CN110767732B - Display device - Google Patents
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- CN110767732B CN110767732B CN201911054877.8A CN201911054877A CN110767732B CN 110767732 B CN110767732 B CN 110767732B CN 201911054877 A CN201911054877 A CN 201911054877A CN 110767732 B CN110767732 B CN 110767732B
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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
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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
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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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 present invention relates to a display device. The display device includes: a display panel, a photosensitive device and a reflective film; the reflecting film is positioned between the display panel and the photosensitive device; the display panel comprises a first display area and a second display area, and the light transmittance of the first display area is greater than that of the second display area; the projection of the photosensitive device on the display panel falls in the first display area, and the projection of the reflecting film on the display panel covers the projection of the photosensitive device on the display panel; the reflective film is used for at least transmitting 0-order diffraction light generated after ambient light passes through the first display area and reflecting at least one order diffraction light in diffraction light of orders other than the 0-order diffraction light, and the photosensitive device is used for receiving the ambient light passing through the first display area and the reflective film. According to the embodiment of the invention, the influence of diffraction light generated after ambient light transmits through the display panel on the photosensitive device can be eliminated or reduced.
Description
Technical Field
The invention relates to the technical field of OLED display equipment, in particular to a display device.
Background
With the rapid development of display devices, the requirements of users on screen occupation are higher and higher. Since the top of the screen needs to be provided with elements such as a camera, a sensor, an earphone, etc., in the related art, a part of area is usually reserved at the top of the screen for installing the elements, for example, the "bang" area of iphoneX of the iphone, which affects the overall consistency of the screen. Currently, full-screen displays are receiving more and more attention from the industry.
Disclosure of Invention
The present invention provides a display device to solve the disadvantages of the related art.
An embodiment of the present invention provides a display device, including: a display panel, a photosensitive device and a reflective film; the reflecting film is positioned between the display panel and the photosensitive device;
the display panel comprises a first display area and a second display area, and the light transmittance of the first display area is greater than that of the second display area; the projection of the photosensitive device on the display panel falls into the first display area, and the projection of the reflecting film on the display panel covers the projection of the photosensitive device on the display panel;
the reflective film is used for at least transmitting 0 th order diffraction light generated after ambient light passes through the first display area and reflecting at least one of the orders of diffraction light except the 0 th order diffraction light, and the photosensitive device is used for receiving the ambient light passing through the first display area and the reflective film.
In one embodiment, the reflective film includes a first circular polarizer, a transparent layer, and a reflective layer; the transparent layer is located between the first circular polarizer and the reflecting layer, the first circular polarizer is located on one side close to the display panel, and the reflecting layer is located on one side close to the photosensitive device.
Because the first circular polarizer is positioned on the side of the reflecting film far away from the photosensitive device, the diffracted light which is transmitted through the first circular polarizer and reflected back by the reflecting film can be eliminated, and the display effect of the first display area is prevented from being influenced. Because the substrate of the reflecting film is the transparent layer, the light transmittance of the reflecting film can be improved, and the photosensitive quality of the photosensitive device is prevented from being influenced.
Preferably, the material of the transparent layer is a transparent resin.
Preferably, the material of the transparent layer is polyethylene terephthalate or polyimide.
Preferably, the thickness of the reflective layer ranges from 95nm to 195 nm.
Preferably, the material of the reflective layer comprises at least one of aluminum, gold, silver, copper, platinum, and chromium.
Preferably, the reflecting layer comprises small spheres, the diameter of each small sphere is in a nanometer scale, and the material of each small sphere is silicon dioxide.
Preferably, the refractive index of the reflective layer is greater than 1.57.
In one embodiment, the reflective layer has a reflectivity of 7%, and the reflective film is configured to transmit the 0 th order diffracted light and reflect all orders of diffracted light except the 0 th order diffracted light.
When the reflective layer has a reflectivity of 7%, the reflective film can transmit the 0 th order diffracted light and reflect all orders of diffracted light except the 0 th order diffracted light, so that the influence of the diffracted light generated after the ambient light passes through the display panel on the photosensitive device can be eliminated.
Preferably, the thickness of the reflective layer is 170 nm.
