CN113985644A - Display panel and terminal equipment - Google Patents
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- CN113985644A CN113985644A CN202111299096.2A CN202111299096A CN113985644A CN 113985644 A CN113985644 A CN 113985644A CN 202111299096 A CN202111299096 A CN 202111299096A CN 113985644 A CN113985644 A CN 113985644A
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- 239000000758 substrate Substances 0.000 claims abstract description 127
- 230000000007 visual effect Effects 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 49
- 239000004973 liquid crystal related substance Substances 0.000 claims description 20
- 229920002120 photoresistant polymer Polymers 0.000 claims description 13
- 229910000978 Pb alloy Inorganic materials 0.000 claims description 5
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 18
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- 238000000576 coating method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000000565 sealant Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a display panel and terminal equipment; the display panel comprises a first substrate and a second substrate, wherein a visual angle adjusting layer is further arranged on the second substrate and comprises a plurality of microstructures, the microstructures further comprise a first inclination angle adjusting layer and a second inclination angle adjusting layer, and the edge inclination angle of the second inclination angle adjusting layer is smaller than that of the first inclination angle adjusting layer; above-mentioned display panel is through preparing visual angle adjusting layer between first base plate and second base plate, and visual angle adjusting layer includes a plurality of microstructures, thereby make first base plate outgoing take place the diffuse reflection to the partial emergent light of microstructure, make above-mentioned visual angle adjusting layer can possess the effect of transmission and diffuse reflection simultaneously, and then make this display panel homoenergetic present good display effect under low light and highlight environment, further when having increased display panel's backlight's light utilization ratio, further realized display panel's wide visual angle is shown.
Description
Technical Field
The application relates to the field of display, in particular to a display panel and a terminal device.
Background
In the conventional liquid crystal display panel, the transflective liquid crystal display panel has both advantages of the transmissive display mode and the reflective display mode, and thus has good display quality in both a low light environment and a high light environment.
Current transflective liquid crystal display panels require a transflective device between the liquid crystal layer and the backlight, which primarily functions to reflect a portion of the ambient incident light and transmit a portion of the backlight transmission to the viewer. However, the reflection principle of the metal transflective device is specular reflection, which causes the viewing angle of the liquid crystal display panel to be narrowed, thereby reducing the display effect of the liquid crystal display panel.
Therefore, a display panel and a terminal device are needed to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a display panel and a terminal device, which can solve the technical problem that the viewing angle of a transflective liquid crystal display panel in the prior art is narrow.
The embodiment of the application provides a display panel, which comprises a first substrate and a second substrate arranged opposite to the first substrate, wherein one side, close to the first substrate, of the second substrate is also provided with a visual angle adjusting layer, the visual angle adjusting layer comprises a plurality of microstructures, the microstructures further comprise a first inclination angle adjusting layer arranged on the second substrate and a second inclination angle adjusting layer arranged on the second substrate and completely covering the first inclination angle adjusting layer;
wherein an edge tilt angle of the second tilt angle adjustment layer is smaller than an edge tilt angle of the first tilt angle adjustment layer.
Optionally, in some embodiments of the present application, the materials of the first and second tilt angle adjusting layers are both organic photoresists;
wherein the viscosity of the second tilt angle adjusting layer is less than the viscosity of the first tilt angle adjusting layer.
Optionally, in some embodiments of the present application, the viewing angle adjusting layer further includes a metal layer disposed on the microstructure, and the metal layer is made of any one of aluminum, silver, and silver-lead alloy.
Optionally, in some embodiments of the present application, an orthographic projection of the metal layer on the second substrate coincides with an orthographic projection of the microstructure on the second substrate;
wherein the metal layer has a thickness ranging between 10nm and 50 nm.
Optionally, in some embodiments of the present application, the metal layer includes a plurality of openings, and an opening area of each of the openings is equal;
wherein the thickness of the metal layer ranges between 100nm and 500 nm.
