CN111933676A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN111933676A CN111933676A CN202010832201.3A CN202010832201A CN111933676A CN 111933676 A CN111933676 A CN 111933676A CN 202010832201 A CN202010832201 A CN 202010832201A CN 111933676 A CN111933676 A CN 111933676A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
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- 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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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
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- 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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Abstract
The invention provides a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display. The optical adjusting layer is arranged on one side, far away from the display substrate, of the packaging layer, the display substrate comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit; the optical adjusting layer comprises optical adjusting units which correspond to the pixel units one by one, each optical adjusting unit comprises a first optical adjusting structure corresponding to each transparent subunit, and the first optical adjusting structures perform double refraction on the transmission light rays transmitted from the transparent subunits so as to enlarge an effective light transmission area when the transmission light rays are emitted from the display panel. The double refraction is carried out on the transmission light rays transmitted by the transparent subunits through the first optical adjusting structure, the effective light transmitting area of the transmission light rays is enlarged, the diffraction phenomenon of each transmission light ray is reduced, the coherent superposition of each diffraction light ray is weakened, and the ghost phenomenon is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a display device.
Background
With the development of display technologies, transparent display technologies gradually come into people's lives, for example, the transparent display technologies can be applied to different scenes such as transparent refrigerators, transparent show windows, traffic signs, transparent vehicle-mounted displays, and the like.
At present, a transparent display panel includes a plurality of pixel units, each pixel unit includes a sub-pixel and a transparent sub-unit, and in a screen-off state, an object behind the display panel can be seen through the transparent sub-unit, and in a display state, a picture displayed on the display panel can be seen through the sub-pixel, and the object behind the display panel can be seen through the transparent sub-unit at the same time.
However, when the current display panel is used, transmitted light rays transmitted through each transparent subunit are diffracted, and the diffracted light rays are coherently superposed, so that an object seen through the display panel has a ghost phenomenon, and visual experience of a user is affected.
Disclosure of Invention
The invention provides a display panel, a manufacturing method thereof and a display device, and aims to solve the problem that when the existing display panel is used, transmitted light rays transmitted from each transparent subunit are diffracted and coherently superposed, so that an object seen through the display panel has a double image phenomenon.
In order to solve the above problems, the present invention discloses a display panel including: the display device comprises a display substrate, an encapsulation layer covering the display substrate and an optical adjusting layer arranged on one side, far away from the display substrate, of the encapsulation layer;
the display substrate comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit;
the optical adjusting layer comprises optical adjusting units which correspond to the pixel units one by one, and each optical adjusting unit comprises a first optical adjusting structure corresponding to each transparent subunit;
the first optical adjustment structure is configured to perform birefringence on the transmitted light rays transmitted from the transparent sub-unit so as to enlarge an effective light transmission area when the transmitted light rays exit from the display panel.
Optionally, the first optical adjustment structure includes a first optical adjustment region, and a material of the first optical adjustment region is doped with an anisotropic material.
Optionally, an orthographic projection of the first optical adjustment area on the display substrate covers an area where the transparent subunit is located.
Optionally, the first optical adjustment structure further comprises an open area;
the orthographic projection of the first optical adjustment area on the display substrate and the area where the transparent subunit is located form a first overlapping area, and the orthographic projection of the opening area on the display substrate and the area where the transparent subunit is located form a second overlapping area.
Optionally, the sizes of the first overlapping areas corresponding to any two first optical adjustment structures in the same optical adjustment unit are not the same.
Optionally, each of the optical adjustment units further includes a second optical adjustment structure corresponding to each of the sub-pixels;
the second optical adjusting structure is configured to perform birefringence on the emergent light rays emitted by the sub-pixels so as to enlarge an effective light emitting area when the emergent light rays are emitted from the display panel, and/or filter the emergent light rays emitted by the sub-pixels.
Optionally, the second optical adjustment structure comprises a second optical adjustment region, and the material of the second optical adjustment region is doped with an anisotropic material and/or a color filter material.
Optionally, the orthographic projection of the second optical adjustment area on the display substrate covers an area where the sub-pixel is located.
Optionally, the second optical adjustment structure further includes a third optical adjustment region, and a material of the third optical adjustment region is doped with a color filter material;
and the orthographic projection of the second optical adjusting area on the display substrate and the area where the sub-pixel is located form a third overlapping area, and the orthographic projection of the third optical adjusting area on the display substrate is located in the area where the sub-pixel is located.
