CN115331561A - Display module and display device - Google Patents
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- CN115331561A CN115331561A CN202211069065.2A CN202211069065A CN115331561A CN 115331561 A CN115331561 A CN 115331561A CN 202211069065 A CN202211069065 A CN 202211069065A CN 115331561 A CN115331561 A CN 115331561A
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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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- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
- G09F9/335—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 being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
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Abstract
The application provides a display module assembly and display device relates to and shows technical field for solve the regional technical problem that luminance reduction and colourity change can appear in the bending region of flexible display panel. The display panel comprises a flexible display panel, a functional layer and a cover plate, wherein the functional layer covers the light emergent side of the flexible display panel, the cover plate is arranged on the functional layer, the flexible display panel and the functional layer are provided with a first display area and at least one second display area which are connected, and the second display area is bent towards the direction far away from the cover plate; an optical structure is arranged between the light-emitting side of the second display area and the cover plate, and the refractive index of the optical structure is smaller than that of the cover plate and smaller than that of the functional layer; the thickness of the optical structure gradually increases along the first direction. The display module can reduce the technical problems of the reduction of the brightness of the second display area and the change of the chromaticity.
Description
Technical Field
The embodiment of the application relates to the technical field of display, in particular to a display module and a display device.
Background
With the development of display technology, display devices such as mobile phones and tablet computers with higher screen occupation ratio are receiving wide attention of people. In the correlation technique, the scheme of buckling is carried out to flexible display panel's display area to the edge that makes display module assembly can show the image, thereby makes display device realize the frameless and shows, and then improves display device's screen and accounts for than. However, in the display module adopting the above scheme, the bending region of the flexible display panel has the technical problems of reduced brightness and changed chromaticity.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a display module and a display device to solve the technical problems of luminance reduction and chromaticity variation in a bending region of a display panel.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
a first aspect of an embodiment of the present application provides a display module, including a flexible display panel, a functional layer covering a light exit side of the flexible display panel, and a cover plate disposed on the functional layer, where the flexible display panel and the functional layer have a first display area and at least one second display area connected to each other, and the second display area is bent in a direction away from the cover plate; an optical structure is arranged between the light-emitting side of the second display area and the cover plate, and the refractive index of the optical structure is smaller than that of the cover plate and smaller than that of the functional layer; the thickness of the optical structure gradually increases along a first direction; the first direction is parallel to the first display area and is perpendicular to the bending axis of the second display area.
According to the display module, light emitted by pixels in the second display area sequentially passes through the functional layer, the optical structure and the cover plate to be incident to human eyes. Because the second display area is bent, the interface of the functional layer and the optical structure is a curved surface; and along the first direction, the thickness of the optical structure gradually increases; meanwhile, the refractive index of the optical structure is smaller than that of the functional layer and that of the cover plate, so that a lens structure is formed among the functional layer, the optical structure and the cover plate. Light rays emitted by pixels in the flexible display panel are deflected towards the first display area under the action of the lens structure and enter human eyes. Therefore, compared with the related art, the light received by the human eye is the light with smaller angle emitted by the pixels in the flexible display panel. The smaller the light emitting angle of the light emitted by the pixel is, the smaller the brightness attenuation and the color deviation are, so that the technical problems of the reduction of the brightness and the change of the chromaticity of the second display area are solved.
In some possible implementations, the optical structure is a layer of air.
In some possible implementations, the optical structure is a transparent solid dielectric layer.
In some possible implementations, the transparent solid medium layer is a first optical adhesive layer, and the functional layer and the cover plate are bonded by the first optical adhesive layer.
In some possible implementations, a surface of the cover plate contacting the optical structure is a first arc surface bent toward the second display area.
In some possible implementations, a surface of the cover plate contacting the optical structure is a first plane parallel to the first display area.
In some possible implementations, a surface of the cover plate facing away from the second display area is a second plane parallel to the first display area, or a second arc surface bending toward the second display area.
