CN111308773A - Display module and display device - Google Patents

Display module and display device Download PDF

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Publication number
CN111308773A
CN111308773A CN202010160780.1A CN202010160780A CN111308773A CN 111308773 A CN111308773 A CN 111308773A CN 202010160780 A CN202010160780 A CN 202010160780A CN 111308773 A CN111308773 A CN 111308773A
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liquid crystal
crystal layer
optical film
light
film layer
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CN202010160780.1A
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Chinese (zh)
Inventor
陈兴武
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TCL China Star Optoelectronics Technology Co Ltd
TCL Huaxing Photoelectric Technology Co Ltd
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TCL Huaxing Photoelectric Technology Co Ltd
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Priority to CN202010160780.1A priority Critical patent/CN111308773A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells

Abstract

The invention discloses a display module, which comprises a display panel, a shift liquid crystal layer and an optical film layer, wherein the shift liquid crystal layer and the optical film layer are sequentially arranged in the light emitting direction of the display panel; the first emergent light is transmitted to a first incident area of the optical film layer after being deflected by the liquid crystal layer, and is transmitted out of the display module along a first light path after entering the optical film layer; and the second emergent light is transmitted to a second incidence area of the optical film layer after passing through the offset liquid crystal layer, and is transmitted out of the display module along a second light path after entering the optical film layer, wherein the light transmission direction of the first light path is different from that of the second light path. The offset liquid crystal layer in the display module can enable the first emergent light and the second emergent light emitted by the display panel to be offset, and the optical film layer can change transmission light paths of the first emergent light and the second emergent light and enable the first emergent light and the second emergent light to be transmitted along different light paths, so that a display screen manufactured based on the display module is enabled to have more than one optimal viewing area.

Description

Display module and display device
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device.
Background
When a user watches the display screen, the user needs to stand at the optimal viewing area of the display screen to have a better viewing experience, but the existing display screen only has one optimal viewing area, and because the position and the area size of the optimal viewing area are limited, some users can only be positioned outside the optimal viewing area to view the content displayed on the display screen. For example, a large percentage of consumer locations in a movie theater are outside the optimal viewing area. In the vehicle, only one vehicle-mounted display screen is provided, the directions of the vehicle-mounted display screen viewed by the left driver and the right copilot are different, the purposes of using the vehicle-mounted display screen by the left driver and the right copilot are also different, the former purpose is to observe road conditions, vehicle conditions and navigation, and the right copilot purpose is to watch entertainment such as videos.
Disclosure of Invention
The invention provides a display module and a display device, which can solve the technical problem that a display screen in the prior art only has an optimal viewing area.
The invention provides a display module, which comprises a display panel, a shift liquid crystal layer and an optical film layer, wherein the shift liquid crystal layer and the optical film layer are sequentially arranged in the light emitting direction of the display panel;
the first emergent light is transmitted to a first incident area of the optical film layer after passing through the offset liquid crystal layer, and after entering the optical film layer through the first incident area, the first incident light is transmitted out of the display module along a first light path;
the second emergent light is transmitted to a second incidence area of the optical film layer after passing through the offset liquid crystal layer, and after entering the optical film layer through the second incidence area, the second incident light is transmitted out of the display module along a second light path, wherein the light transmission direction of the first light path is different from that of the second light path.
Optionally, the offset liquid crystal layer includes a twisted nematic liquid crystal layer and a blue phase liquid crystal layer, the twisted nematic liquid crystal layer is close to the display panel, and the blue phase liquid crystal layer is close to the optical film layer; the polarization directions of the first emergent light and the second emergent light are vertical to the optical axis of the blue phase liquid crystal layer;
after passing through the twisted nematic liquid crystal layer, the first emergent light changes the polarization direction to be parallel to the optical axis of the blue phase liquid crystal layer, and then is transmitted to a second incidence area of the optical film layer through the blue phase liquid crystal layer;
the first emergent light is transmitted to the first incidence area of the optical film layer after passing through the twisted nematic liquid crystal layer and the blue phase liquid crystal layer.