In one embodiment, the reflective layer has a reflectance of 5%, and the reflective film transmits the 0 th order, 1 st order, and-1 st order diffracted lights and reflects all orders of diffracted lights except the 0 th order, 1 st order, and-1 st order diffracted lights.
When the reflection rate of the reflective layer is 5%, the reflective film transmits the 0 th order, 1 st order and-1 st order diffracted lights, and reflects all the diffracted lights of orders other than the 0 th order, 1 st order and-1 st order diffracted lights, so that the influence of the diffracted lights with weak intensity, which are generated after the ambient light passes through the display panel, on the photosensitive device can be eliminated.
Preferably, the thickness of the reflective layer is 145 nm.
In one embodiment, the reflective layer has a reflectance of 3%, and the reflective film transmits the 0 th order, 1 st order, -1 st order, 2 nd order, and-2 nd order diffracted lights and reflects all orders of diffracted lights except the 0 th order, 1 st order, -1 st order, 2 nd order, and-2 nd order diffracted lights.
When the reflection ratio of the reflective layer is 3%, the reflective film transmits 0 th order diffraction light, 1 st order diffraction light, -1 st order diffraction light, 2 nd order diffraction light, and-2 nd order diffraction light, and reflects all diffraction light of orders other than 0 th order diffraction light, 1 st order diffraction light, -1 st order diffraction light, 2 nd order diffraction light, and-2 nd order diffraction light, so that the influence of weak intensity diffraction light generated after ambient light passes through the display panel on the photosensitive device can be eliminated.
Preferably, the thickness of the reflective layer is 120 nm.
In one embodiment, the display device further comprises a second circular polarizer; the second circular polarizer is positioned on one side, far away from the photosensitive device, of the display panel, and covers the second display area and does not cover the first display area.
The second circular polarizer is positioned on one side of the display panel far away from the photosensitive device, covers the second display area and does not cover the first display area, so that the influence of ambient light entering the display panel reflected back to the display effect of the first display area can be eliminated.
In one embodiment, the first circular polarizer comprises a linear polarizer and a quarter-wave plate, the transmission direction of the linear polarizer forms an angle of 45 degrees with the optical axis of the quarter-wave plate, the linear polarizer is positioned on the side far away from the photosensitive device, and the quarter-wave plate is positioned on the side close to the photosensitive device;
preferably, the linear polarizer is a crystal or wire grid thin film having dichroism.
Preferably, the material of the wire grid thin film comprises at least one of gold, silver, copper, titanium and iodine.
In one embodiment, the reflective film is located on a side of the display panel facing the photosensitive device, or the reflective film is located on a side of the photosensitive device facing the display panel.
In one embodiment, the first display region includes first sub-pixels arranged in an array, the second display region includes second sub-pixels arranged in an array, and the density of the first sub-pixels is less than or equal to the density of the second sub-pixels.
When the density of the first sub-pixels is smaller than that of the second sub-pixels, the light transmittance of the first display area is larger than that of the second display area, and when the density of the first sub-pixels is equal to that of the second sub-pixels, the difference of the display brightness of the first display area and the second display area can be reduced, and a remarkable boundary line is avoided when the difference of the display brightness of the adjacent first display area and the second display area is large.
Preferably, the first sub-pixel comprises a first electrode, a first organic light emitting layer and a second electrode; the first organic light emitting layer is positioned on the first electrode, and the second electrode is positioned on the first organic light emitting layer.
Preferably, the first electrode comprises m electrode blocks, m being a natural number; the first organic light-emitting layer comprises m light-emitting structures, and one light-emitting structure is arranged on one electrode block.
When the first electrode comprises m electrode blocks, the first organic light-emitting layer comprises m light-emitting structures, one light-emitting structure is arranged on each electrode block, and m is larger than 1, the light-emitting structures can be driven to emit light by the same pixel circuit, the number of the pixel circuits can be reduced, the displayed granular sensation can be weakened, and the display effect can be improved.
Preferably, the projection of the first electrode on the plane of the display panel is composed of one graphic unit or more than two graphic units; the graphic units are round, oval, dumbbell-shaped, gourd-shaped or rectangular.
