CN114637143A - Display device and electronic apparatus - Google Patents
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- CN114637143A CN114637143A CN202210418028.1A CN202210418028A CN114637143A CN 114637143 A CN114637143 A CN 114637143A CN 202210418028 A CN202210418028 A CN 202210418028A CN 114637143 A CN114637143 A CN 114637143A
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- G—PHYSICS
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- 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
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display device and an electronic device, the display device includes: the light-emitting device comprises a substrate, a light-emitting component and a light-emitting component, wherein the substrate is provided with a first surface, a plurality of light-emitting components which are arranged in an array are arranged on the first surface, and the light-emitting components emit light along a direction vertical to the first surface; the photochromic layer is arranged on the light emitting side of the light emitting element and has a light transmitting state and a light shading state, and part of the photochromic layer irradiated by the light emitted by the light emitting element is changed from the light shading state to the light transmitting state so as to enable the light of the light emitting element to be emitted. At the position with low emergent light intensity, the photochromic layer is in a shading state, namely the photochromic layer is black and opaque, so that the light of the light-emitting element in a high-brightness state below the photochromic layer is prevented from emitting, the emission of dark sub-pixel light is reduced, and halation is avoided. The light emitting with small light intensity at the edge of the light emitting element can be shielded by arranging the photochromic layer in the embodiment, so that the generation of halation is avoided.
Description
Technical Field
The invention belongs to the technical field of electronic products, and particularly relates to a display device and electronic equipment.
Background
LCD (Liquid Crystal Display) is applied to an electronic terminal, and because of its characteristics, the electronic terminal having many advantages such as thin body, power saving, and no radiation can be manufactured. Most of the existing liquid crystal display devices in the market are backlight liquid crystal displays, which include a liquid crystal module and a backlight module. Since the lcd panel does not emit light, the backlight module is one of the key components of the lcd device because the backlight module needs to provide a light source to normally display images.
The backlight module is divided into a side-in type backlight module and a direct type backlight module according to different incident positions of the light source. The direct-type backlight module is configured to dispose a Light source, such as an LED (Light Emitting Diode) lamp, behind the liquid crystal panel to directly form a surface Light source for the liquid crystal panel. The display device is limited by the structure of the existing liquid crystal display device, and the halo problem can occur during display, so that the experience effect of a user is influenced.
Therefore, a new display device and an electronic apparatus are needed.
Disclosure of Invention
The embodiment of the invention provides a display device and electronic equipment, wherein the photochromic layer is arranged to shield the light emitted from the edge of the light-emitting element with smaller light intensity, so that the generation of halation is avoided.
In a first aspect, an embodiment of the present invention provides a display device, including: the light-emitting device comprises a substrate, a light-emitting module and a light-emitting module, wherein the substrate is provided with a first surface, a plurality of light-emitting elements which are arranged in an array are arranged on the first surface, and the light-emitting elements emit light along a direction vertical to the first surface; the photochromic layer is located light emitting element's light-emitting side, the photochromic layer has printing opacity state and shading state, receives the part that light emitting element light-emitting was shone the photochromic layer by shading state transform is the printing opacity state, so that light emitting element's light outgoing.
In a second aspect, an embodiment of the present invention provides an electronic device, including: the display device of any of the above embodiments.
Compared with the related art, the display device provided by the embodiment of the invention comprises the substrate, the light emitting element and the photochromic layer, wherein the photochromic layer is arranged on the light emitting side of the light emitting element, and part of the photochromic layer irradiated by the light emitted by the light emitting element with higher light intensity is changed from the light shielding state to the light transmitting state, namely, the light emitted by the light emitting element can be normally emitted from the photochromic layer in the light transmitting state, and the photochromic layer is in the light shielding state at the position with low light intensity, namely, the photochromic layer is black and light-tight, so that the light emitted by the light emitting element in the lower highlight state (for example, corresponding to the display gray scale of 255) is prevented, the emission of dark sub-pixel light is reduced, and the occurrence of halo is avoided. The light emitting with small light intensity at the edge of the light emitting element can be shielded by arranging the photochromic layer in the embodiment, so that the generation of halation is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, 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 film structure diagram of a display device according to an embodiment of the present invention;
fig. 2 is a film structure diagram of a display device according to another embodiment of the present invention;
fig. 3 is a film layer structure diagram of a display device according to still another embodiment of the present invention;
FIG. 4 is a schematic top view of a photochromic layer provided in accordance with an embodiment of the present invention;
FIG. 5 is a diagram illustrating a structure of a film layer of a display device according to another embodiment of the present invention;
fig. 6 is a film layer structure diagram of a display device according to still another embodiment of the present invention;
fig. 7 is a film layer structure diagram of a display device according to still another embodiment of the present invention;
fig. 8 is a film structure diagram of a display device according to still another embodiment of the present invention.