Optionally, the first emergent light and the second emergent light have an included angle phi in transmission in the blue-phase liquid crystal layer, and an optical axis of the blue-phase liquid crystal layer and a plane of the blue-phase liquid crystal layer have an included angle theta;
the relationship between the included angle phi and the included angle theta is as follows:
Figure BDA0002405711520000021
wherein n iseDenotes an abnormal refractive index, n, of a blue phase liquid crystal layeroIndicating the ordinary refractive index of the blue phase liquid crystal layer.
Optionally, the thickness of the blue phase liquid crystal layer is 3um to 100 um.
Optionally, the abnormal refractive index of the blue phase liquid crystal layer is 1-2, and the normal refractive index of the blue phase liquid crystal layer is 1-2.
Optionally, the included angle θ ranges from 30 degrees to 60 degrees.
Optionally, the optical film layer includes a first material and a second material, a first contact surface and a second contact surface are formed between the first material and the second material, and the refractive index of the first material is smaller than that of the second material;
the first emergent light enters a first material of the optical film layer through a first incident area of the optical film layer and is transmitted out of the display module along a first light path after passing through a first contact surface of the optical film layer;
the second emergent light enters the first material of the optical film layer through the second incident area of the optical film layer and is transmitted out of the display module along the second light path after passing through the second contact surface of the optical film layer.
Optionally, the optical film layer includes a plurality of triangular prism-shaped first materials, and the first contact surface and the second contact surface between the first material and the second material are planar.
Optionally, the optical film layer includes a plurality of semi-cylindrical first materials, and a first contact surface and a second contact surface between the first material and the second material are curved surfaces.
Further, the invention provides a display device, which comprises the display module.
The invention provides a display module and a display device, wherein the display module comprises a display panel, a shift liquid crystal layer and an optical film layer, the shift liquid crystal layer can shift a first emergent light and a second emergent light emitted by the display panel, and the optical film layer can change transmission light paths of the first emergent light and the second emergent light and enable the first emergent light and the second emergent light to be transmitted along different light paths, so that a display screen manufactured based on the display module has more than one optimal viewing area.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating propagation of first emergent light in a display module according to an embodiment of the invention;
fig. 3 is a schematic view illustrating propagation of first emergent light and second emergent light in an optical film of a display module according to an embodiment of the invention;
fig. 4 is a schematic diagram illustrating propagation of second emergent light in a display module according to an embodiment of the disclosure;
fig. 5 is a schematic view illustrating propagation of first emergent light and second emergent light in an optical film of a display module according to an embodiment of the invention;
fig. 6 is a schematic diagram illustrating propagation of first emergent light and second emergent light in a blue-phase liquid crystal layer in a display module according to an embodiment of the invention;
fig. 7 is a schematic view illustrating propagation of first emergent light and second emergent light in another optical film in a display module according to an embodiment of the invention;
FIG. 8 shows the ordinary refractive index n of a blue phase liquid crystal layer0Abnormal refractive index neAnd the wavelength of the emergent light.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a display module provided in this embodiment, where the display module includes a display panel 10, and an offset liquid crystal layer 20 and an optical film layer 30 sequentially disposed in a light-emitting direction of the display panel 10.
In the display module, the display panel 10 emits a first outgoing light 40 and a second outgoing light 50, and the polarization directions of the first outgoing light 40 and the second outgoing light 50 are the same.
Referring to fig. 1, a dotted arrow and a solid arrow in the figure respectively indicate the first emergent light 40 and the second emergent light 50. It should be understood that the first outgoing light 40 and the second outgoing light 50 are light emitted by the display panel to display an image, the first outgoing light 40 corresponds to a first image, and the second outgoing light 50 corresponds to a second image. In other examples, the first outgoing light 40 and the second outgoing light 50 may correspond to the same image.