In some possible implementation manners, the display module further includes a second optical adhesive layer located between the first display area and the cover plate, and the second optical adhesive layer is bonded to the cover plate and the first display area and is in butt joint with the optical structure.
In some possible implementation manners, the functional layer includes a touch layer and a polarizing layer stacked on the light exit side of the flexible display panel, and refractive indexes of the touch layer and the polarizing layer are both greater than that of the optical structure.
A second aspect of the embodiments of the present application provides a display device, including the display module described in any one of the above.
The display device of the embodiment of the application also has the advantages of any one of the display modules, and the display device comprises any one of the display modules, so that the display device is not repeated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of a display module according to the related art;
fig. 2 is a schematic top view of a display module hiding cover plate, a second optical adhesive layer and an optical structure in some implementations of the disclosure;
fig. 3 is a schematic top view of a display module hiding cover plate, a second optical adhesive layer and an optical structure according to another implementation manner of the embodiment of the present application;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a reverse optical path diagram of the display module shown in FIG. 4;
FIG. 6 is a schematic cross-sectional view of a structure at B-B in other implementations of embodiments of the present application;
FIG. 7 is a schematic cross-sectional view of a structure at B-B in other implementations of embodiments of the present application;
fig. 8 is a diagram illustrating the result of optical simulation performed on the display module shown in fig. 6.
Description of the reference numerals:
10. a flexible display panel;
110. a support layer;
111. a first support section;
112. a second support portion;
120. a heat dissipation layer;
130. a buffer layer;
20. a functional layer;
210. a touch layer;
220. a polarizing layer;
30. a cover plate;
310. a first arc surface;
320. a first plane;
330. a second plane;
40. a second optical adhesive layer;
50. an optical structure;
510. a transparent solid dielectric layer.
Detailed Description
The display module is a key component for displaying images in display devices such as mobile phones and tablet computers. In the related art, referring to fig. 1, the display module generally includes a flexible display panel 10, a functional layer 20 covering a light emitting side of the flexible display panel 10, and a cover plate 30 disposed on the functional layer 20. In order to increase the screen ratio of the display device, a scheme of bending the display regions of the flexible display panel 10 and the functional layer 20 is generally adopted. For example, as shown in fig. 1, the flexible display panel 10 and the functional layer 20 include a first display area AA1, a second display area AA2, and a non-display area NA connected to each other, and the second display area AA2 is bent to make the non-display area NA located on the backlight side of the first display area AA1. The cover plate 30 is adhered to the first display area AA1 and the second display area AA2 by the second optical adhesive layer 40. The refractive indices of the functional layer 20, the cover plate 30, and the second optical cement layer 40 are approximately equal. The second display area AA2 is located at the edge of the display module, light emitted by the second display area AA2 enters human eyes after being emitted through the functional layer 20, the second optical adhesive layer 40 and the cover plate 30 in sequence, so that the edge of the display module can display images, the display device can achieve frameless display, and the screen occupation ratio of the display device is increased.
As described in the background art, the display module in the related art has the technical problems of reduced brightness and changed chromaticity in the bending region of the flexible display panel. The inventor has found that the reason is that when the display module displays an image, the display module is viewed from the forward direction of the display module, and for the second display area AA2, because the second display area AA2 is bent, the light entering the human eye is the light with a larger light emitting angle emitted by the pixels in the second display area AA 2. For the first display area AA1, the first display area AA1 is a plane, and light entering human eyes is light with a smaller light emitting angle emitted by pixels in the first display area AA1. For example, as shown in fig. 1, the light emitting angle of the light entering the human eye of the second display area AA2 is α, and the light emitting angle of the light entering the human eye of the first display area AA1 is 0.
The larger the light emitting angle of the light emitted by the pixels in the flexible display panel is, the larger the luminance attenuation and the color deviation are, so that the luminance brightness emitted by the second display area AA2 is reduced and the chromaticity is changed compared with that emitted by the first display area AA1, that is, the technical problem that the luminance brightness is reduced and the chromaticity is changed occurs in the bent area of the flexible display panel is solved. The light emitting angle is an angle between a light ray and a normal direction of the flexible display panel 10.
