CN111627959A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111627959A CN111627959A CN202010214594.1A CN202010214594A CN111627959A CN 111627959 A CN111627959 A CN 111627959A CN 202010214594 A CN202010214594 A CN 202010214594A CN 111627959 A CN111627959 A CN 111627959A
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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
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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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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- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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Abstract
The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and is used for ensuring the brightness uniformity of a first display area and a second display area and ensuring the display effect of the first display area on the basis of improving the light transmittance of the first display area. The display panel comprises a first display area and a second display area, wherein the second display area at least partially surrounds the first display area; the first display area and the second display area both comprise a plurality of sub-pixels, and the density of the sub-pixels in the first display area is less than the density of the sub-pixels in the second display area; the sub-pixels located in the first display region do not include a blue sub-pixel.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel and a display device.
[ background of the invention ]
With the increasing demand of users for diversified use of display devices and the emergence of design requirements for high screen occupation ratio of display devices, the design of an off-screen camera (i.e., embedding an imaging module such as a camera in a display area) has appeared so as to reduce the size of a frame area of a display device. However, the design of the camera under the screen is adopted, and on the basis of improving the screen occupation ratio of the display device, higher requirements are put forward on the light transmittance at the position where the imaging module is arranged in the display panel. On the basis, the problems of brightness uniformity when the position of the imaging module in the display panel is set and the position of the imaging module is not set during display, display effect when the position of the imaging module is set, and the like are urgently solved.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a display panel and a display apparatus, so as to improve the uniformity of brightness when displaying at the positions where the imaging modules are disposed and the positions where the imaging modules are not disposed in the display panel on the basis of improving the transmittance of light at the positions where the imaging modules are disposed in the display panel, and ensure the display effect at the positions where the imaging modules are disposed in the display panel.
In one aspect, an embodiment of the present invention provides a display panel, including: a first display area and a second display area, the second display area at least partially surrounding the first display area; the first display area and the second display area both comprise a plurality of sub-pixels, and the density of the sub-pixels in the first display area is less than the density of the sub-pixels in the second display area;
the sub-pixels located in the first display region do not include a blue sub-pixel.
In another aspect, an embodiment of the present invention provides a display device, including the display panel described above;
the display device further comprises an imaging module, and the orthographic projection of the imaging module on the plane of the display panel is located in the first display area.
According to the display panel provided by the embodiment of the invention, the density of the sub-pixels in the first display area is reduced to be smaller than that of the sub-pixels in the second display area, so that the light transmittance of the first display area can be improved. When placing imaging module such as camera, can correspond first display area setting with imaging module like this, can guarantee imaging module's daylighting effect.
In addition, the embodiment of the invention does not arrange the blue sub-pixel in the first display area with the lower density of the sub-pixel, so that when the first display area and the second display area are simultaneously displayed, the luminance of the first display area and the luminance of the second display area tend to be consistent on the basis of improving the light transmittance of the first display area by increasing the current density of the sub-pixel in the first display area. In addition, because the blue sub-pixel is not arranged in the first display area with the large current density, the influence of the service life attenuation of the blue sub-pixel under the large current density on the display effect of the first display area can be avoided, and the normal display of the first display area can be ensured.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic top view of a display panel in the prior art;
fig. 2 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 3 is an enlarged view of region Q of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a sub-pixel according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of a first display area according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of an arrangement of sub-pixels in the first region according to an embodiment of the present invention;
FIG. 7 is a schematic view of another arrangement of sub-pixels in the first region according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a first display area according to an embodiment of the present invention;
FIG. 9 is another schematic diagram of a first display area according to an embodiment of the invention;
FIG. 10 is a schematic view of a first display area according to an embodiment of the present invention;
fig. 11 is a schematic top view illustrating a display device according to an embodiment of the invention;
FIG. 12 is a schematic cross-sectional view along BB' of FIG. 11;
FIG. 13 is a diagram illustrating an effect of a first region according to an embodiment of the present invention;
fig. 14 is a diagram illustrating another display effect of the first area according to the embodiment of the present invention;
FIG. 15 is a diagram illustrating still another display effect of the first area according to the embodiment of the present invention;
FIG. 16 is a diagram illustrating still another display effect of the first area according to the embodiment of the present invention;
FIG. 17 is a diagram of another display effect of the first area according to the embodiment of the present invention;
FIG. 18 is a diagram of another display effect of the first area according to the embodiment of the present invention;
fig. 19 is a diagram illustrating a display effect of the first display area according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes 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 "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe display regions in embodiments of the present invention, these display regions should not be limited by these terms. These terms are only used to distinguish the display areas from each other. For example, the first display area may also be referred to as the second display area, and similarly, the second display area may also be referred to as the first display area without departing from the scope of embodiments of the present invention.
