CN111833737A - Flexible display panel and display device - Google Patents
Flexible display panel and display device Download PDFInfo
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- CN111833737A CN111833737A CN202010405978.1A CN202010405978A CN111833737A CN 111833737 A CN111833737 A CN 111833737A CN 202010405978 A CN202010405978 A CN 202010405978A CN 111833737 A CN111833737 A CN 111833737A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
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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
Abstract
The invention discloses a flexible display panel and a display device, wherein the flexible display panel is provided with a first display area and a second display area, the light transmittance of the first display area is greater than that of the second display area, the flexible display panel comprises a device layer and a rigid auxiliary layer positioned on one side of the device layer, and the rigid auxiliary layer is positioned in the first display area. The first display area is provided with the rigidity auxiliary layer, so that the rigidity of the first display area can be improved, and the first display area is not easy to deform in the using process of the flexible display panel. When the flexible display panel is used for a display device and the first display area is correspondingly provided with the photosensitive assembly, the photosensitive assembly is a camera, for example. The first display area is not easy to deform, light distortion caused by deformation of the first display area is avoided, the shooting effect of the camera can be improved, and the camera is convenient to integrate under a screen.
Description
Technical Field
The invention relates to the field of display, in particular to a flexible display panel and a display device.
Background
With the rapid development of electronic devices, the requirements of users on screen occupation ratio are higher and higher, so that the comprehensive screen display of the electronic devices is concerned more and more in the industry.
Conventional electronic devices such as mobile phones, tablet computers, etc. need to integrate components such as front-mounted light-sensing components, earphones, infrared sensing components, etc. In the prior art, a groove (Notch) or an opening may be formed in the display screen, and external light may enter the photosensitive element located below the screen through the groove or the opening. However, these electronic devices are not all real full-screen, and cannot display in each area of the whole screen, for example, the area corresponding to the front photosensitive assembly cannot display a picture.
Disclosure of Invention
The embodiment of the invention provides a flexible display panel and a display device, which can realize that at least part of the area of the flexible display panel is light-permeable and can display, and are convenient for the under-screen integration of a photosensitive assembly.
The embodiment of the invention provides a flexible display panel, which is provided with a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area, the flexible display panel comprises a device layer and a rigid auxiliary layer positioned on one side of the device layer, and the rigid auxiliary layer is positioned in the first display area.
According to an aspect of the embodiments of the present invention, the flexible display panel further includes a substrate, the device layer is located on the substrate, and the rigid auxiliary layer is located on a side of the substrate facing away from the device layer.
According to an aspect of an embodiment of the present invention, the flexible display panel further includes: the pixel definition layer is positioned on the device layer and comprises a first pixel opening positioned in the first display area and a second pixel opening positioned in the second display area;
the first sub-pixel is positioned in the first display area and comprises a first light-emitting structure, a first electrode and a second electrode, the first light-emitting structure is positioned in the first pixel opening, the first electrode is positioned on one side, facing the substrate, of the first light-emitting structure, and the second electrode is positioned on one side, facing away from the substrate, of the first light-emitting structure.
According to an aspect of the embodiments of the present invention, the orthographic projection of each first light emitting structure on the substrate is composed of one first pattern unit or is composed of two or more first pattern units which are tiled, and the first pattern unit includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
According to an aspect of the embodiments of the present invention, the orthographic projection of each first electrode on the substrate is composed of one second pattern unit or is composed of a concatenation of two or more second pattern units, and the second pattern unit includes at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
According to an aspect of an embodiment of the present invention, the first electrode is a light-transmitting electrode.
According to an aspect of an embodiment of the invention, the first electrode is a reflective electrode.
According to an aspect of an embodiment of the present invention, the first electrode includes an indium tin oxide layer or an indium zinc oxide layer.
According to one aspect of an embodiment of the invention, the second electrode comprises a magnesium silver alloy layer.
In another aspect, an embodiment of the present invention provides a display device, which includes the flexible display panel according to any one of the above embodiments; and the photosensitive assembly is positioned in the first display area and acquires the optical information through the rigid auxiliary layer of the flexible display panel.