To solve the above technical problem, the display module of the embodiment of the present application, through setting up the optical structure that the refractive index is less than apron and functional layer between functional layer and apron, and along being parallel first display area and with the perpendicular direction of the bending axis of second display area, the thickness of optical structure increases gradually for form lens structure between functional layer, optical structure and the apron, this lens structure can make the less light ray of luminous angle that the pixel in the second display area sent deflect to the direction of first display area AA1, makes it get into people's eye, thereby alleviates the regional luminance reduction of buckling and the technical problem that the colourity changes of flexible display panel.
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely illustrative of the contents of the embodiments of the present application. And like reference numerals refer to like or similar elements or elements having like or similar functions throughout.
In general, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 2, fig. 3 and fig. 4, an embodiment of the present disclosure provides a display module, which includes a flexible display panel 10, a functional layer 20 covering a light emitting side of the flexible display panel 10, and a cover plate 30 disposed on the functional layer 20. The flexible display panel 10 is used to display an image. The functional layer 20 is used for implementing other functions of the display module, such as touch control, anti-reflection, and the like. The cover plate 30 is disposed on the functional layer 20, and is used for protecting the functional layer 20 and the flexible display panel 10, and preventing the functional layer 20 and the flexible display panel 10 from being damaged and affecting the service life of the display module.
The light exit side of the flexible display panel 10 refers to a side of the flexible display panel 10 that can emit light.
The flexible display panel 10 is used to display an image and has a bendable function. Exemplarily, the flexible display panel 10 may be an Organic Light Emitting Diode (OLED) display panel. The flexible display panel 10 may include a flexible substrate and a display layer. The flexible substrate provides a supporting function for each film layer positioned above the flexible substrate, and the flexible substrate can be bent. Illustratively, the material of the flexible substrate may include at least one of Polyimide (PI), polyethylene Terephthalate (PET), and Polyethylene naphthalate (PEN).
The display layer may include a driving array layer, a light emitting material layer, and an encapsulation layer sequentially stacked on the flexible substrate. The driving array layer is provided with a plurality of thin film transistors which are regularly arranged. The light emitting material layer is arranged on the driving array layer and provided with a plurality of pixels which are arranged in an array mode, the pixel array and the thin film transistor array are correspondingly arranged and electrically connected, so that the pixels are controlled through the thin film transistors, and display of images is achieved. The encapsulating layer is disposed on the light emitting material layer and is used for encapsulating the light emitting material layer to prevent external moisture, oxygen, and the like from entering the light emitting material layer to affect the display performance of the flexible display panel 10.
It is understood that the flexible display panel 10 may also be other types of display panels with flexibility, which is not described in detail in this embodiment of the application.
Referring to fig. 2 and 3, the stacked flexible display panel 10 and the functional layer 20 have a first display area AA1 and at least one second display area AA2 connected to each other, and the second display area AA2 is bent away from the cover 30. The bent second display area AA2 enables the edge area of the display module to have a display function, so that the screen ratio of the display device is improved.
Referring to fig. 2, in some implementations of the embodiment of the present application, there may be one second display area AA2, and one second display area AA2 may be connected to one side of the first display area AA1, for example, below the first display area AA1, so that the lower edge area of the display module has a display function, thereby removing a lower frame of the display device.
Referring to fig. 3, in another implementation manner of the embodiment of the present application, there may be two second display areas AA2, and the two second display areas AA2 may be respectively connected to two sides of the first display area AA1, for example, the left and right sides of the first display area AA1, so that the two side edge areas of the display module have a display function, and frames on the left and right sides of the display device are removed.
It can be understood that the number of the second display areas AA2 may also be three or four, and the three or four second display areas AA2 may be connected to different sides of the first display area AA1, so that the edge areas of different sides of the display device have a display function, thereby removing the frames on different sides of the display device, which is not described herein again in this embodiment of the present application.