For a display panel designed by using an under-screen camera, in order to ensure the light transmittance of a region of the display panel where imaging modules such as the camera are placed and the lighting effect of the camera, the density of sub-pixels in the region is usually reduced, so that the density of sub-pixels in the region where the camera is placed is lower than the density of sub-pixels in the surrounding region where the camera is not placed. As shown in fig. 1, fig. 1 is a schematic top view of a display panel in the prior art, and a display area of the display panel includes a first display area 1 'and a second display area 2'. The first display area 1 'is an area where a camera is placed, and the second display area 2' is an area where a camera is not placed. The sub-pixel density of the first display region 1 'is less than that of the second display region 2'. In the process of implementing the present invention, the inventors studied and found that, in order to ensure uniformity of luminance at different positions in a display region when performing display using the display panel shown in fig. 1 (where luminance is the luminous intensity of a luminous body per unit projection area, the luminance of a first display region 1 ', i.e., the ratio of the sum of the luminous intensities of the pixels in the first display region 1 ' to the area of the first display region 1 ', and the luminance of a second display region 2 ', i.e., the ratio of the sum of the luminous intensities of the pixels in the second display region 2 ' to the area of the second display region 2 '), it is necessary to increase the current density of the sub-pixels located in the first display region 1 ' during operation to increase the luminance of the first display region 1 ' in such a manner that the luminous intensity of the sub-pixels in the first display region 1 ' is increased. However, the aging speed of the sub-pixels in the first display region 1' is increased, and the lifetime is shortened. For a display panel provided with an Organic Light Emitting Diode (OLED) device, the lifetime of the blue Light emitting material for emitting blue Light is the shortest compared to the lifetime of the red Light emitting material and the lifetime of the green Light emitting material, and the luminance degradation phenomenon of the blue Light emitting material is the most serious at a higher current density, so that the display effect of the first display region 1' is greatly affected.
In view of the above, an embodiment of the present invention provides a display panel, as shown in fig. 2 and fig. 3, fig. 2 is a schematic top view of the display panel provided by the embodiment of the present invention, fig. 3 is an enlarged schematic view of an area Q in fig. 2, the display panel 100 includes a first display area AA1 and a second display area AA2, and the second display area AA2 at least partially surrounds the first display area AA 1. Each of the first and second display areas AA1 and AA2 includes a plurality of sub-pixels 1. As shown in fig. 4, fig. 4 is a schematic cross-sectional view of a sub-pixel according to an embodiment of the present invention, where the sub-pixel 1 may include an OLED device 21 and a pixel circuit electrically connected to the OLED device, the pixel circuit includes a plurality of thin film transistors 22, and only one thin film transistor directly connected to the OLED device is shown in fig. 4 as an illustration.
In the embodiment of the present invention, the density of the sub-pixels 1 located in the first display area AA1 is less than the density of the sub-pixels 1 located in the second display area AA2, wherein the density of the sub-pixels 1 is the number of sub-pixels possessed by a unit area of the display panel. And, the sub-pixel 1 located in the first display area AA1 does not include a blue sub-pixel. For example, a red sub-pixel and a green sub-pixel may be disposed in the first display area AA 1.
When the display panel displays, the pictures presented in the first display area AA1 and the second display area AA2 may constitute a continuous complete picture. Alternatively, the first display area AA1 may be a separate display area, and for example, auxiliary information such as the current power of the display device, the date, the time, and the reminder information may be displayed using the first display area AA 1.
According to the display panel provided by the embodiment of the invention, the density of the sub-pixels in the first display area AA1 is smaller than that of the sub-pixels in the second display area AA2 by reducing the density of the sub-pixels in the first display area AA1, so that the light transmittance of the first display area AA1 can be improved. When placing imaging module such as camera like this, can correspond first display area AA1 setting with imaging module, can guarantee imaging module's daylighting effect.
