CN110632804A - Light adjusting film, display device and control method thereof - Google Patents
Light adjusting film, display device and control method thereof Download PDFInfo
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- CN110632804A CN110632804A CN201910935853.7A CN201910935853A CN110632804A CN 110632804 A CN110632804 A CN 110632804A CN 201910935853 A CN201910935853 A CN 201910935853A CN 110632804 A CN110632804 A CN 110632804A
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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
- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
- G02F1/1533—Constructional details structural features not otherwise provided for
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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
- G02F1/15—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 an electrochromic effect
- G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Theoretical Computer Science (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention discloses a light adjusting film, a display device and a control method thereof, and belongs to the technical field of display. The light adjusting film comprises: a first electrochromic layer and a second electrochromic layer are disposed in a stack. The first electrochromic layer is provided with first color changing regions and first non-color changing regions which are alternately arranged, and the first color changing regions have a light transmitting state and a light shading state; the second electrochromic layer has a second color shifting region having a light transmitting state and a light absorbing state. When the light modulation film is arranged between a display panel and a backlight module in the display device, if a first color changing region in the first electrochromic layer is converted from a light transmitting state to a light shading state, the display device can realize a peep-proof function; if the second color-changing area in the second electrochromic layer is converted from a light-transmitting state to a light-absorbing state, the display device can realize the eye protection function.
Description
Technical Field
The invention relates to the technical field of display, in particular to a light adjusting film, a display device and a control method of the display device.
Background
Display devices such as mobile phones or tablet computers are occupying an increasing proportion of human lives. When a user uses the display device, the content displayed by the display device is easy to peep, and the risk of information leakage is high; and the display device may cause damage to the eyes of the user when the display device is used for a long time. Therefore, there is a need for a display device having both peep-proof and eye-protecting functions.
Disclosure of Invention
The embodiment of the invention provides a light adjusting film, a display device and a control method thereof. The problem of can't realize peep-proof function and eyeshield function simultaneously among the display device of prior art can be solved, technical scheme is as follows:
in a first aspect, there is provided a light adjusting film, the light adjusting film being located on a substrate, the light adjusting film comprising:
the display device comprises a first electrochromic layer and a second electrochromic layer which are stacked, wherein the first electrochromic layer is provided with a first color changing region and a first non-color changing region which are alternately arranged, the second electrochromic layer is provided with a second color changing region, the first color changing region is in a light transmitting state and a light shading state, the second color changing region is in a light transmitting state and a light absorbing state, and the orthographic projection of the second color changing region on a substrate covers the orthographic projection of the first non-color changing region on the substrate;
wherein the second color shifting region is configured to absorb blue light when in the absorbed state.
Optionally, the first electrochromic layer comprises: the electrochromic device comprises a plurality of first electrochromic strips arranged in parallel, wherein the area where the first electrochromic strips are located is a first electrochromic region, and the area between two adjacent first electrochromic strips is a first non-electrochromic region;
the light adjusting film further comprises: first drive electrode layer and public electrode layer, first electrochromic layer is located first drive electrode layer with between the public electrode layer, first drive electrode layer or public electrode layer is located first electrochromic layer with between the second electrochromic layer, first drive electrode layer includes: the first electrode strips are arranged in parallel and correspond to the first electrochromic strips one by one;
each of the first electrochromic stripes is configured to switch between the light-transmissive state and the light-blocking state under control of the common electrode layer and the corresponding first electrode stripe.
Optionally, the second electrochromic layer is a plate-shaped electrochromic layer, and an area where the second electrochromic layer is located is the second electrochromic region;
the light adjusting film further comprises: a second drive electrode layer, the second electrochromic layer being located between the common electrode layer and the second drive electrode layer, the common electrode layer and the second drive electrode layer each comprising a plate electrode;
the second electrochromic layer is configured to switch between the light-transmitting state and the light-absorbing state under control of the common electrode layer and the second drive electrode layer.
Optionally, the second electrochromic layer further has a second non-color-changing region, and the second color-changing region and the second non-color-changing region are alternately arranged.
Optionally, the second electrochromic layer comprises: a plurality of second electrochromic strips arranged in parallel, wherein the area where the second electrochromic strip is located is the second electrochromic region, and the area between two adjacent second electrochromic strips is the second non-electrochromic region;
the light adjusting film further comprises: a second drive electrode layer, the second electrochromic layer located between the common electrode layer and the second drive electrode layer, the second drive electrode layer comprising: the second electrode strips are arranged in parallel and correspond to the second electrochromic strips one by one;
each of the second electrochromic strips is configured to switch between the light-transmitting state and the light-absorbing state under control of the common electrode layer and the corresponding second electrode strip.
In a second aspect, there is provided a display device comprising: the display device comprises a display panel, a backlight module located on the non-display side of the display panel, and a light adjusting film located between the display panel and the backlight module, wherein the light adjusting film is any one of the light adjusting films in the first aspect.
