CN114647113B - Display module and display device - Google Patents
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- CN114647113B CN114647113B CN202210276918.3A CN202210276918A CN114647113B CN 114647113 B CN114647113 B CN 114647113B CN 202210276918 A CN202210276918 A CN 202210276918A CN 114647113 B CN114647113 B CN 114647113B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 67
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 46
- 230000010287 polarization Effects 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims description 80
- 238000001228 spectrum Methods 0.000 claims description 17
- 230000003595 spectral effect Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 59
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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
- G02F1/133528—Polarisers
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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
- G02F1/133618—Illuminating devices for ambient light
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a display module and a display device, relates to the technical field of display, and aims to solve the problems of complex optical structure, high cost and the like of a reflective liquid crystal display. The display module includes: the upper polaroid, the display panel, the selective wavelength transmission film, the lower polaroid and the backlight source are sequentially arranged; the upper polarizer is provided with a first transmission axis and is used for generating polarized light with a polarization direction parallel to the first transmission axis; the display panel comprises a liquid crystal display panel; the lower polarizer is provided with a second light transmission axis and is used for generating polarized light with a polarization direction parallel to the second light transmission axis; the selective wavelength transmitting film is capable of transmitting a target light having a specific wavelength emitted from the backlight. The display module is used for displaying.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
The intelligent wearing and electronic price tag is an emerging market with huge potential, the intelligent wearing technology is developed rapidly, but because the equipment is smaller, the equipment is difficult to bear a battery with large capacity, and therefore, the reflective liquid crystal display (English: liquid Crystal Display, LCD for short) is widely applied to the intelligent wearing and electronic price tag market and has a wide prospect.
However, the reflective liquid crystal display has the problems of complex optical structure, high cost and the like.
Disclosure of Invention
The invention aims to provide a display module and a display device, which are used for solving the problems of complex optical structure, high cost and the like of a reflective liquid crystal display.
In order to achieve the above object, the present invention provides the following technical solutions:
a first aspect of the present invention provides a display module, including: the upper polaroid, the display panel, the selective wavelength transmission film, the lower polaroid and the backlight source are sequentially arranged;
the upper polarizer is provided with a first transmission axis and is used for generating polarized light with a polarization direction parallel to the first transmission axis; the display panel comprises a liquid crystal display panel; the lower polarizer is provided with a second light transmission axis and is used for generating polarized light with a polarization direction parallel to the second light transmission axis;
the selective wavelength transmitting film is capable of transmitting a target light having a specific wavelength emitted from the backlight.
Optionally, the selective wavelength transmissive film includes a plurality of first refractive index layers and a plurality of second refractive index layers; the first refractive index layers and the second refractive index layers are alternately arranged, the refractive index of the first refractive index layers is larger than that of the second refractive index layers, the first refractive index layers comprise anisotropic film layers, and the second refractive index layers comprise isotropic film layers.
Optionally, the backlight is further capable of emitting non-target light rays not having a specific wavelength, and the selective wavelength transmissive film is capable of blocking the non-target light rays from transmitting.
Optionally, the selective wavelength transmission film is divided into a plurality of groups of selective transmission structures arranged in sequence, and each selective transmission structure comprises at least one first refractive index layer and at least one second refractive index layer; each group of selectively transparent structures prevents transmission of non-target light of a corresponding wavelength.
Optionally, the wavelength of the target light includes a wavelength corresponding to a peak of a red light spectrum, a wavelength corresponding to a peak of a green light spectrum, and a wavelength corresponding to a peak of a blue light spectrum.
Optionally, the target light includes at least one of a first target light, a second target light, and a third target light;
the wavelength of the first target light is between 440nm and 460 nm;
the wavelength of the second target light is between 530nm and 550 nm;
the wavelength of the third target light is between 620nm and 640 nm.
Optionally, the selective wavelength transmitting film is capable of transmitting light having the same wavelength as the target light in the ambient light.
Optionally, the liquid crystal display panel includes an ADS panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer between the first substrate and the second substrate; the ADS panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same interval.
Optionally, the liquid crystal display panel includes a VA panel, the VA panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer between the first substrate and the second substrate; the VA panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same layer interval.
Optionally, the liquid crystal display panel includes a TN panel, the TN panel includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer between the first substrate and the second substrate; the TN panel includes first and second electrodes on the first and second substrates, respectively.
