CN114637143B - Display device and electronic apparatus - Google Patents
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- CN114637143B CN114637143B CN202210418028.1A CN202210418028A CN114637143B CN 114637143 B CN114637143 B CN 114637143B CN 202210418028 A CN202210418028 A CN 202210418028A CN 114637143 B CN114637143 B CN 114637143B
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Classifications
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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
-
- 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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- Physics & Mathematics (AREA)
- 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, wherein the display device comprises: the light-emitting device comprises a substrate, a first light-emitting element and a second light-emitting element, wherein the substrate is provided with a first surface, a plurality of light-emitting elements are arranged on the first surface in an array manner, and the light-emitting elements emit light along the direction perpendicular 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 shielding state, and part of the photochromic layer irradiated by light emitted by the light emitting element is converted into the light transmitting state from the light shielding state so as to emit light of the light emitting element. At the position with small light intensity, the photochromic layer is in a shading state, namely the photochromic layer is black and opaque, so that the light of the luminous element in a high-brightness state below is prevented from exiting, the light of the dark-state sub-pixel is reduced, and halation is avoided. In the embodiment, the photochromic layer is arranged to shield the light emitted by the edge of the light-emitting element with smaller light intensity, so that 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
An LCD (liquid crystal display device, liquid Crystal Display) is applied to an electronic terminal, and because of the characteristics of the liquid crystal display device itself, an electronic terminal having many advantages such as a thin body, power saving, no radiation, and the like can be manufactured. Most of the liquid crystal display devices in the market are backlight type liquid crystal displays, which include a liquid crystal module and a backlight module. Since the liquid crystal panel itself does not emit light, the backlight module needs to provide a light source to display images normally, and thus the backlight module becomes one of the key components of the liquid crystal display device.
The backlight module is divided into a side-in type backlight module and a direct type backlight module according to the incidence positions of the light sources. The direct type backlight module is to set a light source, such as LED (Light Emitting Diode ) lamp, behind the liquid crystal panel to directly form a surface light source for providing to the liquid crystal panel. The structure of the existing liquid crystal display device is limited, so that the halation problem can occur during display, and the experience effect of a user is affected.
Therefore, a new display device and electronic apparatus are needed.
Disclosure of Invention
The embodiment of the invention provides a display device and electronic equipment, wherein the light-emitting device can shield light with smaller light intensity at the edge of a light-emitting element by arranging a photochromic layer, so that halation is avoided.
In a first aspect, an embodiment of the present invention provides a display apparatus, including: the light-emitting device comprises a substrate, a first light-emitting device and a second light-emitting device, 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 the direction perpendicular to the first surface; the photochromic layer is arranged on the light emitting side of the light emitting element, and is provided with a light transmitting state and a light shielding state, and the part of the photochromic layer irradiated by the light emitted by the light emitting element is converted from the light shielding state to the light transmitting state so as to emit the light of the light emitting element.
In a second aspect, an embodiment of the present invention provides an electronic device, including: the display device of any one 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 larger light intensity is converted from a light-shielding state to a light-transmitting state, namely, the light emitted by the light-emitting element can normally exit from the photochromic layer in the light-transmitting state, and the photochromic layer is in the light-shielding state at a position with small light intensity, namely, the photochromic layer is black and opaque, so that the light of the light-emitting element in a high-brightness state (for example, corresponding to the display gray level of 255 gray levels) below is prevented from exiting, and thus, the light exiting of the dark-state sub-pixels is reduced, and the occurrence of halation is avoided. In the embodiment, the photochromic layer is arranged to shield the light emitted by the edge of the light-emitting element with smaller light intensity, so that halation is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a film layer structure diagram of a display device according to an embodiment of the present invention;
fig. 2 is a film layer 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 according to one embodiment of the present invention;
fig. 5 is a film layer structure diagram of a display device according to still 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 layer structure diagram of a display device according to still another embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the 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 invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 like elements in a process, method, article, or apparatus that comprises an element.
In order to better understand the present invention, a display device and an electronic apparatus according to embodiments of the present invention are described in detail below with reference to fig. 1 to 8.