In order to solve the above problem, the present invention also discloses a method for manufacturing a display panel, comprising:
providing a display substrate; the display substrate comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit;
forming an encapsulation layer covering the display substrate;
forming an optical adjusting layer on one side of the packaging layer far away from the display substrate;
wherein the optical adjustment layer includes optical adjustment units corresponding to the pixel units one by one, each of the optical adjustment units including a first optical adjustment structure corresponding to each of the transparent sub-units; the first optical adjustment structure is configured to perform birefringence on the transmitted light rays transmitted from the transparent sub-unit so as to enlarge an effective light transmission area when the transmitted light rays exit from the display panel.
In order to solve the above problem, the present invention further discloses a display device, including the above display panel.
Compared with the prior art, the invention has the following advantages:
in the embodiment of the invention, an encapsulation layer covering a display substrate is arranged, and an optical adjusting layer is arranged on one side of the encapsulation layer far away from the display substrate, wherein the display substrate comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit; the optical adjusting layer comprises optical adjusting units which correspond to the pixel units one by one, each optical adjusting unit comprises a first optical adjusting structure corresponding to each transparent subunit, and the first optical adjusting structures perform double refraction on the transmission light rays transmitted from the transparent subunits so as to enlarge an effective light transmission area when the transmission light rays are emitted from the display panel. Set up the optics regulation layer through keeping away from display substrate one side at the encapsulation layer, first optics in the optics regulation layer is adjusted the structure and can be carried out the birefringence to the transmitted transmission light of transparent subelement, thereby enlarge the effective light zone of passing through when transmission light is followed display panel outgoing, when the size increase of the effective light zone of passing through light, every transmission light when following display panel outgoing then is difficult to take place the diffraction, the diffraction phenomenon of every transmission light has been reduced promptly, and then the coherent stack of each diffraction light has been weakened, the ghost image phenomenon of the object that sees through display panel has been improved, user's visual experience has been improved.
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 structural diagram of another display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a display panel according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a schematic structural diagram of a display panel according to an embodiment of the present invention is shown, fig. 2 is a schematic structural diagram of another display panel according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention.
An embodiment of the present invention provides a display panel, including: the display device comprises a display substrate 10, an encapsulation layer 20 covering the display substrate 10, and an optical adjustment layer 30 arranged on one side of the encapsulation layer 20 far away from the display substrate 10.
The display substrate 10 includes a plurality of pixel units 11, each pixel unit 11 includes a plurality of sub-pixels 112 and at least one transparent sub-unit 111; the optical adjustment layer 30 includes optical adjustment units corresponding one-to-one to the pixel units 11, each of which includes a first optical adjustment structure 31 corresponding to each of the transparent sub-units 111; the first optical adjustment structure 31 is configured to apply birefringence to the transmitted light rays transmitted from the transparent sub-unit 111 to expand an effective light transmission area when the transmitted light rays exit from the display panel.
Specifically, the display substrate 10 includes a back plate 12 and a plurality of pixel units 11 disposed on the back plate 12, each pixel unit 11 includes a plurality of sub-pixels 112 and at least one transparent sub-unit 111, the number of the transparent sub-units 111 in each pixel unit 11 may be one or more, and the sub-pixels 112 and the transparent sub-units 111 in each pixel unit 11 may be alternately distributed, or the transparent sub-units 111 are disposed between any two adjacent sub-pixels 112. In addition, the display substrate 10 further includes a pixel defining layer 13 disposed on the back plate 12 and defining the sub-pixels 112 and the transparent sub-units 111.
In an actual product, the backplane 12 includes a substrate and a driving function layer disposed on the substrate, and the driving function layer is actually a pixel driving circuit structure for driving the sub-pixels 112 to emit light. For example, the driving function layer includes an active layer disposed on the substrate, a gate insulating layer covering the substrate and the active layer, a gate layer disposed on the gate insulating layer, an interlayer dielectric layer covering the gate layer and the gate insulating layer, and a source drain electrode layer disposed on the interlayer dielectric layer, the source drain electrode layer being connected to the active layer through a first via hole penetrating the interlayer dielectric layer and the gate insulating layer, and the driving function layer further includes a planarization layer covering the source drain electrode layer and the interlayer dielectric layer.