In a third aspect, there is provided a control method of a display device, which is applied to the display device of the second aspect, the method including:
when the display device is in the peep-proof display mode, the first color changing region of the first electrochromic layer is controlled to be converted from a light transmitting state to a light shielding state, so that the light adjusting film forms light shielding regions and light transmitting regions which are alternately arranged;
when the display device is in an eye protection display mode, the second color changing region of the second electrochromic layer is controlled to be converted from a light transmitting state to a light absorbing state, so that the light adjusting film can absorb blue light in light emitted by the backlight source.
Optionally, the first electrochromic layer comprises: the electrochromic device comprises a plurality of first electrochromic strips arranged in parallel, wherein the area where the first electrochromic strips are located is a first electrochromic region, and the area between two adjacent first electrochromic strips is a first non-electrochromic region; the light adjusting film further comprises: first drive electrode layer and public electrode layer, first electrochromic layer is located first drive electrode layer with between the public electrode layer, first drive electrode layer or public electrode layer is located first electrochromic layer with between the second electrochromic layer, first drive electrode layer includes: the first electrode strips are arranged in parallel and correspond to the first electrochromic strips one by one;
when the display device is in a peep-proof display mode, controlling the first color-changing region of the first electrochromic layer to be converted from a light-transmitting state to a light-shielding state, including:
after a first instruction used for indicating that the display device is in a peep-proof display mode is received, based on the first instruction, a first voltage is applied to the first electrode bar, a common voltage is applied to the common electrode layer, and the corresponding first electrochromic bar is converted into a dark color state from a transparent state.
Optionally, the first instruction carries width information for indicating a width of a light-transmitting area to be formed by the light adjusting film, and/or area information for indicating an area in a display area of the display panel, where peep-proof display is required;
based on the first instruction, applying a first voltage to the first electrode bar and applying a common voltage to the common electrode layer to convert the corresponding first electrochromic bar from a transparent state to a dark state includes:
determining a plurality of target first electrode stripes in the first driving electrode layer based on the carried width information and/or area information of the first instruction;
and applying a first voltage to each target first electrode bar and applying a common voltage to the common electrode layer to convert the first electrochromic bars corresponding to the target first electrode bars from a transparent state to a dark state.
Optionally, the light adjusting film further includes: a second drive electrode layer, the second electrochromic layer being located between the common electrode layer and the second drive electrode layer;
when the display device is in the eyeshield display mode, control the second color-changing area of second electrochromic layer is changed into the extinction state by the printing opacity state, include:
after receiving a second instruction for indicating that the display device is in an eye protection display mode, applying a second voltage to the second driving electrode layer and applying a common voltage to the common electrode layer based on the second instruction, so that the second color-changing region of the second electrochromic layer is converted from a light-transmitting state to a light-absorbing state.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the light adjusting film comprises: a first electrochromic layer and a second electrochromic layer are disposed in a stack. The first electrochromic layer is provided with first color changing regions and first non-color changing regions which are alternately arranged, and the first color changing regions have a light transmitting state and a light shading state; the second electrochromic layer has a second color shifting region having a light transmitting state and a light absorbing state. When the light modulation film is arranged between a display panel and a backlight module in a display device, if a first color changing area in a first electrochromic layer is converted from a light transmitting state to a light shading state, the light modulation film can form light shading areas and light transmitting areas which are alternately arranged, so that the visual angle range of the display device is reduced, and the display device can realize a peep-proof function; if the second color-changing area in the second electrochromic layer is changed into the extinction state by the printing opacity state, this light modulation membrane can form the blue light in the light of backlight unit outgoing, has reduced display device and has caused the probability of damage to user's eyes to make this display device possess the eyeshield function.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description 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 schematic structural diagram of a light adjusting film according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another light adjusting film provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another light adjusting film provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for manufacturing a light-adjusting film according to an embodiment of the present invention;
fig. 6 is a flowchart of a control method of a display device in a peep-proof display mode according to an embodiment of the present invention;
fig. 7 is a top view of a light adjusting film according to an embodiment of the present invention;
FIG. 8 is a schematic view of the light modulating film shown in FIG. 7 with light transmitting and light blocking regions arranged alternately;
FIG. 9 is a schematic view of another alternate arrangement of light transmitting and light blocking regions formed by the light modulating film shown in FIG. 7;
fig. 10 is a schematic view of another light-transmitting area and light-shielding area alternately arranged formed by the light-adjusting film shown in fig. 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a light modulation film provided in an embodiment of the present invention. The light adjusting film 100 can be located on a substrate 00, and the light adjusting film 100 can include: a first electrochromic layer 101 and a second electrochromic layer 102 are stacked.
The first electrochromic layer 101 has first color-changing regions 101a and first non-color-changing regions 101b alternately arranged. Wherein the first color-changing region 101a has a light-transmitting state and a light-blocking state; the first non-color-changing region 101b has only a light transmitting state.
The second electrochromic layer 102 has second electrochromic regions 102 a. Wherein the second color-changing region 102 has a light-transmitting state and a light-absorbing state. The second color-shifting region 102 is configured to absorb blue light when in an absorbing state.
Wherein an orthographic projection of the second color-changing regions 102a of the second electrochromic layer 102 on the substrate 00 covers an orthographic projection of the first non-color-changing regions 101b of the first electrochromic layer 101 on the substrate 00.