Detailed Description
Features of various aspects and exemplary embodiments of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is 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 … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present invention, the following description is made in detail with reference to fig. 1 to 8 for a display device and an electronic apparatus according to an embodiment of the present invention.
Referring to fig. 1, fig. 1 is a film structure diagram of a display device according to an embodiment of the present invention, and the embodiment of the present invention provides a display device including: the light-emitting device comprises a substrate 1, wherein the substrate 1 is provided with a first surface P1, a plurality of light-emitting elements 2 arranged in an array are arranged on the first surface P1, and the light-emitting elements 2 emit light in a direction perpendicular to the first surface P1; the photochromic layer 3 is arranged on the light emitting side of the light emitting element 2, the photochromic layer 3 has a light transmitting state and a light shading state, and a part of the photochromic layer 3 irradiated by the light emitted from the light emitting element 2 is changed from the light shading state to the light transmitting state so as to enable the light of the light emitting element 2 to be emitted.
The display device provided by the embodiment of the invention comprises a substrate 1, a light-emitting element 2 and a photochromic layer 3, wherein the photochromic layer 3 is arranged on the light-emitting side of the light-emitting element 2, and part of the photochromic layer 3 irradiated by light emitted from the light-emitting element 2 with larger light intensity is changed from a light-shielding state to a light-transmitting state, namely, the light emitted from the light-emitting element 2 can be normally emitted from the photochromic layer 3 in the light-transmitting state, and the photochromic layer 3 is in the light-shielding state at a position with small light intensity, namely the photochromic layer 3 is black and light-tight, so that the light emitted from the other light-emitting element 2 in a high-brightness state (corresponding to a display gray scale of 255) below is prevented, the emission of dark sub-pixel light is reduced, and halo is avoided. In the present embodiment, the photochromic layer 3 is provided to block the light emitted from the edge of the light emitting element 2 with a small light intensity, so as to avoid the occurrence of halo.
It should be noted that, photochromic refers to a compound whose molecular structure changes under the action of light with a certain wavelength and intensity, so as to cause a corresponding change of its absorption peak of light, i.e. color, and the change is generally reversible.
For example, when the gray scale is displayed as 0 gray scale, the light transmittance of the photochromic layer 3 is 0, that is, the photochromic layer 3 is opaque, and when the gray scale is displayed as 255 gray scale, the light transmittance of the photochromic layer 3 is 95%, and the light transmittance reaches the maximum value, of course, the light transmittance range of the photochromic layer 3 is not limited to the above example, and the actual light transmittance range is determined by the material used for the photochromic layer 3.
The photochromic layer 3 may be made of two-dimensional nano material having a light-induced transparent property, such as transition metal sulfide and black phosphorus. For example, when black phosphor is used as the light-sensitive transparent layer, the light-sensitive transparent layer itself is gray black and has a characteristic that the transparency is better as the incident light is stronger.
It should be noted that the Light Emitting elements 2 are arranged in an array on the first surface P1 of the substrate 1, and the Light Emitting elements 2 emit Light in a direction perpendicular to the first surface P1, that is, the Light Emitting elements 2 in the embodiment of the present invention are direct Light Emitting elements 2, and the Light Emitting elements 2 may be Micro LEDs (Micro Light Emitting diodes) or Mini-LEDs (small Light Emitting diodes). The Micro LED and the Mini-LED have the advantages of small size, high luminous efficiency, low energy consumption and the like, the size of the Micro LED is smaller than 50 mu m, the size of the Mini-LED is smaller than 100 mu m, and numbers and patterns can be clearly displayed on a small display panel.
The substrate 1 may be formed of any suitable insulating material having flexibility. For example, the flexible substrate 1 may be formed of a polymer material such as PI (polyimide), PC (polycarbonate), PES (polyethersulfone), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PAR (polyarylate), or FRP (glass fiber reinforced plastic). The substrate 1 may be transparent, translucent or opaque. Of course, the substrate 1 may also be a glass substrate 1, in which case the display panel is a rigid display panel that cannot be freely bent.
It is understood that the light-transmitting state and the light-blocking state of the photochromic layer 3 specifically mean that the light transmittance of the photochromic layer 3 can be changed from a light-blocking, light-blocking state to a light-transmitting state after being irradiated by the light emitted from the light-emitting element 2.