Optionally, in some embodiments of the present application, a percentage of a sum of opening areas of the plurality of openings to a total area of pixels of the display panel ranges from 10% to 30%.
Optionally, in some embodiments of the present application, the second tilt angle adjusting layer includes a plurality of protrusions, and a protrusion direction of the protrusions is consistent with a light emitting direction of the display panel.
Optionally, in some embodiments of the present application, the edge of the protrusion has an inclination angle ranging from 4 ° to 16 °, the distance between the two ends of the edge of the protrusion ranges from 4um to 24um, and the height of the protrusion ranges from 0.35um to 3.44 um.
Optionally, in some embodiments of the present application, the display panel further includes a liquid crystal layer disposed between the first substrate and the second substrate, and a pixel electrode is disposed on one side of the first substrate, which is close to the liquid crystal layer;
the metal layer in the visual angle adjusting layer is opposite to the pixel electrode and is multiplexed as a common electrode.
Correspondingly, the embodiment of the application further provides the terminal device, the terminal device comprises a terminal main body and the display panel, and the terminal main body and the display panel are combined into a whole.
The embodiment of the application provides a display panel and terminal equipment; the display panel comprises a first substrate and a second substrate arranged opposite to the first substrate, wherein a visual angle adjusting layer is further arranged on one side, close to the first substrate, of the second substrate, the visual angle adjusting layer comprises a plurality of microstructures, the microstructures further comprise a first inclination angle adjusting layer arranged on the second substrate and a second inclination angle adjusting layer arranged on the second substrate and completely covering the first inclination angle adjusting layer, and the edge inclination angle of the second inclination angle adjusting layer is smaller than that of the first inclination angle adjusting layer; the display panel comprises a first substrate and a second substrate, wherein a visual angle adjusting layer is prepared between the first substrate and the second substrate and comprises a plurality of microstructures, the microstructures further comprise a first inclination angle adjusting layer and a second inclination angle adjusting layer, and the edge inclination angle of the second inclination angle adjusting layer is smaller than that of the first inclination angle adjusting layer, so that the first substrate is emitted to part of emergent light of the microstructures to be subjected to diffuse reflection, the visual angle adjusting layer can have the effects of transmission and diffuse reflection at the same time, the display panel can show good display effects under the environments of weak light and strong light, and wide visual angle display of the display panel is further realized while the light utilization rate of a backlight source of the display panel is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a display panel according to a first embodiment of the present application;
fig. 2A is a side view of a microstructure in a display panel according to a first embodiment of the present disclosure;
fig. 2B is a top view of a microstructure in a display panel according to a first embodiment of the present disclosure;
fig. 3 is a light path diagram of a display panel provided in an embodiment of the present application;
fig. 4 is a schematic cross-sectional structure diagram of a display panel according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The present embodiment of the application is directed to the technical problem of narrow viewing angle of the transflective lcd panel 100 in the prior art, and can improve the technical problem.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1 to 4, an embodiment of the present application provides a display panel 100, including a first substrate 11 and a second substrate 21 disposed opposite to the first substrate 11, wherein a viewing angle adjusting layer 24 is further disposed on one side of the second substrate 21 close to the first substrate 11, the viewing angle adjusting layer 24 includes a plurality of microstructures, and the microstructures further include a first tilt angle adjusting layer 241 disposed on the second substrate 21 and a second tilt angle adjusting layer 242 disposed on the second substrate 21 and completely covering the first tilt angle adjusting layer 241;
wherein an edge inclination angle β of the second inclination adjustment layer 242 is smaller than an edge inclination angle α of the first inclination adjustment layer 241.