In the embodiment of the present invention, when the light modulation film 100 is disposed between a display panel and a backlight module in a display device, if the first color-changing region 101a of the first electrochromic layer 101 is switched from a light-transmitting state to a light-blocking state, the light modulation film 100 can form a light-blocking region (the light-blocking region is the first color-changing region 101a in the light-blocking state) and a light-transmitting region (the light-transmitting region is the first non-color-changing region 101b) which are alternately arranged, so that the viewing angle range of the display device is reduced, and the display device can realize a peep-proof function; if the second color-changing region 102a of the second electrochromic layer 102 is converted from a light-transmitting state to a light-absorbing state, the light-adjusting film 100 can form blue light in light emitted by the backlight module, so that the proportion of the blue light in the light emitted by the eyes of the user by the display device is reduced, the probability of damage to the eyes of the user by the display device is reduced, and the display device has an eye protection function. When the orthographic projection of the second color-changing region 102a on the substrate 00 covers the orthographic projection of the first non-color-changing region 101b on the substrate 00, the eye-protecting effect of the display device in the peep-proof display mode can be improved.
In summary, the light adjusting film provided in the embodiment of the present invention includes: a first electrochromic layer and a second electrochromic layer are disposed in a stack. The first electrochromic layer is provided with first color changing regions and first non-color changing regions which are alternately arranged, and the first color changing regions have a light transmitting state and a light shading state; the second electrochromic layer has a second color shifting region having a light transmitting state and a light absorbing state. When the light modulation film is arranged between a display panel and a backlight module in a display device, if a first color changing area in a first electrochromic layer is converted from a light transmitting state to a light shading state, the light modulation film can form light shading areas and light transmitting areas which are alternately arranged, so that the visual angle range of the display device is reduced, and the display device can realize a peep-proof function; if the second color-changing area in the second electrochromic layer is changed into the extinction state by the printing opacity state, this light modulation membrane can form the blue light in the light of backlight unit outgoing, has reduced display device and has caused the probability of damage to user's eyes to make this display device possess the eyeshield function.
Optionally, referring to fig. 2, fig. 2 is a schematic structural diagram of another light modulation film provided in the embodiment of the present invention. The first electrochromic layer 101 in the light-adjusting film may include: a plurality of first electrochromic strips 1011 arranged in parallel. In the first electrochromic layer 101, the first electrochromic regions 101a refer to regions where the first electrochromic stripes 1011 are located; the first non-color-changing region 101b refers to a region between two adjacent first electrochromic strips 1011.
The light adjusting film 100 may further include: a first drive electrode layer 103 and a common electrode layer 104. The first driving electrode layer 103 and the common electrode layer 104 may be both transparent electrode layers, and for example, the first driving electrode layer 103 and the common electrode layer 104 may be both indium tin oxide conductive layers or polythiophene conductive layers. The first electrochromic layer 101 is located between the first driving electrode layer 103 and the common electrode layer 104, the first driving electrode layer 103 or the common electrode layer 104 is located between the first electrochromic layer 101 and the second electrochromic layer 102, and fig. 2 schematically illustrates an example in which the common electrode layer 104 is located between the first electrochromic layer 101 and the second electrochromic layer 102.
The first driving electrode layer 103 may include: the plurality of first electrode strips 1031 are arranged in parallel, and the plurality of first electrode strips 1031 correspond to the plurality of first electrochromic strips 1011 one by one. It should be noted that, in the embodiment of the present invention, the arrangement direction of the plurality of first electrode strips 1031 is parallel to the arrangement direction of the plurality of first electrochromic strips 1011, and an orthographic projection of each first electrode strip 1031 on the substrate 00 coincides with an orthographic projection of the corresponding first electrochromic strip 1011 on the substrate 00.
In an embodiment of the invention, each first electrochromic strip 1011 is configured to switch between a light transmissive state and a light blocking state under the control of the common electrode layer 104 and the corresponding first electrode strip 1031. For example, when the first electrochromic bar 1011 is in the light-shielding state, the color of the first electrochromic bar 1011 is black; when first electrochromic bar 1011 is in a transmissive state, the color of first electrochromic bar 1011 is colorless (also referred to as transparent). Optionally, the light adjusting film 100 may further include: a first ion conductor layer a1 and a first ion storage layer B1 located between the first drive electrode layer 103 and the first electrochromic layer 101, wherein the first ion conductor layer a1 is in contact with the first electrochromic layer 101 and the first ion storage layer B1 is in contact with the first drive electrode layer 103. The material of the first ion conductor layer a1 may be an electrodeless solid lithium salt, and the first ion conductor layer a1 functions as: providing ions during the color change of the first color-changing regions 101a of the first electrochromic layer 101; the material of the first ion storage layer B1 may be tungsten trioxide, and the first ion storage layer B1 may be capable of functioning to balance charges during the color change of the first color changing region 101a of the first electrochromic layer 101. The material of the first electrochromic layer 101 may be iridium oxide, which is capable of undergoing color change, i.e., from colorless to black, or from black to colorless, under the control of the common electrode layer 104 and the first drive electrode layer 103. For example, when a voltage of 1.6 volts is applied to the first driving electrode layer 103 and a voltage of 0 volts is applied to the common electrode layer 104, the color of iridium oxide is black; when a voltage of-1.1 v was applied to the first driving electrode layer 103 and a voltage of 0 v was applied to the common electrode layer 104, the iridium oxide was colorless. The chemical equation involved in the process of the iridium oxide is as follows:
wherein, Ir (OH)3Represents iridium hydroxide, which is colorless; OH group﹣Hydroxyl ions; e.g. of the type﹣Represents an electric charge; IrO2·H2O represents iridium oxide, and its color is black.