Referring to fig. 1, fig. 1 is a film layer 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 are arranged on the first surface P1 in an array manner, and the light emitting elements 2 emit light along a direction perpendicular to the first surface P1; the photochromic layer 3 is disposed on the light emitting side of the light emitting element 2, the photochromic layer 3 has a light transmitting state and a light shielding state, and a portion of the photochromic layer 3 irradiated by the light emitted from the light emitting element 2 is converted from the light shielding state to the light transmitting state, so that the light of the light emitting element 2 is 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 by the light-emitting element 2 with larger light intensity is converted from a shading state to a light-transmitting state, namely, the light emitted by the light-emitting element 2 can normally exit from the photochromic layer 3 in the light-transmitting state, and the photochromic layer 3 is in the shading state at a position with small light-emitting light intensity, namely, the photochromic layer 3 is black and opaque, so that the light of other light-emitting elements 2 in a high-brightness state (for example, corresponding to the display gray scale of 255 gray scales) below is prevented, and the light emission of dark-state sub-pixels is reduced, and the occurrence of halation is avoided. In the embodiment, the photochromic layer 3 is arranged to shield the light emitted by the edge of the light-emitting element 2 with smaller light intensity, so that halation is avoided.
By photochromic is meant that certain compounds undergo a change in molecular structure under the action of light of a certain wavelength and intensity, resulting in a corresponding change in their absorbance peak, i.e. color, of light, and such change is generally reversible.
For example, when the display gray level is 0 gray level, the light transmittance of the photochromic layer 3 is 0, that is, the photochromic layer 3 does not transmit light, and when the display gray level is 255 gray level, the light transmittance of the photochromic layer 3 is 95%, the light transmittance reaches the maximum value, however, 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 a material having a two-dimensional nano-meter and a light-transparent property, such as a transition metal sulfide or black phosphorus. For example, when black phosphor is used for the light-transparent layer, the light-transparent layer itself is gray black, and has a characteristic that the higher the incident light, the better the transparency.
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 along a direction perpendicular to the first surface P1, that is, the light emitting elements 2 in the embodiment of the present invention are direct type light emitting elements 2, and the light emitting elements 2 may be Micro LEDs (Micro Light Emitting Diode, 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 the figures and the patterns can be clearly displayed on a smaller 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 be a glass substrate 1, and the display panel is a rigid display panel that cannot be freely bent.
It is understood that the light-transmitting state and the light-shielding state of the photochromic layer 3 specifically mean that the light transmittance of the photochromic layer 3 can be changed from a light-shielding, light-impermeable state to a light-transmitting state after being irradiated with the light emitted from the light-emitting element 2.
Referring to fig. 2, fig. 2 is a film layer structure diagram of a display device according to another embodiment of the invention; to further control the light emission of the light emitting element 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 arranged between the photochromic layer 3 and the light emitting element 2.
It can be understood that the photochromic layer 3 needs to be irradiated by the light emitted from the light emitting element 2 to convert the form, in this embodiment, whether the light emitted from the light emitting element 2 can be emitted or not can be controlled by the light control layer 4, and the light transmittance of the light control layer 4 can be controlled by the voltage or the current, so as to control whether the light emitted from the light emitting element 2 is irradiated onto the photochromic layer 3 through the light control layer 4, so as to accurately control the light emitted from the corresponding position of the photochromic layer 3.
In the related art, when the light emitting element 2 is used as a backlight of a display panel, the partition dimming technology is adopted, so that the on-off and brightness adjustment of a backlight area can be controlled in real time, and accurate dynamic light control is realized. For example, when the light emitting element 2 is a Mini-LED, the light emitting area of the Mini-LED single partition is about 4.5mm by 4.5mm, a group of RGB pixel units is about 0.095mm by 0.095mm, a group of Mini-LEDs of single partition can provide light sources for 48 x 48 groups of pixels, when pixel units with corresponding display gray levels of 0 level and 255 level exist in the single partition corresponding to the Mini-LED in the high-brightness state, the light emitted by the Mini-LED in the high-brightness state is partially emitted through a part of the liquid crystal layer corresponding to the pixel unit with the 0 level dark state, that is, the pixel unit with the corresponding display gray level of 0 level dark state in the single partition corresponding to the Mini-LED in the high-brightness state can generate light with smaller light intensity, and further the pixel unit with the corresponding display gray level of 0 level dark state in the single partition corresponding to the Mini-LED in the high-brightness state is compared with the pixel unit with the surrounding non-brightness state in the single partition corresponding to the display gray level of 0 level, so that the pixel unit with the Mini-LED in the high-brightness state is finally generated.