Illustratively, the functional layer 20 may include a touch layer 210 and a polarizing layer 220 stacked on the light-emitting side of the flexible display panel 10. The touch layer 210 is used for implementing a touch function of the display module. The polarizing layer 220 is used to eliminate the ambient light reflected by the electrodes in the driving array layer in the flexible display panel 10, so as to ensure the display effect of the flexible display panel 10. It is understood that the functional layer 20 may further include other film layers, which are not described in detail in this embodiment of the application.
Referring to fig. 4, an optical structure 50 may be disposed between the light emitting side of the second display area AA2 and the cover plate 30, and the refractive index of the optical structure 50 is less than that of the cover plate 30. And the refractive index of the optical structure 50 is smaller than that of the functional layer 20, for example, when the functional layer 20 includes the touch layer 210 and the polarization layer 220, the refractive indexes of the touch layer 210 and the polarization layer 220 are both larger than that of the optical structure 50. The thickness of the optical structure 50 gradually increases along the first direction.
Note that, the first direction is parallel to the first display area AA1 and perpendicular to the bending axis of the second display area AA2, i.e., the x direction shown in fig. 4, and is hereinafter referred to as a first direction x. The bending axis refers to an axis around which the second display area AA2 is bent. That is, the second display area AA2 is bent around the bending axis. For example, as shown in fig. 4, the bending axis is parallel to the y-direction.
Light emitted from the pixels in the second display area AA2 sequentially passes through the functional layer 20, the optical structure 50 and the cover plate 30 to be incident to human eyes. Because the second display area AA2 is bent, the interface between the functional layer 20 and the optical structure 50 is a curved surface; and the thickness of the optical structure 50 gradually increases along the first direction x; meanwhile, the refractive index of the optical structure 50 is smaller than the refractive index of the functional layer 20 and smaller than the refractive index of the cover plate 30, so that a lens structure is formed among the functional layer 20, the optical structure 50 and the cover plate 30. The lens structure can make the light emitted by the pixels of the flexible display panel 10 with a smaller light emitting angle enter human eyes. Therefore, the light received by the human eye is the light emitted by the pixels in the flexible display panel 10 with a smaller angle than the related art. The smaller the light emitting angle of the light emitted by the pixel is, the smaller the luminance attenuation and the color deviation are, so that the technical problems of the luminance reduction and the chromaticity change of the second display area AA2 are solved.
In some implementations of embodiments of the present application, referring to fig. 4, a surface of the cover plate 30 contacting the optical structure 50 may be a first arc surface 310 curved toward the second display area AA 2.
Taking light entering human eyes perpendicularly as an example, referring to fig. 1, in the related art, when the display module displays an image, the display module is viewed from the forward direction of the display module, that is, from the light emergent direction of the display module, because the refractive indexes of the functional layer 20, the second optical adhesive layer 40 and the cover plate 30 are approximately equal, the light E emitted from the point C of the flexible display panel 10 passes through the functional layer 20, the second optical adhesive layer 40 and the cover plate 30 in sequence without deflection, and then enters human eyes perpendicularly. Therefore, the light ray received by the human eye is the light ray E with the light emitting angle α emitted by the point C pixel.
Referring to fig. 5, a light ray perpendicularly entering the human eye may be taken as a perpendicular incident light ray H1 according to the principle that the optical path is reversible. When the incident light H1 propagates in the cover 30 and enters the junction between the cover 30 and the optical structure 50, because the surface of the cover 30 contacting the optical structure 50 is the first arc surface 310 curved toward the second display area AA2 and the refractive index of the optical structure 50 is smaller than that of the cover 30, the light G1 exiting from the junction between the cover 30 and the optical structure 50 is slightly deflected in a direction away from the first display area AA1.