Moreover, the sub-pixel 112 is actually a display device, the display device includes an anode disposed on the planarization layer, and the anode is connected to the source drain electrode layer through a second via hole penetrating through the planarization layer, the pixel defining layer 13 in the display substrate 10 covers the planarization layer and a part of the anode, the pixel defining layer 13 has a plurality of pixel openings, and the anode in the pixel openings is not covered by the pixel defining layer; in addition, the display device further includes a light emitting layer disposed within the pixel opening and a cathode covering the pixel defining layer and the light emitting layer. When a first voltage is applied to the anode electrode through the driving functional layer and a second voltage is applied to the cathode electrode, the light emitting layer in the pixel opening emits light under the control of a difference between the first voltage and the second voltage.
In addition, the transparent subunit 111 may not have any film layer structure, and certainly, a transparent film layer may also be disposed at the transparent subunit 111, as long as light on a side of the back plate 12 away from the sub-pixel 112 is ensured to be transmitted from the transparent subunit 111, which is not limited in this embodiment of the present invention. For example, when the cathode of the sub-pixel 112 is manufactured, the cathode made of a transparent metal material may extend to the transparent sub-unit 111, that is, the cathode is disposed at the transparent sub-unit 111.
And the encapsulation layer 20 may actually be an organic encapsulation layer, an inorganic encapsulation layer, or a stacked structure of an organic encapsulation layer and an inorganic encapsulation layer.
In the embodiment of the present invention, when the display panel is in the off-screen state, since the light of the back plate 12 on the side away from the sub-pixel 112 can be transmitted from the transparent sub-unit 111, the object behind the display panel can be seen through the transparent sub-unit 111; when the display panel is in the display state, since the sub-pixel 112 can emit light and the light on the side of the back plate 12 away from the sub-pixel 112 can be transmitted through the transparent sub-unit 111, the picture displayed on the display panel can be seen through the sub-pixel 112, and the object behind the display panel can be seen through the transparent sub-unit 111 at the same time.
However, if the optical adjustment layer 30 is not disposed on the side of the encapsulation layer 20 away from the display substrate 10, and the size of the transparent subunit 111 is smaller in the effective light-transmitting area of the transmitted light transmitted from the transparent subunit 111, that is, the area where the transparent subunit 111 is located, the transmitted light transmitted from each transparent subunit 111 is diffracted, and the diffracted lights are coherently superimposed, so that the ghost phenomenon occurs in the object viewed through the display panel.
Therefore, in the embodiment of the present invention, the optical adjustment layer 30 is disposed on the side of the encapsulation layer 20 away from the display substrate 10, the optical adjustment layer 30 includes optical adjustment units corresponding to the pixel units 11 one by one, each optical adjustment unit includes a first optical adjustment structure 31 corresponding to each transparent subunit 111, the transmitted light transmitted from the transparent subunit 111 is incident to the first optical adjustment structure 31, the first optical adjustment structure 31 can perform birefringence on the transmitted light, the transmitted light is decomposed into o light (ordinary light) and e light (extraordinary light), the o light and the e light obtained by decomposition are polarized lights with vibration directions perpendicular to each other and with different propagation speeds, the o light obeys the refraction law, the propagation speed and the refractive index of the e light along each direction are the same, the e light does not obey the refraction law, and the propagation speed and the refractive index of the e light along each direction are different. After the first optical adjustment structure 31 performs birefringence on the transmitted light, o light and e light obtained by decomposing the transmitted light are emitted from the light emitting surface of the display panel at different refraction angles, so that an effective light transmission area when the transmitted light is emitted from the display panel can be enlarged, namely, the effective light transmission area can be enlarged from an area where an original transparent subunit is located to an area where the first optical adjustment structure 31 is located, when the size of the effective light transmission area is increased, each transmitted light emitted from the display panel is not easy to diffract, namely, the diffraction phenomenon of each transmitted light is reduced, further, coherent superposition of each diffracted light is weakened, and the ghost phenomenon of an object seen through the display panel is improved.
And according to the conservation of light energy, the transmitted light is decomposed into o light and e light through birefringence, the light energy before and after the decomposition is not changed, the intensities of the o light and the e light relative to the transmitted light are weakened, namely the two secondary diffraction peaks after the diffraction coherent superposition of the o light and the e light are changed into two, and the intensities of the two secondary diffraction peaks are lower relative to the intensity of the secondary diffraction peak after the diffraction coherent superposition of the whole transmitted light, so that the ghost caused by the diffraction light coherent superposition is further reduced.