In this embodiment, by arranging the photochromic layer 3, when the light emitted from the pixel unit corresponding to the gray level of 0 order dark state displayed in the single area corresponding to the Mini-LED in the highlight state irradiates 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 in the 0 order dark state with smaller light intensity can be shielded by the photochromic layer 3, the light emitted from the part is prevented from being visible, and halos are prevented from being generated.
Referring to fig. 3, fig. 3 is a film layer 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, and it is understood that the liquid crystal layer L includes liquid crystal molecules arranged in sequence, and the liquid crystal molecules deflect under an electric field formed by the common electrode 65 and the pixel electrode 66, so that the deflection angle affects the light emitting intensity of the light emitting element 2 in the liquid crystal layer L, and further affects the display picture of the display panel, so that when the display panel displays different pictures, the light transmittance of different positions of the liquid crystal layer L is different, and since the photochromic layer 3 is disposed on the light emitting side of the liquid crystal layer L, the light transmitting state and the light shielding state of each part of the photochromic layer 3 also synchronously change along with the light emitting brightness of the liquid crystal layer L.
The brightness of the pixel unit corresponds to the brightness change of the liquid crystal molecules of the liquid crystal layer L, and the light transmission state and the shading state of each part of the photochromic layer 3 can synchronously change along with the brightness change of the liquid crystal layer L, namely the brightness of the photochromic layer 3 corresponds to the brightness change of the pixel unit, so that the problem of halation caused by the fact that the pixel unit with the corresponding display gray level of 0-order dark state in the single partition corresponding to the Mini-LED in the highlight state is brighter than the pixel unit in the peripheral non-luminous Mini-LED single partition is solved, and the display effect of the display panel is improved.
In order to avoid that the photochromic layer 3 affects the normal display of the display panel, in some alternative embodiments, the light transmittance of the photochromic layer 3 is proportional to the display gray scale.
It should be noted that, in general, the display gray scale includes 0 gray scale to 255 gray scale, and the 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 light transmittance at the corresponding liquid crystal molecules is, the larger the light emergent intensity is, the larger the light intensity irradiated to the corresponding position of the photochromic layer 3 is, the larger the light transmittance of the photochromic layer 3 is, namely the photochromic layer 3 has the characteristic that the stronger the intensity of incident light is, the better the transparency is.
For example, when the display gray level is 0 gray level, the light transmittance of the photochromic layer 3 is 0, that is, the photochromic layer 3 does not transmit light, when the display gray level is 0 gray level, the light transmittance of the photochromic layer 3 is 95%, the light transmittance reaches the maximum value, and 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 present invention; in some alternative embodiments, when the display gray level is equal to zero gray level, the photochromic layer 3 is in a light-shielding state; when the display gray level is greater than zero gray level, 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 will be appreciated that the display gray level is equal to zero gray level, i.e. the liquid crystal layer L at the corresponding position needs to be opaque, the photochromic layer 3 in the region G255 in fig. 4 is opaque, and the photochromic layer 3 in the region G0 is transparent. Even when the halo of the light-emitting element 2 irradiates the liquid crystal layer L corresponding to the zero gray level position, most of the light rays are even all blocked by the liquid crystal layer L, the photochromic layer 3 positioned on the light-emitting side of the liquid crystal layer L is not irradiated by the light rays of the light-emitting element 2, the photochromic layer 3 is in a shading state, and when the display gray level is equal to the zero gray level, the light intensity is small even if the photochromic layer 3 is irradiated by the light rays of the light-emitting element 2 due to the blocking effect of the liquid crystal layer L, and the photochromic layer 3 is in a near-opaque state and can also play a shading role.
Referring to fig. 3, in some alternative embodiments, the display panel further includes a color film substrate 5 disposed on a side of the liquid crystal layer L facing away from the substrate 1, and the photochromic layer 3 is disposed on a side of the color film substrate 5 facing away from the substrate 1.
