CN110618560A - Display device and display method - Google Patents
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- CN110618560A CN110618560A CN201910912368.8A CN201910912368A CN110618560A CN 110618560 A CN110618560 A CN 110618560A CN 201910912368 A CN201910912368 A CN 201910912368A CN 110618560 A CN110618560 A CN 110618560A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
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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
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The invention provides a display device and a display method. The display device comprises a light source component and a plurality of color sub-pixels; the sub-pixels comprise first fiber gratings and a period adjusting component, the period adjusting component is used for adjusting grating periods corresponding to the first fiber gratings, and the light source component is used for providing incident light with corresponding colors for the first ends of the first fiber gratings of each sub-pixel; and emergent light at the second end of the first fiber bragg grating is emergent light of the corresponding sub-pixel. The display device realizes gray scale control of the sub-pixels.
Description
Technical Field
The present invention relates to a display device and a display method, and more particularly to a display device and a display method.
Background
Conventional display devices generally include liquid crystal display devices and light emitting diode display devices. In the liquid crystal display device, the change of the voltage difference between the pixel electrode and the common electrode causes the change of the state of liquid crystal molecules between the pixel electrode and the common electrode, thereby causing the change of the polarization direction of light, and combining the selection of the polarizer to the polarization direction of the light, thereby realizing different gray scales. In the light emitting diode display device, different gray scales are realized by controlling the current of the light emitting diode. The display principle of the existing display device is limited, and a display device providing more new display principles is required.
Disclosure of Invention
The invention provides a novel display device and a display method, which are used for realizing gray scale control.
According to a first aspect of the present invention, there is provided a display device comprising a light source assembly, a plurality of color sub-pixels; the sub-pixels comprise first fiber gratings and a period adjusting component, the period adjusting component is used for adjusting grating periods corresponding to the first fiber gratings, and the light source component is used for providing incident light with corresponding colors for the first ends of the first fiber gratings of each sub-pixel; and emergent light at the second end of the first fiber bragg grating is emergent light of the corresponding sub-pixel.
Optionally, the period adjustment assembly includes a magnetostrictive material layer coated on a side surface of the corresponding first fiber grating and a coil surrounding the magnetostrictive material layer.
Optionally, the material of the magnetostrictive material layer comprises: Terfenol-D.
Optionally, the cycle adjusting assembly further includes a shield located on one side of the outer surface of the coil, and an insulating layer located between the shield and the coil, and the material of the shield includes a ferromagnetic material.
Optionally, the display device further includes a control module, connected to the coil, for controlling the magnitude of the current in the coil.
Optionally, the light source assembly comprises a light emitting element, a first coupler, a plurality of color filter elements, a plurality of second couplers; the light emitted by the light emitting component comprises light of the light emitting color of each sub-pixel; the first coupler is used for dividing the light emitted by the light-emitting part into a plurality of parts, wherein each part of the light emitted corresponds to a light filtering element; each filter element allows the color of the transmitted light to correspond to the light emitting color of the sub-pixel of one color, and each sub-pixel of each color has a filter element of the corresponding color; each second coupler is connected with one filter element and is used for equally dividing the light emitted by the corresponding filter element into multiple parts, and each part of the light emitted is provided for the first fiber bragg grating of the sub-pixel with the corresponding color.
Optionally, the multi-color filter element comprises a second fiber grating of a corresponding color.
Optionally, the sub-pixels of the plurality of colors include: red, green and blue sub-pixels.
According to a second aspect of the present invention, there is provided a display method, which is applied to the display device of the first aspect of the present invention, the display method comprising: the grating period of the first fiber grating is adjusted so that the first fiber grating allows the center wavelength of the transmitted light to have a different interval from the center wavelength of the light incident on the first fiber grating.
Optionally, the grating period of the first fiber grating is achieved by varying the magnitude of the current in the coil.
Drawings
Fig. 1 is a schematic diagram of an optical path of a display device of an embodiment of the present invention;
fig. 2a and 2b are schematic structural diagrams of a sub-pixel in a display device according to an embodiment of the present invention;
fig. 3 is an overall external view of a display device of an embodiment of the present invention;
FIGS. 4 a-4 e are schematic diagrams illustrating different gray levels of a display device according to an embodiment of the present invention;
wherein the reference numerals are: 1. a light source assembly; 10. a light emitting member; 11. a first coupler; 12R, a red filter element; 12G, green filter element; 12B, a blue filter element; 13. a second coupler; 2R, red subpixel; 2G, green sub-pixel; 2B, blue sub-pixel; 21. a first fiber grating; 22. a layer of magnetostrictive material; 23. a shield; 24. a coil; 25. a wire; 26 and 27, transmission grating; 200. a display area; 100. a base.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1, fig. 2a, fig. 2b and fig. 3, an embodiment of the present invention provides a display device, including a light source module 1, a plurality of color sub-pixels; the sub-pixels comprise first fiber gratings 21 and a period adjusting component, the period adjusting component is used for adjusting the grating period corresponding to the first fiber gratings 21, and the light source component 1 is used for providing incident light with corresponding color for the first end of the first fiber grating 21 of each sub-pixel; the emergent light from the second end of the first fiber grating 21 is the emergent light of the corresponding sub-pixel.