In an embodiment of the present invention, as shown in fig. 1 to 3, the first optical adjustment structure 31 includes a first optical adjustment region 311, and the material of the first optical adjustment region 311 is doped with an anisotropic material.
The material of the first optical adjustment region 311 may be an organic material, the organic material is doped with an anisotropic material, and based on the anisotropic material, the first optical adjustment region 311 may implement birefringence on the transmission light transmitted from the transparent subunit 111, so as to enlarge the size of the effective light transmission region.
In an alternative embodiment of the present invention, as shown in fig. 3, the orthographic projection of the first optical adjustment region 311 on the display substrate 10 covers the area where the transparent subunit 111 is located. At this time, the first optical adjustment structure 31 includes only the first optical adjustment region 311.
In another alternative embodiment of the present invention, as shown in fig. 1 and 2, the first optical adjustment structure 31 further includes an open area 312; the orthographic projection of the first optical adjustment area 311 on the display substrate 10 and the area where the transparent subunit 111 is located have a first overlapping area, and the orthographic projection of the opening area 312 on the display substrate 10 and the area where the transparent subunit 111 is located have a second overlapping area.
At this time, the first optical adjustment structure 31 includes a first optical adjustment region 311 and an opening region 312, the first optical adjustment region 311 is an organic material doped with an anisotropic material, based on the anisotropic material, the first optical adjustment region 311 can implement birefringence on the transmitted light transmitted from the transparent sub-unit 111, no material is disposed at the opening region 312, and the transmitted light transmitted by the transparent sub-unit 111 can normally exit from the opening region 312.
As shown in fig. 1, the first optical adjustment structure 31 includes an opening area 312 and first optical adjustment areas 311 located on either side of the opening area 312. At this time, there is a first overlapping area between the orthographic projection of the first optical adjustment region 311 on the display substrate 10 and the area where the transparent subunit 111 is located, and there is also an overlapping area between the orthographic projection of the first optical adjustment region 311 on the display substrate 10 and the pixel defining layer 13; there is a second overlapping area between the orthographic projection of the opening area 312 on the display substrate 10 and the area where the transparent subunit 111 is located, and there is also an overlapping area between the orthographic projection of the opening area 312 on the display substrate 10 and the pixel defining layer 13.
As shown in fig. 2, the first optical adjustment structure 31 includes an opening area 312 and a first optical adjustment area 311 surrounding the opening area 312, i.e., only the first optical adjustment areas 311 respectively located at both sides of the opening area 312 can be seen in the cross-sectional view shown in fig. 2. At this time, there is a first overlapping area between the orthographic projection of the first optical adjustment region 311 on the display substrate 10 and the area where the transparent subunit 111 is located, and there is also an overlapping area between the orthographic projection of the first optical adjustment region 311 on the display substrate 10 and the pixel defining layer 13; the orthographic projection of the open area 312 on the display substrate 10 is located within the area where the transparent subunit 111 is located.
Further, when there is a first overlapping area between the orthographic projection of the first optical adjustment region 311 on the display substrate 10 and the area where the transparent subunit 111 is located, the sizes of the first overlapping areas corresponding to any two first optical adjustment structures 31 in the same optical adjustment unit are not the same.
When the sizes of the first overlapping areas corresponding to any two first optical adjustment structures 31 in the same optical adjustment unit are not consistent, the sizes of the effective light-transmitting areas when the transmission light rays are emitted from each first optical adjustment structure 31 are not consistent, so that the phenomenon of interference of diffraction light rays which are diffracted after being emitted from each effective light-transmitting area can be reduced, and ghost images caused by coherent superposition of the diffraction light rays can be further improved.
It should be noted that, if the same optical adjustment unit includes a plurality of first optical adjustment structures 31 along the row direction of the display substrate, the size of the first overlapping area may be the size of the row direction and/or the column direction.
In an embodiment of the present invention, as shown in fig. 1 to 3, each optical adjustment unit further includes a second optical adjustment structure 32 corresponding to each sub-pixel 112; the second optical adjustment structure 32 is configured to perform birefringence on the outgoing light rays emitted from the sub-pixels 112, to enlarge an effective light outgoing area when the outgoing light rays are emitted from the display panel, and/or to filter the outgoing light rays emitted from the sub-pixels 112.
