CN110649081B - Display panel, preparation method and display device - Google Patents
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- CN110649081B CN110649081B CN201910945541.4A CN201910945541A CN110649081B CN 110649081 B CN110649081 B CN 110649081B CN 201910945541 A CN201910945541 A CN 201910945541A CN 110649081 B CN110649081 B CN 110649081B
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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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14627—Microlenses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
- H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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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 embodiment of the invention discloses a display panel, a preparation method and a display device. The display panel comprises a first display area and a second display area adjacent to the first display area, and the second display area is reused as a light sensor reserved area; the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas; the display panel also comprises a substrate and a plurality of film layers positioned on one side of the substrate; and in the light transmission area, the substrate base plate and/or at least one of the multiple film layers comprise a convex lens structure. The display panel provided by the embodiment of the invention can realize normal display of the optical sensor setting area under the screen, the screen occupation ratio of the display panel is improved, and the convex lens structure is arranged in the light transmission area to converge light, so that the optical sensor can receive sufficient light, and the beneficial effect of improving the performance of the optical sensor is further achieved.
Description
Technical Field
The embodiment of the invention relates to a display technology, in particular to a display panel, a preparation method and a display device.
Background
Organic Light-Emitting Diode (OLED) devices have the advantages of self-luminescence, simple structure, fast response speed, low power consumption, and the like, and have been widely applied to the display fields of mobile phones, flat panels, televisions, and the like. With the development of consumer electronics products such as mobile phones including display panels and cameras, full-screen displays with a high screen ratio are becoming more popular. The screen occupation ratio is the ratio of the screen area to the whole machine area, and higher screen occupation ratio can bring better visual experience to users.
Taking a mobile phone as an example, in order to achieve a higher screen occupation ratio, the existing solution is to design a non-display area at the top end of the screen, for example, the existing widely adopted solutions such as "bang screen", "water drop screen", and the like, although the screen occupation ratio can be improved to a certain extent, the beauty of the mobile phone is affected, and the real effect of full screen display is difficult to achieve.
Disclosure of Invention
The embodiment of the invention provides a display panel, a preparation method and a display device, wherein the display panel can realize normal display of an optical sensor setting area under a screen, the screen occupation ratio of the display panel is improved, and a convex lens structure is arranged in a light transmission area to converge light, so that the optical sensor can receive sufficient light quantity, and further, the beneficial effect of improving the performance of the optical sensor is achieved.
In a first aspect, an embodiment of the present invention provides a display panel, including a first display area and a second display area adjacent to the first display area, where the second display area is reused as a reserved area of a light sensor;
the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas;
the display panel further comprises a substrate and a plurality of film layers positioned on one side of the substrate;
wherein, in the light-transmitting area, the substrate base plate and/or at least one of the film layers comprises a convex lens structure.
In a second aspect, an embodiment of the present invention further provides a method for manufacturing a display panel, including:
providing a substrate, wherein the substrate comprises a first display area and a second display area adjacent to the first display area, and the second display area is reused as a reserved area of a light sensor; the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas;
and forming a plurality of film layers on one side of the substrate base plate, wherein in the light transmission area, the substrate base plate and/or at least one of the film layers are/is provided with a convex lens structure.
In a third aspect, an embodiment of the present invention further provides a display device, including any one of the display panels described above, further including:
and the optical sensor module is arranged in the second display area of the display panel and is positioned on one side of the substrate, which deviates from the light-emitting surface, and the light-sensitive surface of the optical sensor module faces the display panel.