According to one aspect of the embodiment of the invention, the display device further comprises a buffer layer, the buffer layer and the device layer are arranged in a stacked mode, the buffer layer is provided with a through hole, the through hole is located in the first display area, the photosensitive assembly is used for obtaining optical information through the through hole, and the rigid auxiliary layer is located in the through hole.
According to one aspect of the embodiment of the invention, the thickness of the rigid auxiliary layer is smaller than that of the buffer layer, the rigid auxiliary layer is positioned on one side of the through hole close to the device layer, so that an accommodating space is formed on one side of the rigid auxiliary layer away from the device layer; at least part of the photosensitive assembly is positioned in the accommodating space.
According to an aspect of the embodiments of the present invention, the thickness of the rigid auxiliary layer is greater than the thickness of the buffer layer, and the rigid auxiliary layer is disposed to protrude from a side of the buffer layer facing away from the display device.
According to an aspect of the embodiment of the present invention, the optical module further includes a first light shielding member located at an end surface of the rigid auxiliary layer facing the photosensitive component, the first light shielding member including a first annular wall portion and a first hollow space surrounded by the first annular wall portion, so that the photosensitive component can acquire optical information via the first hollow space.
According to an aspect of the embodiment of the present invention, further comprising a second light shielding member in a ring shape;
the rigid auxiliary layer comprises a body part and a protruding part, the body part is positioned in the through hole, the protruding part extends out of the through hole, and the second light shielding part is arranged around the peripheral surface of the protruding part.
According to an aspect of the embodiment of the present invention, the second light shielding member extends from the outer peripheral surface of the projecting portion to the outer peripheral surface of the body portion.
According to an aspect of the embodiment of the present invention, the second light shielding member extends to the outer peripheral surface of the photosensitive member along the outer peripheral surface facing away from the body portion.
According to an aspect of an embodiment of the present invention, an orthogonal projection of the rigid auxiliary layer covers an orthogonal projection of the photosensitive member in a thickness direction of the display device.
According to the flexible display panel provided by the embodiment of the invention, the light transmittance of the first display area is greater than that of the second display area, so that the flexible display panel can integrate the photosensitive assembly on the back surface of the first display area, the screen-below integration of the photosensitive assembly such as the photosensitive assembly is realized, meanwhile, the first display area can display pictures, the display area of the flexible display panel is increased, and the comprehensive screen design of the display device is realized.
According to the flexible display panel provided by the embodiment of the invention, the flexible display panel comprises a device layer and a rigid auxiliary layer positioned on one side of the device layer, and the rigid auxiliary layer is positioned in the first display area. The first display area is provided with the rigidity auxiliary layer, so that the rigidity of the first display area can be improved, and the first display area is not easy to deform in the using process of the flexible display panel. When the flexible display panel is used for a display device and the first display area is correspondingly provided with the photosensitive assembly, the photosensitive assembly is a camera, for example. The first display area is not easy to deform, light distortion caused by deformation of the first display area is avoided, the shooting effect of the camera can be improved, and the camera is convenient to integrate under a screen.
Drawings
Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
FIG. 1 shows a schematic top view of a flexible display panel according to an embodiment of the invention;
FIG. 2 shows an enlarged partial view of an exemplary region Q of FIG. 1;
FIG. 3 illustrates an exemplary partial cross-sectional view A-A of FIG. 2;
FIG. 4 shows a partial cross-sectional view A-A of FIG. 2 of yet another example;
FIG. 5 shows a schematic top view of a display device according to an embodiment of the invention;
FIG. 6 illustrates an exemplary partial cross-sectional view of B-B of FIG. 5;
FIG. 7 shows a partial cross-sectional view of B-B of FIG. 5 of yet another example;
FIG. 8 illustrates a bottom view of yet another example display device;
fig. 9 shows a partial cross-sectional view of B-B of fig. 5 for yet another example.