Optionally, the light adjusting film 100 may further include: the first insulating medium C1 located between two adjacent first electrochromic strips 1011 can prevent the first driving electrode layer 103 and the common electrode layer from being short-circuited through the first insulating medium C1.
In the embodiment of the present invention, there are a plurality of structures of the second electrochromic layer 102, and the structures of the light adjusting films 100 formed by the second electrochromic layer 102 with different structures are different, and the embodiment of the present invention is schematically illustrated by taking the following two realizable manners as examples:
in a first implementation, as shown in fig. 2, the second electrochromic layer 102 is a plate-shaped electrochromic layer. The second electrochromic layer 102 is located in a region of the second electrochromic region 102 a.
The light adjusting film 100 may further include: a second driving electrode layer 105. The second electrochromic layer 102 is located between the common electrode layer 104 and the second drive electrode layer 105. The common electrode layer 104 and the second driving electrode layer 105 may be both plate-shaped electrodes.
In an embodiment of the present invention, the second electrochromic layer 102 is configured to perform a transition between a light-transmitting state and a light-absorbing state under the control of the common electrode layer 104 and the second drive electrode layer 105. For example, since a material with yellow color can absorb blue light, when the second electrochromic layer 102 is in a light absorption state, the color of the second electrochromic layer 102 is yellow; when the second electrochromic layer 102 is in a light-transmitting state, the second electrochromic layer 102 is colorless.
In a second implementation, as shown in fig. 3, the second electrochromic layer 102 further has second non-color-changing regions 102b, and the second color-changing regions 102a and the second non-color-changing regions 102b of the second electrochromic layer 102 are alternately arranged. Optionally, the second electrochromic layer 102 includes: a plurality of second electrochromic strips 1021 arranged in parallel. In the second electrochromic layer 102, the second color-changing region 102a refers to a region where the second electrochromic bar 1021 is located, and the second non-color-changing region 102b refers to a region between two adjacent second electrochromic bars 102 a. Wherein, the orthographic projection of the second non-color-changing region 102b on the substrate 00 is positioned in the orthographic projection of the first color-changing region 101a in the first electrochromic layer 101 on the substrate 00, so that the light passing through the light adjusting film 102 is avoided to exist in the light passing through the first non-color-changing region 101b and the second non-color-changing region 102b, and the light passing through the first non-color-changing region 101b passes through the second color-changing region 102a completely, thereby improving the eye protection effect of the light adjusting film.
The light adjusting film 100 may further include: a second driving electrode layer 105. The second electrochromic layer 102 is located between the common electrode layer 104 and the second drive electrode layer 105. The second driving electrode layer 105 includes: the second electrode stripes 1051 are arranged in parallel, and the second electrode stripes 1051 correspond to the second electrochromic stripes 1021 one by one. It should be noted that, in the embodiment of the present invention, the arrangement direction of the plurality of second electrode stripes 1051 is parallel to the arrangement direction of the plurality of second electrochromic stripes 1021, and an orthogonal projection of each second electrode stripe 1051 on the substrate 00 coincides with an orthogonal projection of the corresponding second electrochromic stripe 1021 on the substrate 00. It should be further noted that fig. 3 schematically illustrates an example that the common electrode layer 104 includes a plate-shaped electrode, in other alternative implementations, the common electrode layer 104 may further include a plurality of strip-shaped electrodes, and the embodiment of the present invention is not limited herein.
In an embodiment of the invention, each second electrochromic strip 1021 is configured to switch between a light transmitting state and a light absorbing state under the control of the common electrode layer 104 and the corresponding second electrode strip 1051. For example, since a yellow material can absorb blue light, when the second electrochromic bar 1021 is in a light absorption state, the color of the second electrochromic bar 1021 is yellow; when the second electrochromic bar 1021 is in a transparent state, the color of the second electrochromic bar 1021 is colorless.
Optionally, the light adjusting film 100 may further include: the second insulating medium C2 located between two adjacent second electrochromic strips 1021 can prevent the second driving electrode layer 105 and the common electrode layer 104 from being shorted through the second insulating medium C2.
In both implementations, the second driving electrode layer 105 may be a transparent electrode, and the first driving motor layer 103 and the common electrode layer 104 may both be an indium tin oxide conductive layer or a polythiophene conductive layer, for example.