The display panel provided by the embodiment of the invention comprises a first display area and a second display area adjacent to the first display area, wherein the second display area is reused as a light sensor reserved area; the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas; the display panel also comprises a substrate and a plurality of film layers positioned on one side of the substrate; and in the light transmission area, the substrate base plate and/or at least one of the multiple film layers comprise a convex lens structure. The plurality of light-transmitting areas are arranged in the second display area, so that external light can be transmitted through the display panel by the light-transmitting areas and then received by the optical sensor (such as a camera), and normal display of the second display area can be realized by arranging the plurality of light-emitting areas in the second display area, so that the screen occupation ratio of the display panel is improved, and full-screen display is realized; at least one rete through in substrate base plate and/or a plurality of rete in the printing opacity district sets up the convex lens structure, and when external light incided, the convex lens structure assembles external light, and reinforcing transmission luminous intensity improves the imaging quality.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a second display area of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A' of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line A-A' of FIG. 2;
FIG. 5 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 2;
FIGS. 6 and 7 are schematic views of still another cross-sectional structure taken along the line A-A' in FIG. 2;
FIG. 8 is a schematic view of another cross-sectional structure taken along the line A-A' in FIG. 2;
FIG. 9 is a schematic cross-sectional view taken along line B-B' of FIG. 2;
FIG. 10 is a schematic cross-sectional view taken along line B-B' of FIG. 2;
fig. 11 is a schematic partial structure diagram of a display panel according to an embodiment of the present invention;
fig. 12 is a schematic flowchart of a method for manufacturing a display panel according to an embodiment of the invention;
FIG. 13 is a schematic view of a structure for forming a groove in a substrate or a film;
FIG. 14 is a schematic view of a structure for forming a bump on a substrate or a film
Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It should be noted that the terms "upper", "lower", "left", "right", and the like used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it is also to be understood that when an element is referred to as being "on" or "under" another element, it can be directly formed on "or" under "the other element or be indirectly formed on" or "under" the other element through an intermediate element. The terms "first," "second," and the like, are used for descriptive purposes only and not for purposes of limitation, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 2 is a schematic partial structural diagram of a second display region of the display panel according to the embodiment of the present invention, and fig. 3 is a schematic sectional structural diagram along a sectional line a-a' in fig. 2. Referring to fig. 1 and 2, the display panel provided in the present embodiment includes a first display area 10 and a second display area 20 adjacent to the first display area 10, and the second display area 20 is reused as a photosensor reserved area; the second display region 20 includes a plurality of light emitting regions 21 and a plurality of light transmitting regions 22; referring to fig. 3, the display panel further includes a substrate base plate 100 and a plurality of film layers 200 on one side of the substrate base plate 100; wherein, in the light-transmitting region, the substrate 100 and/or at least one of the plurality of film layers 200 includes a convex lens structure 201.
It can be understood that the display panel provided by the embodiment of the present invention is suitable for a display device that needs to dispose an optical sensor under a screen, where the optical sensor may be a camera, and the following description will take the optical sensor as a camera as an example. Because the requirement of the camera on light is high, in the prior art, a hollowed area is generally arranged at the edge or inside of a display area, the hollowed area cannot display, and the real comprehensive screen design is difficult to realize. Since the aperture of the camera for receiving light is generally configured to be circular, the second display area 20 is exemplarily shown as a circular area in fig. 1, and in other embodiments, the second display area 20 may also be in other shapes and may also be disposed at the edge of the first display area 10. Referring to fig. 2, the second display region includes a plurality of light emitting regions 21 and a plurality of light transmitting regions 22, each light emitting region 21 may be provided with at least one light emitting element, which may be an Organic Light Emitting Diode (OLED), for example, for realizing normal display of the second display region, and in other embodiments, the light emitting element may be a micro inorganic light emitting diode (micro LED). Each OLED needs a driving circuit (not shown in fig. 2) for driving the OLED to emit light and a plurality of signal transmission wires 211, four adjacent light emitting areas 21 and wires therebetween surround one light transmitting area 22, and the light transmitting area 22 is used for transmitting external light to enable the camera to image. It will be appreciated that the display function of the second display area may be switched off when the camera is used to capture images.
Illustratively, the plurality of film layers 200 schematically illustrated in fig. 3 on one side of the substrate 100 includes two film layers, respectively a film layer 210 and a film layer 220, wherein the film layer 210 includes a lenticular structure 201. Fig. 3 also schematically shows a schematic diagram of a light path of external light passing through the light-transmitting region, and since the film layer 210 includes the convex lens structure 201, the light converges when passing through the convex lens structure 201, so that the light intensity of the unit light receiving area of the camera is increased, and the imaging quality is optimized.
With continued reference to fig. 3, the traces 211 are disposed between the film layers 210 and 220, and both the film layers 210 and 220 can be inorganic insulating layers for realizing insulation between different layers of traces. It should be noted that the film layer relationship shown in fig. 3 is only for illustrating the structure of the light-transmitting area of the present embodiment, and in specific implementation, the display panel may include multiple layers of wires and more film layers, and the convex lens structures may be arranged in the multiple film layers in the light-transmitting area according to actual conditions to realize convergence of external incident light, so as to improve the imaging effect of the camera.