Description of reference numerals:
100. a flexible display panel; 110. a first sub-pixel; 111. a first light emitting structure; 112. a first electrode; 113. a second electrode; 120. a second sub-pixel; 121. a second light emitting structure; 122. a third electrode; 123. a fourth electrode; 130. a first pixel circuit;
101. a substrate layer; 102. a device layer; 103. a pixel defining layer; 104. a rigid auxiliary layer; 105. a support film;
200. a photosensitive assembly;
300. a buffer layer; 310. a through hole;
400. a first light shielding member; 410. a first annular wall portion; 420. a first hollow space;
500. a second light shielding member;
AA1, first display area; AA2, second display area; NA, non-display area; k1, first pixel opening; k2, second pixel opening; z, thickness direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
On electronic devices such as mobile phones and tablet computers, photosensitive components such as a front photosensitive component, an infrared light sensor, a proximity light sensor, and the like need to be integrated on the side where the flexible display panel is provided. In some embodiments, a transparent display area may be disposed on the electronic device, and the photosensitive component is disposed on the back of the transparent display area, so that full-screen display of the electronic device is achieved under the condition that the photosensitive component is ensured to work normally.
Among the flexible display panels, the flexible display panel has high flexibility and is easily deformed by stress. One side when flexible display panel is provided with the photosensitive assembly, the regional deformation that if takes place corresponding to the photosensitive assembly on the flexible display panel can lead to the light distortion, influences the accuracy of the light information that photosensitive assembly obtained. For example, when the photosensitive assembly is a camera, if the region corresponding to the camera on the flexible display panel deforms, light distortion can be caused, so that image information acquired by the camera is distorted, and the shooting effect of the camera is affected.
In order to solve the above problems, embodiments of the present invention provide a flexible display panel and a display device, and the following describes embodiments of the flexible display panel and the display device with reference to the accompanying drawings.
Embodiments of the present invention provide a flexible display panel, which may be an Organic Light Emitting Diode (OLED) flexible display panel.
Fig. 1 illustrates a schematic top view of a flexible display panel according to an embodiment of the present invention, and fig. 2 illustrates an exemplary enlarged view of a portion of a region Q in fig. 1.
The flexible display panel 100 has a first display area AA1, a second display area AA2, and a non-display area NA surrounding the first display area AA1 and the second display area AA2, and the light transmittance of the first display area AA1 is greater than that of the second display area AA 2.
Herein, it is preferable that the light transmittance of the first display area AA1 is 15% or more. In order to ensure that the light transmittance of the first display area AA1 is greater than 15%, even greater than 40%, or even higher, the light transmittance of each functional film layer of the flexible display panel 100 in this embodiment is greater than 80%, and even at least some of the functional film layers are greater than 90%.
According to the flexible display panel 100 of the embodiment of the invention, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that photosensitive components can be integrated on the back surface of the flexible display panel 100 in the first display area AA1, and the photosensitive components such as the photosensitive components can be integrated under a screen, and meanwhile, the first display area AA1 can display pictures, so that the display area of the flexible display panel 100 is increased, and the comprehensive screen design of the display device is realized.
Referring to fig. 3, fig. 3 is a partial cross-sectional view taken along line a-a of fig. 2. In some alternative embodiments, the flexible display panel 100 includes a device layer 102 and a rigid auxiliary layer 104 positioned at one side of the device layer 102, and the rigid auxiliary layer 104 is positioned at the first display area AA 1.
In these alternative embodiments, the rigid auxiliary layer 104 can increase the rigidity of the first display area AA1, and the first display area AA1 is not easily deformed during the use of the flexible display panel 100. When the flexible display panel 100 is used in a display device, the first display area AA1 is correspondingly provided with the photosensitive assembly 200, and the photosensitive assembly 200 is, for example, a camera. First display area AA1 is difficult for taking place to warp, avoids because first display area AA1 takes place to warp and the light distortion that arouses, can improve the shooting effect of camera, and the screen of the camera of being convenient for is integrated down.
In some alternative embodiments, the flexible display panel 100 further comprises a substrate 101, and the device layer 102 is located on the substrate 101. The substrate 101 may be made of a light-transmitting material such as glass or Polyimide (PI).