Furthermore, the embodiment of the present invention does not provide a blue sub-pixel in the first display area AA1 where the density of the sub-pixel 1 is relatively small, so that when the first display area AA1 and the second display area AA2 are simultaneously displayed, the luminance of the first display area AA1 and the luminance of the second display area AA2 may be made to be uniform while the light transmittance of the first display area AA1 is increased by increasing the current density of the sub-pixel located in the first display area AA 1. Moreover, since the blue sub-pixel is not disposed in the first display area AA1 that uses a large current density, the influence of the lifetime degradation of the blue sub-pixel at the large current density on the display effect of the first display area AA1 can be avoided, and the normal display of the first display area AA1 can be ensured.
Optionally, when the sub-pixels 1 located in the first display area AA1 and the second display area AA2 are disposed, the sub-pixels 1 located in the second display area AA2 may be disposed in an array arrangement, and the sub-pixels 1 located in the first display area AA1 may be disposed in a different arrangement manner from the second display area AA2, for example, the sub-pixels located in the first display area AA1 are designed in a non-array arrangement, so as to reduce a diffraction phenomenon that may occur when external ambient light is emitted through the first display area AA1 to an imaging module, such as a camera, disposed corresponding to the first display area AA 1. When the imaging module such as a camera works, the external ambient light needs to be collected, and the external ambient light may pass through the sub-pixel 1 located in the first display area AA1 and the metal traces in the signal lines such as the scan line and the data line electrically connected to the sub-pixel 1 in the process of propagating to the imaging module such as a camera. As shown in fig. 4, the thin film transistor 22 constituting the pixel circuit in the sub-pixel 1 includes a metal electrode including a gate electrode 222, a source electrode 223, and a drain electrode 224, and an active structure 221. The OLED device 21 in the sub-pixel 1 includes an anode 211, a light emitting layer 212, and a cathode 213, which are stacked. The anode 211 and the cathode 213 may be made of metal materials with different light transmittances according to the light emitting direction of the OLED device. Since the metal materials in the pixel circuit and the OLED device are usually opaque, if the sub-pixels 1 are regularly arranged, the metal wires connected to the sub-pixels 1 and the metal electrodes in the sub-pixels 1 are also regularly arranged, and external ambient light passes through the regularly arranged opaque metals to generate an obvious diffraction phenomenon, which causes an obvious diffraction spot on a photographed image of the imaging module and affects a photographing effect. In the embodiment of the invention, the sub-pixels 1 of the AA1 positioned in the first display area are arranged in a non-array manner, so that the diffraction condition of light can be destroyed, the possibility of diffraction spots with alternate light and shade in pictures shot by imaging modules such as a camera and the like is reduced, and the imaging quality of the imaging modules can be ensured.
Alternatively, when the sub-pixels in the first display area AA1 are arranged in a non-array arrangement, the embodiment of the invention may set a plurality of different areas in the first display area AA1, where a part of the areas are provided with the sub-pixels and another part of the areas are not provided with the sub-pixels, so that the sub-pixels in the first display area AA1 may be arranged in a non-array arrangement as a whole.
For example, as shown in fig. 3, wherein the first display area AA1 includes a first area AA11 and a second area AA 12. The first area AA11 includes a sub-pixel 1, and the second area AA12 includes no sub-pixel. When the sub-pixels 1 located in the first area AA11 are disposed, the embodiment of the invention may arrange the sub-pixels 1 therein in an array along a first direction x and a second direction y, where the first direction x and the second direction y intersect. And, along the first direction x or the second direction y, the distance between two adjacent sub-pixels 1 within the same first area AA11 is made smaller than the length of the second area AA12 along the same direction. Taking the orientation shown in fig. 3 as an example, along the second direction y, the distance d1 between two adjacent sub-pixels 1 in the same first area AA11 is smaller than the length d2 of the second area AA12 along the same direction. On one hand, the arrangement of the second area AA12 can reduce the pixel density of the first display area AA1, and at this time, the pixel arrangement in the second display area AA2 and the second area AA12 does not need to be changed, so that an additional mask process is not needed, and the process preparation is simplified; on the other hand, the light receiving uniformity of the imaging modules such as the camera is not affected by the dislocation and the interval arrangement of the second area AA12 and the first area AA11, and the diffraction effect caused by regularly arranged sub-pixels can be further reduced by the unequal local pixel density of the whole first display area AA1, so that the imaging quality of the imaging modules such as the camera is improved.