According to the technical scheme of the embodiment of the invention, the plurality of light-transmitting areas are arranged in the second display area, external light can be transmitted through the display panel by the light-transmitting areas so as to be received by the optical sensor (such as a camera), and normal display of the second display area can be realized by arranging the plurality of light-emitting areas in the second display area, so that the screen occupation ratio of the display panel is improved, and full-screen display is realized; at least one rete through in substrate base plate and/or a plurality of rete in the printing opacity district sets up the convex lens structure, and when external light incided, the convex lens structure assembles external light, and reinforcing transmission luminous intensity improves the imaging quality. In addition, the convex lens structure is formed by adopting the film layer in the display panel, so that the manufacture of the convex lens structure is compatible with the manufacture of the film layer in the display panel, and the manufacture process is simplified.
On the basis of the above embodiment, fig. 4 is another schematic cross-sectional structure along the cross-sectional line a-a' in fig. 2. Referring to fig. 4, optionally, at least two adjacent film layers of the substrate base plate 100 and the plurality of film layers 200 include a convex lens structure 201 in the light-transmitting region.
Exemplarily, fig. 4 shows that the plurality of film layers 200 include three film layers, which are a film layer 210, a film layer 220, and a film layer 230, wherein the film layer 230 includes a convex lens structure 201a, and the film layer 210 includes a convex lens structure 201b, and the convex lens structures are disposed on at least two adjacent film layers, so that the light converging capability can be improved, and the imaging effect can be further improved.
It is understood that the embodiment in fig. 4 is similar to that in fig. 3, the trace 211 is disposed between the film 210 and the film 220, and the film 230 is disposed between the film 210 and the substrate 100, and may serve as a buffer layer to facilitate formation of various films of the driving circuit in the light emitting region.
Optionally, in the light-transmitting area, the substrate base plate and/or at least one of the plurality of film layers is provided with a groove, and the bottom surface of the groove is an arc surface; or in the light-transmitting area, the substrate base plate and/or at least one film layer in the plurality of film layers are/is provided with a bulge, and the top surface of the bulge is an arc surface.
With continued reference to fig. 3 or fig. 4, in the present embodiment, the substrate 100 is provided with a groove 101 in the light-transmitting region, and the bottom surface of the groove 101 is an arc surface (fig. 3 and fig. 4 are cross-sectional views showing that the groove 101 is an arc shape), it is understood that the substrate 100 may be made of a rigid material, such as glass, or a flexible organic material, such as polyimide. When the groove 101 is formed on the substrate 100, the convex lens structure 201 (fig. 3) or the convex lens structures 201a and 201b (fig. 4) are formed automatically matching the groove 101 when the buffer layer and the insulating layer are formed on the substrate 100.
Fig. 5 is a schematic view of another cross-sectional structure taken along the line a-a' in fig. 2. Referring to fig. 5, in the present embodiment, the substrate base 100 is provided with the protrusion 102 in the light-transmitting region, and the top surface of the protrusion 102 is an arc surface (fig. 5 is a cross-sectional view showing that the protrusion 102 is an arc shape), when the protrusion 102 is formed on the substrate base 100, the protrusion 102 is automatically matched to form the convex lens structure 201 when the buffer layer and the insulating layer are formed on the substrate base 100.
It should be noted that, the formation of the grooves or the protrusions on the substrate 100 in fig. 3 to fig. 5 is only illustrative, in other embodiments, the surface of the substrate may be set to be a plane, the grooves or the protrusions may be formed on other film layers to form the convex lens structure, the grooves or the protrusions may also be formed on both the substrate and the other film layers, and the specific implementation may be selected according to actual conditions and processes, which is not limited in the embodiments of the present invention. In other embodiments, the bottom surface of the groove or the top surface of the protrusion may have other shapes, for example, a plurality of facets may be formed by splicing, and only a convex lens shape may be formed to have a light converging function.
Optionally, in the light-transmitting region, the substrate base plate and at least two of the plurality of film layers are provided with grooves or protrusions; the direction perpendicular to the plane of the substrate base plate and pointing to the light-emitting surface of the display panel from the substrate base plate is a first direction; the curvature radius of the grooves is increased in sequence along the first direction; alternatively, the radii of curvature of the lobes decrease in sequence.