The rigid auxiliary layer 104 may be disposed in various positions, and in some alternative embodiments, the rigid auxiliary layer 104 is located on a side of the substrate 101 facing away from the device layer 102. In these alternative embodiments, the substrate 101 is disposed between the rigid auxiliary layer 104 and the device layer 102 in a spaced-apart manner, so that the rigid auxiliary layer 104 does not affect the normal operation of the device layer 102 while performing a supporting function.
Referring also to fig. 4, fig. 4 is a cross-sectional view taken along line a-a of fig. 2 according to another example. In some alternative embodiments, the flexible display panel 100 further comprises a support film 105, the support film 105 being located on the substrate 101 at a side opposite the device layer 102.
As shown in fig. 3, the rigid auxiliary layer 104 may be disposed on a surface of the support film 105 facing away from the substrate 101. Alternatively, as shown in fig. 4, the rigid auxiliary layer 104 is disposed on a surface of the substrate 101 away from the device layer 102, the support film 105 is provided with a recess, and the rigid auxiliary layer 104 is located in the recess.
The rigid auxiliary layer 104 can be formed in various ways, and in some alternative embodiments, the substrate 101 is usually disposed on a rigid substrate and the device layer 102 is formed on the substrate 101 during the manufacturing process of the flexible display panel 100. In the process of peeling the substrate 101 from the rigid base plate, a part of the rigid base plate may be left and made to function as the rigid auxiliary layer 104. Alternatively, the substrate 101 may be completely peeled off from the rigid substrate, and a rigid support layer may be attached to the substrate 101. Alternatively, after the substrate 101 is completely peeled off from the rigid board, the support film 105 is attached to the substrate 101, and the rigid auxiliary layer 104 is attached to the side of the support film 105 facing away from the substrate 101.
The material of the rigid auxiliary layer 104 includes, for example, glass, rigid plastic, and the like. As long as the rigid auxiliary layer 104 has high structural strength, the display device layer 102 and the substrate 101 can be supported so that the region corresponding to the rigid auxiliary layer 104 is hard to be deformed.
In some alternative embodiments, the flexible display panel 100 further includes a first sub-pixel 110 located in the first display area AA1 and a second sub-pixel 120 located in the second display area AA 2. The arrangement of the first sub-pixels 110 and the arrangement of the second sub-pixels 120 may be the same.
Alternatively, in some alternative embodiments, the distribution density of the first sub-pixels 110 is less than the distribution density of the second sub-pixels 120. The distribution density of the first sub-pixels 110 in the first display area AA1 is small, so that the number of the driving signal lines in the first display area AA1 can be reduced, and the light transmittance of the first display area AA1 can be improved. Facilitating the sub-screen integration of the photosensitive assembly 200.
The distribution density of the first sub-pixels 110 refers to the number of the first sub-pixels 110 distributed in a unit area in the first display. The distribution density of the second sub-pixels 120 refers to the distribution number of the second sub-pixels 120 in the second display area AA 2.
The first subpixel 110 may be any one of a red subpixel, a blue subpixel, and a yellow subpixel. The second sub-pixel 120 may be any one of a red sub-pixel, a blue sub-pixel, and a yellow sub-pixel.
In some alternative embodiments, a pixel driving circuit is disposed in the device layer 102, for example, and the pixel driving circuit is used to drive the sub-pixels of the flexible display panel 100 to emit light and display.
In some embodiments, the pixel circuit includes a first pixel circuit 130, and the first pixel circuit 130 is electrically connected to the first sub-pixel 110 for driving the first sub-pixel 110 to display. In fig. 2, a position of one of the first pixel circuits 130 is exemplarily shown, and is electrically connected to the corresponding first sub-pixel 110, it is understood that the number of the first pixel circuits 130 may be multiple, and the first pixel circuits are respectively electrically connected to the corresponding first sub-pixels 110.