The display panel 100 provided by the embodiment of the application is through first base plate 11 with visual angle adjusting layer 24 is prepared between second base plate 21, just visual angle adjusting layer 24 includes a plurality of microstructures, the microstructures still include first inclination adjusting layer 241 and second inclination adjusting layer 242, the edge inclination beta of second inclination adjusting layer 242 is less than the edge inclination alpha of first inclination adjusting layer 241, thereby make first base plate 11 emergent extremely diffuse reflection takes place for the partial emergent light of microstructure for above-mentioned visual angle adjusting layer 24 can possess transmission and diffuse reflection's effect simultaneously, and then makes this display panel 100 homoenergetic under low light and highlight environment present good display effect, and further when having increased the light utilization ratio of display panel 100's backlight, has further realized display panel 100's wide visual angle is shown.
The technical solution of the present application will now be described with reference to specific embodiments.
Example one
Fig. 1 is a schematic cross-sectional view of a display panel 100 according to a first embodiment of the present disclosure; the display panel 100 provided in the embodiment of the present application includes a first substrate 11, a second substrate 21 and a liquid crystal layer 31, the first substrate 11 and the second substrate 21 are arranged opposite to each other, the liquid crystal layer 31 is arranged between the first substrate 11 and the second substrate 21, and the liquid crystal layer 31 includes a plurality of liquid crystal molecules.
In this embodiment, the display region of the first substrate 11 includes a plurality of sub-pixel regions, and a plurality of switching tubes (e.g., thin film transistors) arranged in an array are disposed on the first substrate 11, wherein a pixel electrode of each switching tube is disposed in a corresponding sub-pixel region. A flat layer and a first alignment layer disposed on the flat layer are further disposed on the first substrate 11, wherein the flat layer completely covers all the switching tubes and all the sub-pixel regions thereunder.
In the embodiment of the present application, a viewing angle adjusting layer 24 is further disposed on one side of the second substrate 21 close to the first substrate 11, the viewing angle adjusting layer 24 includes a plurality of microstructures, and the microstructures further include a first tilt angle adjusting layer 241 disposed on the second substrate 21 and a second tilt angle adjusting layer 242 disposed on the second substrate 21 and completely covering the first tilt angle adjusting layer 241;
wherein an edge inclination angle β of the second inclination adjustment layer 242 is smaller than an edge inclination angle α of the first inclination adjustment layer 241.
Further, a black matrix 23 and a color filter layer 22 are provided between the second substrate 21 and the viewing angle adjusting layer 24. Wherein the black matrix 23 is formed on the second substrate 21, and the black matrix 23 may be made of black resin or metal chrome. The switching tube formed on the first substrate 11 is opposite to the black matrix 23. The color filter layer 22 is formed on the second substrate 21 and covers the black matrix 23, wherein the color filter layer 22 includes a red color resist layer 221, a green color resist layer 222, and a blue color resist layer 223 formed in this order.
In the embodiment of the present application, the materials of the first and second tilt angle adjusting layers 241 and 242 are all organic photoresists; wherein the viscosity of the second tilt angle adjusting layer 242 is less than the viscosity of the first tilt angle adjusting layer 241. This is designed to make the flatness of the organic photoresist forming the second inclination angle adjusting layer 242 stronger than that of the organic photoresist forming the first inclination angle adjusting layer 241 so that the edge inclination angle β of the second inclination angle adjusting layer 242 is smaller than the edge inclination angle α of the first inclination angle adjusting layer 241.
In the embodiment of the present application, the second tilt angle adjusting layer 242 includes a plurality of protrusions, and the protruding direction of the protrusions is consistent with the light emitting direction of the display panel 100. The protrusions can enable the microstructure to have a diffuse reflection function. Here, the diffuse reflection is a phenomenon in which light projected on a rough surface is reflected in various directions. When a parallel incident ray strikes a rough surface, the surface reflects the ray in all directions, so that although the incident rays are parallel to each other, the reflected ray is randomly reflected in different directions due to the non-uniform normal directions of each point, and the reflection is called as "diffuse reflection" or "diffusion", and the diffuse reflection phenomenon can change the emergent angle of the reflected ray, so that the reflected ray is almost uniform at any angle, and the aim is to enable an observer at each position to see the ray.