When the projection of the first electrode on the plane of the display panel is composed of one graphic unit or more than two graphic units, and the graphic units are circular, oval, dumbbell or calabash, the circular, oval, dumbbell or calabash patterns can change the periodic structure generating diffraction, that is, the distribution of the diffraction field is changed, so that the diffraction phenomenon can be weakened, and the influence of the diffraction phenomenon on the photosensitive device arranged below the first display area can be reduced.
In one embodiment, the second display region further includes a first pixel circuit electrically connected to the first sub-pixel and a second pixel circuit electrically connected to the second sub-pixel.
Since the first pixel circuit of the first sub-pixel in the first display region is located in the second display region, the light transmittance of the first display region can be improved.
According to the above-described embodiment, the reflective film is provided between the light receiving device and the display panel so that 0 th order diffracted light generated when ambient light passes through the first display region passes through the reflective film, but at least one of the orders of diffracted light other than the 0 th order diffracted light is reflected by the reflective layer of the reflective film and eliminated by the first circular polarizer layer, and further, the influence of the diffracted light generated when ambient light passes through the display panel on the light receiving device can be eliminated or reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram illustrating a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural view showing another display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating a display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the related art, there is a full-screen including a transparent display area and a non-transparent display area, and the transparent display area can implement both a light transmission function and a display function. Wherein, the lower part of the transparent display area can be provided with a camera, a distance sensor, an infrared lens, a floodlight sensing element, an ambient light sensor and other photosensitive devices, and certainly, other electronic elements can also be provided, such as a microphone, a loudspeaker, a flash lamp, a dot matrix projector and the like. Due to the laminated structure of the TFT of the pixel circuit in the transparent display area and the array arrangement of the OLED pixels, there is a problem of optical diffraction, which affects the photosensitive quality of the photosensitive device.
In view of the above technical problems, embodiments of the present invention provide a display device, which can solve the above technical problems and reduce the influence of diffracted light generated after ambient light passes through a display panel on a photosensitive device.
One embodiment of the present invention provides a display device. As shown in fig. 1, the display device includes: a display panel 11, a light sensing device 12, and a reflective film 13. The reflective film 13 is located between the display panel 11 and the photo-sensing device 12.
As shown in fig. 2, the display panel 11 includes a first display area 111 and a second display area 112, the light transmittance of the first display area 111 is greater than that of the second display area 112, the projection of the photosensitive device 12 on the display panel 11 falls within the first display area 111, and the projection of the reflective film 13 on the display panel 11 covers the projection of the photosensitive device 12 on the display panel 11. The reflective film 13 is configured to transmit at least 0 th order diffracted light generated after ambient light passes through the first display region 111, and to reflect at least one of the 0 th order diffracted light and the 0 th order diffracted light, and the light receiving device is configured to receive ambient light passing through the first display region and the reflective film.
Specifically, after the ambient light passes through the first display area, 0 th order diffraction light and + -j th order diffraction light are generated, j is a natural number, and j is the order of the diffraction light. The energy of 0 th order diffracted light is the largest, and the energy of diffracted light having a larger order number is smaller. The 0 th order diffraction light is the light required by the operation of the photosensitive device 12, and the + -j order diffraction light is the light which has adverse effect on the operation of the photosensitive device 12 and can affect the photosensitive quality of the photosensitive device. The more energetic diffracted light, other than the 0 th order diffracted light, has a greater adverse effect on the photosensitive device and needs to be eliminated or attenuated. For example, when the photosensitive device 12 is a camera, the photosensitive device 12 can collect an image by receiving 0 th order diffracted light, and if 1 st order diffracted light and 2 nd order diffracted light can reach the photosensitive device 12, the collected image may include two kinds of fringes: the fringes due to the 1 st order diffraction light and the fringes due to the 2 nd order diffraction light are wider and brighter than the fringes due to the 2 nd order diffraction light. In the present embodiment, the reflective film 13 may transmit at least 0 th order diffracted light generated after ambient light passes through the first display region 111 and reflect at least one of the orders of diffracted light other than the 0 th order diffracted light, and may reflect all of the orders of diffracted light other than the 0 th order diffracted light, or may reflect some of the orders of diffracted light other than the 0 th order diffracted light. Therefore, the influence of the diffracted light generated after the ambient light passes through the display panel on the photosensitive device can be eliminated or weakened.