In some embodiments, the circuit structure of the first pixel circuit 130 is any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit. Herein, the "2T 1C circuit" refers to a pixel circuit including 2 thin film transistors (T) and 1 capacitor (C) in the pixel circuit, and the other "7T 1C circuit", "7T 2C circuit", "9T 1C circuit", and the like are analogized.
According to the flexible display panel 100 of the embodiment of the invention, the first pixel circuit 130 for driving the first sub-pixel 110 to display may be located in the second display area AA2, so as to reduce the wiring structure in the first display area AA1, thereby improving the light transmittance of the first display area AA 1.
In some embodiments, the flexible display panel 100 may further include a second pixel circuit (not shown), which is located in the second display area AA2 and electrically connected to the second sub-pixel 120, for driving the second sub-pixel 120 to display. In some embodiments, the circuit structure of the second pixel circuit may be any one of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit.
In some embodiments, the size of the first sub-pixel 110 is smaller than that of the second sub-pixel 120 of the same color, so that the area of the non-light emitting region in the first display region AA1 is larger, which facilitates further improving the light transmittance of the first display region AA 1. It is understood that in other embodiments, the size of the first sub-pixel 110 may be the same as the size of the second sub-pixel 120 of the same color.
In some embodiments, the flexible display panel 100 further comprises a pixel definition layer 103. The pixel definition layer 103 is located on the device layer 102.
The pixel defining layer 103 includes a first pixel opening K1 located in the first display area AA1 and a second pixel opening K2 located in the second display area AA 2.
In some embodiments, the first subpixel 110 includes a first light emitting structure 111, a first electrode 112, and a second electrode 113. The first light emitting structure 111 is located in the first pixel opening K1, the first electrode 112 is located on a side of the first light emitting structure 111 facing the substrate 101, and the second electrode 113 is located on a side of the first light emitting structure 111 facing away from the substrate 101. One of the first electrode 112 and the second electrode 113 is an anode, and the other is a cathode.
In some embodiments, the second subpixel 120 includes a second light emitting structure 121, a third electrode 122, and a fourth electrode 123. The second light emitting structure 121 is located in the second pixel opening K2, the third electrode 122 is located on a side of the second light emitting structure 121 facing the substrate 101, and the fourth electrode 123 is located on a side of the second light emitting structure 121 facing away from the substrate 101. One of the third electrode 122 and the fourth electrode 123 is an anode, and the other is a cathode.
In this embodiment, the first electrode 112, the third electrode 122, the second electrode 113, and the fourth electrode 123 are described as an example of an anode, a cathode, and the like.
The first and second light emitting structures 111 and 121 may respectively include an OLED display device, and each may further include at least one of a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer according to design requirements of the first and second light emitting structures 111 and 121.
In some embodiments, the first electrode 112 is a light transmissive electrode. In some embodiments, the first electrode 112 includes an Indium Tin Oxide (ITO) layer or an Indium zinc Oxide (izo) layer. In some embodiments, the first electrode 112 is a reflective electrode, and includes a first light-transmissive conductive layer, a reflective layer on the first light-transmissive conductive layer, and a second light-transmissive conductive layer on the reflective layer. The first and second transparent conductive layers may be ITO, indium zinc oxide, etc., and the reflective layer may be a metal layer, such as made of silver. The third electrode 122 may be formed of the same material as the first electrode 112.
In some embodiments, the second electrode 113 comprises a magnesium silver alloy layer. The fourth electrode 123 may be formed of the same material as the second electrode 113. In some embodiments, the second and fourth electrodes 113 and 123 may be interconnected as a common electrode.
In some embodiments, the orthographic projection of each first light emitting structure 111 on the substrate 101 is composed of one first pattern unit or is composed of a concatenation of more than two first pattern units, the first pattern units comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, a rectangle.
In some embodiments, the orthographic projection of each first electrode 112 on the substrate 101 is composed of one second pattern unit or is composed of a concatenation of two or more second pattern units, the second pattern units comprising at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd, and a rectangle.