Further, in the present embodiment, the edge inclination angle β of the protrusion ranges from 4 ° to 16 °; if the edge inclination angle β of the protrusion is greater than or equal to 16 °, the number of the protrusions formed in the second tilt angle adjusting layer 242 is small, and the diffuse reflection function of the second tilt angle adjusting layer 242 is affected; if the edge inclination angle β of the protrusion is less than or equal to 4 °, the flatness of the protrusion formed in the second tilt angle adjusting layer 242 may be high, and the diffuse reflection function of the second tilt angle adjusting layer 242 may also be affected. Similarly, the range of the interval L at both ends of the convex edge is between 4um to 24um, and the range of the convex height H is between 0.35um to 3.44 um.
In the embodiment of the present application, the viewing angle adjusting layer 24 further includes a metal layer 243 disposed on the microstructure, and the metal layer 243 is made of any one of aluminum, silver, and silver-lead alloy; the metal layer 243 includes a plurality of openings 2431, and each of the openings 2431 has an equal area;
wherein the thickness of the metal layer 243 ranges from 100nm to 500 nm.
Through experiments, the person skilled in the art finds that the transmittance of the silver-lead alloy gradually decreases with the increase of the film thickness, and the reflectance of the silver-lead alloy can be adjusted by adjusting the film thickness to adjust the transmittance of the metal film.
Therefore, when the thickness of the metal layer 243 is in a range from 100nm to 500nm, the transmittance of the metal layer 243 is close to 0, and the reflectance of the metal layer 243 is close to one hundred percent. At this time, the metal layer 243 serves as a reflective layer, a first part of the outgoing light of the display panel 100 is reflected to the first substrate 11 through the metal layer 243, and a second part of the outgoing light of the display panel 100 passes through the opening 2431, wherein a part of the outgoing light passes through the microstructure and is emitted to the light-emitting side of the display panel 100, and the other part of the outgoing light is diffusely reflected to the first substrate 11 through the microstructure.
Further, in the embodiment of the present application, a percentage of a sum of opening areas of the plurality of openings 2431 to a total area of pixels of the display panel 100 ranges from 10% to 30%. If the sum of the opening areas of the plurality of openings 2431 accounts for less than or equal to 10% of the total area of the pixels of the display panel 100, the ratio of the emergent light of the display panel 100 reflected after passing through the viewing angle adjusting layer 24 is much greater than the ratio of the emergent light transmitted, so that the brightness of the display panel 100 is reduced; if the sum of the opening areas of the plurality of openings 2431 accounts for 30% or more of the total area of the pixels of the display panel 100, the ratio of ambient light reflected by the viewing angle adjusting layer 24 is too small, so that the display effect of the display panel 100 in a strong light environment is poor.
In the embodiment of the present application, the display panel 100 further includes a common electrode disposed on the viewing angle adjusting layer 24 and close to one side of the first substrate 11, and the common electrode is disposed opposite to the pixel electrode; wherein the metal layer 243 is multiplexed as the common electrode.
Further, a second alignment layer is disposed on a side of the metal layer 243 close to the first substrate 11. The first alignment layer and the second alignment layer are both used for aligning liquid crystal molecules in the liquid crystal layer 31, and giving a proper pretilt angle to the liquid crystal molecules.
Fig. 2A is a side view of a microstructure in a display panel 100 according to a first embodiment of the present application; fig. 2B is a top view of a microstructure in the display panel 100 according to the first embodiment of the present disclosure; wherein the structure of the second tilt angle adjusting layer 242 on the second substrate 21 is a continuous structure, and meanwhile, the optimal angle of the edge tilt angle of the second tilt angle adjusting layer 242 is 10 °; this arrangement ensures that the plurality of protrusions of the second tilt angle adjusting layer 242 are closely arranged, so that the second tilt angle adjusting layer 242 has the best diffuse reflection effect.