In this embodiment, the reflective film is provided between the light receiving device and the display panel, so that 0 th order diffracted light generated after ambient light has passed through the first display region is transmitted through the reflective film, but at least one of the orders of diffracted light other than the 0 th order diffracted light is reflected, whereby the influence of the diffracted light generated after ambient light has passed through the display panel on the light receiving device can be eliminated or reduced.
In one embodiment, as shown in fig. 2, the reflective film 13 includes a transparent layer 131, a reflective layer 132, and a first circular polarizer 133. The transparent layer 131 is located between the first circular polarizer 133 and the reflective layer 132, the first circular polarizer 133 is located at a side close to the display panel 11, and the reflective layer 132 is located at a side close to the photosensitive device 12. Because the substrate of the reflecting film is the transparent layer, the light transmittance of the reflecting film can be improved, and the photosensitive quality of the photosensitive device is prevented from being influenced. Because the first circular polarizer is positioned on the side of the reflecting film far away from the photosensitive device, the diffracted light which is transmitted through the first circular polarizer and reflected back by the reflecting film can be eliminated, and the display effect of the first display area is prevented from being influenced.
In one embodiment, the material of the transparent layer is a transparent resin. In one embodiment, the material of the transparent layer is polyethylene terephthalate (PET) or Colorless Polyimide (CPI).
The thickness of the reflective layer 132 is in a range of 95nm (nanometers) to 195 nm. The thicker the thickness of the reflective layer 132, the greater the reflectivity. The thickness of the reflective layer 132 may be determined according to actual requirements. In one embodiment, the reflective layer 132 is 95nm thick. In one embodiment, the reflective layer 132 has a thickness of 145 nm. In one embodiment, the reflective layer 132 is 195nm thick.
In one embodiment, the material of the reflective layer 132 includes aluminum. In another embodiment, the material of the reflective layer 132 includes gold and silver. In another embodiment, the material of the reflective layer 132 includes aluminum, gold, silver, copper, platinum and chromium. Of course, the material of the reflective layer 132 may include any one and any combination of aluminum, gold, silver, copper, platinum, and chromium.
In one embodiment, the reflective layer may include small spheres, the diameter of the small spheres is nanometer, and the material of the small spheres is silicon dioxide. Wherein, the larger the size of the small ball, the smaller the degree of reflection of light. In practical application, the size of the small balls in the reflecting layer can be determined according to the practical requirement on the reflectivity of the reflecting layer.
In one embodiment, the refractive index of the reflective layer is greater than 1.57.
It should be noted that the higher the reflectance of the reflective layer 132, the higher the energy of diffracted light can be reflected, and the higher the resolution of the photosensitive device 12 can be.
In one embodiment, the reflective layer 132 has a reflectivity of 7%, the reflective layer may have a thickness of 170nm, the reflective film 13 is configured to transmit the 0 th order diffracted light and reflect all orders of diffracted light except the 0 th order diffracted light, and the resolution of the photosensitive device 12 is the first resolution. In this embodiment, the reflective layer 132 is a reflective layer with high reflectivity, so that the reflective film 13 can reflect all orders of diffracted light except for 0 th order diffracted light, and thus, the influence of diffracted light generated after ambient light passes through the display panel on the photosensitive device can be eliminated, so that the resolution of the photosensitive device can be high resolution. For example, when the photosensitive device is a camera, the situation that fringes exist on an acquired image due to diffraction light can be avoided, and the image quality is improved.
In one embodiment, the reflective layer 132 has a reflectivity of 5%, the reflective layer 132 has a thickness of 145nm, the reflective film 13 transmits the 0 th order, 1 st order and-1 st order diffracted lights and reflects all the other orders of diffracted lights except the 0 th order, 1 st order and-1 st order diffracted lights, and the resolution of the light sensing device 12 is the second resolution. Wherein the second resolution may be less than the first resolution. When the reflection rate of the reflective layer 132 is 5%, the reflective film transmits the 0 th order, 1 st order, and-1 st order diffracted lights, and reflects all the diffracted lights of orders other than the 0 th order, 1 st order, and-1 st order diffracted lights, so that the influence of the diffracted lights with weak intensity, which are generated after the ambient light passes through the display panel, on the photosensitive device can be eliminated.