Alternatively, the number of the first areas AA11 may be at least two, and when the second area AA12 is provided, the second area AA12 may be provided between two adjacent first areas AA 11.
It should be noted that the shapes of the first area AA11 and the second area AA12 shown in fig. 3 are only schematic, and actually, in the embodiment of the present invention, the shape of the first area AA11 may be designed to include any one or more of a polygon, a circle, and a ring. For example, as shown in fig. 5, fig. 5 is an enlarged schematic view of a further first display area provided by an embodiment of the present invention, wherein a plurality of first areas AA11 are provided, and when the display panel is displayed, different first areas AA11 may be respectively used as areas for displaying icons of applications such as mails, telephones, maps, browsers, and the like. Alternatively, when the sub-pixels 1 located in the respective first areas AA11 are provided, the sub-pixels 1 in the respective first areas AA11 may be arranged according to the shapes of icons to be displayed.
Alternatively, as shown in fig. 6 and 7, fig. 6 is a schematic layout diagram of sub-pixels located in a first region according to an embodiment of the present invention, and fig. 7 is another schematic layout diagram of sub-pixels located in a first region according to an embodiment of the present invention, where the first region AA11 includes first sub-pixel columns 11 and second sub-pixel columns 12 alternately arranged along a first direction x, the first sub-pixel column 11 includes red sub-pixels R and green sub-pixels G arranged along a second direction y, and the second sub-pixel column 12 includes only green sub-pixels G arranged along the second direction y. In the adjacent first subpixel column 11 and second subpixel column 12, two subpixels closest to each other are arranged in a staggered manner in the first direction x.
For example, when the first sub-pixel column 11 including the red sub-pixel R and the green sub-pixel G is disposed, as shown in fig. 6, the red sub-pixel R and the green sub-pixel G may be disposed to be alternately arranged along the second direction y. In the two first subpixel columns 11 adjacent to the second subpixel column 12, the distance between the green subpixel G included in one of the two subpixel columns is set to be closest to the red subpixel R included in the other subpixel column. When the display panel displays, the sub-pixels corresponding to the diamond-shaped area portion surrounded by the black lines shown in fig. 6 may be used as one pixel unit 10, where the number ratio of the red sub-pixels R to the green sub-pixels G is 1: 3. Because the number of the green sub-pixels G is significantly greater than that of the red sub-pixels R, when the first area AA11 is displaying, the green sub-pixels G can be divided into a plurality of groups, so that different groups of green sub-pixels are alternately matched with the red sub-pixels R for displaying, thereby avoiding the overlong lighting time of a single green sub-pixel and ensuring the lifetime of the green sub-pixel.
Alternatively, when the first sub-pixel column 11 is provided, as shown in fig. 7, in the embodiment of the present invention, two red sub-pixels R may be provided between two adjacent green sub-pixels G, and in two first sub-pixel columns 11 adjacent to the second sub-pixel column 12, a distance between the green sub-pixel G included in one of the two adjacent green sub-pixels G and the red sub-pixel R included in the other one of the two adjacent green sub-pixels G is closest to each other. Also, when the sub-pixels in the first area AA11 are arranged in the manner shown in fig. 7, the distance L1 between any two adjacent sub-pixels in the first sub-pixel column 11 may be smaller than the distance between two adjacent green sub-pixels G2 in the second sub-pixel column 12. That is, the distance L11 between two adjacent red sub-pixels in the first sub-pixel column 11 is smaller than the distance L2 between two adjacent green sub-pixels in the second sub-pixel column 12, and the distance L12 between two adjacent red sub-pixels R and green sub-pixels G in the first sub-pixel column 11 is smaller than the distance L2 between two adjacent green sub-pixels G in the second sub-pixel column 12, and the distance between two adjacent sub-pixels in the first sub-pixel column 11 is not equal to the distance between two adjacent sub-pixels in the second sub-pixel column 12, so as to break the regular arrangement, further increase the degree of non-array arrangement of sub-pixels in the first area AA11, and reduce the diffraction phenomenon that may occur when light passes through the first area AA11 and is emitted to an imaging module such as a camera. When the display panel displays, the sub-pixels corresponding to the diamond-shaped area part enclosed by the black lines shown in fig. 7 may be used as one pixel unit 10, where the number ratio of the red sub-pixels R to the green sub-pixels G is 2: 3.