Illustratively, fig. 6 and 7 are schematic views of still another cross-sectional structure taken along the cross-sectional line a-a' of fig. 2, respectively. Referring to fig. 6, the substrate 100 is provided with a groove 101, the film layer 210 is provided with a groove 212, by providing the groove 212, the film layer 220 can form a convex lens in the light-transmitting area, and by setting the curvature radius of the groove 212 in the first direction x to be greater than the curvature radius of the groove 101, it can be ensured that the film layer 210 is also a convex lens in the shape of the light-transmitting area, so as to enhance the light convergence capability of the light-transmitting area. Similarly, referring to fig. 7, the substrate base plate 100 is provided with the protrusion 102, the film layer 210 is provided with the protrusion 213, the substrate base plate 100 can be made to form a convex lens in the light-transmitting area by providing the protrusion 102 in the light-transmitting area of the substrate base plate 100, and by setting the curvature radius of the protrusion 213 in the first direction x to be smaller than the curvature radius of the protrusion 102, the film layer 210 can be ensured to be also in the shape of the convex lens in the light-transmitting area, so as to enhance the light convergence capability of the light-transmitting area.
It should be noted that the arrangement of the grooves or the protrusions in the two adjacent layers (the substrate base plate 100 and the film layer 210) in the embodiments of fig. 6 and fig. 7 is only illustrative, and in practical implementation, the film layers provided with the grooves or the protrusions may not be adjacent. In other embodiments, the surface of the substrate base plate can be set to be a plane, and grooves or protrusions are formed on other film layers to form the convex lens structure.
Optionally, the plurality of film layers comprise a plurality of organic layers and a plurality of inorganic layers; in the light-transmitting area, at least one organic layer is provided with a groove or a protrusion.
Fig. 8 is a schematic cross-sectional view taken along line a-a' of fig. 2. Illustratively, the display panel shown in fig. 8 includes four inorganic layers 210 to 240 and two organic layers 250 and 260, wherein the inorganic layer may be a silicon nitride or silicon oxide material for insulating the traces 211 in the driving circuits of different layers, the organic layer 250 may be a planarization layer for planarizing the film layer in the driving circuit region, the organic layer 260 may be a pixel defining layer, and an opening (not shown in fig. 8) of the pixel defining layer is used for defining the region where the light emitting element is located. In fig. 8, the organic layer 250 is provided with a groove 251 in the light transmitting region to form a convex lens structure. It is understood that in the formation of each film layer of the display panel, the organic layer is generally formed by coating, and has a thickness thicker than that of the inorganic layer, and is easily processed to form the grooves or the protrusions, and the inorganic layer is generally formed by a deposition process, such as chemical vapor deposition, and has a relatively thin thickness, and when deposited on the grooves or the protrusions, the convex lenses can be formed.
Optionally, the grooves or protrusions correspond to the light-transmitting regions one to one. With reference to fig. 8, in this embodiment, a groove is disposed in one light-transmitting area, so as to ensure that the light rays converged in the same light-transmitting area are relatively uniform, and improve the imaging quality of the camera.
Optionally, the plurality of film layers include a buffer layer, a plurality of insulating layers, a planarization layer, and a pixel defining layer, which are stacked; at least one of the substrate base plate, the planarization layer and the pixel defining layer is provided with a groove or a protrusion in the light transmitting region.
Fig. 9 is a schematic cross-sectional structure view along a sectional line B-B' in fig. 2, the display panel provided in the embodiment of the invention may be an organic light emitting display panel, referring to fig. 9, the left side of fig. 9 shows a schematic film of the light emitting region 21, the light emitting region 21 includes a driving circuit 23 and a light emitting element 24, the driving circuit 23 may be a 7T1C circuit including 7 transistors and 1 capacitor, fig. 9 only schematically shows one transistor T and one capacitor C, the transistor T includes an active layer P, a gate electrode G, a source electrode S and a drain electrode D, the capacitor C includes a first plate C1 and a second plate C2, and it can be understood that the gate electrode G of the transistor T and the first plate C1 of the capacitor C are in the same layer in this embodiment. The light emitting element 24 includes an anode 241, a light emitting layer 242, and a cathode 243 for emitting light under the control of the driving circuit 23 to realize display. Fig. 9 shows a film layer schematic diagram of the light-transmitting region 22, which includes a substrate 100, a buffer layer 270, a gate insulating layer 271, a capacitor insulating layer 272, a source-drain insulating layer 273, a planarization layer 274, and a pixel defining layer 275, and exemplarily, the substrate 100 is provided with a groove 101 in the light-transmitting region 22 to form a convex lens structure for light convergence, thereby improving the imaging quality.