Further, the arrangement of the plurality of protrusions in the second tilt angle adjusting layer 242 in the top view direction of the display panel 100 includes any one of random arrangement, mosaic arrangement, and staggered arrangement.
In an embodiment of the present application, a method for manufacturing a display panel 100 according to a first embodiment of the present application includes:
first, the first substrate 11 is prepared, a display area of the first substrate 11 includes a plurality of sub-pixel areas, and a plurality of switching tubes (e.g., thin film transistors) arranged in an array are disposed on the first substrate 11, wherein a pixel electrode of each switching tube is disposed in a corresponding sub-pixel area. A flat layer and a first alignment layer disposed on the flat layer are further disposed on the first substrate 11, wherein the flat layer completely covers all the switching tubes and all the sub-pixel regions thereunder.
Further, the first substrate 11 may be a flexible substrate or a common glass substrate.
Then, the second substrate 21 is prepared, and the second substrate 21 is a metal diffuse reflection substrate. First, a first organic photoresist is coated on a substrate to form a first protrusion structure to form a first tilt angle adjusting layer 241, and the first tilt angle adjusting layer 241 is obtained by a photolithography process. Then, a second organic photoresist is coated on the first inclination angle adjusting layer 241 for a second time, and since the viscosity of the second organic photoresist is lower than that of the first organic photoresist, the flatness of the second organic photoresist is better, and the second inclination angle adjusting layer 242 obtained by preparation can further reduce the edge inclination angle of the microstructure by means of the second organic photoresist in the leveling process, so that the second inclination angle adjusting layer 242 is arranged on the second substrate 21 and completely covers the first inclination angle adjusting layer 241, and the edge inclination angle β of the second inclination angle adjusting layer 242 is smaller than the edge inclination angle α of the first inclination angle adjusting layer 241. Meanwhile, the second tilt angle adjusting layer 242 includes a plurality of protrusions, and the protruding direction of the protrusions is consistent with the light emitting direction of the display panel 100.
The second tilt angle adjusting layer 242 prepared by the second photoresist coating can have a lower edge tilt angle, thereby having a good diffuse reflection effect.
Then, the metal layer 243 is evaporated on the surface of the second tilt angle adjusting layer 242 away from the second substrate 21 by a physical vapor deposition method, and the metal layer 243 is etched and opened by a yellow light process, where an opening region of the metal layer 243 is a transmission region of the display panel 100, and a non-opening region of the metal layer 243 is a reflection region of the display panel 100. The first tilt angle adjusting layer 241 and the second tilt angle adjusting layer 242 constitute the microstructure, and the microstructure and the metal layer 243 constitute the viewing angle adjusting layer 24.
Then, a black matrix 23 and a color filter layer 22 are provided between the second substrate 21 and the viewing angle adjusting layer 24. Wherein the black matrix 23 is formed on the second substrate 21, and the black matrix 23 may be made of black resin or metal chrome. The switching tube formed on the first substrate 11 is opposite to the black matrix 23. The color filter layer 22 is formed on the second substrate 21 and covers the black matrix 23, wherein the color filter layer 22 includes a red color resist layer 221, a green color resist layer 222, and a blue color resist layer 223 formed in this order.
Then preparing the first alignment layer on the first substrate 11 and the second alignment layer on the second substrate 21; meanwhile, the first substrate 11 and the second substrate 21 are aligned, and liquid crystal and sealant are dropped between the first substrate 11 and the second substrate 21 to form the liquid crystal layer 31.
Finally, the first substrate 11 and the second substrate 21 are bonded to each other, thereby obtaining the display panel 100.
In the above embodiments of the present application, the built-in microstructure with a low edge angle is difficult to be formed in a photolithography process (the edge angle of the built-in microstructure prepared by the photolithography process is usually greater than 30 °), so that the built-in microstructure with a low edge angle can hardly be formed in one step. Therefore, the built-in microstructure with a low angle edge inclination angle prepared by the secondary photoresist coating method provided by the embodiment of the application can better meet the diffuse reflection effect of the microstructure.