For example, the flexible display panel 100 may further include an encapsulation layer, and a polarizer and a cover plate located above the encapsulation layer, or the cover plate may be directly disposed above the encapsulation layer, without disposing a polarizer, or at least the cover plate may be directly disposed above the encapsulation layer of the first display area AA1, without disposing a polarizer, so as to avoid the polarizer from affecting the light collection amount of the photosensitive element disposed below the first display area AA1, and of course, the polarizer may also be disposed above the encapsulation layer of the first display area AA 1.
The embodiment of the present invention further provides a display device, which may include the flexible display panel 100 of any of the above embodiments. The following description will be given taking as an example a display device of an embodiment, which includes the flexible display panel 100 of the above-described embodiment.
Fig. 5 is a schematic top view illustrating a display device according to an embodiment of the present invention, and fig. 6 is a cross-sectional view taken along line B-B of fig. 8. In the display device of the present embodiment, the flexible display panel 100 may be the flexible display panel 100 of one of the above embodiments, the flexible display panel 100 has a first display area AA1 and a second display area AA2, and the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA 2.
The flexible display panel 100 includes a first surface and a second surface opposite to each other, wherein the first surface is a display surface. The display device further includes a photosensitive assembly 200, the photosensitive assembly 200 is located on the second surface side of the flexible display panel 100, the photosensitive assembly 200 corresponds to the first display area AA1, and the light information is acquired through the rigid auxiliary layer 104 of the flexible display panel 100.
The photosensitive assembly 200 may be an image capturing device for capturing external image information. In this embodiment, the photosensitive assembly 200 is a Complementary Metal Oxide Semiconductor (CMOS) image capture device, and in some other embodiments, the photosensitive assembly 200 may also be a Charge-coupled device (CCD) image capture device or other types of image capture devices. It is understood that the photosensitive assembly 200 may not be limited to an image capture device, for example, in some embodiments, the photosensitive assembly 200 may also be an infrared sensor, a proximity sensor, an infrared lens, a flood sensing element, an ambient light sensor, a dot matrix projector, and the like. In addition, the display device may further integrate other components, such as an earpiece, a speaker, etc., on the second surface of the flexible display panel 100.
According to the display device provided by the embodiment of the invention, the light transmittance of the first display area AA1 is greater than that of the second display area AA2, so that the flexible display panel 100 can integrate the photosensitive component 200 on the back of the first display area AA1, for example, the photosensitive component 200 of an image acquisition device is integrated under a screen, and meanwhile, the first display area AA1 can display a picture, so that the display area of the flexible display panel 100 is increased, and the overall screen design of the display device is realized.
The flexible display panel 100 is provided with the rigid auxiliary layer 104 in the first display area AA1, so that the rigidity of the first display area AA1 can be improved, light distortion caused by bending of the first display area AA1 is avoided, and accuracy of optical information acquired by the photosensitive assembly 200 is further ensured.
In some alternative embodiments, the orthographic projection of the rigid auxiliary layer 104 covers the orthographic projection of the photosensitive member 200 in the thickness direction (Z direction in fig. 6) of the display device. In these optional embodiments, the rigid auxiliary layer 104 can at least cover the orthographic projection of the photosensitive assembly 200, and it can be ensured that the rigid auxiliary layer 104 is disposed in the region corresponding to the photosensitive assembly 200, thereby improving the accuracy of the optical information acquired by the photosensitive assembly 200.
In some optional embodiments, the display device further includes a buffer layer 300, the buffer layer 300 is stacked on the substrate 101, a through hole 310 is formed in the buffer layer 300, the through hole 310 is located in the first display area AA1, the photosensitive assembly 200 is configured to obtain optical information through the through hole 310, and the rigid auxiliary layer 104 is located in the through hole 310. The material of the cushioning layer 300 includes, for example, foam or the like.
In these alternative embodiments, the rigid auxiliary layer 104 is located in the through hole 310 of the buffer layer 300, so as to avoid a gap between the buffer layer 300 and the flexible display panel 100 due to the oversized rigid auxiliary layer 104.