The sub-pixels 112 themselves can emit light, the outgoing light emitted from the sub-pixels 112 enters the second optical adjustment structure 32, the second optical adjustment structure 32 performs birefringence on the outgoing light, the outgoing light is decomposed into o light and e light, the o light and the e light obtained by the splitting of the outgoing light exit from the light exit surface of the display panel at different refraction angles, and the effective light exit area when the outgoing light exits from the display panel can be enlarged, that is, the effective light exit area is enlarged from the original area where the sub-pixels 112 are located to the area where the second optical adjustment structure 32 is located. Since the transmitted light transmitted from the transparent sub-pixel 111 still undergoes a certain degree of diffraction coherent superposition after being emitted from the first optical adjustment structure 31, thereby generating light and dark alternating stripes, and the light and dark alternating stripes appear at the position of the pixel defining layer 13 between the sub-pixel 112 and the transparent sub-unit 111, by enlarging the size of the effective light emitting area, the light emitted from the effective light emitting area can cover the position of the pixel defining layer 13 between the sub-pixel 112 and the transparent sub-unit 111, and the brightness of the light of the effective light emitting area is greater than that of the light and dark stripes generated after the diffraction coherent superposition, therefore, by enlarging the size of the effective light emitting area, the light and dark contrast of the area between the sub-pixel 112 and the transparent sub-unit 111 can be balanced, thereby improving the uniformity of the display brightness of the display panel.
Wherein the second optical adjustment structure 32 comprises a second optical adjustment region 321, the material of the second optical adjustment region 321 being doped with an anisotropic material and/or a color filter material.
Wherein the material of the second optical adjustment region 321 may be an organic material. When the organic material is doped with only the anisotropic material, based on the anisotropic material, the second optical adjustment region 321 may implement birefringence on the outgoing light from the sub-pixel 112 to enlarge the size of the effective light outgoing region; when only the color filter material is doped in the organic material, the second optical adjustment region 321 may filter the outgoing light emitted from the sub-pixel 112; when both the anisotropic material and the color filter material are doped in the organic material, the second optical adjustment region 321 filters the outgoing light from the sub-pixel 112 while achieving birefringence of the outgoing light from the sub-pixel 112.
In the first case, the color of the light emitted from each sub-pixel 112 included in each pixel unit 11 of the display substrate 10 is white, and the light emitted from each sub-pixel 112 can be filtered by the color filter material doped in the material of the second optical adjustment region 321, so that the whole display panel can realize color display. Specifically, each optical adjustment unit includes a different color filter material doped in the second optical adjustment region 321 of the respective second optical adjustment structure 32.
For example, each optical adjustment unit includes 3 second optical adjustment structures 32, the second optical adjustment region 321 in the first second optical adjustment structure 32 is doped with a first color filter material, the second optical adjustment region 321 in the second optical adjustment structure 32 is doped with a second color filter material, the second optical adjustment region 321 in the third second optical adjustment structure 32 is doped with a third color filter material, and the first color filter material allows only red light to pass through, light rays of other colors than red light are filtered out, the second color filter material allows only green light to pass through, light rays of other colors than green light are filtered out, the third color filter material allows only blue light to pass through, and light rays of other colors than blue light are filtered out.
In the second case, each pixel unit 11 in the display substrate 10 includes a different color of light emitted from each sub-pixel 112, each optical adjustment unit includes a different color filter material doped in the second optical adjustment region 321 of each second optical adjustment structure 32, and each second optical adjustment region 321 allows light passing through the same color as the corresponding sub-pixel 112.
When the color of light allowed to pass through each second optical adjustment region 321 is the same as the color of light emitted by the corresponding sub-pixel 112, the color filter material doped in the material of the second optical adjustment region 321 can re-filter the light emitted by each sub-pixel 112, and the color gamut of the display panel can be improved, so that the display effect of the display panel is better.