Alternatively, the first display area AA1 may be circular, and the red sub-pixels R and the green sub-pixels G included in the first display area AA1 may be arranged along the circumferential direction of the circularly arranged first display area AA 1.
For example, as shown in fig. 8, fig. 8 is a schematic diagram of the first display area according to the embodiment of the present invention, wherein the red sub-pixels R may be arranged in a first circle along a circumferential direction of the first display area AA1, and the green sub-pixels G may be arranged in a second circle along the circumferential direction of the first display area AA 1. Alternatively, the center of a first circle surrounded by the red sub-pixel R and the center of a second circle surrounded by the green sub-pixel G may coincide with the center of the first display area AA 1. And the inner diameter of one of the first circular ring and the second circular ring is larger than the outer diameter of the other circular ring, and the radius of the first display area is larger than the maximum outer diameter of the first circular ring and the second circular ring. In the embodiment shown in fig. 8, the inner diameter of the second circle surrounded by the green sub-pixel G is larger than the outer diameter of the first circle surrounded by the red sub-pixel.
For example, in the embodiment of the present invention, the width of the first circular ring and the width of the second circular ring may be only the width of one sub-pixel, that is, only one circle of red sub-pixels R encloses the first circular ring, and only one circle of green sub-pixels G encloses the second circular ring, so as to improve the color mixing effect of the red sub-pixels R and the green sub-pixels G.
It should be noted that the number of the first circular rings and the second circular rings is not limited in the embodiment of the present invention. For example, as shown in fig. 9, fig. 9 is another schematic diagram of the first display area according to the embodiment of the present invention, wherein the number of the first circular rings and the second circular rings may be set to be at least two, and the first circular rings surrounded by the red sub-pixels R and the second circular rings surrounded by the green sub-pixels G are alternately arranged along the radial direction of the first display area AA 1.
Alternatively, as shown in fig. 10, fig. 10 is a further schematic diagram of the first display area according to the embodiment of the present invention, in the embodiment of the present invention, centers of a first circle surrounded by the red sub-pixel R and a second circle surrounded by the green sub-pixel G both coincide with a center of the first display area AA1, and inner diameters and outer diameters of the first circle and the second circle are respectively equal, that is, the red sub-pixel R and the green sub-pixel G are alternately arranged along a circumferential direction of the first display area AA1, so as to improve a color mixing effect of the red sub-pixel R and the green sub-pixel G, and improve a light emitting effect of the first display area.
It should be noted that the shapes and sizes of the sub-pixels shown in fig. 3 and 6 to 10 are merely schematic, and the shapes of the sub-pixels may be designed to be circular, polygonal or other different shapes according to different design requirements in the actual manufacturing process of the display panel, which is not limited in the embodiment of the present invention.
Fig. 11 and 12 show a display device, where fig. 11 is a schematic top view of the display device according to the embodiment of the present invention, and fig. 12 is a schematic cross-sectional view of fig. 11 along BB', where the display device includes an imaging module 200 and the display panel 100. The orthographic projection of the imaging module 200 on the plane of the display panel is located in the first display area AA 1. The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 11 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
When the display device is used for displaying, the sub-pixels positioned in the first display area AA1 and the second display area AA2 can both be made to emit light, so that full-screen display is realized. When photographing is performed using the imaging module 200, the sub-pixels located in the first display area AA1 may be controlled not to emit light, so as to ensure the lighting effect of the imaging module 200.
According to the display device provided by the embodiment of the invention, the density of the sub-pixels in the first display area AA1 is smaller than that of the sub-pixels in the second display area AA2 by reducing the density of the sub-pixels in the first display area AA1, so that the light transmittance of the first display area AA1 can be improved. When placing imaging module such as camera like this, can correspond first display area AA1 setting with imaging module, can guarantee imaging module's daylighting effect.