In this embodiment, the photochromic layer 3 is disposed on the side of the color film substrate 5 away from the substrate 1, so that adverse effects of the photochromic layer 3 on the liquid crystal molecule deflection of the liquid crystal layer L can be effectively avoided, and the color film substrate 55 includes a substrate 154, a black matrix 51, a color resistor 52 and a flat layer 53. The color film substrate 55 is provided with a black matrix 51, the black matrix 51 is made of light-tight materials such as polymer resin and carbon black, the problems of light leakage, visible wiring and the like of the display panel can be effectively prevented, the corresponding position of the photochromic layer 3 is in a shading state through shielding of the black matrix 51, the light emitted from the color resistor is light intensity corresponding to each pixel unit, the light transmittance of the photochromic layer 3 changes along with the light intensity of the corresponding color resistor, namely along with the light emitting change of the pixel unit, the state of the photochromic layer 3 is further accurately controlled, and adverse effects of the photochromic layer 3 on normal light emission of the display panel are 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 alternative embodiments, the display panel further includes an optical film layer 7 disposed on the light emitting side of the light emitting element 2, an array layer 6, and a liquid crystal layer L, 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 will be appreciated that in this 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 output intensity of the light emitting element 2.
It should be noted that, because the single partition includes the plurality of light emitting elements 2, when the light emitting elements 2 in the single partition emit light, in the middle portion of the single partition, due to superposition of light emitted by each light emitting element 2, the light emitted intensity of the middle portion is larger, the light transmittance of the photochromic layer 3 at the corresponding position is also larger, and the light emitted intensity of the edge portion of the single partition is relatively smaller, the light transmittance of the photochromic layer 3 at the corresponding position is also smaller, that is, the photochromic layer 3 can play a certain role in shielding the light emitted at the edge portion of the single partition, so as to avoid the problem of halation and visibility of the display panel.
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 be a single-layer metal such as molybdenum or a titanium-aluminum-titanium composite metal layer, and in particular, molybdenum has good electrical conductivity and does not deflect light.
In addition to the arrangement positions of the photochromic layer 3 shown in the above embodiments, the photochromic layer 3 may be arranged at other positions, referring to fig. 6 and 7, fig. 6 is a film structure diagram of a display device according to another embodiment of the present invention, and fig. 7 is a film structure diagram of a display device according to another embodiment of the present invention. In some alternative embodiments, the display panel further includes an optical film layer 7 disposed on the light emitting side of the light emitting element 2, an array layer 6, and a liquid crystal layer L, at least two optical film layers 7 between the light emitting element 2 and the array layer 6; the photochromic layer 3 is disposed between two adjacent optical film layers 7.
It should be noted that, the optical film layer 7 may be specifically composed of a plurality of film layers with different functions such as further converging, filtering, brightening, color conversion, etc. the light emitted from the light emitting element 2, and since the photochromic layer 3 is also a film layer 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 that the placement is convenient, the film layer preparation process of the array layer 6 is not affected, and the preparation efficiency is ensured. 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 other two optical film layers 7 without particular limitation.
In other alternative embodiments, the photochromic layer 3 may be disposed between the optical film layer 7 and the array layer 6, that is, the photochromic layer 3 does not affect the preparation sequence of each optical film layer 7, or 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 enhancing 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 refraction, reflection and scattering occur when light encounters two media with different refractive indexes (densities) in the middle of the path of the light by chemical or physical means, and by adding an inorganic or organic light diffusion agent to a substrate base such as PMMA (Poly methyl meth acrylate ), PC (Polycarbonate), PS (Polystyrene), PP, hips (High impact Polystyrene ), or by artificially adjusting the light by arranging the micro-feature structures on the surface of the substrate, the light is refracted, reflected and scattered in different directions, thereby changing the path of the light, and the incident light is sufficiently dispersed to generate the optical diffusion effect. The diffusion layer 71 may be specifically a micro-structured light diffusion plate, which has high transmittance, and by changing the shape and different arrangements of the micro-structures, the diffusion angle, the space and the energy distribution of the light field can be adjusted, so as to realize the influence on the uniformity and the transmittance of the light diffusion sheet.
The color conversion layer 72 may improve color purity, light efficiency and color gamut area, and the color conversion layer 72 may be made of a quantum dot material.