In the case that the first outgoing light 40 corresponds to the first image and the second outgoing light 50 corresponds to the second image, when the display panel 10 alternately displays the first image and the second image in a high-frequency cycle, the display panel 10 correspondingly emits the first outgoing light 40 corresponding to the first image and the second outgoing light 50 corresponding to the second image. In this case, the first outgoing light 40 and the second outgoing light emitted by the display panel 10 are transmitted out of the display module along the first optical path and the second optical path based on the offset liquid crystal layer 20 and the optical film layer 30, respectively. At this time, the user can view the first image and the second image in the first optimal viewing area and the second optimal viewing area of the display module corresponding to the first optical path and the second optical path. It is understood that the process that the human eye cannot perceive when the display panel 10 alternately emits the outgoing light at high frequencies according to the preset period is only to visually see two or one displayed image. The embodiment can be applied to vehicles, and solves the problem that only one vehicle-mounted display screen is used for a left driver and a right copilot, the purpose of the vehicle-mounted display screen is different, the former purpose is to observe road conditions, vehicle conditions and navigation, and the purpose of the right copilot is to watch videos and other entertainment activities.
For the situation that the first outgoing light 40 and the second outgoing light 50 correspond to the same image, the display panel 10 only displays one image, in this situation, the first outgoing light 40 and the second outgoing light 50 are continuous light, the display panel does not need to be emitted from the display panel 10 alternately in a high frequency period, but directly emits the continuous light, and the outgoing light emitted by the display panel at this time is transmitted out from the display module along the first light path and the second light path based on the offset liquid crystal layer 20 and the optical film layer 30 respectively. At this time, the user can view the same image in the first optimal viewing area and the second optimal viewing area of the display module corresponding to the first optical path and the second optical path. This embodiment can be applied to movie theaters so that more consumers can watch movies in the best viewing area.
The display module provided by the present invention will be described mainly based on the fact that the first outgoing light 40 corresponds to a first image and the second outgoing light 50 corresponds to a second image.
The liquid crystal layer 20 is a liquid crystal layer capable of changing the shift direction of the first emitting light 40 and the second emitting light 50, and may be a layer of liquid crystal or a combination of multiple layers of liquid crystal, and in some examples, referring to fig. 1, the liquid crystal layer 20 may be composed of a twisted nematic liquid crystal layer 201 and a blue phase liquid crystal layer 202.
In the present embodiment, the optical film layer includes a first material 301 and a second material 302, and a first contact surface and a second contact surface are formed between the first material 301 and the second material 302, and when the first outgoing light 40 and the second outgoing light 50 are transmitted to the first contact surface and the second contact surface respectively, the first outgoing light 40 and the second outgoing light 50 are refracted, so that the first outgoing light 40 and the second outgoing light 50 are transmitted out of the display module provided by the present invention along the first light path 60 and the second light path 70, referring to fig. 1.
The following describes the propagation process of the first outgoing light 40 and the second outgoing light 50 in the display module:
after the first outgoing light 40 passes through the offset liquid crystal layer 20 and is transmitted to the first incident region a of the optical film 30, referring to fig. 2, after the first color light enters the optical film 30 through the first incident region a, the first outgoing light 40 is transmitted out of the display module along the first light path 60, referring to fig. 3.
The second emergent light 50 passes through the offset liquid crystal layer 20 and is transmitted to the second incident region b of the optical film 30, see fig. 4, and then after entering the optical film 30 through the second incident region b, the second emergent light 50 is transmitted out of the display module along the second light path 70, see fig. 3.
The first incident area a and the second incident area b are formed by transmitting the first outgoing light 40 and the second outgoing light 50 on the optical film layer 30. In the first incident area a, more of the first outgoing light 40 is emitted, and in the second incident area b, more of the second outgoing light 50 is emitted.
It should be understood that the optical path includes a light propagation path and a light propagation direction, and in the present embodiment, the light propagation direction of the first optical path 60 is different from the light propagation direction of the second optical path 70. Referring to fig. 1, at this time, the eyes of the user 1 and the user 2 receive the first outgoing light 40 and the second outgoing light 50 emitted from the display panel 10, respectively, and the user 1 and the user 2 see the first image and the second image played on the display panel 10, respectively.
It should be understood that the first material 301 corresponds to a refractive index n1, the second material 302 corresponds to a refractive index n2, where n2 > n1, and the incident angle θ 1 and the exit angle θ 2 satisfy the requirement shown in FIG. 5
Figure BDA0002405711520000071
Theta 1 is more than theta 2, so that the incident light is deflected towards the normal direction of the contact surface of the first material 301 and the second material 302 after the incident light is incident on the second material 302 from the first material 301, thereby leading to the incident lightThe light is deflected, in some examples, one of the first material 301 and the second material 302 may also be air.