Fig. 10 is a schematic cross-sectional view taken along line B-B' of fig. 2. Referring to fig. 10, optionally, the display panel provided in this embodiment further includes a thin film encapsulation layer 300, where the thin film encapsulation layer 300 includes at least one organic layer 310 and at least one inorganic layer 320; in the light-transmitting region 22, the surface of the organic layer 310 in the thin film encapsulation layer 300 facing away from the substrate 100 is planar.
For example, in the embodiment shown in fig. 10, the substrate 100 is provided with a groove 101 in the light-transmitting region 22, the pixel defining layer 275 is provided with a groove 276 in the light-transmitting region 22, and the groove 276 on the pixel defining layer 275 can enable the inorganic layer 320 in the thin film encapsulation layer 300 to form a convex lens structure. Because the effect of the thin film encapsulation layer 300 is to prevent small molecules such as water, oxygen from invading the inside of the display panel to cause the reduction of the service life of the inside of the display panel, no groove or protrusion structure is arranged on the organic layer of the thin film encapsulation layer 300, so as to ensure that the inorganic layer in the thin film encapsulation layer 300 has good film forming performance and avoid the function failure of the thin film encapsulation layer.
It should be noted that, in the embodiments shown in fig. 9 and fig. 10, the film layer is provided with the groove as an example, in other embodiments, the groove may be changed to be a protrusion, or a groove may be provided in some film layers, and a protrusion is provided in some film layers, so that it is only necessary to ensure that the light-transmitting region can form a convex lens structure with a function of converging light.
Fig. 11 is a schematic partial structure diagram of a display panel according to an embodiment of the present invention. Referring to fig. 11, optionally, the first display region includes a plurality of first pixel units 111 arranged in an array, and the second display region 20 includes a plurality of second pixel units 222 arranged in an array; the pixel cell density of the first display region is greater than the pixel cell density of the second display region 20.
It can be understood that, by reducing the pixel unit density of the second display area 20, the area of the transparent area can be effectively increased, so as to ensure that the transparent area transmits enough light, and improve the shooting effect. In other embodiments, optionally, the first display region includes a plurality of first pixel units arranged in an array, each of the first pixel units includes first sub-pixels of a plurality of different emission colors; the second display area comprises a plurality of second pixel units which are arranged in an array, and each second pixel unit comprises a plurality of second sub-pixels with different light-emitting colors; the sub-pixel density of the first display area is greater than that of the second display area. That is, similar to the reduction of the pixel unit density of the second display area, since each pixel unit includes a plurality of sub-pixels with different light emission colors, the purpose of increasing the light transmission area can be achieved by removing the sub-pixels in some pixel units in the second display area. In addition, the area of the projection of the pixel units in the second display area on the substrate can be reduced, and the light transmittance can be increased.
Optionally, two adjacent film layers in the plurality of film layers are arranged in a contact manner, and one side of the plurality of film layers, which is close to the substrate base plate, is arranged in a contact manner with the substrate base plate; the refractive index of the film layer including the convex lens structure is larger than the refractive index of the film layer adjacent to the film layer and close to one side of the substrate base plate.
For example, with reference to fig. 10, in a specific implementation, the refractive index of the inorganic layer 320 may be set to be greater than the refractive index of the pixel defining layer 275, so that the convex lens structure formed on the inorganic layer 320 has a light converging effect, and the imaging effect of the camera is improved.
Fig. 12 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present invention, which is used for manufacturing any one of the display panels according to the above embodiments. Referring to fig. 12, the method for manufacturing a display panel provided in this embodiment includes:
s110, providing a substrate base plate, wherein the substrate base plate comprises a first display area and a second display area adjacent to the first display area, and the second display area is reused as a light sensor reserved area; the second display region includes a plurality of light emitting regions and a plurality of light transmitting regions.
The substrate may be a rigid substrate, such as a glass substrate, or a flexible substrate, such as a polyimide substrate, and the optical sensor may be a camera.