Hereinafter, the sub-pixels of a plurality of colors are described as an example in which the red sub-pixel 2R, the green sub-pixel 2G, and the blue sub-pixel 2B are included. The light source assembly 1 provides each sub-pixel with incident light of a corresponding color (indicated by the lower arrows in fig. 2a and 2 b). The light source module 1 functions similarly to a backlight in a liquid crystal display device, except that the color of light supplied to each sub-pixel by the light source module 1 is identical to the emission color of the sub-pixels. According to the current view of fig. 2a, the lower end of the first fiber grating 21 is the first end thereof, and the upper end of the first fiber grating 21 is the second end thereof. In the embodiment shown in fig. 2a, the incident light from the first fiber grating 21 is incident through the transmission grating 26 and then exits through the transmission grating 27.
The grating period of the first fiber grating 21 is controlled by the period adjustment component, that is, the position of the center wavelength of the light allowed to pass through by the first fiber grating 21 (of course, the transmittance of the first fiber grating 21 to light of different wavelengths) is controllable. The center wavelength of the incident light provided by the light source module 1 to each first fiber grating 21 (or the light intensity of the incident light provided to each first fiber grating 21 as a function of wavelength) is determined. It is easily understood that even light of the same color exists in a certain wavelength range and the intensities of light of different wavelengths have a certain distribution rule. Obviously, as the position of the center wavelength of the light allowed to pass through by the first fiber grating 21 changes, the total light intensity of the light allowed to pass through by the first fiber grating 21 also changes, thereby realizing control of different gray scales.
Specifically, the fiber grating is a phase grating in a permanent space formed by writing an incident light coherent field pattern into a fiber core by using the photosensitivity of a fiber grating material through an ultraviolet light exposure method and generating a periodic variation of a refractive index in the axial direction of the fiber core in the fiber core. The effect is essentially to form a narrow band transmission filter within the core. When one beam of light passes through the fiber grating, the wavelength meeting the fiber grating Bragg condition is transmitted and continues to move along the fiber grating, and the light with the rest wavelengths is reflected back, which is the filtering action of the fiber grating. Since the transmitted light wave is only a part of the original light, the light intensity of the original transmitted light is reduced, which is the principle of the fiber grating changing the light intensity. As known from the working principle of the fiber grating, when the fiber grating is deformed (e.g., stretched), the wavelength threshold (the central wavelength of light satisfying the bragg condition of the fiber grating) transmitted by the fiber grating changes. In this way, the fiber grating can be controlled to achieve different transmittances for the same incident light.
Further, there is little loss of light due to the first fiber grating 21 other than the filtering effect. Further, the loss of the transmission light rays 26 and 27 to light is almost 0, and the display device has high light utilization efficiency and high luminance.
Alternatively, referring to fig. 2a and 2b, the period adjustment member includes a magnetostrictive material layer 22 coated on a side surface of the corresponding first fiber grating 21 and a coil 24 surrounding the magnetostrictive material layer 22. Energization of the coil 24 generates a magnetic field in a direction corresponding to the axial direction of the first fiber grating 21. The strength of this magnetic field is controlled by the magnitude of the current in the coil 24. The material in the layer of magnetostrictive material 22 is a magnetostrictive material such as Terfenol-D. The magnetostrictive material changes its length in the axial direction of the first fiber grating 21 under the action of a magnetic field in the axial direction of the first fiber grating 21, and this phenomenon is called a magnetostrictive effect. The magnetostrictive material is coated on the side surface of the first fiber grating 21, so that the controlled expansion and contraction of the magnetostrictive material drives the first fiber grating 21 to controllably expand and contract along the axial direction of the first fiber grating, thereby causing the controlled change of the grating period of the first fiber grating 21, and realizing the change of the central wavelength of the light allowed to transmit by the first fiber grating 21.
Of course, the manner of achieving the controlled expansion and contraction of the first fiber grating 21 is not limited thereto. For example, a person skilled in the art may also fixedly connect the piezoelectric material to two ends of the first fiber grating 21, and the controlled expansion and contraction of the first fiber grating 21 is driven by the piezoelectric material having different deformations when subjected to different voltages. Or a person skilled in the art may also use micro-electro-mechanical systems (MEMS) to achieve a controlled stretching of the first fiber grating 21. However, it is obvious that the control of the deformation of the first fiber grating 21 is easier to achieve in the embodiment shown in fig. 2 a.