Optionally, the liquid crystal display panel includes an ECB panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer between the first substrate and the second substrate; the ECB panel includes first and second electrodes on the first and second substrates, respectively.
Based on the technical scheme of the display module, a second aspect of the invention provides a display device, which comprises the display module.
The technical scheme provided by the invention comprises an upper polaroid, a display panel, a selective wavelength transmission film, a lower polaroid and a backlight source which are sequentially arranged; the selective wavelength transmitting film can transmit target light rays with specific wavelengths emitted by the backlight source and can block non-target light rays without specific wavelengths emitted by the backlight source from transmitting. According to the technical scheme provided by the invention, the selective wavelength transmission film can transmit the target light with the wavelength range in the appointed wave band according to the actual requirement, and the wavelength range which can be transmitted and reflected by the selective wavelength transmission film can be controlled according to the actual requirement, so that the transmission and reflection functions of the display module are realized. According to the technical scheme provided by the invention, the transmission type display and the reflection type display can be realized only by arranging the selective wavelength transmission film, and the problems of complex optical structure, high cost and the like of the reflection type liquid crystal display are solved. In the technical scheme provided by the invention, under the environment with darker light, the brightness is provided by the backlight source, so that the transmission display is realized, and the display is in a normally black mode; in bright environments, the reflective display is realized by using the total reflection of ambient light, and the display is also in a normally black mode.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic view of a display module according to an embodiment of the present invention in a dark state;
fig. 2 is a schematic view of a display module in a bright state according to an embodiment of the present invention;
FIG. 3 is a dark state light path diagram of the display module provided by the embodiment of the invention in a reflection mode;
FIG. 4 is a diagram of a bright state light path of a display module in a reflective mode according to an embodiment of the present invention;
FIG. 5 is a dark state light path diagram of the display module provided by the embodiment of the invention in a transmission mode;
FIG. 6 is a diagram of a bright state light path of a display module in a transmissive mode according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first refractive index layer and a second refractive index layer according to an embodiment of the present invention;
FIG. 8 is a schematic view of refractive index of a first refractive index layer and a second refractive index layer according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a selective wavelength transmissive film according to an embodiment of the present invention;
FIG. 10 is a spectral diagram of a backlight and ambient light provided by an embodiment of the present invention;
FIG. 11 is a graph showing the spectrum of the backlight and ambient light after passing through the selective wavelength transmissive film according to an embodiment of the present invention.
Reference numerals:
10-upper polarizer, 11-display panel,
110-a liquid crystal layer, 12-a selective wavelength transmitting film,
121-first refractive index layer, 122-second refractive index layer,
123-substrate, 124-protective layer,
13 lower polarizer, 14-backlight.
Detailed Description
In order to further explain the display module and the display device provided by the embodiment of the invention, the following detailed description is provided with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a display module, including: an upper polarizer 10, a display panel 11, a selective wavelength transmissive film 12, a lower polarizer 13, and a backlight 14, which are sequentially disposed;
the upper polarizer 10 has a first transmission axis for generating polarized light having a polarization direction parallel to the first transmission axis; the display panel 11 includes a liquid crystal display panel 11; the lower polarizer 13 has a second transmission axis for generating polarized light having a polarization direction parallel to the second transmission axis;
the selective wavelength transmitting film 12 is capable of transmitting a target light having a specific wavelength emitted from the backlight 14.
Illustratively, the display module includes an upper polarizer 10 and a lower polarizer 13 disposed opposite to each other. The upper polarizer 10 is located on the light-emitting side of the display panel 11, and the upper polarizer 10 has a first light-transmitting axis for generating polarized light having a polarization direction parallel to the first light-transmitting axis. The lower polarizer 13 is located on the non-light-emitting side of the display panel 11, and the lower polarizer 13 has a second light transmission axis for generating polarized light having a polarization direction parallel to the second light transmission axis. The second light transmission axis is perpendicular to the first light transmission axis.
The display panel 11 includes, for example, but is not limited to, a liquid crystal display panel 11. The liquid crystal display panel 11 includes a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer 110 between the first substrate and the second substrate. The liquid crystal display panel 11 may adopt a conventional structure of the liquid crystal display panel 11.