As shown in fig. 3, a light path diagram of the display panel 100 according to the embodiment of the present application is provided; in the display panel 100 provided in the embodiment of the present application, the viewing angle adjusting layer 24 is a semi-transparent and semi-reflective film layer, the semi-transparent and semi-reflective film layer can transmit and reflect light, and the ratio of incident light transmitted through the semi-transparent and semi-reflective film layer and the ratio of incident light reflected through the semi-transparent and semi-reflective film layer can be adjusted according to actual optical requirements.
Specifically, the plurality of microstructures in the viewing angle adjusting layer 24 can change the reflection direction of the backlight emitted from the backlight module at the viewing angle adjusting layer 24. In detail, the first backlight L1 emitted by the backlight module is reflected by the metal layer 243 to form a first reflected light L1 ', and the second backlight L2 emitted by the backlight module is diffused by the opening 2431 of the metal layer 243 to form a second reflected light L2', and the other part of the second reflected light is emitted to the light-emitting side of the display panel 100 after passing through the microstructure; meanwhile, when the external ambient light is reflected to the viewing angle adjusting layer 24 through the second substrate 21, a portion of the ambient light L3 is incident to the first substrate 11 through the microstructure, and another portion of the ambient light L4 is reflected to the light emitting side of the display panel 100 after passing through the metal layer 243 to form a fourth reflected light L4'. Finally, the first reflected light L1 'and the second reflected light L2' are reflected for multiple times and finally pass through the microstructure to exit to the light exit side of the display panel 100.
Further, the viewing angle adjusting layer 24 can reflect a portion of external ambient light, which is beneficial for the display panel 100 to maintain a good display effect in a strong light environment; and after part of backlight emitted by the backlight module passes through the visual angle adjusting layer 24, the diffuse reflection phenomenon is generated, so that the light utilization rate of the backlight module can be further increased.
The technical problem that the viewing angle of the transflective lcd panel 100 in the prior art is narrow is solved; the display panel 100 provided in the embodiment of the present application includes a first substrate 11 and a second substrate 21 disposed opposite to the first substrate 11, wherein a viewing angle adjusting layer 24 is further disposed on one side of the second substrate 21 close to the first substrate 11, the viewing angle adjusting layer 24 includes a plurality of microstructures, the microstructures further include a first tilt angle adjusting layer 241 disposed on the second substrate 21 and a second tilt angle adjusting layer 242 disposed on the second substrate 21 and completely covering the first tilt angle adjusting layer 241, and an edge tilt angle β of the second tilt angle adjusting layer 242 is smaller than an edge tilt angle α of the first tilt angle adjusting layer 241; the display panel 100 is characterized in that a viewing angle adjusting layer 24 is prepared between the first substrate 11 and the second substrate 21, the viewing angle adjusting layer 24 comprises a plurality of microstructures, each microstructure further comprises a first inclination angle adjusting layer 241 and a second inclination angle adjusting layer 242, and an edge inclination angle β of the second inclination angle adjusting layer 242 is smaller than an edge inclination angle α of the first inclination angle adjusting layer 241, so that part of emergent light emitted from the first substrate 11 to the microstructures is subjected to diffuse reflection, the viewing angle adjusting layer 24 can have the effects of transmission and diffuse reflection at the same time, the display panel 100 can show good display effects in weak light and strong light environments, the light utilization rate of a backlight source of the display panel 100 is further increased, and wide-viewing angle display of the display panel 100 is further realized.
Example two
Fig. 4 is a schematic cross-sectional view of a display panel 100 according to a second embodiment of the present disclosure; the structure of the display panel 100 in the second embodiment of the present application is the same as or similar to the structure of the display panel 100 in the first embodiment of the present application, except that an orthogonal projection of the metal layer 243 on the second substrate 21 coincides with an orthogonal projection of the microstructure on the second substrate 21;
wherein the thickness of the metal layer 243 ranges from 10nm to 50 nm.