Optionally, the period adjustment assembly further comprises a shield 23 located on one side of the outer surface of the coil 24, an insulating layer (not shown) located between the shield 23 and the coil 24, the material of the shield 23 comprising a ferromagnetic material. The shield 23 functions to prevent interference of an external magnetic field with the magnetostrictive material layer 22. The insulating layer functions to prevent the shield 23 from being charged.
Optionally, the display device further comprises a control module (not shown) connected to the coil 24 for controlling the magnitude of the current in the coil 24. In particular, the control module is connected to the corresponding coil 24 by a wire 25.
Optionally, the light source assembly 1 comprises a light emitting element 10, a first coupler 11, a plurality of color filter elements, a plurality of second couplers 13; the light emitted from the light emitting element 10 includes light of the light emission color of each sub-pixel; the first coupler 11 is used for dividing the light emitted from the light-emitting member 10 into a plurality of parts (preferably equal parts), wherein each part of the light is corresponding to a filter element; each filter element allows the color of the transmitted light to correspond to the light emitting color of the sub-pixel of one color, and each sub-pixel of each color has a filter element of the corresponding color; each second coupler 13 is connected to a filter element, and the second coupler 13 is configured to equally divide the light emitted from the corresponding filter element into multiple parts, each part of the light emitted from the corresponding filter element being provided to the first fiber grating 21 of a sub-pixel of a corresponding color.
The light emitted from the light emitting member 10 is a wide spectrum light, for example, white light including three colors of red, green and blue. In the embodiment shown in fig. 1, the first coupler 11 divides light emitted from the light emitting member 10 into 3 parts, and supplies the 3 parts to the red filter element 12R, the green filter element 12G, and the blue filter element 12B, respectively. Of course, the first coupler 11 may divide the light emitted from the light emitting member 10 into 6 parts, and provide the divided light to the two red filter elements 12R, the two green filter elements 12G, and the two blue filter elements 12B. The red filter element 12R allows red light to pass therethrough and has a certain center wavelength. Other color filter devices and so on. The second coupler 13 connected to the red filter element 12R divides the red light transmitted through the red filter element 12R equally into a plurality of portions, each of which is provided to the first fiber grating 21 of one of the red color sub-pixels (for example, by the transmission grating 26).
It should be noted that a plurality of the above-mentioned white light-emitting elements 10 may also be disposed in the light source assembly 1, and each of the light-emitting elements 10 is responsible for providing a light source for the sub-pixels in a part of the area of the display device.
Optionally, the multi-color filter element comprises a second fiber grating of a corresponding color. The red filter element 12R is constituted by a second fiber grating that allows red light to pass therethrough, for example. The second fiber grating acts as a filter, the filter characteristic of which is fixed.
In this embodiment, the entire set of optical systems is made up of optical fibers. There is little other loss of light except for the filtering effect of the first fiber grating 21 and the second fiber grating, so that the brightness of the display device is high and the light transmittance is high.
Of course, the above second fiber grating can be replaced by a filter film with different colors (e.g. a color filter film used in a liquid crystal display device). Obviously, the connection of these filter membranes to the second coupler 13 is not as good as the second fiber grating.
It should be noted that the above light emitting element 10, the first coupler 11 and the three-color second fiber grating may be replaced by three light emitting elements emitting red light, green light and blue light, respectively. Of course, the ratio of the first coupler 11 to the light split off is determined, for example, by 3. In addition, the filter characteristic of the second fiber grating is also fixed. So that the proportion of incident light provided to each second coupler 13 is fixed. Therefore, the debugging of the gray scales of the sub-pixels with different colors is facilitated. The characteristics of the light emitted by the three independent light-emitting elements with different colors have certain fluctuation, so that the debugging workload of the subsequent gray scale of the whole machine is larger.
Fig. 3 provides a possible spatial layout of the display device. The base 100 may be provided with the control module and some of the elements of the light source assembly 1 (including the light emitting member 10). Since the sub-pixels in the display area 200 are mainly made of optical fiber material, the display area 200 does not need a substrate material such as glass, and only needs to fix the sub-pixels together by a material such as glue. So that the shape of the display area 200 can be arbitrarily adjusted. Because the light source assembly 1 and the display area 200 are separately arranged, the light source assembly 1 can be cooled by the cooling device, so that the influence of the temperature on the magnetic field in the display area 200 is avoided.
The embodiment of the invention also provides a display method which is applied to the display device. The display method comprises the following steps: the grating period of the first fiber grating 21 is adjusted so that the first fiber grating 21 allows the center wavelength of light to be transmitted with a different pitch from the center wavelength of light incident to the first fiber grating 21.