Referring to fig. 2, fig. 2 is a film structure diagram of a display device according to another embodiment of the invention; in order to further control the light output of the light emitting elements 2 to the photochromic layer 3, in some alternative embodiments the display panel further comprises a light control layer 4, the light control layer 4 being provided between the photochromic layer 3 and the light emitting elements 2.
It can be understood that photochromic layer 3 needs the light-emitting of light emitting component 2 to shine and can convert the form, in this embodiment, can control whether light emitting component 2's light-emitting can be emergent through light control layer 4, light transmittance of light control layer 4 can be controlled through the size of voltage or electric current, and then control whether light emitting component 2's light-emitting ability shines to photochromic layer 3 through light control layer 4 on, the light-emitting of the accurate control photochromic layer 3 of being convenient for corresponds the position.
In the related art, when the light emitting device 2 is used as the backlight of the display panel, the switch and brightness adjustment of the backlight area can be controlled in real time by using the partition dimming technology, so as to achieve precise dynamic light control. For example, when the light emitting element 2 is a Mini-LED, the light emitting area of a single segment of the Mini-LED is about 4.5mm by 4.5mm, the RGB pixel units are about 0.095mm by 0.095mm, and the Mini-LED of a single segment can provide light sources for 48 by 48 pixels, and when there are pixel units with corresponding display gray scales of 0 level and 255 levels in the single segment corresponding to the Mini-LED in a high-brightness state, limited by the light shielding effect of the liquid crystal layer of the existing display panel, the light emitted from the Mini-LED in the high-brightness state will partially pass through the liquid crystal layer corresponding to the pixel unit in the 0-level dark state, i.e. the pixel unit with corresponding display gray scale of 0 level in the single segment corresponding to the Mini-LED in the high-brightness state will generate light with smaller intensity, and further the pixel unit with corresponding display gray scale of 0 level dark state in the single segment corresponding to the Mini-LED in the high-brightness state will generate light intensity, which is smaller than the pixel units in the peripheral Mini-LED in the non-zone, and finally, generating halation in the pixel unit corresponding to the dark state with 0-order display gray scale in the single partition corresponding to the Mini-LED in the high-brightness state.
In this embodiment, by providing the photochromic layer 3, when the light emitted from the pixel unit corresponding to the 0-order dark state corresponding to the display gray scale in the single sub-area corresponding to the Mini-LED in the high-brightness state is irradiated to the photochromic layer 3, the photochromic layer 3 is in the light-shielding state, i.e. the photochromic layer 3 is black and opaque, so that the light emitted from the pixel unit corresponding to the 0-order dark state in the low-intensity state can be shielded by the photochromic layer 3, thereby preventing the light from being visible and generating halo.
Referring to fig. 3, fig. 3 is a film structure diagram of a display device according to another embodiment of the invention; optionally, the light control layer 4 includes a liquid crystal layer L, it can be understood that the liquid crystal layer L includes liquid crystal molecules arranged in sequence, the liquid crystal molecules deflect under an electric field formed by the common electrode 65 and the pixel electrode 66, the deflection angle may affect the light intensity of the light emitting element 2 at the liquid crystal layer L, and further affect the display picture of the display panel, therefore, when the display panel displays different pictures, the light transmittance of different positions of the liquid crystal layer L is different, because the photochromic layer 3 is disposed on the light emitting side of the liquid crystal layer L, the light transmittance state and the light shading state of each part of the photochromic layer 3 may also change synchronously with the light and dark of the light emitted from the liquid crystal layer L.
The brightness of the pixel unit corresponds to the brightness change of the light emitted by the liquid crystal molecules of the liquid crystal layer L, and the light transmission state and the light shading state of each part of the photochromic layer 3 can also synchronously change along with the brightness change of the light emitted by the liquid crystal layer L, so that the brightness change of the pixel unit corresponding to the light emitted by the photochromic layer 3 can be realized, the halo problem caused by the fact that the pixel unit corresponding to the dark state with 0-order display gray scale in the single partition corresponding to the Mini-LED in the high brightness state is brighter than the pixel unit in the peripheral non-luminous Mini-LED single partition can be solved, and the display effect of the display panel is improved.
In order to avoid the influence of the photochromic layer 3 on the normal display of the display panel, in some alternative embodiments, the light transmittance of the photochromic layer 3 is in a proportional relationship with the display gray scale.