In one embodiment, the reflective layer 132 has a reflectivity of 3%, the reflective layer 132 has a thickness of 120nm, the reflective film 13 transmits 0 th order, 1 st order, -1 st order, 2 nd order and-2 nd order diffracted lights and reflects all the diffracted lights of the orders except for the 0 th order, 1 st order, -1 st order, 2 nd order and-2 nd order diffracted lights, and the resolution of the light sensing device 12 is the third resolution. The third resolution may be less than the second resolution. When the reflectance of the reflective film is 3%, the reflective film transmits 0 th order diffraction light, 1 st order diffraction light, -1 st order diffraction light, 2 nd order diffraction light, -2 nd order diffraction light, and reflects all diffraction light of orders except for 0 th order diffraction light, 1 st order diffraction light, -1 st order diffraction light, 2 nd order diffraction light, -2 nd order diffraction light, and therefore, the influence of weak intensity diffraction light generated after ambient light passes through the display panel on the photosensitive device can be eliminated.
In one embodiment, as shown in FIG. 2, the display device further comprises a second circular polarizer 14. The first circular polarization plate 14 is located on the side of the display panel 11 away from the photosensitive device 12, covering the second display area 112 and not covering the first display area 111. The second circular polarizer is positioned on one side of the display panel far away from the photosensitive device, covers the second display area and does not cover the first display area, so that the influence of ambient light entering the display panel reflected back to the display effect of the first display area can be eliminated.
In one embodiment, the first circular polarizer 133 may include a linear polarizer and a quarter-wave plate, the transmission direction of the linear polarizer forms an angle of 45 degrees with the optical axis of the quarter-wave plate, the linear polarizer is located at a side far away from the photosensitive device 12, and the quarter-wave plate is located at a side near the photosensitive device 12. Ambient light becomes linearly polarized light through the linear polarizer, and the linearly polarized light becomes circularly polarized light through the quarter wave plate.
In one embodiment, the linear polarizer is a crystal with dichroism. In another embodiment, the linear polarizer is a wire grid film.
In one embodiment, the material of the wire grid thin film may comprise gold. In another embodiment, the material of the wire grid thin film may comprise iodine. In another embodiment, the material of the wire grid thin film may comprise gold and silver. In yet another embodiment, the material of the wire grid thin film may include gold, silver, copper and titanium. Of course, the material of the wire grid thin film may include one or any combination of gold, silver, copper, titanium, and iodine.
In one embodiment, as shown in fig. 1, the display apparatus further includes an encapsulation layer 16, and the encapsulation layer 16 is encapsulated on a side of the display panel 11 away from the light sensing device 12. The second circular polarizer 14 may be located on a side of the encapsulation layer 16 away from the display panel 11.
In one embodiment, as shown in fig. 3, the reflective film 13 may be located on the side of the display panel 11 facing the photosensitive device 12. In another embodiment, as shown in fig. 4, the reflective film 13 may be located on a side of the photosensitive device 12 facing the display panel 11.
In one embodiment, the first display region 111 includes first sub-pixels arranged in an array, and the second display region 112 includes second sub-pixels arranged in an array, and the density of the first sub-pixels is less than that of the second sub-pixels. Since the density of the first sub-pixels is less than that of the second sub-pixels, the light transmittance of the first display area is greater than that of the second display area.
In another embodiment, the density of the first sub-pixels is equal to the density of the second sub-pixels. Because the density of the first sub-pixels is equal to that of the second sub-pixels, the difference of the display brightness of the first display area and the second display area can be reduced, and a clear boundary line which is larger in the difference of the display brightness of the adjacent first display area and the second display area is avoided.
In one embodiment, the first sub-pixel is different from the second sub-pixel. In particular, the first sub-pixel may be a transparent sub-pixel and the second sub-pixel may be an opaque sub-pixel. Alternatively, the light transmittance of the first sub-pixel is greater than that of the second sub-pixel. For example, in the present embodiment, the first sub-pixel may include a first electrode, a first organic light emitting layer and a second electrode, wherein the first organic light emitting layer is located on the first electrode, and the second electrode is located on the first organic light emitting layer. The first electrode may be a transparent anode. The material of the first electrode may be transparent ITO (indium tin oxide), graphene, IZO (indium zinc oxide), or ITZO (indium tin zinc oxide), but is not limited thereto. The second sub-pixel may include a third electrode, a second organic light emitting layer on the third electrode, and a fourth electrode on the second organic light emitting layer. The third electrode may be a reflective anode. The third electrode may include a first transparent conductive layer, a metal layer and a second transparent conductive layer, the material of the first transparent conductive layer and the second transparent conductive layer may be ITO, and the material of the metal layer may be Ag (silver), but is not limited thereto.