Illustratively, the selective wavelength transmitting film 12 is capable of transmitting target light having a specific wavelength emitted by the backlight 14, while the selective wavelength transmitting film 12 is capable of blocking non-target light having no specific wavelength emitted by the backlight 14 from transmitting.
Illustratively, the backlight 14 is turned on when the display module is operating in the transmissive mode. When the display module is operated in the reflective mode, the backlight 14 is not turned on. The reflection direction of the selective wavelength transmitting film 12 is perpendicular to the first light transmission axis, and the transmission direction of the selective wavelength transmitting film 12 is parallel to the first light transmission axis
As shown in fig. 3 and fig. 4, when the display module works in the reflective mode, in the case of no power-up, the ambient light is linearly polarized after passing through the upper polarizer 10, is still linearly polarized after passing through the unpowered display panel 11, and then enters the selective wavelength transmitting film 12, at this time, the polarization direction of the linearly polarized light is parallel to the transmission direction of the selective wavelength transmitting film 12, the linearly polarized light enters the lower polarizer 13 through the selective wavelength transmitting film 12, and is absorbed by the lower polarizer 13, the light cannot return, and the display module is in a dark state. Under the condition of power-on, the ambient light is linearly polarized after passing through the upper polarizer 10, becomes linearly polarized with light polarization rotated by 90 degrees after passing through the power-on display panel 11, then enters the selective wavelength transmission film 12, and since the selective wavelength transmission film 12 has reflection characteristics on light perpendicular to the paper surface, the light is reflected by the selective wavelength transmission film 12 (does not enter the lower polarizer 13) back to the display panel 11, and still becomes the linearly polarized light of the ordinary paper surface when the light exits from the display panel 11, and finally the light exits through the upper polarizer 10, and the display module is in a bright state.
As shown in fig. 5 and fig. 6, when the display module works in the transmission mode, under the condition of no power-up, the target light emitted by the backlight source 14 is linear polarized light after passing through the film 12 through the selective wavelength, and then enters the display panel 11, the liquid crystal in the unpowered display panel 11 rotates to change the polarization direction to be absorbed by the upper polarizer 10, and the display module is in a dark state. Under the condition of power-on, the target light emitted by the backlight source 14 is linear polarized light after passing through the film 12 through selective wavelength, and then enters the display panel 11, the liquid crystal in the power-on display panel 11 changes the rotation direction of the linear polarized light, and the linear polarized light passes through the upper polarizer 10, so that the display module is in a bright state.
According to the specific structure of the display module, the display module provided by the embodiment of the invention comprises an upper polarizer 10, a display panel 11, a selective wavelength transmission film 12, a lower polarizer 13 and a backlight source 14 which are sequentially arranged; the selective wavelength transmitting film 12 is capable of transmitting a target light having a specific wavelength emitted from the backlight 14 and blocking a non-target light having no specific wavelength emitted from the backlight 14 from transmitting.
In the display module provided by the embodiment of the invention, the selective wavelength transmitting film 12 can transmit the target light with the wavelength range in the appointed wave band according to the actual requirement, and the wavelength range of the selective wavelength transmitting film 12 which can transmit and reflect can be controlled according to the actual requirement, so that the transmission and reflection functions of the display module are realized. The display module provided by the embodiment of the invention also realizes high-contrast and high-color-gamut display.
In the display module provided by the embodiment of the invention, the transmission type display and the reflection type display can be realized only by arranging the selective wavelength transmission film 12, and the problems of complex optical structure, high cost and the like of the reflection type liquid crystal display are solved.
In the display module provided by the embodiment of the invention, under the environment with darker light, the backlight source 14 provides brightness to realize transmission display, and the display module is in a normally black mode; in bright environments, the reflective display is realized by using the total reflection of ambient light, and the display is also in a normally black mode.
As shown in fig. 7-9, in some embodiments, the selective wavelength transmissive film 12 includes a plurality of first refractive index layers 121 and a plurality of second refractive index layers 122; the first refractive index layers 121 and the second refractive index layers 122 are alternately arranged, the refractive index of the first refractive index layers 121 is greater than the refractive index of the second refractive index layers 122, the first refractive index layers 121 include anisotropic film layers, and the second refractive index layers 122 include isotropic film layers.