Optionally, as shown in fig. 2 or fig. 3, the light modulation film 100 may further include: a second ion conductor layer a2 and a second ion storage layer B2 located between the second drive electrode layer 105 and the second electrochromic layer 102, wherein the second ion conductor layer a2 is in contact with the second electrochromic layer 102 and the second ion storage layer B2 is in contact with the second drive electrode layer 104. It should be noted that, the materials and functions of the second ion conductor layer a2 and the materials and functions of the second ion storage layer B2 may refer to the description related to the first ion conductor layer a1 and the first ion storage layer B1 in the above embodiments, and are not repeated herein. The material of the second electrochromic layer 102 may be polyaniline, which is capable of changing color, i.e., from colorless to yellow, or from yellow to colorless, under the control of the common electrode layer 104 and the second drive electrode layer 105. For example, when a voltage of 0.2 v is applied to the second driving electrode layer 105 and a voltage of 0 v is applied to the common electrode layer 104, the color of polyaniline is yellow; when a voltage of-0.8 v was applied to the second driving electrode layer 105 and a voltage of 0 v was applied to the common electrode layer 104, the color of polyaniline was colorless.
It should be noted that the parallel arrangement of the plurality of stripe structures (e.g., the first electrochromic stripes 1011 or the first electrode stripes 1031, etc.) described in the above embodiments means that: the extending directions of any two of the plurality of strip-shaped structures are parallel, or the included angle between the extending directions of any two of the plurality of strip-shaped structures is smaller than a preset angle (for example, 5 °).
In summary, the light adjusting film provided in the embodiment of the present invention includes: a first electrochromic layer and a second electrochromic layer are disposed in a stack. The first electrochromic layer is provided with first color changing regions and first non-color changing regions which are alternately arranged, and the first color changing regions have a light transmitting state and a light shading state; the second electrochromic layer has a second color shifting region having a light transmitting state and a light absorbing state. When the light modulation film is arranged between a display panel and a backlight module in a display device, if a first color changing area in a first electrochromic layer is converted from a light transmitting state to a light shading state, the light modulation film can form light shading areas and light transmitting areas which are alternately arranged, so that the visual angle range of the display device is reduced, and the display device can realize a peep-proof function; if the second color-changing area in the second electrochromic layer is changed into the extinction state by the printing opacity state, this light modulation membrane can form the blue light in the light of backlight unit outgoing, has reduced display device and has caused the probability of damage to user's eyes to make this display device possess the eyeshield function.
An embodiment of the present invention provides a display device, where the display device may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame or a navigator, etc. Referring to fig. 4, fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention. The display device may include: the display device comprises a display panel 200, a backlight module 300 positioned on the non-display side of the display panel 200, and a light adjusting film positioned between the display panel 200 and the backlight module 300. The display panel 200 may be a liquid crystal display panel. The light adjusting film 100 can be as shown in fig. 1, fig. 2, or fig. 3.
Referring to fig. 5, fig. 5 is a flowchart of a manufacturing method of a light modulation film according to an embodiment of the present invention. The method for manufacturing the light-adjusting film is used for preparing the light-adjusting film shown in fig. 2 or fig. 3. The method for manufacturing the light adjusting film may include:
In the embodiment of the present invention, the substrate may be a substrate on a side of the backlight module close to the display panel, or a substrate on a side of the display panel close to the backlight module.
Optionally, the first driving electrode layer may be made of a transparent conductive material such as an indium tin oxide conductive layer or polythiophene; the material of the first ion storage layer may be an inorganic solid lithium salt; the material of the first ion-conducting layer may be tungsten trioxide; the material of the first electrochromic layer may be iridium oxide.
For example, the first driving electrode layer with the plurality of first driving electrode stripes may be formed on the substrate by any one of a plurality of deposition, coating, sputtering, and the like, and a patterning process may be performed on the first driving electrode layer.
Thereafter, the first ion storage layer and the first ion conductor layer may be sequentially formed on the first driving electrode layer by any of various means such as deposition, coating, sputtering, and the like.
Finally, a first electrochromic material layer may be formed on the first ion conductor layer by any one of a plurality of methods, such as deposition, coating, sputtering, and the like, and a patterning process may be performed on the first electrochromic material layer to form a first electrochromic layer with a plurality of first electrochromic stripes.
It should be noted that the one-time patterning process in the above embodiment may include: photoresist coating, exposure, development, etching and photoresist stripping.
It should be further noted that after the first electrochromic layer is formed, a first insulating medium may be filled between two adjacent first electrochromic strips.
Optionally, the common electrode layer may be made of a transparent conductive material such as an indium tin oxide conductive layer or polythiophene.
For example, the common electrode layer may be formed on the first electrochromic layer by any one of various methods such as over-deposition, coating, sputtering, and the like.
Optionally, the second driving electrode layer may be made of a transparent conductive material such as an indium tin oxide conductive layer or polythiophene; the material of the second ion storage layer can be an electrodeless solid lithium salt; the material of the second ion conducting layer can be tungsten trioxide; the material of the second electrochromic layer may be polyaniline.
In the first implementation manner, when it is necessary to form the light modulation film shown in fig. 2, the second electrochromic layer may be formed on the common electrode by any one of a plurality of manners such as deposition, coating, sputtering, and the like.
Thereafter, a second ion conductor layer and a second ion storage layer may be sequentially formed on the second electrochromic layer by any of a variety of means such as deposition, coating, sputtering, and the like.