It should be noted that the normal display gray scales include 0 gray scale to 255 gray scale, and the light transmittance of the liquid crystal layer L can be adjusted by the deflection of the liquid crystal molecules of the liquid crystal layer L, so as to adjust the display gray scale. The larger the display gray scale is, the larger the transmittance of the corresponding liquid crystal molecules is, the higher the light intensity is irradiated to the corresponding position of the photochromic layer 3 is, the larger the transmittance of the photochromic layer 3 is, that is, the photochromic layer 3 has the characteristics that the intensity of the incident light is stronger, and the transparency is better.
For example, when the gray scale is displayed as 0 gray scale, the light transmittance of the photochromic layer 3 is 0, that is, the photochromic layer 3 is opaque, and when the gray scale is displayed as 0 gray scale, the light transmittance of the photochromic layer 3 is 95%, and the light transmittance reaches the maximum value, of course, the light transmittance range of the photochromic layer 3 is not limited to the above example, and the actual light transmittance range is determined by the material used for the photochromic layer 3.
Referring to fig. 4, fig. 4 is a schematic top view of a photochromic layer 3 according to an embodiment of the invention; in some alternative embodiments, when the display gray scale is equal to the zero gray scale, the photochromic layer 3 is in the light-shielding state; when the display gray scale is larger than the zero gray scale, the light emitted from the light emitting element 2 passes through the liquid crystal layer L to irradiate the photochromic layer 3, and the photochromic layer 3 is changed from the light-shielding state to the light-transmitting state.
It is understood that the gray scale is equal to zero gray scale, i.e. the liquid crystal layer L in the corresponding position needs to be opaque, the photochromic layer 3 in the region G255 is opaque in fig. 4, and the photochromic layer 3 in the region G0 is transparent. Even when light emitting component 2's halo shines on the liquid crystal layer L that corresponds zero grey scale position, most light all can be sheltered from by liquid crystal layer L even, the photochromic layer 3 that is located liquid crystal layer L light-emitting side can not receive light emitting component 2 and shine, photochromic layer 3 is in the shading state, when showing the grey scale and being equal to zero grey scale, because liquid crystal layer L's blocking effect, even photochromic layer 3 receives light emitting component 2 and shines, light intensity also can be very little, photochromic layer 3 is in nearly opaque state, can play the shading effect equally.
Referring to fig. 3, in some optional embodiments, the display panel further includes a color film substrate 5 disposed on a side of the liquid crystal layer L away from the substrate 1, and the photochromic layer 3 is disposed on a side of the color film substrate 5 away from the substrate 1.
In this embodiment, the photochromic layer 3 is disposed on a side of the color filter substrate 5 away from the substrate 1, so as to effectively avoid the photochromic layer 3 from deflecting liquid crystal molecules of the liquid crystal layer L, and the color filter substrate 55 includes a substrate 154, a black matrix 51, a color resistor 52 and a planarization layer 53. The color film substrate 55 is provided with a black matrix 51, the black matrix 51 is made of high molecular resin, carbon black and other opaque materials, the problems of light leakage of the display panel and visibility of routing can be effectively solved, the shading of the black matrix 51 can enable the photochromic layer 3 to be in a shading state corresponding to the corresponding position, the light emitted from the color resistor is strong and weak corresponding to the light emitting of each pixel unit, the light transmittance of the photochromic layer 3 is changed along with the light emitting of the corresponding color resistor, namely, the light emitting of the pixel unit is changed, the state of the photochromic layer 3 is further accurately controlled, and the adverse effect of the photochromic layer 3 on the normal light emitting of the display panel is avoided.
Referring to fig. 5, fig. 5 is a film structure diagram of a display device according to another embodiment of the invention; in some optional embodiments, the display panel further includes an optical film layer 7, an array layer 6 and a liquid crystal layer L, which are stacked on the light emitting side of the light emitting element 2, at least two optical film layers 7 between the light emitting element 2 and the array layer 6; the photochromic layer 3 is provided between the optical film layer 7 and the light emitting element 2.
It is understood that, in the present embodiment, the photochromic layer 3 is disposed between the optical film layer 7 and the light emitting element 2, that is, the photochromic layer 3 is closer to the light emitting element 2, that is, the state of the photochromic layer 3 is not affected by other film layers, and the state change of the photochromic layer 3 can be consistent with the light emitting intensity of the light emitting element 2.