Illustratively, the selective wavelength transmissive film 12 further includes a substrate 123 and a protective layer 124.
Illustratively, polarized light of the plurality of first refractive index layers 121 in the same direction has the same or different refractive indexes. The polarized light of the plurality of second refractive index layers 122 in the same direction has the same or different refractive indexes.
Fig. 7 is a schematic view showing refractive indexes of the selective wavelength transmitting film 12 according to an embodiment of the present invention.
Fig. 8 shows the refractive index of the second refractive index layer 122a and the first refractive index layer 121b of fig. 7 for polarized light of different polarization directions. The second refractive index layer 122a is a uniform medium having the same refractive index n for polarized light having a polarization direction parallel to the x-direction and parallel to the y-direction, n=1.57. The first refractive index layer 121b is a birefringent medium, and has a refractive index of 1.80 for deflected light having a polarization direction parallel to the x-direction and a refractive index of 1.57 for polarized light having a polarization direction parallel to the y-direction.
In some embodiments, the backlight 14 is also capable of emitting non-target light rays that do not have a particular wavelength, and the selective wavelength transmissive film 12 is capable of blocking the transmission of the non-target light rays.
In the display module provided in the foregoing embodiment, the selective wavelength transmitting film 12 is configured to transmit the target light with the wavelength range in the specified wavelength band, and prevent the non-target light from transmitting, so that the selective wavelength transmitting film 12 can transmit the target light meeting the specific wavelength range, and the high color gamut transmission function of the display module is realized through the target light.
In some embodiments, the selective wavelength transmissive film 12 is divided into a plurality of groups of selectively transmissive structures arranged in sequence, each selectively transmissive structure including at least one first refractive index layer 121 and at least one second refractive index layer 122; each group of selectively transparent structures prevents transmission of non-target light of a corresponding wavelength.
Illustratively, the wavelengths of the non-target light rays that the respective sets of selectively permeable structures correspondingly block are different.
In the display module provided in the above embodiment, the reflection spectrum of the selective wavelength transmitting film 12 is adjusted by deleting the selective transmission structure with a specific refractive index. By deleting the selection structure corresponding to the target light, the selective wavelength transmission film 12 does not prevent the target light from transmitting, so that the display module can realize transmission display through the transmitted target light.
In the display module provided by the embodiment, the manufacturing process is simple, and the Li Yuliang rate is improved.
In the display module provided in the above embodiment, the wavelength range of the target light can be set in a specified range according to the need, which is favorable for improving the color gamut of the display module during transmission display.
In some embodiments, the target light has wavelengths that include wavelengths corresponding to red spectral peaks, wavelengths corresponding to green spectral peaks, and wavelengths corresponding to blue spectral peaks.
Exemplary, the target light has wavelengths including 450nm,540nm, and 630nm. Light with wavelengths of 450nm,540nm and 630nm can pass through the selective wavelength transmission film 12, so that the transmission function of the display module is realized.
In the display module provided in the foregoing embodiment, the selective wavelength transmitting film 12 is configured to transmit the red light spectrum peak value, the wavelength corresponding to the green light spectrum peak value and the light corresponding to the blue light spectrum peak value, so as to be beneficial to improving the color gamut of the display module during transmission display.
In addition, the wavelength of blue light transmitted by the backlight is 450nm, so that the backlight has a certain eye protection effect, and the color gamut of a transmission mode can be improved.
In some embodiments, the target light rays include at least one of a first target light ray, a second target light ray, and a third target light ray;
the wavelength of the first target light is between 440nm and 460 nm;
the wavelength of the second target light is between 530nm and 550 nm;
the wavelength of the third target light is between 620nm and 640 nm.
In the display module provided in the foregoing embodiment, the selective wavelength transmission film 12 is configured to transmit the target light between 440nm and 460nm, between 530nm and 550nm, and between 620nm and 640nm, so that the display module can realize transmissive display and reflective display, and is also beneficial to improving the color gamut of the display module during transmissive display.
The above arrangement can achieve 34% of the original brightness of the backlight passing through the selective wavelength transmitting film 12, and 82% of the reflectance of the ambient light D65 passing through the selective wavelength transmitting film 12.
In some embodiments, the selective wavelength transmissive film 12 is capable of transmitting light of the same wavelength as the target light in ambient light.