And S120, forming a plurality of film layers on one side of the substrate, wherein in the light-transmitting area, the substrate and/or at least one of the film layers is/are provided with a convex lens structure.
Wherein, a plurality of retes include buffer layer, semiconductor layer, insulating layer, metal routing layer, planarization layer, pixel and prescribe a limit to the layer, light emitting element's anode layer, luminescent layer and cathode layer etc. and at least one rete in substrate base plate and/or a plurality of rete in the light-transmitting zone is formed with convex lens structure for assemble the light of external incident, promote the formation of image effect of camera.
According to the display panel prepared by the preparation method provided by the embodiment of the invention, the plurality of light-transmitting areas are arranged in the second display area, external light can be transmitted through the display panel by the light-transmitting areas so as to be received by the optical sensor (such as a camera), and normal display of the second display area can be realized by arranging the plurality of light-emitting areas in the second display area, so that the screen occupation ratio of the display panel is improved, and full-screen display is realized; at least one rete through in substrate base plate and/or a plurality of rete in the printing opacity district sets up the convex lens structure, and when external light incided, the convex lens structure assembles external light, and reinforcing transmission luminous intensity improves the imaging quality.
Optionally, before forming the plurality of film layers on one side of the substrate base plate, the method further includes:
in the light-transmitting area, a groove or a bulge is formed on the surface of one side of the substrate, which faces the light-emitting surface of the display panel, and the bottom surface of the groove or the top surface of the bulge is an arc surface.
Optionally, forming a plurality of film layers on one side of the substrate, and in the light-transmitting region, forming a convex lens structure on the substrate and/or at least one of the film layers includes:
forming a plurality of film layers on a substrate;
after at least one film layer is formed, a groove or a bulge is formed on the surface of the light-transmitting area of the film layer, and the bottom surface of the groove or the top surface of the bulge is an arc surface.
Optionally, the recess or the protrusion is formed by an etching process.
It can be understood that the etching process adopted in this embodiment may be chemical etching or photo etching, and when chemical etching is adopted, the concentration of the etching liquid in different areas may be controlled to form a groove or a protrusion on the etched film; when the photoetching is adopted, the light intensity of different areas can be controlled, so that the groove or the bulge is formed on the etching thickness film layer. For example, fig. 13 is a schematic structural diagram illustrating a groove formed in a substrate or a film. Referring to fig. 13, an area other than the light transmitting area is shielded by a mask plate 400, and then the light transmitting area is etched to form a groove. Fig. 14 is a schematic structural view showing a protrusion formed on a substrate or a film layer. Referring to fig. 14, the film layer is formed into a convex structure by controlling the etching speed of different regions by regions.
Optionally, the plurality of film layers include a pixel defining layer, the pixel defining layer is formed by an inkjet printing process, and the convex lens structure is formed on the pixel defining layer in the light transmitting region by controlling an inkjet printing speed.
It will be appreciated that by the ink jet printing process, the printing speed can be set according to the shape of the film layer to be formed, thereby forming grooves or protrusions, and thus forming the lenticular structure with a converging action.
Fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention. Referring to fig. 15, the display device 1 provided in this embodiment includes any one of the display panels 2 provided in the foregoing embodiments, and further includes a light sensor module 3 disposed in the second display area of the display panel 2 and located on a side of the substrate away from the light emitting surface, where a light sensing surface of the light sensor module 3 faces the display panel 2. The display device 1 may be a mobile phone, a tablet computer, or the like.
It is understood that the light sensor module 3 may be a camera. The display device provided by the embodiment of the invention comprises any one of the display panels provided by the above embodiments, and has the same and corresponding technical effects.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (16)
1. A display panel is characterized by comprising a first display area and a second display area adjacent to the first display area, wherein the second display area is reused as a light sensor reserved area;
the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas;
the display panel further comprises a substrate and a plurality of film layers positioned on one side of the substrate;
wherein, in the light-transmitting region, the substrate base plate and/or at least one of the plurality of film layers comprises a convex lens structure;
the film layers comprise pixel limiting layers, and grooves or protrusions are arranged on the pixel limiting layers in the light-transmitting areas to form convex lens structures.
2. The display panel of claim 1, wherein the substrate base plate and at least two adjacent film layers of the plurality of film layers comprise a lenticular structure within the light-transmissive region.