It should be noted that, because a plurality of light emitting elements 2 are included in a single partition, when the light emitting elements 2 in the single partition emit light, at the middle part of the single partition, because the light emitted from each light emitting element 2 is superimposed, the light emitting intensity of the middle part is large, the light transmittance of the photochromic layer 3 at the corresponding position is also large, and the light emitting intensity of the edge part of the single partition is relatively small, the light transmittance of the photochromic layer 3 at the corresponding position is also small, that is, the photochromic layer 3 can play a certain role in shielding the light emitted from the edge part of the single partition, thereby avoiding the problem that the display panel is halation visible.
Optionally, the array layer 6 includes a substrate 61, an active layer 62, a gate metal layer 63, and a source drain metal layer 64, where the gate metal layer 63 and the source drain metal layer 64 may specifically adopt a single-layer metal such as molybdenum or a titanium-aluminum-titanium composite metal layer, and specifically, molybdenum has good conductivity, and molybdenum does not deflect light.
Referring to fig. 6 and 7, the photochromic layer 3 may be disposed at other positions besides the position where the photochromic layer 3 is disposed in the above-described embodiment, fig. 6 is a film structure diagram of a display device according to still another embodiment of the present invention, and fig. 7 is a film structure diagram of a display device according to still another embodiment of the present invention. In some optional embodiments, the display panel further includes an optical film layer 7, an array layer 6 and a liquid crystal layer L, which are disposed on the light emitting side of the light emitting element 2 and stacked, at least two optical film layers 7 between the light emitting element 2 and the array layer 6; the photochromic layer 3 is arranged between two adjacent optical film layers 7.
It should be noted that the optical film layer 7 may specifically be composed of films with various functions such as further convergence, filtering, brightening, color conversion, and the like for the light emitted from the light emitting element 2, and since the photochromic layer 3 is also a film for further adjusting and controlling the light emitted from the light emitting element 2, the photochromic layer 3 is disposed between two adjacent optical film layers 7, so as to be convenient for placement, not affecting the film preparation process of the array layer 6, and ensure the preparation efficiency. The photochromic layer 3 in fig. 6 is provided between the diffusion layer 71 and the color conversion layer 72, and the photochromic layer 3 in fig. 7 is provided between the brightness enhancing layer 73 and the polarizer 74, but the photochromic layer 3 may be provided between the other two optical film layers 7, and is not particularly limited.
In other optional embodiments, the photochromic layer 3 may also be disposed between the optical film layers 7 and the array layer 6, that is, the photochromic layer 3 does not affect the preparation sequence of each optical film layer 7, and does not affect the film layer preparation process of the array layer 6, so that the arrangement of the photochromic layer 3 is simplified, the process is simple, and the operation is easy.
Referring to fig. 8, fig. 8 is a film structure diagram of a display device according to another embodiment of the invention; in some alternative embodiments, the optical film layer 7 includes a diffusion layer 71, a color conversion layer 72, a brightness enhancement layer 73, and a polarizer 74 disposed in a direction Z perpendicular to the plane of the substrate 1; the photochromic layer 3 is disposed between the polarizer 74 and the array layer 6.
In this embodiment, the diffusion layer 71 is a physical phenomenon that light rays are refracted, reflected and scattered by a chemical or physical means when encountering two media with different refractive indexes (densities) during the traveling path, and inorganic or organic light diffusers are added to a base material such as PMMA (Poly methyl acrylate), PC (Polycarbonate), PS (Polystyrene), PP, hips (High impact Polystyrene), or the like, or the light rays are artificially adjusted by an array arrangement of micro-features on the surface of the base material, so that the traveling path of the light rays is changed, and the incident light rays are fully dispersed to generate an optical diffusion effect. The diffusion layer 71 may be a micro-structured light diffusion plate, which has high transmittance, and by changing the shape and different arrangement of the micro-structures, the diffusion angle, the space of the light field and the energy distribution can be adjusted, so as to affect the uniformity and the transmittance of the light diffusion sheet.
The color conversion layer 72 can improve color purity, light efficiency and color gamut, and the color conversion layer 72 can be made of quantum dot materials.
The brightness enhancement layer 73 is a layer for improving the luminous efficiency of the backlight, i.e., the light emitting element 2 portion, by guiding the light emitted from the light emitting element 2, and is typically a prism sheet, a multifunctional prism sheet, or the like.
In this embodiment, by disposing the photochromic layer 3 between the polarizer 74 and the array layer 6, the photochromic layer 3 can be effectively prevented from damaging the mutual matching effect among the diffusion layer 71, the color conversion layer 72, the brightness enhancement layer 73 and the polarizer 74, and the processing effect of the optical film layer 7 on the light emitted from the light emitting element 2 is ensured.