Specifically, when the thickness of the metal layer 243 is in the range of 10nm to 50nm, the reflectivity and the transmittance of the metal layer 243 are both not 0, and when incident light irradiates the metal layer 243, a part of the incident light can pass through the metal layer 243, and the other part of the incident light is reflected by the reflective layer.
Further, when the thickness of the metal layer 243 is less than or equal to 10nm, the reflectivity of the metal layer 243 is too low, and when the thickness of the metal layer 243 is greater than or equal to 50nm, the transmittance of the metal layer 243 is too low.
The technical problem that the viewing angle of the transflective lcd panel 100 in the prior art is narrow is solved; the display panel 100 provided in the embodiment of the present application includes a first substrate 11 and a second substrate 21 disposed opposite to the first substrate 11, wherein a viewing angle adjusting layer 24 is further disposed on one side of the second substrate 21 close to the first substrate 11, the viewing angle adjusting layer 24 includes a plurality of microstructures, the microstructures further include a first tilt angle adjusting layer 241 disposed on the second substrate 21 and a second tilt angle adjusting layer 242 disposed on the second substrate 21 and completely covering the first tilt angle adjusting layer 241, and an edge tilt angle β of the second tilt angle adjusting layer 242 is smaller than an edge tilt angle α of the first tilt angle adjusting layer 241; the display panel 100 is characterized in that a viewing angle adjusting layer 24 is prepared between the first substrate 11 and the second substrate 21, the viewing angle adjusting layer 24 comprises a plurality of microstructures, each microstructure further comprises a first inclination angle adjusting layer 241 and a second inclination angle adjusting layer 242, and an edge inclination angle β of the second inclination angle adjusting layer 242 is smaller than an edge inclination angle α of the first inclination angle adjusting layer 241, so that part of emergent light emitted from the first substrate 11 to the microstructures is subjected to diffuse reflection, the viewing angle adjusting layer 24 can have the effects of transmission and diffuse reflection at the same time, the display panel 100 can show good display effects in weak light and strong light environments, the light utilization rate of a backlight source of the display panel 100 is further increased, and wide-viewing angle display of the display panel 100 is further realized.
In addition, compared with the display panel 100 provided in the first embodiment of the present application, in the display panel 100 provided in the second embodiment of the present application, since the film thickness of the metal layer 243 in the viewing angle adjusting layer 24 is required to be relatively low and no opening process is required, one photomask process can be reduced, so that the process cost of the display panel 100 is relatively low.
Correspondingly, the embodiment of the present application further provides a terminal device, where the terminal device includes a terminal main body and the display panel 100 as described in any one of the above, and the terminal main body and the display panel 100 are combined into a whole. The terminal equipment has wide application space in vehicle-mounted, mobile phone, tablet, computer, outdoor advertising screen and television products.
The embodiment of the application provides a display panel 100 and a terminal device; the display panel 100 includes a first substrate 11 and a second substrate 21 disposed opposite to the first substrate 11, wherein a viewing angle adjusting layer 24 is further disposed on one side of the second substrate 21 close to the first substrate 11, the viewing angle adjusting layer 24 includes a plurality of microstructures, the microstructures further include a first tilt angle adjusting layer 241 disposed on the second substrate 21 and a second tilt angle adjusting layer 242 disposed on the second substrate 21 and completely covering the first tilt angle adjusting layer 241, and an edge tilt angle α of the second tilt angle adjusting layer 242 is smaller than an edge tilt angle α of the first tilt angle adjusting layer 241; the display panel 100 is characterized in that a viewing angle adjusting layer 24 is prepared between the first substrate 11 and the second substrate 21, the viewing angle adjusting layer 24 comprises a plurality of microstructures, each microstructure further comprises a first inclination angle adjusting layer 241 and a second inclination angle adjusting layer 242, and an edge inclination angle β of the second inclination angle adjusting layer 242 is smaller than an edge inclination angle α of the first inclination angle adjusting layer 241, so that part of emergent light emitted from the first substrate 11 to the microstructures is subjected to diffuse reflection, the viewing angle adjusting layer 24 can have the effects of transmission and diffuse reflection at the same time, the display panel 100 can show good display effects in weak light and strong light environments, the light utilization rate of a backlight source of the display panel 100 is further increased, and wide-viewing angle display of the display panel 100 is further realized.