Continuing to refer to fig. 6, in some alternative embodiments, the thickness of the rigid auxiliary layer 104 is smaller than that of the buffer layer 300, and the rigid auxiliary layer 104 is located at a side of the through hole 310 close to the device layer 102 to form a receiving space at a side of the rigid auxiliary layer 104 away from the device layer 102; at least a portion of the photosensitive assembly 200 is located in the accommodating space.
In these optional embodiments, the rigid auxiliary layer 104 and the photosensitive component 200 are sequentially disposed along the thickness direction, and at least a portion of the photosensitive component 200 is located in the through hole 310, so that the photosensitive component 200 can be prevented from being affected by external light to obtain optical information by shielding of the buffer layer 300.
Referring also to fig. 7, fig. 7 is a partial cross-sectional view taken at B-B of fig. 5 according to another example. In other alternative embodiments, the thickness of the rigid auxiliary layer 104 is greater than the thickness of the buffer layer 300, and the rigid auxiliary layer 104 is disposed to protrude from a side of the buffer layer 300 facing away from the display device. The thickness of the rigid auxiliary layer 104 is relatively thick, which can ensure that the rigid auxiliary layer 104 has sufficient rigidity.
Referring to fig. 8, fig. 8 is a top view of another example of a display device. And the photosensitive element 200 in the top view is omitted in order to better show the structure of the first light shielding member 400. In some optional embodiments, the display device further includes a first light shielding member 400, the first light shielding member 400 is located at an end surface of the rigid auxiliary layer 104 facing the photosensitive assembly 200, and the first light shielding member 400 includes a first annular wall portion 410 and a first hollow space 420 enclosed by the first annular wall portion 410, so that the photosensitive assembly 200 can obtain the light information through the first hollow space 420.
In these alternative embodiments, the first light shielding member 400 is located on the end surface of the rigid auxiliary layer 104 facing the photosensitive component 200, and when the photosensitive component 200 obtains the optical information through the first hollow space 420, the first annular wall portion 410 of the first light shielding member 400 can shield external light, so as to prevent the external light from affecting the normal operation of the photosensitive component 200, and further improve the accuracy of the optical information obtained by the photosensitive component 200.
In fig. 8, the end surface of the rigid auxiliary layer 104 is circular, and the end surface of the rigid auxiliary layer 104 may be not only circular but also other shapes. The first light shielding member 400 has an annular shape in fig. 8, and the shape of the first light shielding member 400 may be not only an annular shape but also an annular structure having another shape as long as the first light shielding member 400 can be provided on the end surface of the rigid auxiliary layer 104 and around the edge of the rigid auxiliary layer 104.
Referring to fig. 9, fig. 9 is a partial cross-sectional view taken at B-B of fig. 5 according to yet another example. In other alternative embodiments, the display device further includes a second light blocking member 500; the rigid auxiliary layer 104 includes a main portion and a protruding portion, the main portion is located in the through hole 310, the protruding portion extends from the through hole 310, and the second light shielding member 500 is disposed around an outer peripheral surface of the protruding portion.
In these optional embodiments, the second light shielding member 500 surrounds the outer peripheral surface of the protruding portion, and can shield external light from entering the protruding portion, so as to prevent the external light from affecting the normal operation of the photosensitive assembly 200, and further improve the accuracy of the optical information acquired by the photosensitive assembly 200.
In some alternative embodiments, the second light shielding member 500 extends from the outer circumferential surface of the protruding portion to the outer circumferential surface of the body portion. Alternatively, in other alternative embodiments, the second light shielding member 500 extends from the outer circumferential surface of the protruding portion to the outer circumferential surface of the photosensitive assembly 200. In these alternative embodiments, the size of the second light shielding member 500 is large enough to ensure the light shielding effect of the second light shielding member 500.
The first and second light shielding members 400 and 500 may be provided in the display device at the same time, or the display device includes one of the first and second light shielding members 400 and 500. The materials of the first light shielding member 400 and the second light shielding member 500 may be the same or different. The material of the first light shielding member 400 includes, for example, a light shielding rubber, and the first light shielding member 400 is, for example, a black rubber pad. The material of the second light shielding member 500 includes, for example, a light shielding rubber, and the second light shielding member 500 is, for example, a black rubber ring.