In some alternative embodiments, the photochromic layer 3 has a thickness of 0.1 μm to 1 μm. It can be understood that the thickness of the photochromic layer 3 should not be too small, and too small will affect the light-shielding effect of the photochromic layer 3, and too large the thickness of the photochromic layer 3 will also not be too large, and too large will affect the overall film thickness of the display panel. The photochromic layer 3 can be formed by coating or evaporation and other processes, the control difficulty of the thickness precision of the formed photochromic layer 3 is considered, optionally, the thickness of the photochromic layer 3 is 0.5 mu m, namely, the thickness of the photochromic layer 3 is not too small, the film thickness is not easy to control due to too small thickness, and the process requirement is high.
An embodiment of the present invention further provides an electronic device, including: the display device of any of the above embodiments. Therefore, the electronic device provided in the embodiment of the present invention has the technical effects of the technical solutions of the display devices in any of the embodiments, and the explanations of the structures and terms that are the same as or corresponding to those in the embodiments are not repeated herein. The electronic device provided by the embodiment of the invention can be applied to a mobile phone and can also be any electronic product with a display function, including but not limited to the following categories: the touch screen display device comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited to this.
As described above, only the specific embodiments of the present invention are provided, and it is clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
It should also be noted that the exemplary embodiments noted in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Claims (13)
1. A display device, comprising:
the light-emitting device comprises a substrate, a light-emitting module and a light-emitting module, wherein the substrate is provided with a first surface, a plurality of light-emitting elements which are arranged in an array are arranged on the first surface, and the light-emitting elements emit light along a direction vertical to the first surface;
the photochromic layer is located light emitting element's light-emitting side, the photochromic layer has printing opacity state and shading state, receives the part that light emitting element light-emitting was shone the photochromic layer by shading state transform is the printing opacity state, so that light emitting element's light outgoing.
2. The display device of claim 1, further comprising a light control layer disposed between the photochromic layer and the light-emitting element.
3. A display device as claimed in claim 2, wherein the light control layer comprises a liquid crystal layer.
4. The display device according to claim 2, wherein the light transmittance of the photochromic layer is proportional to a display gray scale.
5. The display device according to claim 4, wherein the photochromic layer is in a light-blocking state when the display gray scale is equal to a zero gray scale;
when the display gray scale is larger than zero gray scale, the light emitting of the light emitting element passes through the liquid crystal layer to irradiate the photochromic layer, and the photochromic layer is changed into the light transmission state from the shading state.
6. The display device according to claim 3, further comprising a color film substrate disposed on a side of the liquid crystal layer facing away from the substrate, wherein the photochromic layer is disposed on a side of the color film substrate facing away from the substrate.
7. The display device according to claim 1, further comprising an optical film layer, an array layer, and a liquid crystal layer which are provided on a light exit side of the light emitting element and stacked, wherein at least two optical film layers are provided between the light emitting element and the array layer;
the photochromic layer is arranged between the optical film layer and the light-emitting element.
8. The display device according to claim 1, further comprising an optical film layer, an array layer, and a liquid crystal layer which are provided on a light exit side of the light emitting element and stacked, wherein at least two optical film layers are provided between the light emitting element and the array layer;
the photochromic layer is arranged between the two adjacent optical film layers.
9. The display device according to claim 1, further comprising an optical film layer, an array layer, and a liquid crystal layer which are provided on a light exit side of the light emitting element and stacked, wherein at least two optical film layers are provided between the light emitting element and the array layer;
the photochromic layer is arranged between the optical film layer and the array layer.
10. The display device according to claim 9, wherein the optical film layer comprises a diffusion layer, a color conversion layer, a brightness enhancement layer, and a polarizer disposed in a direction perpendicular to a plane of the substrate;
the photochromic layer is arranged between the polarizer and the array layer.
11. The display device according to claim 1, wherein the photochromic layer comprises at least one of a transition metal sulfide, black phosphorus.
12. The display device according to claim 1, wherein the photochromic layer has a thickness of 0.1 to 1 μm.
13. An electronic device, comprising: a display device as claimed in any one of claims 1 to 12.
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| KR20080038927A (en) * | 2006-10-31 | 2008-05-07 | 엘지디스플레이 주식회사 | Microlens array sheet and liquid crystal display device using the same |
| CN101581852A (en) * | 2009-06-24 | 2009-11-18 | 昆山龙腾光电有限公司 | Colored filter substrate, manufacture method thereof and liquid crystal display panel |
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