For example, each pixel unit 11 includes 3 sub-pixels 112, where the first sub-pixel 112 is a red sub-pixel and emits light of a red color, the second sub-pixel 112 is a green sub-pixel and emits light of a green color, and the third sub-pixel 112 is a blue sub-pixel and emits light of a blue color; accordingly, the second optical adjustment region 321 of the first second optical adjustment structure 32 corresponding to the first sub-pixel 112 is doped with a first color filter material, the second optical adjustment region 321 of the second optical adjustment structure 32 corresponding to the second sub-pixel 112 is doped with a second color filter material, and the second optical adjustment region 321 of the third second optical adjustment structure 32 corresponding to the third sub-pixel 112 is doped with a third color filter material, and the first color filter material allows only red light to pass, the second color filter material allows only green light to pass, and the third color filter material allows only blue light to pass.
In an alternative embodiment of the present invention, as shown in fig. 1 and 2, the orthographic projection of the second optical adjustment area 321 on the display substrate 10 covers the area where the pixels 112 are located. At this time, the second optical adjustment structure 32 includes only the second optical adjustment region 321, and the material of the second optical adjustment region 321 is doped with an anisotropic material and/or a color filter material.
In another alternative embodiment of the present invention, as shown in fig. 3, the second optical adjustment structure 32 further comprises a third optical adjustment region 322, the material of the third optical adjustment region 322 being doped with a color filter material; a third overlapping area exists between the orthographic projection of the second optical adjustment area 321 on the display substrate 10 and the area where the sub-pixel 112 is located, and the orthographic projection of the third optical adjustment area 322 on the display substrate 10 is located in the area where the sub-pixel 112 is located.
In fig. 3, the second optical conditioning structure 32 comprises a third optical conditioning region 322 and a second optical conditioning region 321 surrounding the third optical conditioning region 322, i.e. only the second optical conditioning regions 321 on both sides of the third optical conditioning region 322 can be seen in the sectional view shown in fig. 3. At this time, a third overlapping area exists between the orthographic projection of the second optical adjustment area 321 on the display substrate 10 and the area where the sub-pixel 112 is located, and the orthographic projection of the third optical adjustment area 322 on the display substrate 10 is located in the area where the sub-pixel 112 is located.
Also, both the anisotropic material and the color filter material may be doped in the material of the second optical adjustment region 321, and only the color filter material may be doped in the material of the third optical adjustment region 322; alternatively, the anisotropic material may be doped in the material of the second optical adjustment region 321, and the color filter material may be doped in the material of the third optical adjustment region 322.
It should be noted that, in an actual product, the display substrate 10 includes a plurality of pixel units 11 arranged in an array, and the sub-pixels 112 and the transparent sub-units 111 in fig. 1 to 3, only a specific constituent structure of one pixel unit 11 is shown; accordingly, the optical adjustment layer 30 includes a plurality of optical adjustment units arranged in an array, a first optical adjustment structure 31 and a second optical adjustment structure 32 in fig. 1 to 3, and only a specific constituent structure of one optical adjustment unit is shown. Wherein the pixel units 11 correspond to the optical adjustment units one by one, the transparent sub-unit 111 in the pixel unit 11 corresponds to the position of the first optical adjustment structure 31 in the optical adjustment unit, and the sub-pixel 112 in the pixel unit 11 corresponds to the position of the second optical adjustment structure 32 in the optical adjustment unit.
In the embodiment of the invention, the optical adjusting layer is arranged on one side of the packaging layer, which is far away from the display substrate, and the first optical adjusting structure in the optical adjusting layer can perform double refraction on the transmission light rays transmitted by the transparent subunit, so that the effective light transmitting area of the transmission light rays emitted from the display panel is enlarged, when the size of the effective light transmitting area of the transmission light rays is increased, each transmission light ray emitted from the display panel is not easy to diffract, namely the diffraction phenomenon of each transmission light ray is reduced, the coherent superposition of each diffraction light ray is weakened, the ghost phenomenon of an object seen through the display panel is improved, and the visual experience of a user is improved.
Example two
Referring to fig. 4, a flowchart of a method for manufacturing a display panel according to an embodiment of the present invention is shown, which may specifically include the following steps:
In the embodiment of the invention, first, a display substrate 10 is fabricated, where the display substrate 10 includes a plurality of pixel units 11, and each pixel unit 11 includes a plurality of sub-pixels 112 and at least one transparent sub-unit 111.