In one embodiment, the first electrode may include m electrode blocks, m being a natural number. For example, m may be 1, 2, 3, or other natural number. The first organic light emitting layer may include m light emitting structures, and one light emitting structure is disposed on one electrode block. When m is larger than 1, the same first pixel circuit can drive the light-emitting structures in the same first sub-pixel to emit light, so that the number of the pixel circuits can be reduced, the display granular sensation can be weakened, and the display effect can be improved.
In one embodiment, the projection of the first electrode on the plane of the display panel is composed of one graphic unit or more than two graphic units; the graphic units are round, oval, dumbbell-shaped, gourd-shaped or rectangular. When the projection of the first electrode on the plane of the display panel is composed of one graphic unit or more than two graphic units, and the graphic units are circular, oval, dumbbell or calabash, the circular, oval, dumbbell or calabash patterns can change the periodic structure generating diffraction, that is, the distribution of the diffraction field is changed, so that the diffraction phenomenon can be weakened, and the influence of the diffraction phenomenon on the photosensitive device arranged below the first display area can be reduced.
In one embodiment, the second display region 112 further includes a first pixel circuit electrically connected to the first sub-pixel and a second pixel circuit electrically connected to the second sub-pixel. Specifically, one second pixel circuit may be electrically connected to one second sub-pixel, and the second pixel circuits of the second sub-pixels in the second display region 112 may be closely arranged to make room for the first pixel circuits, so that the light transmittance of the first display region may be improved, and the diffraction phenomenon due to the stacked structure of the first pixel circuits may also be eliminated. In addition, one first pixel circuit may be electrically connected to two or more first sub-pixels, which may reduce the number of first pixel circuits.
The first sub-pixel and the second sub-pixel may be sub-pixels of any color, for example, the first sub-pixel may be a red sub-pixel, a blue sub-pixel, or a green sub-pixel. The adjacent first sub-pixels of different colors may constitute one first pixel, and similarly, the adjacent second sub-pixels of different colors may also constitute one second pixel.
The display device in this embodiment may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (24)
1. A display device, comprising: a display panel, a photosensitive device and a reflective film; the reflecting film is positioned between the display panel and the photosensitive device;
the display panel comprises a first display area and a second display area, and the light transmittance of the first display area is greater than that of the second display area; the projection of the photosensitive device on the display panel falls into the first display area, and the projection of the reflecting film on the display panel covers the projection of the photosensitive device on the display panel;
the reflective film is used for at least transmitting 0 th order diffraction light generated after ambient light passes through the first display area and reflecting at least one of the orders of diffraction light except the 0 th order diffraction light, and the photosensitive device is used for receiving the ambient light passing through the first display area and the reflective film.
2. The display device according to claim 1, wherein the reflective film comprises a first circular polarizer, a transparent layer, and a reflective layer; the transparent layer is located between the first circular polarizer and the reflecting layer, the first circular polarizer is located on one side close to the display panel, and the reflecting layer is located on one side close to the photosensitive device.
3. The display device according to claim 2, wherein a material of the transparent layer is a transparent resin.
4. A display device as claimed in claim 3, characterized in that the material of the transparent layer is polyethylene terephthalate or polyimide.
5. The display device according to claim 2, wherein the reflective layer has a thickness in a range of 95nm to 195 nm.
6. The display device according to claim 2, wherein a material of the reflective layer includes at least one of aluminum, gold, silver, copper, platinum, and chromium.
7. The display device according to claim 2, wherein the reflective layer comprises small spheres, the diameter of the small spheres is nanometer, and the material of the small spheres is silicon dioxide.
8. The display device of claim 2, wherein the reflective layer has a refractive index greater than 1.57.
9. The display device according to claim 2, wherein the reflective layer has a reflectance of 7%, and wherein the reflective film transmits the 0 th order diffracted light and reflects all orders of diffracted light except the 0 th order diffracted light.