The display panel 100 and the terminal device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the embodiments above is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, 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 application.
Claims (10)
1. A display panel is characterized by comprising a first substrate and a second substrate arranged opposite to the first substrate, wherein a visual angle adjusting layer is further arranged on one side, close to the first substrate, of the second substrate, the visual angle adjusting layer comprises a plurality of microstructures, the microstructures further comprise a first inclination angle adjusting layer arranged on the second substrate and a second inclination angle adjusting layer arranged on the second substrate and completely covering the first inclination angle adjusting layer;
wherein an edge tilt angle of the second tilt angle adjustment layer is smaller than an edge tilt angle of the first tilt angle adjustment layer.
2. The display panel according to claim 1, wherein the first and second tilt angle adjusting layers are made of organic photoresist;
wherein the viscosity of the second tilt angle adjusting layer is less than the viscosity of the first tilt angle adjusting layer.
3. The display panel according to claim 1, wherein the viewing angle adjusting layer further comprises a metal layer disposed on the microstructure, and the metal layer is made of any one of aluminum, silver, and silver-lead alloy.
4. The display panel according to claim 3, wherein an orthographic projection of the metal layer on the second substrate coincides with an orthographic projection of the microstructure on the second substrate;
wherein the metal layer has a thickness ranging between 10nm and 50 nm.
5. The display panel according to claim 3, wherein the metal layer comprises a plurality of openings, and an opening area of each of the openings is equal;
wherein the thickness of the metal layer ranges between 100nm and 500 nm.
6. The display panel according to claim 5, wherein the sum of the opening areas of the plurality of openings is in a range of 10% to 30% of the total area of the pixels of the display panel.
7. The display panel according to claim 1, wherein the second tilt angle adjusting layer comprises a plurality of protrusions, and a protrusion direction of the protrusions is consistent with a light emitting direction of the display panel.
8. The display panel of claim 7, wherein the edge of the protrusion has an inclination angle ranging from 4 ° to 16 °, the edge of the protrusion has a distance ranging from 4um to 24um, and the height of the protrusion ranges from 0.35um to 3.44 um.
9. The display panel according to claim 3, further comprising a liquid crystal layer disposed between the first substrate and the second substrate, wherein a pixel electrode is disposed on the first substrate on a side close to the liquid crystal layer;
the metal layer in the visual angle adjusting layer is opposite to the pixel electrode and is multiplexed as a common electrode.
10. A terminal device characterized by comprising a terminal body and the display panel according to any one of claims 1 to 9, the terminal body being integrated with the display panel.
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| CN202111299096.2A CN113985644B (en) | 2021-11-04 | 2021-11-04 | Display panel and terminal equipment |
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| TW201903485A (en) * | 2017-06-06 | 2019-01-16 | 凌巨科技股份有限公司 | Method of designing reflective layer and display apparatus thereof |
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| US6266111B1 (en) * | 1998-03-10 | 2001-07-24 | Sony Corporation | Diffuse reflection plate, manufacturing method thereof, and reflection-type display device |
| US20020118326A1 (en) * | 2001-02-14 | 2002-08-29 | Michiaki Sakamoto | Active-matrix addressed reflective LCD and method of fabricating the same |
| CN1639592A (en) * | 2001-10-04 | 2005-07-13 | 皇家飞利浦电子股份有限公司 | Optical reflector and display device using it |
| TW201903485A (en) * | 2017-06-06 | 2019-01-16 | 凌巨科技股份有限公司 | Method of designing reflective layer and display apparatus thereof |
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