Finally, the second driving electrode layer may be formed on the second ion storage layer by any one of a variety of means such as deposition, coating, sputtering, and the like.
In a second implementation manner, when it is required to form the light modulation film shown in fig. 3, a second electrochromic layer with a plurality of second electrochromic bars may be formed on the common electrode by any one of a plurality of manners such as deposition, coating, sputtering, and the like, and a patterning process is performed on the second electrochromic layer once.
Thereafter, a second ion conductor layer and a second ion storage layer may be sequentially formed on the second electrochromic layer by any of a variety of means such as deposition, coating, sputtering, and the like.
Finally, a second driving electrode material layer can be formed on the second ion storage layer in any one of a plurality of manners such as deposition, coating, sputtering and the like, and a composition process is performed on the second driving electrode material layer by layer to form a second driving motor layer with a plurality of second driving electrode strips.
It should be noted that the one-time patterning process in the above embodiment may include: photoresist coating, exposure, development, etching and photoresist stripping.
It should be further noted that after the second electrochromic layer is formed, a second insulating medium may be filled between two adjacent second electrochromic strips.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific principle of the light modulation film described above can refer to the corresponding content in the foregoing embodiments of the structure of the light modulation film, and will not be described herein again.
The embodiment of the invention also provides a control method of the display device, and the control method is applied to the display device shown in the figure 4. The control method may include: when the display device is in the peep-proof display mode, the first color changing region of the first electrochromic layer is controlled to be converted from a light transmitting state to a light shading state, and the dimming film forms light shading regions and light transmitting regions which are alternately arranged; when the display device is in an eye protection display mode, the second color changing area of the second electrochromic layer is controlled to be converted from a light transmitting state to a light absorbing state, so that the light adjusting film can absorb blue light in light emitted by the backlight source.
In the embodiment of the present invention, the control method may further include: when the display device is in the shared display mode, the first color changing region of the first electrochromic layer is controlled to be converted from a shading state to a light transmitting state, so that any region in the light adjusting film is the light transmitting region.
The control method may further include: when the display device is in the non-eye-protection display mode, the second color changing region of the second electrochromic layer is controlled to be converted from a light absorption state to a light transmission state, so that blue light in light emitted by the backlight source cannot be absorbed in the light adjusting film.
The control method may further include: when display device is in peep-proof display mode and is in eyeshield display mode, the first colour-changing district of control first electrochromic layer is changed into the shading state by the printing opacity state, makes the membrane of adjusting luminance form shading district and the printing opacity district of arranging in turn to the second colour-changing district of control second electrochromic layer is changed into the extinction state by the printing opacity state, makes the membrane of adjusting luminance can absorb the blue light in the light of backlight outgoing.
Referring to fig. 6, fig. 6 is a flowchart illustrating a control method of a display device in a peep-proof display mode according to an embodiment of the present invention. The control method is applied to the display device shown in fig. 4, and the light adjusting film in the display device is the light adjusting film shown in fig. 2 or fig. 3. Assuming that both the first color-changing region and the second color-changing region in the light adjusting film in the initial display device are in a light transmitting state, the control method may include:
In the embodiment of the invention, the display device is provided with a first button which is used for triggering the display device to be in the peep-proof display mode, and after a user triggers the first button, the display device can receive a first instruction which is used for indicating that the display device is in the peep-proof display mode. The display device may apply a first voltage to the first electrode bar and a common voltage to the common electrode layer based on the first instruction, so that the corresponding first electrochromic bar is converted from a transparent state to a dark state. Thereby the dimming film forms a shading area and a light transmitting area which are alternately arranged. Alternatively, the first voltage may be 1.6 volts and the common voltage may be 0 volts.
Optionally, the first instruction carries width information for indicating a width of a light-transmitting area to be formed by the light adjusting film, and/or area information for indicating an area in a display area of the display panel, where peep-proof display is required. At this time, the step 601 may include the following sub-steps:
sub-step 6011, determining a plurality of target first electrode stripes in the first driving electrode layer based on the width information and/or the region information carried by the first command.
In the embodiment of the present invention, the display device may determine the plurality of target first electrode stripes in the first driving electrode layer based on the width information and/or the area information carried by the first instruction.
As shown in fig. 7, fig. 7 is a top view of a light modulation film according to an embodiment of the present invention, and it is assumed that a width of each first electrochromic bar in the first electrochromic layer 101 is a, and a width between any two adjacent first electrochromic bars is b. The embodiment of the present invention is schematically illustrated by taking the following four cases as examples:
in the first case, if the width information carried in the first instruction is: for indicating the width b of the light-transmitting area to be formed by the light adjusting film, the display device can output a plurality of target first electrode stripes in the first driving electrode layer (not shown in fig. 7) as: electrode strips 1, 2, 3, 4 and 5.
In the second case, if the width information carried in the first instruction is: the width of the light-transmitting region to be formed for indicating the light adjusting film is 2b + a, and the display device can output a plurality of target first electrode stripes in the first driving electrode layer as: electrode strips 1, 3 and 5.