The light ray G1 continues to propagate in the optical structure 50, and when the light ray G enters the boundary between the optical structure 50 and the functional layer 20, because the surface of the optical structure 50 in contact with the functional layer 20 is a curved surface with a curvature larger than that of the first arc surface 310, and the refractive index of the optical structure 50 is smaller than that of the functional layer 20, the light ray F1 emitted from the boundary between the optical structure 50 and the functional layer 20 is deflected toward the direction close to the first display area AA1. And the deflection angle of the light ray F1 is greater than the deflection angle of the light ray G1, so that the light ray F1 deflects toward the first display area AA1 compared with the incident light ray H1. The light ray F1 continues to propagate in the functional layer 20 and is incident on the point D of the flexible display panel 10. The light ray F1 forms an angle beta with the normal of the point D. Since the light ray F1 is deflected in the direction of the first display area AA1 compared to the incident light ray H1, β is smaller than α.
According to the principle of reversible optical path, the optical path shown in fig. 5 is reversed, namely the optical path in fig. 4. Therefore, the light received by human eyes is the light H with the light emitting angle β emitted by the D-point pixel of the flexible display panel 10. That is, the light received by the human eye is light with a small light emitting angle. Therefore, the display module of the embodiment of the application can reduce the technical problems of reduced brightness and changed chromaticity of the second display area.
In other implementations of the embodiments of the present application, referring to fig. 6, a surface of the cover plate 30 contacting the optical structure 50 may also be a first plane 320 parallel to the first display area AA1. Light entering the human eye vertically may not be deflected before being incident on the boundary between the optical structure 50 and the cover plate 30. The light entering the human eye is the light emitted from the point J of the flexible display panel 10 with a light emitting angle γ, where γ is smaller than β. That is, when the surface of the cover 30 contacting the optical structure 50 is the first arc surface 310, and the surface of the cover 30 contacting the optical structure 50 is the first plane 320, the light received by the human eye is the light with a smaller light emitting angle, so that the technical problems of the luminance reduction and the chromaticity change of the second display area can be further reduced.
In addition, the surface of the cover plate 30 contacting the optical structure 50 is the first plane 320, which can also reduce the processing difficulty of the cover plate 30, and reduce the process steps for manufacturing the cover plate 30, thereby improving the production efficiency of the cover plate 30 and further reducing the production cost of the display module.
The refractive index of the optical structure 50 is smaller than that of the functional layer 20 and smaller than that of the cover plate 30. In some implementations of the embodiments of the present application, referring to fig. 4 and 6, the optical structure 50 may be an air layer, so as to simplify the structure of the display module without adding additional process steps, thereby ensuring the production efficiency of the display module.
In other implementations of embodiments of the present application, referring to fig. 7, the material of the optical structure 50 may also be a transparent solid dielectric layer 510. The transparent solid dielectric layer 510 can protect the functional layer 20, and prevent the functional layer 20 from being damaged and affecting the service life of the display module.
For example, the transparent solid medium layer 510 may be a first optical adhesive layer, and the first optical adhesive layer adheres the functional layer 20 and the cover plate 30, and the refractive index of the first optical adhesive layer is smaller than the refractive index of the functional layer 20 and smaller than the refractive index of the cover plate 30. It is understood that the transparent solid dielectric layer 510 may also be other light transmissive materials having a refractive index less than the functional layer 20 and the cover plate 30.
When the optical structure 50 is an air layer and the surface of the cover plate 30 contacting the air layer is the first plane 320, the optical simulation is performed on the solution for clearly illustrating the technical effect of the embodiment of the present application. The result of the optical simulation is shown in fig. 8, in which the abscissa is the first direction x and the ordinate is the relative brightness. The first scheme is a relative brightness curve when the display module in the embodiment of the application is watched in the forward direction, and the second scheme is a relative brightness curve when the display module in the related art is watched in the forward direction. As can be seen from fig. 8, compared with the related art, in the display module of the embodiment of the application, the relative brightness of the second display area AA2 when viewed in the forward direction is larger. Therefore, the embodiment of the present application alleviates the technical problem of the luminance reduction of the second display area AA 2.