Furthermore, the embodiment of the present invention does not provide a blue sub-pixel in the first display area AA1 where the density of the sub-pixel 1 is relatively small, so that when the first display area AA1 and the second display area AA2 are simultaneously displayed, the luminance of the first display area AA1 and the luminance of the second display area AA2 may be made to be uniform while the light transmittance of the first display area AA1 is increased by increasing the current density of the sub-pixel located in the first display area AA 1. Moreover, since the blue sub-pixel is not disposed in the first display area AA1 that uses a large current density, the influence of the lifetime degradation of the blue sub-pixel at the large current density on the display effect of the first display area AA1 can be avoided, and the normal display of the first display area AA1 can be ensured.
With reference to fig. 3 and 11, when the first display area AA1 is designed to include the first area AA11 with sub-pixels 1 and the second area AA12 without sub-pixels as shown in fig. 3, the embodiment of the invention may further provide the driving module 300 in the display device, and the driving module 300 is configured to adjust the first area AA11 to exhibit different display effects according to the current operating state of the display device. For example, the current operating state of the display device may include: whether there are backlog, current electric quantity, current signal strength, etc. at present.
Alternatively, the driving module 300 may adjust the light emitting color of the first area AA11 according to the current working state of the display device. Taking the first area AA11 as an example for displaying the current power of the display device, the embodiment of the invention may configure the driving module 300 to make the first area AA11 show different colors according to the current power of the display device. For example, when the current power of the display device is less than 20%, the driving module 300 may light the red sub-pixel R and the green sub-pixel G in the first area AA11, so that the first area AA11 appears red. When the current power of the display device is greater than 50%, the driving module 300 may turn on the red sub-pixel R and turn on the green sub-pixel G, so that the first area AA11 appears green. When the current power of the display device is between 20% and 50%, the driving module 300 may turn on both the red sub-pixel R and the green sub-pixel G, and may mix the red sub-pixel R and the green sub-pixel G to generate different colors by adjusting the gray scales of the two sub-pixels. For example, the red sub-pixel R may be displayed at 255 gray level, and the green sub-pixel G may be displayed at 120 gray level, so that the first area AA11 appears yellow.
Alternatively, the driving module 300 may be further configured to adjust the light emitting area of the first area AA11 according to the current operating state of the display device. For example, when the first area AA11 is designed as a ring shape, the different operation states of the display device can be expressed by changing the width of the ring shape.
For example, still taking the example of displaying the current power of the display device by using the first area AA11, when the current power of the display device is 100%, as shown in fig. 13, fig. 13 is a display effect diagram of the first area provided by the embodiment of the present invention, the driving module 300 may cause the sub-pixels 1 at each position in the annularly arranged first area AA11 to be lit up, so as to exhibit the display effect shown in fig. 13. When the current power of the display device is 50%, as shown in fig. 14, fig. 14 is another display effect diagram of the first area provided by the embodiment of the invention, the driving module 300 may reduce the width of the lighting area in the annularly arranged first area AA11 compared with the width shown in fig. 13, so as to exhibit the display effect shown in fig. 14. When the current power of the display device is 20%, as shown in fig. 15, fig. 15 is a graph showing still another display effect of the first area according to the embodiment of the present invention, the driving module 300 may further reduce the width of the lighting area in the annularly arranged first area AA11 compared with the width shown in fig. 14, so as to present the display effect shown in fig. 15. The shaded filled-in areas in fig. 13, 14 and 15 represent lit areas, the thicker outline representing the outline of the first area AA 11.
Alternatively, when the first area AA11 is designed to be annular, the embodiment of the present invention may also make the first area AA11 present different operating states of the display device by changing the length of the lighting area in the circumferential direction of the first area AA 11.
For example, still taking fig. 13 as an example of a screen when the current power of the display device is 100%, as shown in fig. 16 when the current power of the display device is 50%, and as shown in fig. 16 which is another display effect diagram of the first area provided by the embodiment of the invention, the driving module 300 may decrease the length of the lighting area in the first area AA11 in the annular shape along the circumferential direction of the first area AA11 by half compared with the length shown in fig. 13, so as to exhibit the display effect shown in fig. 16. When the current power of the display device is 20%, as shown in fig. 17, fig. 17 is a graph illustrating still another display effect of the first area according to the embodiment of the present invention, the driving module 300 may further reduce the length of the lighting area in the first area AA11 along the circumferential direction of the first area AA11, compared with the length illustrated in fig. 16, so as to exhibit the display effect illustrated in fig. 17. The shaded filled-in areas in fig. 16 and 17 represent lit areas, and the thicker outline represents the outline of the first area AA 11.