In a third case, if the area information carried in the first instruction is: the area for indicating that the display area of the display panel needs to perform the peep-proof display is a, and then the display device may output a plurality of target first electrode bars in the first driving electrode layer as: electrode strips 1, 2 and 3.
In a fourth case, if the area information carried in the first command is: the area used for indicating that peep-proof display is needed in the display area of the display panel is A, and the width information carried in the first instruction is as follows: the width of the light-transmitting region to be formed for indicating the light adjusting film is 2b + a, and the display device can output a plurality of target first electrode stripes in the first driving electrode layer as: electrode strips 1 and 3.
Sub-step 6012, a first voltage is applied to each target first electrode bar, and a common voltage is applied to the common electrode layer, so that the first electrochromic bar corresponding to the target first electrode bar is converted from a transparent state to a dark state.
In the embodiment of the present invention, the display device may apply a first voltage to each target first electrode bar, and apply a common voltage to the common electrode layer, so that the first electrochromic bars corresponding to the first electrode bars are changed from a transparent state to a dark state, and further, the light modulation film forms the light transmission areas and the light shielding areas which are alternately arranged.
For example, in the first case, the light-adjusting film is formed with the light-transmitting regions and the light-shielding regions alternately arranged as shown in fig. 8, wherein each light-shielding region in the light-adjusting film has a width of b and each light-transmitting region has a width of a; for the second case, the light-adjusting film is formed with the light-transmitting regions and the light-shielding regions alternately arranged as shown in fig. 9, wherein the width of each light-shielding region in the light-adjusting film is b, and the width of each light-transmitting region is 2b + a; for the third case, the light adjusting film can form the light transmitting areas and the light shielding areas alternately arranged in the area a, and the areas except the area a in the light adjusting film are the light transmitting areas, as shown in fig. 10.
In the embodiment of the invention, the area information is carried in the first instruction, so that when the display device is in the peep-proof display mode, the peep-proof display can be carried out in a certain display area in the display panel; carry width information through in first instruction, when can realizing that display device is in peep-proof display mode, display device has different visual angle. Thereby effectively improving the flexibility of the display device.
In the embodiment of the invention, the display device is provided with a second button which is used for triggering the display device and is in the eye protection display mode, and after a user triggers the second button, the display device can receive a second instruction which is used for indicating that the display device is in the eye protection display mode. The display device may apply a second voltage to the second driving electrode layer and a common voltage to the common electrode layer based on the second instruction, so that the second color changing region of the second electrochromic layer is converted from a light transmitting state to a light absorbing state. Alternatively, the second voltage may be 0.2 volts.
In the embodiment of the present invention, the display device has a third button for triggering the display device to be in the shared display mode, and after the third button is triggered by the user, the display device may receive a third instruction for indicating that the display device is in the shared display mode. The display device may apply a third voltage to each first electrode stripe of the first driving electrode layer and a common voltage to the common electrode layer based on the third instruction, so that the corresponding first electrochromic stripe is changed from the light-shielding state to the light-transmitting state. Alternatively, the third voltage may be-1.1 volts.
It should be noted that, in sub-step 6012, the display device may apply a third voltage to each of the first electrodes except for the target first electrode in the first driving electrode layer, so that the first electrochromic region corresponding to each of the first electrodes except for the target first electrode is in a light-transmitting state.
And step 604, after receiving a fourth instruction for indicating that the display device is in the non-eye-protection display mode, applying a fourth voltage to the second driving electrode layer based on the fourth instruction, and applying a common voltage to the common electrode layer to convert the second color-changing region of the second electrochromic layer from a light-absorbing state to a light-transmitting state.
In an embodiment of the present invention, the display device has a fourth button for triggering the display device to be in the non-eye-protection display mode, and after the fourth button is triggered by the user, the display device may receive a fourth instruction for indicating that the display device is in the non-eye-protection display mode. The display device may apply a fourth voltage to the second driving electrode layer and a common voltage to the common electrode layer based on the fourth instruction, so that the second color changing region of the second electrochromic layer is changed from the light absorbing state to the light transmitting state. Alternatively, the third voltage may be-0.8 volts.
It should be noted that, the order of the steps of the control method provided in the embodiment of the present application may be appropriately adjusted, and the steps may also be increased or decreased according to the circumstances, and any method that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application, and therefore, the details are not described again.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific principle of the light modulation film described above can refer to the corresponding content in the foregoing embodiments of the structure of the light modulation film, and will not be described herein again.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or there can be more than one intermediate layer or element. Like reference numerals refer to like elements throughout.
In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A light modulating film, said light modulating film being on a substrate, said light modulating film comprising:
the display device comprises a first electrochromic layer and a second electrochromic layer which are stacked, wherein the first electrochromic layer is provided with a first color changing region and a first non-color changing region which are alternately arranged, the second electrochromic layer is provided with a second color changing region, the first color changing region is in a light transmitting state and a light shading state, the second color changing region is in a light transmitting state and a light absorbing state, and the orthographic projection of the second color changing region on a substrate covers the orthographic projection of the first non-color changing region on the substrate;
wherein the second color shifting region is configured to absorb blue light when in the absorbed state.