Specifically, firstly, an active layer, a gate insulating layer, a gate layer, an interlayer dielectric layer, a source drain electrode layer and a flat layer are sequentially formed on a substrate to realize the formation of a driving function layer on the substrate to obtain a back plate 12; then, an anode is formed on the flat layer of the back plate 12; then, forming a pixel defining layer 13 covering the flat layer and part of the anode, wherein the pixel defining layer 13 is provided with a plurality of pixel openings; finally, a light-emitting layer is formed in the pixel opening, and a cathode covering the pixel defining layer and the light-emitting layer is formed, so that the sub-pixel 112 and the pixel defining layer 13 are formed on the back plate 12, and finally the display substrate 10 is manufactured.
If there is no film structure at the transparent sub-unit 111, correspondingly, after the sub-pixels 112 and the pixel defining layer 13 are formed on the back plate 12, the transparent sub-unit 111 can be directly formed on the back plate 12; if a transparent film layer, such as a cathode, is disposed on the transparent sub-unit 111, the formation of the transparent sub-unit 111 on the back plate 12 is also achieved after the cathode of the sub-pixel 112 is formed on the back plate 12.
In the embodiment of the present invention, after the display substrate 10 is manufactured, the encapsulation layer 20 covering the display substrate 10 is formed, and the encapsulation layer 20 may be an organic encapsulation layer, an inorganic encapsulation layer, or a stacked structure of an organic encapsulation layer and an inorganic encapsulation layer.
And step 403, forming an optical adjusting layer on one side of the packaging layer far away from the display substrate.
In the embodiment of the present invention, after the encapsulation layer 20 covering the display substrate 10 is formed, the optical adjustment layer 30 is formed on the side of the encapsulation layer 20 away from the display substrate 10.
Wherein the optical adjustment layer 30 includes optical adjustment units corresponding one-to-one to the pixel units 11, each of which includes a first optical adjustment structure 31 corresponding to each of the transparent sub-units 111; the first optical adjustment structure 31 is configured to apply birefringence to the transmitted light rays transmitted from the transparent sub-unit 111 to expand an effective light transmission area when the transmitted light rays exit from the display panel.
Furthermore, each optical adjustment unit further comprises a second optical adjustment structure 32 corresponding to each sub-pixel 112; the second optical adjustment structure 32 is configured to perform birefringence on the outgoing light rays emitted from the sub-pixels 112, to enlarge an effective light outgoing area when the outgoing light rays are emitted from the display panel, and/or to filter the outgoing light rays emitted from the sub-pixels 112.
The first optical adjustment structure 31 may include only the first optical adjustment region 311, and the first optical adjustment structure 31 may also include the first optical adjustment region 311 and the opening region 312; the second optical conditioning structure 32 may include only the second optical conditioning region 321, and the second optical conditioning structure 32 may also include the second optical conditioning region 321 and the third optical conditioning region 322.
In the actual manufacturing process, a one-step composition process is adopted for each structure in the optical adjustment unit to be directly formed on the encapsulation layer 20, and the composition process specifically includes processes such as organic material coating, mask exposure, development and the like.
For example, the optical adjustment unit includes 3 structures, i.e., a first optical adjustment region 311, a second optical adjustment region 321, and a third optical adjustment region 322, respectively, such that the first optical adjustment region 311 is directly formed on the encapsulation layer 20 by using a first patterning process, the second optical adjustment region 321 is directly formed on the encapsulation layer 20 by using a second patterning process, and the third optical adjustment region 322 is directly formed on the encapsulation layer 20 by using a third patterning process. The first optical adjustment region 311, the second optical adjustment region 321 and the third optical adjustment region 322 are formed by the same process except for the doped materials.
Alternatively, a single patterning process is adopted for each structure in the optical adjustment unit to be directly formed on the substrate, and then the substrate formed with the structures of the first optical adjustment region 311, the second optical adjustment region 321, the third optical adjustment region 322, and the like is attached to the display substrate 10 formed with the encapsulation layer 20, so as to form the optical adjustment layer 30 on the side of the encapsulation layer 20 away from the display substrate 10.
In the embodiment of the invention, the optical adjusting layer is arranged on one side of the packaging layer, which is far away from the display substrate, and the first optical adjusting structure in the optical adjusting layer can perform double refraction on the transmission light rays transmitted by the transparent subunit, so that the effective light transmitting area of the transmission light rays emitted from the display panel is enlarged, when the size of the effective light transmitting area of the transmission light rays is increased, each transmission light ray emitted from the display panel is not easy to diffract, namely the diffraction phenomenon of each transmission light ray is reduced, the coherent superposition of each diffraction light ray is weakened, the ghost phenomenon of an object seen through the display panel is improved, and the visual experience of a user is improved.