In accordance with the above-described embodiments of the present invention, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The flexible display panel is characterized by comprising a first display area and a second display area, wherein the light transmittance of the first display area is greater than that of the second display area, the flexible display panel comprises a device layer and a rigid auxiliary layer positioned on one side of the device layer, and the rigid auxiliary layer is positioned in the first display area.
2. The flexible display panel of claim 1, further comprising a substrate, the device layer being on the substrate, the rigid auxiliary layer being on a side of the substrate facing away from the device layer.
3. The flexible display panel of claim 2, further comprising:
a pixel definition layer on the device layer, the pixel definition layer including a first pixel opening in the first display region and a second pixel opening in the second display region;
a first sub-pixel located in the first display region, the first sub-pixel including a first light emitting structure, a first electrode and a second electrode, the first light emitting structure being located in the first pixel opening, the first electrode being located on a side of the first light emitting structure facing the substrate, the second electrode being located on a side of the first light emitting structure facing away from the substrate;
preferably, the orthographic projection of each first light-emitting structure on the substrate is composed of one first graphic unit or is composed of more than two first graphic units which are spliced, and the first graphic units comprise at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd and a rectangle;
preferably, the orthographic projection of each first electrode on the substrate is composed of one second graphic unit or is composed of more than two second graphic units in a splicing manner, and the second graphic units comprise at least one selected from the group consisting of a circle, an ellipse, a dumbbell, a gourd and a rectangle;
preferably, the first electrode is a light-transmitting electrode;
preferably, the first electrode is a reflective electrode;
preferably, the first electrode comprises an indium tin oxide layer or an indium zinc oxide layer;
preferably, the second electrode comprises a magnesium silver alloy layer.
4. A display device, comprising:
the flexible display panel of any one of claims 1-3;
and the photosensitive assembly is positioned in the first display area and penetrates through the rigid auxiliary layer of the flexible display panel to acquire optical information.
5. The display device according to claim 4, further comprising a buffer layer, wherein the buffer layer and the device layer are stacked, a through hole is formed in the buffer layer, the through hole is located in the first display area, the photosensitive assembly is configured to obtain the optical information through the through hole, and the rigid auxiliary layer is located in the through hole.
6. The display device according to claim 5,
the thickness of the rigid auxiliary layer is smaller than that of the buffer layer, the rigid auxiliary layer is positioned on one side, close to the device layer, of the through hole, and an accommodating space is formed on one side, away from the device layer, of the rigid auxiliary layer;
at least part of the photosensitive assembly is positioned in the accommodating space.
7. A display device as claimed in claim 5, characterized in that the thickness of the rigid auxiliary layer is greater than the thickness of the buffer layer, the rigid auxiliary layer being arranged protruding from a side of the buffer layer facing away from the display device.
8. The display device according to claim 7, further comprising a first light shielding member located at an end surface of the rigid auxiliary layer facing the photosensitive member, the first light shielding member comprising a first annular wall portion and a first hollow space enclosed by the first annular wall portion, so that the photosensitive member can acquire the light information through the first hollow space.
9. The display device according to claim 8,
the light shielding component also comprises a second annular light shielding component;
the rigid auxiliary layer comprises a body part and a protruding part, the body part is positioned in the through hole, the protruding part extends out of the through hole, and the second light shielding part is arranged around the peripheral surface of the protruding part;
preferably, the second light shielding member extends from an outer peripheral surface of the projecting portion to an outer peripheral surface of the main body portion;
preferably, the second light shielding member extends to the outer peripheral surface of the photosensitive assembly along the outer peripheral surface facing away from the main body.
10. The display device according to claim 4, wherein an orthographic projection of the rigid auxiliary layer covers an orthographic projection of the photosensitive member in a thickness direction of the display device.
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| CN202010405978.1A CN111833737A (en) | 2020-05-14 | 2020-05-14 | Flexible display panel and display device |
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