The offset liquid crystal layer in the display module can enable the first emergent light and the second emergent light emitted by the display panel to be offset, and the optical film layer can change the transmission light paths of the first emergent light and the second emergent light to enable the first emergent light and the second emergent light to be transmitted along different light paths, so that a display screen manufactured based on the display module has more than one optimal viewing area.
The following will continue to describe some other display modules that can be implemented according to the present invention based on the display modules provided in the above embodiments.
With reference to fig. 1, the offset liquid crystal layer 20 includes a twisted nematic liquid crystal layer 201 and a blue phase liquid crystal layer 202, the twisted nematic liquid crystal layer 201 is close to the display panel 10, and the blue phase liquid crystal layer 202 is close to the optical film layer 30.
Twisted Nematic liquid crystal, TN is a abbreviation of Twist Nematic liquid crystal, which is a twisted Nematic liquid crystal TN liquid crystal formed by sandwiching a layer of positive dielectric anisotropic liquid crystal between two glass substrates coated with transparent conductive layers, then adding a polarizer on each of the upper and lower sides, and adding a reflective sheet on the bottom surface. In the twisted nematic liquid crystal, liquid crystal molecules are aligned parallel to the glass surface, and the alignment direction is continuously twisted by 90 ° between the upper and lower glasses.
In this embodiment, in the twisted nematic liquid crystal, under the condition of no electric field, the incident light passes through the liquid crystal layer after passing through the polarizer, and then is rotated by 90 degrees by the liquid crystal layer with the molecules twisted and arranged, when leaving the liquid crystal layer, the polarization direction of the twisted nematic liquid crystal is exactly the same as that of the other polarizer, so that the light can pass smoothly, and the whole electrode surface is bright. In the case of an applied electric field, the optical axis of each liquid crystal molecule is rotated in accordance with the direction of the electric field, and thus the liquid crystal layer loses its ability to rotate optically, so that the polarization from the incident polarizer is transmitted while maintaining the original polarization direction.
The working principle of the blue phase liquid crystal layer is based on the kerr effect. The kerr effect refers to the phenomenon of electrically induced birefringence that is proportional to the square of the electric field. A substance placed in an electric field exhibits anisotropy because its molecules are oriented (deflected) by the action of an electric force, resulting in birefringence, i.e., the refractive power of the substance to light differs in two different directions.
The blue phase liquid crystal is arranged between two parallel electrode plates to form a Kerr cell, an external electric field acts on the blue phase liquid crystal through the parallel electrode plates, the blue phase liquid crystal is changed into an optical uniaxial crystal under the action of the external electric field, and the direction of an optical axis of the crystal is parallel to the direction of the electric field.
When linearly polarized light passes through the blue phase liquid crystal in a direction perpendicular to the electric field, the linearly polarized light is decomposed into two beams of linearly polarized light, the light vector of one beam of linearly polarized light is along the direction of the electric field, and the light vector of the other beam of linearly polarized light is perpendicular to the electric field. Blue phase liquid crystals are positively or negatively birefringent substances and depend on the extraordinary refractive index neMinus the ordinary index of refraction n0The value of (b) is positive or negative. In some examples of the present embodiment, the anomalous refractive index of the blue phase liquid crystal layer is 1-2, and the ordinary refractive index of the blue phase liquid crystal layer is 1-2.
In this embodiment, the polarization direction of the first emergent light and the second emergent light emitted by the display panel is perpendicular to the optical axis of the blue-phase liquid crystal layer, wherein the optical axis of the blue-phase liquid crystal layer is disposed in a direction perpendicular to the blue-phase liquid crystal layer plane by 30-60 degrees, and in some examples, may be disposed in a direction of 45 degrees.
In this embodiment, the propagation path of the first outgoing light 40 is: the first outgoing light 40 passes through the twisted nematic liquid crystal layer 201 and the blue phase liquid crystal layer 202 and then is transmitted to the first incident region a of the optical film 30, as shown in fig. 2.