3. The display panel according to claim 1, wherein in the light-transmitting region, the substrate base plate and/or at least one of the film layers is provided with a groove, and a bottom surface of the groove is an arc surface; alternatively, the first and second electrodes may be,
in the light-transmitting area, the substrate base plate and/or at least one of the film layers is/are provided with a protrusion, and the top surface of the protrusion is an arc surface.
4. The display panel according to claim 3, wherein the substrate base plate and at least two of the plurality of film layers are provided with a groove or a protrusion in the light-transmitting region;
the direction perpendicular to the plane of the substrate base plate and pointing to the light-emitting surface of the display panel from the substrate base plate is a first direction;
the curvature radiuses of the grooves are sequentially increased along the first direction; alternatively, the radii of curvature of the projections decrease in sequence.
5. The display panel according to claim 3, wherein the plurality of film layers include a plurality of organic layers and a plurality of inorganic layers;
in the light-transmitting area, at least one organic layer is provided with the groove or the protrusion.
6. The display panel according to claim 3, wherein the grooves or the protrusions correspond to the light-transmitting regions one to one.
7. The display panel according to claim 3, wherein the plurality of film layers include a buffer layer, a plurality of insulating layers, and a planarization layer, which are stacked;
at least one of the substrate base plate and the planarization layer is provided with a groove or a protrusion in the light-transmitting area.
8. The display panel according to claim 1, further comprising a thin film encapsulation layer comprising at least one organic layer and at least one inorganic layer;
in the light-transmitting area, the surface of one side, deviating from the substrate, of the organic layer in the film packaging layer is planar.
9. The display panel according to claim 1, wherein the first display region includes a plurality of first pixel units arranged in an array, and the second display region includes a plurality of second pixel units arranged in an array;
the density of the pixel units of the first display area is greater than that of the pixel units of the second display area.
10. The display panel according to claim 1, wherein two adjacent film layers of the plurality of film layers are disposed in contact, and wherein a side of the plurality of film layers adjacent to the substrate base plate is disposed in contact with the substrate base plate;
the refractive index of the film layer including the convex lens structure is larger than the refractive index of the film layer adjacent to the film layer and close to one side of the substrate base plate.
11. A method for manufacturing a display panel, comprising:
providing a substrate, wherein the substrate comprises a first display area and a second display area adjacent to the first display area, and the second display area is reused as a reserved area of a light sensor; the second display area comprises a plurality of light emitting areas and a plurality of light transmitting areas;
forming a plurality of film layers on one side of the substrate base plate, wherein a convex lens structure is formed on the substrate base plate and/or at least one of the film layers in the light-transmitting area;
the film layers comprise pixel limiting layers, and grooves or protrusions are arranged on the pixel limiting layers in the light-transmitting areas to form convex lens structures.
12. The method for manufacturing a semiconductor device according to claim 11, further comprising, before forming the plurality of film layers on the substrate side of the substrate:
in the light-transmitting area, a groove or a protrusion is formed on the surface of one side, facing the light-emitting surface of the display panel, of the substrate base plate, and the bottom surface of the groove or the top surface of the protrusion is an arc surface.
13. The method of claim 11, wherein forming a plurality of layers on one side of the substrate base plate, and wherein forming the substrate base plate and/or at least one of the plurality of layers with a lenticular lens structure in the light-transmissive region comprises:
forming a plurality of film layers on the substrate base plate;
after at least one film layer is formed, a groove or a protrusion is formed on the surface of a light transmission area of the film layer, and the bottom surface of the groove or the top surface of the protrusion is an arc surface.
14. A production method according to claim 12 or 13, wherein the groove or the projection is formed by an etching process.
15. The method of claim 11, wherein the pixel defining layer is formed using an inkjet printing process, and the convex lens structure is formed on the pixel defining layer in the light transmitting region by controlling an inkjet printing rate.
16. A display device comprising the display panel according to any one of claims 1 to 10, further comprising:
and the optical sensor module is arranged in the second display area of the display panel and is positioned on one side of the substrate, which deviates from the light-emitting surface, and the light-sensitive surface of the optical sensor module faces the display panel.
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| CN202210002893.8A CN114361230A (en) | 2019-09-30 | 2019-09-30 | Display panel, preparation method and display device |
| CN201910945541.4A CN110649081B (en) | 2019-09-30 | 2019-09-30 | Display panel, preparation method and display device |
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