The brightness enhancing layer 73 is a prism sheet, a multifunctional prism sheet, or the like for guiding and correcting the light emitted from the light emitting element 2 and improving the light emitting efficiency of the light emitting element 2, which is a backlight.
Polarizer 74 is collectively referred to as a polarizer and controls the polarization direction of a particular beam. The main function is to convert natural light without polarization into polarized light, and control the light penetration by turning the liquid crystal, so as to generate the display effect of bright and dark of the panel, and control the light passing degree by utilizing the torsion characteristic of the liquid crystal molecule.
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 interaction effect among the diffusion layer 71, the color conversion layer 72, the brightness enhancement layer 73 and the polarizer 74, and the light-emitting treatment effect of the optical film layer 7 on the light-emitting element 2 can be ensured.
In some alternative embodiments, the thickness of the photochromic layer 3 is between 0.1 μm and 1 μm. It will be appreciated that the thickness of the photochromic layer 3 should not be too small, which would affect the shading effect of the photochromic layer 3, and the thickness of the photochromic layer 3 should not be too large, which would affect the overall film thickness of the display panel. The photochromic layer 3 can be formed by a coating or vapor deposition process, and the thickness of the photochromic layer 3 is optionally 0.5 μm in consideration of the difficulty in controlling the precision of the formed film thickness of the photochromic layer 3, i.e., the thickness of the photochromic layer 3 is not too small, the film thickness is not easy to control if too small, and the process requirement is high.
The embodiment of the invention also provides electronic equipment, which comprises: the display device of any one of the above embodiments. Therefore, the electronic device provided in the embodiment of the present invention has the technical effects of the technical solution of the display device in any of the foregoing embodiments, and the explanation of the same or corresponding structure and terms as those of the foregoing embodiments is not repeated herein. The electronic equipment 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: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interactive terminal, etc., which are not particularly limited in this embodiment of the invention.
In the foregoing, only the specific embodiments of the present invention are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the locating processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention, and they should be included in the scope of the present invention.
It should also be noted that the exemplary embodiments mentioned in this disclosure 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, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
Claims (13)
1. A display device, comprising:
the light-emitting device comprises a substrate, a first light-emitting device and a second light-emitting device, 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 the direction perpendicular to the first surface;
the photochromic layer is arranged on the light-emitting side of the light-emitting element and is provided with a light-transmitting state and a light-shielding state, and the part of the photochromic layer irradiated by the light emitted by the light-emitting element is converted from the light-shielding state to the light-transmitting state so as to emit the light of the light-emitting element;
at the position with small light intensity, the photochromic layer is in a shading state.
2. The display device according to claim 1, further comprising a light control layer provided between the photochromic layer and the light-emitting element.
3. The display device according to 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 in direct proportion to the display gray scale.
5. The display device according to claim 4, wherein the photochromic layer is in a light-shielding state when the display gray scale is equal to zero gray scale;
when the display gray level is larger than zero gray level, the light emitted by the light-emitting element passes through the liquid crystal layer to irradiate the photochromic layer, and the photochromic layer is converted from the shading state to the light transmitting state.
6. A 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 at least two optical film layers provided on a light emitting side of the light emitting element, the optical film layers being provided in a stacked manner, an array layer, and a liquid crystal layer, 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 at least two optical film layers provided on a light emitting side of the light emitting element, the optical film layers being provided in a stacked manner, an array layer, and a liquid crystal layer, between the light emitting element and the array layer;
the photochromic layer is arranged between two adjacent optical film layers.
9. The display device according to claim 1, further comprising at least two optical film layers provided on a light emitting side of the light emitting element, the optical film layers being provided in a stacked manner, an array layer, and a liquid crystal layer, between the light emitting element and the array layer;
the photochromic layer is disposed between the optical film layer and the array layer.
10. The display device according to claim 9, wherein the optical film layer includes a diffusion layer, a color conversion layer, a brightness enhancing layer, and a polarizer disposed in a direction perpendicular to a plane in which the substrate is disposed;
the photochromic layer is arranged between the polarizer and the array layer.
11. The display device of 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 thickness of the photochromic layer is 0.1 μm 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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| JP2007114278A (en) * | 2005-10-18 | 2007-05-10 | Fuji Xerox Co Ltd | Driving method of optical address type spatial optical modulator and driving device of optical address type spatial optical modulator |
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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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