Alternatively, the driving module 300 may be further configured to adjust the scanning frequency of the first region according to the current operating state of the display device. For example, when the display device is in a state of having a missed call or unread information, the scanning frequency of the first area may be reduced, which may reduce power consumption of the first area AA11 in addition to being convenient for the user to observe.
Or, the driving module 300 may be further configured to adjust the light emitting brightness of the first region according to the current working state of the display device. Specifically, the driving module 300 may change the brightness of the first area by changing the gray scale of the sub-pixels in the first area AA 11. Still taking the image shown in fig. 13 as an example of the image when the current power of the display device is 100%, as shown in fig. 18 when the current power of the display device is 50%, as shown in fig. 18, fig. 18 is another display effect diagram of the first area provided by the embodiment of the present invention, the driving module 300 may keep the area of the light-emitting area in the first area AA11 unchanged, reduce the luminance of the display image in the first area AA11 by reducing the light-emitting gray scale of the sub-pixels, and present the display effect as shown in fig. 18, thereby indicating that the current power of the display device is 50%.
It should be noted that the position of the driving module 300 shown in fig. 11 is only illustrated, and it may be located on the lower frame of the display device shown in fig. 11, or may be integrated into a driving chip IC for driving the display panel to perform display, and is bent to the back of the display panel through the flexible circuit board, so as to improve the screen occupation ratio of the display panel.
Illustratively, when the shape of the first display area AA1 is designed to be circular as shown in fig. 9, in conjunction with fig. 19, fig. 19 is a display effect diagram of the first display area provided by the embodiment of the present invention, the embodiment of the present invention may set the red sub-pixel R to include first red sub-pixel R1 and second red sub-pixel R2 alternately arranged along the circumferential direction of the first display area AA1, and set the green sub-pixel G to include first green sub-pixel G1 and second green sub-pixel G2 alternately arranged along the circumferential direction of the first display area AA 1. The driving module 300 lights up the first red sub-pixel R1 and the first green sub-pixel G1 and does not light up the second red sub-pixel R2 and the second green sub-pixel G2 in the first period of the display cycle according to the current operating state of the display device, and the black filling pattern shown in fig. 19 represents the unlighted second red sub-pixel R2 and second green sub-pixel G2. In the second period of the display period, the first red sub-pixel R1 and the first green sub-pixel G1 are unlit, and the second red sub-pixel R2 and the second green sub-pixel G2 are lit. For example, when the current power of the display device is 50%, in the first period of the display cycle, as shown in fig. 19, the driving module 300 lights up the first red sub-pixel R1 and the first green sub-pixel G1, and does not light up the second red sub-pixel R2 and the second green sub-pixel G2; in the second period of the display period, the first red sub-pixel R1 and the first green sub-pixel G1 are unlit, and the second red sub-pixel R2 and the second green sub-pixel G2 are lit. That is, the same kind of display effect is presented by alternately lighting up sub-pixels located at respective positions. By the arrangement, the phenomenon that the lighting time of the sub-pixels at a certain position is too long can be avoided, and the defects of ghost shadow and the like of a display picture are avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (19)
1. A display panel, comprising: a first display area and a second display area, the second display area at least partially surrounding the first display area; the first display area and the second display area both comprise a plurality of sub-pixels, and the density of the sub-pixels in the first display area is less than the density of the sub-pixels in the second display area;
the sub-pixels located in the first display region do not include a blue sub-pixel.
2. The display panel according to claim 1,
the sub-pixels positioned in the first display area are arranged in a non-array mode.
3. The display panel according to claim 2,
the first display area comprises a first area and a second area;
the sub-pixels positioned in the first area are arrayed along a first direction and a second direction, and the first direction and the second direction are intersected;
the second region does not include the sub-pixels;
along the first direction or the second direction, the distance between two adjacent sub-pixels in the same first area is smaller than the length of the second area along the same direction.