EXAMPLE III
The embodiment of the invention also provides a display device which comprises the display panel.
In addition, the display device further includes a driving chip, a TCON (Timer Control Register), and the like.
For specific description of the display panel, reference may be made to the description of the first embodiment and the second embodiment, which is not repeated herein.
In practical applications, the display device is an OLED (Organic Light Emitting Diode) transparent display device, and the OLED transparent display device can be applied to any product or component with a transparent display function, such as a vehicle, an intelligent home, a shop window, and the like, without limitation.
In the embodiment of the invention, the optical adjusting layer is arranged on one side of the packaging layer, which is far away from the display substrate, and the first optical adjusting structure in the optical adjusting layer can perform double refraction on the transmission light rays transmitted by the transparent subunit, so that the effective light transmitting area of the transmission light rays emitted from the display panel is enlarged, when the size of the effective light transmitting area of the transmission light rays is increased, each transmission light ray emitted from the display panel is not easy to diffract, namely the diffraction phenomenon of each transmission light ray is reduced, the coherent superposition of each diffraction light ray is weakened, the ghost phenomenon of an object seen through the display panel is improved, and the visual experience of a user is improved.
While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The display panel, the manufacturing method thereof and the display device provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. A display panel, comprising: the display device comprises a display substrate, an encapsulation layer covering the display substrate and an optical adjusting layer arranged on one side, far away from the display substrate, of the encapsulation layer;
the display substrate comprises a plurality of pixel units, and each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit;
the optical adjusting layer comprises optical adjusting units which correspond to the pixel units one by one, and each optical adjusting unit comprises a first optical adjusting structure corresponding to each transparent subunit;
the first optical adjustment structure is configured to perform birefringence on the transmitted light rays transmitted from the transparent sub-unit so as to enlarge an effective light transmission area when the transmitted light rays exit from the display panel.
2. The display panel of claim 1, wherein the first optical adjustment structure comprises a first optical adjustment region, and wherein the material of the first optical adjustment region is doped with an anisotropic material.
3. The display panel of claim 2, wherein an orthographic projection of the first optical adjustment zone on the display substrate covers an area where the transparent subunit is located.
4. The display panel of claim 2, wherein the first optical adjustment structure further comprises an open area;
the orthographic projection of the first optical adjustment area on the display substrate and the area where the transparent subunit is located form a first overlapping area, and the orthographic projection of the opening area on the display substrate and the area where the transparent subunit is located form a second overlapping area.
5. The display panel according to claim 4, wherein the sizes of the first overlapping areas corresponding to any two first optical adjustment structures in the same optical adjustment unit are not the same.
6. The display panel of claim 1, wherein each of the optical adjustment units further comprises a second optical adjustment structure corresponding to each of the sub-pixels;
the second optical adjusting structure is configured to perform birefringence on the emergent light rays emitted by the sub-pixels so as to enlarge an effective light emitting area when the emergent light rays are emitted from the display panel, and/or filter the emergent light rays emitted by the sub-pixels.
7. The display panel according to claim 6, wherein the second optical adjustment structure comprises a second optical adjustment region, the second optical adjustment region being doped with an anisotropic material and/or a color filter material.
8. The display panel of claim 7, wherein an orthographic projection of the second optical adjustment zone on the display substrate covers an area where the sub-pixel is located.
9. The display panel of claim 7, wherein the second optical adjustment structure further comprises a third optical adjustment region, the material of the third optical adjustment region being doped with a color filter material;
and the orthographic projection of the second optical adjusting area on the display substrate and the area where the sub-pixel is located form a third overlapping area, and the orthographic projection of the third optical adjusting area on the display substrate is located in the area where the sub-pixel is located.
10. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a display substrate; the display substrate comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels and at least one transparent sub-unit;
forming an encapsulation layer covering the display substrate;
forming an optical adjusting layer on one side of the packaging layer far away from the display substrate;
wherein the optical adjustment layer includes optical adjustment units corresponding to the pixel units one by one, each of the optical adjustment units including a first optical adjustment structure corresponding to each of the transparent sub-units; the first optical adjustment structure is configured to perform birefringence on the transmitted light rays transmitted from the transparent sub-unit so as to enlarge an effective light transmission area when the transmitted light rays exit from the display panel.
11. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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