Taking the red sub-pixel 2R as an example, referring to fig. 4a, the light emitting member 10 emits a broad spectrum light. The second fiber grating 12R, red in FIG. 4b, filters the light emitted by the luminescent member 10 only for the wavelength λ1The nearby red light can pass through. Wavelength lambda1The nearby red light passes through the second coupler 13 and the transmission fiber 26 to reach the red sub-pixel 2R. The first fiber grating 21 in the red sub-pixel 2R itself has a threshold wavelength λ0(satisfying the fiber Bragg Grating ConditionAnd in the red band). The overlap areas shown in fig. 4 c-4 e can be expressed as the intensity of the transmitted light. As shown in fig. 4c, when the center wavelength is λ1Red light spectrum and threshold wavelength lambda of0When the curves overlap a part, the red light only transmits a part at the time. As shown in fig. 4e, when the center wavelength λ1Threshold wavelength λ0At a center wavelength of λ1Red light spectrum and threshold wavelength lambda of0The curve overlapping area reaches the maximum, the transmitted light intensity is the maximum, and the sub-pixel is the brightest. As shown in fig. 4d, when the center wavelength is λ1Red light spectrum and threshold wavelength lambda of0The curves are completely staggered, the overlapping area of the curves is zero, the transmitted light intensity is minimum, and the red sub-pixel is darkest.
Alternatively, in the above-described embodiment in which the expansion and contraction of the first fiber grating 21 are changed by the coil 24, the grating period of the first fiber grating 21 is realized by changing the magnitude of the current in the coil 24. Namely, the magnitude of the current in the coil 24 is adjusted to change the magnitude of the magnetic field, thereby changing the deformation of the first fiber grating 21 and further changing the threshold wavelength λ of the first fiber grating 210Thereby controlling the intensity of the light passing through the first fiber grating 21 to realize the bright and dark gray scale modulation of the picture.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A display device is characterized by comprising a light source component, a plurality of color sub-pixels; the sub-pixels comprise first fiber gratings and a period adjusting component, the period adjusting component is used for adjusting grating periods corresponding to the first fiber gratings, and the light source component is used for providing incident light with corresponding colors for the first ends of the first fiber gratings of each sub-pixel; and emergent light at the second end of the first fiber bragg grating is emergent light of the corresponding sub-pixel.
2. The display device of claim 1, wherein the period adjustment member comprises a magnetostrictive material layer coated on a side surface of the corresponding first fiber grating and a coil surrounding the magnetostrictive material layer.
3. The display device according to claim 2, wherein the material of the magnetostrictive material layer comprises: Terfenol-D.
4. The display device according to claim 2, wherein the period adjustment assembly further comprises a shield on a side of the outer surface of the coil, an insulating layer between the shield and the coil, and a material of the shield comprises a ferromagnetic material.
5. The display device according to claim 4, further comprising a control module connected to the coil for controlling the magnitude of the current in the coil.
6. The display device of claim 1, wherein the light source assembly comprises a light emitting element, a first coupler, a plurality of color filter elements, a plurality of second couplers; the light emitted by the light emitting component comprises light of the light emitting color of each sub-pixel; the first coupler is used for dividing the light emitted by the light-emitting part into a plurality of parts, wherein each part of the light emitted corresponds to a light filtering element; each filter element allows the color of the transmitted light to correspond to the light emitting color of the sub-pixel of one color, and each sub-pixel of each color has a filter element of the corresponding color; each second coupler is connected with one filter element and is used for equally dividing the light emitted by the corresponding filter element into multiple parts, and each part of the light emitted is provided for the first fiber bragg grating of the sub-pixel with the corresponding color.
7. The display device of claim 6, wherein the plurality of color filter elements comprises a second fiber grating of a corresponding color.
8. The display device according to claim 1, wherein the subpixels of the plurality of colors comprise: red, green and blue sub-pixels.
9. A display method applied to the display device according to any one of claims 1 to 8, the display method comprising: the grating period of the first fiber grating is adjusted so that the first fiber grating allows the center wavelength of the transmitted light to have a different interval from the center wavelength of the light incident on the first fiber grating.
10. The method according to claim 9, applied to the display device according to claim 4 or 5, wherein the grating period of the first fiber grating is realized by changing the magnitude of the current in the coil.
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| CN104752618A (en) * | 2013-12-25 | 2015-07-01 | 昆山国显光电有限公司 | Light-emitting display device and preparation method thereof |
| WO2019127808A1 (en) * | 2017-12-27 | 2019-07-04 | 武汉华星光电半导体显示技术有限公司 | Flexible display device and method for obtaining bending state information of flexible display panel |
| CN109103227A (en) * | 2018-08-22 | 2018-12-28 | 京东方科技集团股份有限公司 | A kind of OLED display unit, display panel and display device |
| CN109031703A (en) * | 2018-09-27 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of pixel unit, reflective display screen and preparation method thereof, display device |
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