As shown in fig. 10, a spectrum of light emitted from the backlight 14 and a spectrum of ambient light D65 are shown. Fig. 11 shows the spectrum of light emitted from the backlight 14 transmitted through the selective wavelength transmitting film 12, and the spectrum of ambient light D65 reflected by the selective wavelength transmitting film 12.
In fig. 10 and 11, A1 represents a spectrum of the ambient light D65, and A2 represents a spectrum of the light emitted from the backlight 14.
Illustratively, the selective wavelength transmitting film 12 is capable of transmitting light of the same wavelength as the target light in the ambient light, and the selective wavelength transmitting film 12 is capable of reflecting light of the same wavelength as the non-target light in the ambient light.
In the display module provided in the above embodiment, by providing the selective wavelength transmitting film 12, the transmissive display and the reflective display of the display module are realized.
In some embodiments, the liquid crystal display panel 11 includes an ADS panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer 110 between the first substrate and the second substrate; the ADS panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same interval.
In some embodiments, the liquid crystal display panel 11 includes a VA panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer 110 between the first substrate and the second substrate; the VA panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same layer interval.
In some embodiments, the liquid crystal display panel 11 includes a TN panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer 110 between the first substrate and the second substrate; the TN panel includes first and second electrodes on the first and second substrates, respectively.
In some embodiments, the liquid crystal display panel 11 includes an ECB panel including a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer 110 between the first substrate and the second substrate; the ECB panel includes first and second electrodes on the first and second substrates, respectively.
The first substrate may be a glass substrate or a quartz substrate, for example. The second substrate may be a glass substrate or a quartz substrate.
Illustratively, the first electrode and the second electrode are each positioned between a respective substrate and the liquid crystal layer 110.
The embodiment of the invention also provides a display device which comprises the display module provided by the embodiment.
The display module provided in the above embodiment includes an upper polarizer 10, a display panel 11, a selective wavelength transmissive film 12, a lower polarizer 13 and a backlight 14, which are sequentially arranged; the selective wavelength transmitting film 12 is capable of transmitting a target light having a specific wavelength emitted from the backlight 14 and blocking a non-target light having no specific wavelength emitted from the backlight 14 from transmitting. In the display module provided in the foregoing embodiment, the selective wavelength transmitting film 12 can transmit the target light with the wavelength range in the specified wavelength band according to the actual needs, and can control the wavelength range in which the selective wavelength transmitting film 12 can transmit and reflect according to the actual needs, so as to realize the transmission and reflection functions of the display module. In the display module provided in the above embodiment, only the selective wavelength transmitting film 12 is provided to realize transmissive display and reflective display, so as to solve the problems of complex optical structure, high cost and the like of the reflective liquid crystal display. In the display module provided in the above embodiment, in an environment with darker light, the backlight source 14 provides brightness to realize transmission display, so that the display module is in a normally black mode; in bright environments, the reflective display is realized by using the total reflection of ambient light, and the display is also in a normally black mode.
The display device provided by the embodiment of the invention has the same beneficial effects when the display device comprises the display module, and the description is omitted here.
Note that, the display device may be: any product or component with display function such as a television, a display, a digital photo frame, a mobile phone, a tablet personal computer and the like, wherein the display device further comprises a flexible circuit board, a printed circuit board, a backboard and the like.
It should be noted that "same layer" in the embodiments of the present invention may refer to a film layer on the same structural layer. Or, for example, the film layers in the same layer may be a layer structure formed by forming a film layer for forming a specific pattern by the same film forming process and then patterning the film layer by one patterning process using the same mask plate. Depending on the particular pattern, a patterning process may include multiple exposure, development, or etching processes, and the particular pattern in the formed layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.
In the method embodiments of the present invention, the serial numbers of the steps are not used to define the sequence of the steps, and it is within the scope of the present invention for those skilled in the art to change the sequence of the steps without performing any creative effort.
In this specification, all embodiments are described in a progressive manner, and identical and similar parts of the embodiments are all referred to each other, and each embodiment is mainly described in a different way from other embodiments. In particular, for the method embodiments, since they are substantially similar to the product embodiments, the description is relatively simple, and reference is made to the section of the product embodiments for relevant points.
Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected," "coupled," or "connected," and the like, are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A display module, comprising: the upper polaroid, the display panel, the selective wavelength transmission film, the lower polaroid and the backlight source are sequentially arranged;
the upper polarizer is provided with a first transmission axis and is used for generating polarized light with a polarization direction parallel to the first transmission axis; the display panel comprises a liquid crystal display panel; the lower polarizer is provided with a second light transmission axis and is used for generating polarized light with a polarization direction parallel to the second light transmission axis;
the selective wavelength transmitting film is capable of transmitting a target light having a specific wavelength emitted from the backlight;
the selective wavelength transmitting film is capable of transmitting light rays having the same wavelength as the target light rays in the ambient light; the wavelength of the target light comprises a wavelength corresponding to a red light spectrum peak value, a wavelength corresponding to a green light spectrum peak value and a wavelength corresponding to a blue light spectrum peak value;
the selective wavelength transmitting film can reflect light rays with the same wavelength as non-target light rays in the ambient light;
when the display module works in a transmission mode, under the condition of power-on, target light emitted by the backlight source is linear polarized light after passing through the film through selective wavelength, and then enters the display panel, liquid crystal in the power-on display panel changes the rotation direction of the linear polarized light, the linear polarized light passes through the upper polaroid, the display module is in a bright state, meanwhile, light with the same wavelength as the non-target light in ambient light is reflected by the selective wavelength transmission film, and the display module simultaneously realizes transmission display and reflection display in the transmission mode.
2. The display module of claim 1, wherein the selective wavelength transmissive film comprises a plurality of first refractive index layers and a plurality of second refractive index layers; the first refractive index layers and the second refractive index layers are alternately arranged, the refractive index of the first refractive index layers is larger than that of the second refractive index layers, the first refractive index layers comprise anisotropic film layers, and the second refractive index layers comprise isotropic film layers.
3. The display module of claim 2, wherein the backlight is further capable of emitting non-target light not having a specific wavelength, and wherein the selective wavelength transmissive film is capable of blocking the non-target light from transmitting.
4. A display module according to claim 3, wherein the selective wavelength transmissive film is divided into a plurality of groups of selectively transmissive structures arranged in sequence, each selectively transmissive structure comprising at least one first refractive index layer and at least one second refractive index layer; each group of selectively transparent structures prevents transmission of non-target light of a corresponding wavelength.
5. The display module of claim 1, wherein the target light has a wavelength that includes a wavelength corresponding to a red light spectral peak, a wavelength corresponding to a green light spectral peak, and a wavelength corresponding to a blue light spectral peak.
6. The display module of claim 5, wherein the target light rays comprise at least one of a first target light ray, a second target light ray, and a third target light ray;
the wavelength of the first target light is between 440nm and 460 nm;
the wavelength of the second target light is between 530nm and 550 nm;
the wavelength of the third target light is between 620nm and 640 nm.
7. The display module of claim 1, wherein the liquid crystal display panel comprises an ADS panel comprising a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer between the first substrate and the second substrate; the ADS panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same interval.
8. The display module of claim 1, wherein the liquid crystal display panel comprises a VA panel comprising a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer between the first substrate and the second substrate; the VA panel further comprises a first electrode and a second electrode which are positioned on the same side of the first substrate or the same side of the second substrate, and the first electrode and the second electrode are arranged at the same layer interval.
9. The display module of claim 1, wherein the liquid crystal display panel comprises a TN panel comprising a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer between the first substrate and the second substrate; the TN panel includes first and second electrodes on the first and second substrates, respectively.
10. The display module of claim 1, wherein the liquid crystal display panel comprises an ECB panel comprising a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer between the first substrate and the second substrate; the ECB panel includes first and second electrodes on the first and second substrates, respectively.
11. A display device comprising a display module according to any one of claims 1 to 10.
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| CN1851539A (en) * | 2005-04-22 | 2006-10-25 | 青岛讯源光电有限公司 | Full-reflective full-transmission type colour liquid crystal display device |
| TWI376546B (en) * | 2008-09-03 | 2012-11-11 | Au Optronics Corp | Display apparatus |
| CN101349830A (en) * | 2008-09-11 | 2009-01-21 | 友达光电股份有限公司 | Display device |
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| CN113985643A (en) * | 2021-10-29 | 2022-01-28 | 京东方科技集团股份有限公司 | Display panel and display device |
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