10. The display device according to claim 9, wherein the reflective layer has a thickness of 170 nm.
11. The display device according to claim 2, wherein the reflective layer has a reflectance of 5%, and wherein the reflective film transmits the 0 th order, 1 st order and-1 st order diffracted lights and reflects all orders of diffracted lights except the 0 th order, 1 st order and-1 st order diffracted lights.
12. The display device according to claim 11, wherein the reflective layer has a thickness of 145 nm.
13. The display device according to claim 2, wherein the reflective layer has a reflectance of 3%, and wherein the reflective film transmits the 0 th order diffraction light, the 1 st order diffraction light, the-1 st order diffraction light, the 2 nd order diffraction light, and reflects all orders of diffraction light except the 0 th order diffraction light, the 1 st order diffraction light, the-1 st order diffraction light, the 2 nd order diffraction light, and the-2 nd order diffraction light.
14. A display device as claimed in claim 13, characterized in that the thickness of the reflective layer is 120 nm.
15. The display device according to claim 1, further comprising a second circular polarizer;
the second circular polarizer is positioned on one side, far away from the photosensitive device, of the display panel, and covers the second display area and does not cover the first display area.
16. The display device according to claim 2, wherein the first circular polarizer comprises a linear polarizer and a quarter-wave plate, the linear polarizer has a polarization direction making an angle of 45 degrees with an optical axis of the quarter-wave plate, the linear polarizer is located on a side away from the photosensitive device, and the quarter-wave plate is located on a side close to the photosensitive device.
17. The display device according to claim 16, wherein the linear polarizer is a crystal or wire grid thin film having dichroism.
18. A display device as recited in claim 17, wherein the material of the wire grid thin film comprises at least one of gold, silver, copper, titanium, and iodine.
19. The display device according to claim 1, wherein the reflection film is located on a side of the display panel facing the light sensing device, or,
the reflecting film is positioned on one side of the photosensitive device facing the display panel.
20. The display device according to claim 1, wherein the first display region comprises first sub-pixels arranged in an array, the second display region comprises second sub-pixels arranged in an array, and a density of the first sub-pixels is less than or equal to a density of the second sub-pixels.
21. The display device according to claim 20, wherein the first subpixel comprises a first electrode, a first organic light-emitting layer, and a second electrode; the first organic light emitting layer is positioned on the first electrode, and the second electrode is positioned on the first organic light emitting layer.
22. The display device according to claim 21, wherein the first electrode includes m electrode blocks, m being a natural number; the first organic light-emitting layer comprises m light-emitting structures, and one light-emitting structure is arranged on one electrode block.
23. The display device according to claim 22, wherein the projection of the first electrode on the plane of the display panel is composed of one graphic unit or more than two graphic units; the graphic units are round, oval, dumbbell-shaped, gourd-shaped or rectangular.
24. The display device according to claim 20, wherein the second display region further comprises a first pixel circuit and a second pixel circuit, the first pixel circuit being electrically connected to the first sub-pixel, the second pixel circuit being electrically connected to the second sub-pixel.
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| CN111402739B (en) * | 2020-03-31 | 2023-03-24 | 云谷（固安）科技有限公司 | Display module and preparation method thereof |
| CN111667761B (en) * | 2020-06-08 | 2022-07-05 | 昆山国显光电有限公司 | Display module and display device |
| CN112331070A (en) * | 2020-10-23 | 2021-02-05 | 云谷（固安）科技有限公司 | Light field modulation assembly, display assembly and display device |
| CN112289964B (en) * | 2020-10-30 | 2022-09-27 | 合肥维信诺科技有限公司 | Preparation method of display substrate and preparation method of display panel |
| CN113066939B (en) * | 2021-03-23 | 2022-08-02 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113130820A (en) * | 2021-04-08 | 2021-07-16 | 武汉华星光电半导体显示技术有限公司 | Display module, manufacturing method thereof and display device |
| CN114047649B (en) * | 2021-11-15 | 2022-10-04 | 武汉华星光电技术有限公司 | Liquid crystal display panel and on-vehicle liquid crystal display device |
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