2. The light modulating film of claim 1, wherein the first electrochromic layer comprises: the electrochromic device comprises a plurality of first electrochromic strips arranged in parallel, wherein the area where the first electrochromic strips are located is a first electrochromic region, and the area between two adjacent first electrochromic strips is a first non-electrochromic region;
the light adjusting film further comprises: first drive electrode layer and public electrode layer, first electrochromic layer is located first drive electrode layer with between the public electrode layer, first drive electrode layer or public electrode layer is located first electrochromic layer with between the second electrochromic layer, first drive electrode layer includes: the first electrode strips are arranged in parallel and correspond to the first electrochromic strips one by one;
each of the first electrochromic stripes is configured to switch between the light-transmissive state and the light-blocking state under control of the common electrode layer and the corresponding first electrode stripe.
3. The light-adjusting film according to claim 2, wherein the second electrochromic layer is a plate-like electrochromic layer, and the region where the second electrochromic layer is located is the second color-changing region;
the light adjusting film further comprises: a second drive electrode layer, the second electrochromic layer being located between the common electrode layer and the second drive electrode layer, the common electrode layer and the second drive electrode layer each comprising a plate electrode;
the second electrochromic layer is configured to switch between the light-transmitting state and the light-absorbing state under control of the common electrode layer and the second drive electrode layer.
4. The light modulating film of claim 2, wherein the second electrochromic layer further has second non-color-changing regions, the second color-changing regions alternating with the second non-color-changing regions.
5. The light modulating film of claim 4, wherein the second electrochromic layer comprises: a plurality of second electrochromic strips arranged in parallel, wherein the area where the second electrochromic strip is located is the second electrochromic region, and the area between two adjacent second electrochromic strips is the second non-electrochromic region;
the light adjusting film further comprises: a second drive electrode layer, the second electrochromic layer located between the common electrode layer and the second drive electrode layer, the second drive electrode layer comprising: the second electrode strips are arranged in parallel and correspond to the second electrochromic strips one by one;
each of the second electrochromic strips is configured to switch between the light-transmitting state and the light-absorbing state under control of the common electrode layer and the corresponding second electrode strip.
6. A display device, comprising: the display device comprises a display panel, a backlight module positioned on the non-display side of the display panel, and a light adjusting film positioned between the display panel and the backlight module, wherein the light adjusting film is the light adjusting film in any one of claims 1 to 5.
7. A control method of a display device, applied to the display device according to claim 6, the method comprising:
when the display device is in the peep-proof display mode, the first color changing region of the first electrochromic layer is controlled to be converted from a light transmitting state to a light shielding state, so that the light adjusting film forms light shielding regions and light transmitting regions which are alternately arranged;
when the display device is in an eye protection display mode, the second color changing region of the second electrochromic layer is controlled to be converted from a light transmitting state to a light absorbing state, so that the light adjusting film can absorb blue light in light emitted by the backlight source.
8. The method of claim 7, wherein the first electrochromic layer comprises: the electrochromic device comprises a plurality of first electrochromic strips arranged in parallel, wherein the area where the first electrochromic strips are located is a first electrochromic region, and the area between two adjacent first electrochromic strips is a first non-electrochromic region; the light adjusting film further comprises: first drive electrode layer and public electrode layer, first electrochromic layer is located first drive electrode layer with between the public electrode layer, first drive electrode layer or public electrode layer is located first electrochromic layer with between the second electrochromic layer, first drive electrode layer includes: the first electrode strips are arranged in parallel and correspond to the first electrochromic strips one by one;
when the display device is in a peep-proof display mode, controlling the first color-changing region of the first electrochromic layer to be converted from a light-transmitting state to a light-shielding state, including:
after a first instruction used for indicating that the display device is in a peep-proof display mode is received, based on the first instruction, a first voltage is applied to the first electrode bar, a common voltage is applied to the common electrode layer, and the corresponding first electrochromic bar is converted into a dark color state from a transparent state.
9. The method according to claim 8, wherein the first instruction carries width information indicating a width of a light-transmitting area to be formed by the light adjusting film, and/or area information indicating an area in which a privacy display is required in a display area of the display panel;
based on the first instruction, applying a first voltage to the first electrode bar and applying a common voltage to the common electrode layer to convert the corresponding first electrochromic bar from a transparent state to a dark state includes:
determining a plurality of target first electrode stripes in the first driving electrode layer based on the carried width information and/or area information of the first instruction;
and applying a first voltage to each target first electrode bar and applying a common voltage to the common electrode layer to convert the first electrochromic bars corresponding to the target first electrode bars from a transparent state to a dark state.
10. The method of claim 8, wherein the light modulating film further comprises: a second drive electrode layer, the second electrochromic layer being located between the common electrode layer and the second drive electrode layer;
when the display device is in the eyeshield display mode, control the second color-changing area of second electrochromic layer is changed into the extinction state by the printing opacity state, include:
after receiving a second instruction for indicating that the display device is in an eye protection display mode, applying a second voltage to the second driving electrode layer and applying a common voltage to the common electrode layer based on the second instruction, so that the second color-changing region of the second electrochromic layer is converted from a light-transmitting state to a light-absorbing state.
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