For example, referring to fig. 6, a surface of the cover plate 30 facing away from the second display area AA1 may be a second plane 330 parallel to the first display area AA1, or may also be a second arc surface bending toward the second display area.
Referring to fig. 7, the display module may further include a second optical adhesive layer 40 between the first display area AA1 and the cover plate 30, and the second optical adhesive layer 40 adheres the cover plate 30 and the first display area AA1. The second optical adhesive layer 40 is abutted to the optical structure 50 to prevent a gap from being generated between the second optical adhesive layer 40 and the optical structure 50 to affect the display effect of the display module.
Exemplarily, referring to fig. 7, the display module may further include a support layer 110, a heat dissipation layer 120, and a buffer layer 130. The support layer 110 provides a supporting function for the flexible display panel 10. For example, the support layer 110 may include a first support part 111 and a second support part 112 disposed at an interval, and the interval between the first support part 111 and the second support part 112 is disposed opposite to the bending region of the second display area AA2 to reduce stress when the second display area AA2 is bent.
The heat dissipation layer 120 may be disposed on a side of the first supporting portion 111 facing away from the flexible display panel 10, and the heat dissipation layer 120 may dissipate heat from the flexible display panel 10 to reduce a working temperature of the flexible display panel 10 and prevent the flexible display panel 10 from being damaged.
The buffer layer 130 may be disposed between the heat dissipation layer 120 and the second supporting portion 112 to absorb impact energy received by the display module, so as to prevent the display module from being damaged when being vibrated or impacted, thereby preventing the display module from affecting the service life. Illustratively, cushioning layer 130 may be foam. It is understood that the buffer layer 130 may also be a material having a buffering function, which is not described in detail in this embodiment of the application.
A second aspect of the embodiments of the present application provides a display device, including the display module as described above.
The display device of the embodiment of the application also has the advantages of the display module because the display device comprises any one of the display modules, and the description is omitted here.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A display module is characterized by comprising a flexible display panel, a functional layer and a cover plate, wherein the functional layer covers the light emitting side of the flexible display panel, and the cover plate is arranged on the functional layer; the flexible display panel and the functional layer are provided with a first display area and at least one second display area which are connected, and the second display area is bent towards the direction far away from the cover plate; an optical structure is arranged between the light-emitting side of the second display area and the cover plate, and the refractive index of the optical structure is smaller than that of the cover plate and smaller than that of the functional layer; the thickness of the optical structure is gradually increased along a first direction, and the first direction is parallel to the first display area and is vertical to the bending axis of the second display area.
2. The display module of claim 1, wherein the optical structure is an air layer.
3. The display module of claim 1, wherein the optical structure is a transparent solid dielectric layer.
4. The display module of claim 3, wherein the transparent solid dielectric layer is a first optical glue layer, and the functional layer and the cover plate are bonded by the first optical glue layer.
5. The display module according to any one of claims 1 to 4, wherein a surface of the cover plate contacting the optical structure is a first arc surface curved toward the second display area.
6. The display module according to any one of claims 1-4, wherein a surface of the cover plate contacting the optical structure is a first plane parallel to the first display area.
7. The display module according to any one of claims 1 to 4, wherein a surface of the cover plate facing away from the second display area is a second plane parallel to the first display area or a second arc surface bent toward the second display area.
8. The display module according to any one of claims 1-4, further comprising a second optical glue layer between the first display area and the cover plate, the second optical glue layer adhering the cover plate and the first display area and interfacing with the optical structure.
9. The display module according to any one of claims 1 to 4, wherein the functional layer comprises a touch layer and a polarizing layer stacked on the light exit side of the flexible display panel, and the refractive indexes of the touch layer and the polarizing layer are both greater than the refractive index of the optical structure.
10. A display device comprising the display module according to any one of claims 1 to 9.
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| CN115331561B (en) | 2024-01-30 |
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