, an iris recognition sensor, and a depth sensor. Of course, the skilled person can select the corresponding opto-electronic element 30 according to actual needs, and the details are not described here.
In a specific implementation process, the display device provided in the embodiment of the present invention may be a mobile phone as shown in fig. 18, and of course, the display device provided in the embodiment of the present invention may also be any product or component having a display function, such as a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein nor should they be construed as limiting the present invention.
In the display panel and the display device provided by the embodiments of the present invention, the aperture area a 'of the red sub-pixel in the first display region is smaller than the aperture area a of the red sub-pixel in the second display region, and the aperture area B' of the green sub-pixel in the first display region is smaller than the aperture area B of the green sub-pixel in the second display region. Furthermore, the relationship between the aperture areas of the same-color sub-pixels in the second display region compared with the aperture areas of the same-color sub-pixels in the first display region is (A-A ')/A > (C-C ')/C, (B-B ')/B > (C-C ')/C, where A is not more than C, B is not more than C, C is the aperture area of the blue sub-pixel in the second display region, and C ' is the aperture area of the blue sub-pixel in the first display region. In other words, the ratio of the difference between the opening area of the red sub-pixel in the second display area and the opening area of the red sub-pixel in the first display area to the opening area of the red sub-pixel in the second display area is a first ratio; the ratio of the difference value of the opening area of the green sub-pixel in the second display area to the opening area of the green sub-pixel in the first display area to the opening area of the green sub-pixel in the second display area is a second ratio; the ratio of the difference value of the opening area of the blue sub-pixel in the second display area and the opening area of the blue sub-pixel in the first display area to the opening area of the blue sub-pixel in the second display area is a third ratio; the first ratio is greater than the third ratio, and the second ratio is greater than the third ratio. Therefore, under the condition that the opening areas of the red sub-pixel and the green sub-pixel in the first display area are respectively smaller than the opening areas of the corresponding sub-pixels with the same color in the second display area, the brightness attenuation difference of the red sub-pixel, the green sub-pixel and the blue sub-pixel in the first display area is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (17)
1. A display panel, comprising:
a first display area and a second display area;
a light emitting unit including a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
in the first display area, the opening area of the red sub-pixel is A ', the opening area of the green sub-pixel is B ', and the opening area of the blue sub-pixel is C ';
in the second display area, the opening area of the red sub-pixel is A, the opening area of the green sub-pixel is B, and the opening area of the blue sub-pixel is C, wherein A is less than or equal to C, and B is less than or equal to C;
wherein A '< A, B' < B, (A-A ')/A > (C-C')/C, (B-B ')/B > (C-C')/C.
2. The display panel according to claim 1, wherein a pixel density of the light emitting units of the first display region is smaller than a pixel density of the light emitting units of the second display region.
3. The display panel of claim 2, wherein C' ≦ C.
4. The display panel according to claim 3, wherein a '/a, B '/B, and C '/C, wherein 0.8< a <1, 0.8< B <1, 0.8< C ≦ 1, a < C, and B < C.
5. The display panel according to claim 1, wherein a width-to-length ratio of a driving transistor in a driving circuit to which a sub-pixel of any one color of the light emitting unit of the first display region is connected is larger than a width-to-length ratio of a driving transistor in a driving circuit to which a sub-pixel of any one color of the light emitting unit of the second display region is connected.
6. The display panel according to claim 5, wherein in the first display region, a width-to-length ratio of a driving transistor in the driving circuit to which the blue sub-pixel is connected is larger than a width-to-length ratio of a driving transistor in the driving circuit to which the red sub-pixel is connected, and a width-to-length ratio of a driving transistor in the driving circuit to which the red sub-pixel is connected is larger than a width-to-length ratio of a driving transistor in the driving circuit to which the green sub-pixel is connected.
7. The display panel of claim 1,
in the second display area, the light emitting units are arranged in an array along a first direction and a second direction, the first direction is intersected with the second direction, the light emitting units comprise a red sub-pixel, a green sub-pixel and two blue sub-pixels, the red sub-pixel and the green sub-pixel are arranged along the first direction, and the two blue sub-pixels are arranged along the first direction;
in the first display area, the light emitting units are arranged in an array along the first direction and the second direction, each light emitting unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, the red sub-pixels and the green sub-pixels are arranged along the first direction, and the blue sub-pixels are located on the same side of the red sub-pixels and the green sub-pixels.
8. The display panel of claim 7 wherein C < C' ≦ 2C.
9. The display panel of claim 8, wherein in the first display area, an orthographic projection of the blue sub-pixel on a plane of the display panel covers an orthographic projection of the driving circuit connected to the red sub-pixel and the driving circuit connected to the blue sub-pixel on the plane of the display panel.
10. The display panel according to claim 1, wherein the display panel includes a third display region disposed between the first display region and the second display region, and in the third display region, an opening area of a sub-pixel of a same color is gradually increased in a direction in which the first display region is directed to the second display region.
11. The display panel according to claim 10, wherein the third display region includes a first sub-pixel, a second sub-pixel, and a third sub-pixel of a same color in a direction in which the first display region is directed to the second display region, and a difference between an opening area of the third sub-pixel and an opening area of the second sub-pixel is equal to a difference between an opening area of the second sub-pixel and an opening area of the first sub-pixel.
12. The display panel of claim 1, wherein the display panel comprises a fourth display region disposed between the first display region and the second display region, and wherein in the fourth display region, the red sub-pixel has an open area of a ", the green sub-pixel has an open area of B", and the blue sub-pixel has an open area of C ", wherein (a-a")/a > (C-C ")/C, (B-B")/B > (C-C ")/C, (a" -a ')/a "> (C" -C')/C "> (B" -B ')/B "> (C" -C')/C ").
13. The display panel of claim 12, wherein a ═ a- (a-a ')/d, B ═ B- (B-B ')/d, C ═ C- (C-C ')/d, wherein 0< d ≦ 0.01.
14. The display panel according to claim 12, wherein in the fourth display region, in a direction in which the first display region is directed to the second display region, width-to-length ratios of driving transistors in driving circuits to which sub-pixels of the same color are connected are gradually decreased.
15. The display panel according to claim 10, wherein the aperture areas of the sub-pixels of any one color of the light emitting units in the first display region are the same value, and the aperture areas of the sub-pixels of any one color of the light emitting units in the second display region are the same value;
in the third display area, the opening area of the sub-pixel close to the first display area is larger than or equal to the opening area of the sub-pixel of the same color in the first display area, and the opening area of the sub-pixel close to the second display area is smaller than or equal to the opening area of the sub-pixel of the same color in the second display area.
16. A display device characterized by comprising the display panel according to any one of claims 1 to 15.
17. The display device according to claim 16, wherein the display panel comprises:
and the optical electronic element is positioned in the first display area, and the optical electronic element is positioned on one side, away from the light-emitting surface of the display panel, of the light-emitting unit in the first display area.
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| CN114005403A (en) * | 2021-11-25 | 2022-02-01 | 武汉天马微电子有限公司 | Display panel driving method and display device |
| WO2023232106A1 (en) * | 2022-06-02 | 2023-12-07 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method therefor, display panel and display device |
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