4. The display panel according to claim 3,
the first region includes first and second sub-pixel columns alternately arranged in the first direction, the first sub-pixel column includes red and green sub-pixels arranged in the second direction, and the second sub-pixel column includes only green sub-pixels arranged in the second direction;
and, in the adjacent first sub-pixel column and the second sub-pixel column, two sub-pixels closest to each other are arranged in a staggered manner in the first direction.
5. The display panel according to claim 4,
in the first sub-pixel column, the red sub-pixels and the green sub-pixels are alternately arranged along the second direction;
and the number of the first and second electrodes,
and the distance between the green sub-pixel included in one of the two first sub-pixel columns adjacent to the second sub-pixel column and the red sub-pixel included in the other one of the two first sub-pixel columns is closest.
6. The display panel according to claim 4,
in the first sub-pixel column, two red sub-pixels are included between two adjacent green sub-pixels;
and the number of the first and second electrodes,
and the distance between the green sub-pixel included in one of the two first sub-pixel columns adjacent to the second sub-pixel column and the red sub-pixel included in the other one of the two first sub-pixel columns is closest.
7. The display panel according to claim 6,
the distance between two adjacent sub-pixels in the first sub-pixel column is smaller than the distance between two adjacent sub-pixels in the second sub-pixel column.
8. The display panel according to claim 3,
the shape of the first area comprises any one or more of a polygon, a circle and a ring.
9. The display panel according to claim 3,
the number of the first areas is at least two, and the second area is positioned between two adjacent first areas.
10. The display panel according to claim 2,
the first display area is circular in shape;
the first display area comprises a red sub-pixel and a green sub-pixel, and the red sub-pixel and the green sub-pixel are arranged along the circumferential direction of the first display area.
11. The display panel according to claim 10,
the red sub-pixels are arranged into a first ring along the circumferential direction of the first display area, and the green sub-pixels are arranged into a second ring along the circumferential direction of the first display area;
one of the first and second rings has an inner diameter greater than an outer diameter of the other.
12. The display panel according to claim 10,
the red sub-pixels and the green sub-pixels are alternately arranged along a circumferential direction of the first display region.
13. A display device characterized by comprising the display panel according to claim 1;
the display device further comprises an imaging module, and the orthographic projection of the imaging module on the plane of the display panel is located in the first display area.
14. The display device according to claim 13,
the first display area comprises a first area and a second area;
the sub-pixels positioned in the first area are arrayed along a first direction and a second direction, and the first direction and the second direction are intersected;
the second region does not include the sub-pixels;
along the first direction or the second direction, the distance between two adjacent sub-pixels in the same first area is smaller than the length of the second area along the same direction.
15. The display device according to claim 14,
the display device further comprises a driving module, and the driving module is used for adjusting the light emitting color of the first area according to the current working state of the display device.
16. The display device according to claim 14,
the display device further comprises a driving module, and the driving module is used for adjusting the light-emitting area of the first area according to the current working state of the display device.
17. The display device according to claim 14,
the display device further comprises a driving module, and the driving module is used for adjusting the scanning frequency of the first area according to the current working state of the display device.
18. The display device according to claim 14,
the display device further comprises a driving module, and the driving module is used for adjusting the light emitting brightness of the first area according to the current working state of the display device.
19. The display device according to claim 13,
the first display area is circular in shape;
the first display area comprises a red sub-pixel and a green sub-pixel, and the red sub-pixel and the green sub-pixel are arranged along the circumferential direction of the first display area;
and the number of the first and second electrodes,
the red sub-pixels are arranged into a first ring along the circumferential direction of the first display area, and the green sub-pixels are arranged into a second ring along the circumferential direction of the first display area; one of the first and second rings has an inner diameter greater than an outer diameter of the other;
the red sub-pixels include first red sub-pixels and second red sub-pixels alternately arranged in a circumferential direction of the first display region, and the green sub-pixels include first green sub-pixels and second green sub-pixels alternately arranged in the circumferential direction of the first display region;
the display device further comprises a driving module, wherein the driving module is used for enabling the first red sub-pixel and the first green sub-pixel to be lightened and enabling the second red sub-pixel and the second green sub-pixel to be unlighted in a first period of a display cycle according to the current working state of the display device; in a second period of the display cycle, the first red and green subpixels are unlit and the second red and green subpixels are lit.
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| CN111627959B (en) | 2022-08-02 |
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