In this embodiment, the propagation path of the second outgoing light 50 is: the second outgoing light 50 passes through the twisted nematic liquid crystal layer, changes the polarization direction to be parallel to the optical axis of the blue phase liquid crystal layer, and then passes through the blue phase liquid crystal layer to be transmitted to the second incident region b of the optical film 30, as shown in fig. 4. The first incident area a and the second incident area b are formed by transmitting the first outgoing light 40 and the second outgoing light 50 on the optical film layer 30. More of the first outgoing light 40 is in the first incident area a, and more of the second outgoing light 50 is in the second incident area b.
Please refer to fig. 6, which is a schematic diagram of the first outgoing light 40 and the second outgoing light 50 being transmitted in the blue-phase liquid crystal layer 202 at the same time, but it should be noted that, since the first outgoing light 40 and the second outgoing light 50 are light emitted by the display panel periodically and alternately, the first outgoing light 40 and the second outgoing light 50 are almost impossible to be transmitted in the blue-phase liquid crystal layer at the same time, but in order to explain the technical principle of the present invention, paths of the first outgoing light 40 and the second outgoing light 50 being transmitted in the blue-phase liquid crystal layer 202 are drawn at the same time, and the first outgoing light 40 and the second outgoing light 50 have an included angle Φ in the blue-phase liquid crystal layer.
In this embodiment, an included angle θ is formed between the optical axis of the blue-phase liquid crystal layer and the plane of the blue-phase liquid crystal layer, please refer to fig. 6, where the relationship between the included angle Φ and the included angle θ is:
Figure BDA0002405711520000091
wherein n iseDenotes an abnormal refractive index, n, of a blue phase liquid crystal layeroIndicating the ordinary refractive index of the blue phase liquid crystal layer. In some examples of this embodiment, the included angle θ ranges from 30 degrees to 60 degrees.
The included angle phi can be calculated based on a relation between the included angle phi and the included angle theta, and then the sizes of the first incident region a and the second incident region b can be obtained based on the thickness of the blue-phase liquid crystal layer 202, and then the optical film layer 30 can be correspondingly manufactured, so that the optical film layer 30 can be well matched with the twisted nematic liquid crystal layer 201 and the blue-phase liquid crystal layer 202. It is to be appreciated that in some examples, the thickness of the blue phase liquid crystal layer may be 3um to 100 um.
In some other embodiments of the present invention, the optical film layer 30 includes a first material 301 and a second material 302, referring to fig. 3, a contact surface is formed between the first material 301 and the second material 302, in this embodiment, the contact surface is divided into a first contact surface a and a second contact surface B based on whether the first outgoing light 40 and the second outgoing light 50 pass through, it should be understood that the refractive index of the first material is smaller than that of the second material.
The first outgoing light 40 enters the first material of the optical film 30 through the first incident region a of the optical film 30, and is transmitted out of the display module along the first light path 60 after passing through the first contact surface a of the optical film 30.
The second outgoing light 50 enters the first material of the optical film 30 through the second incident region B of the optical film 30, and is transmitted out of the display module along the second light path 70 after passing through the second contact surface B of the optical film 30.
Referring to fig. 3, in this example, the optical film layer 30 includes a plurality of triangular prism-shaped first materials 301, a first contact surface a and a second contact surface B between the first materials 301 and the second materials 302 are planes, the first contact surface a passes through the first outgoing light 40, and the second contact surface B passes through the second outgoing light 50.
Referring to fig. 7, in this example, the optical film layer 30 includes a plurality of semi-cylindrical first materials 301, a first contact surface a and a second contact surface B between the first materials 301 and the second materials 302 are curved surfaces, the first contact surface a passes through the first outgoing light 40, and the second contact surface B passes through the second outgoing light 50.
For blue phase liquid crystal layer, its abnormal refractive index neNormal refractive index noAs the wavelength changes, the shorter the wavelength, the lower the anomalous refractive index n, as shown in fig. 8eNormal refractive index noThe larger, the normal refractive index and the abnormal refractive index no/neThe smaller the ratio, i.e. the same film thickness of the photonic crystal cannot deflect the RGB three-color light to the same position at the same time. For this problem, the thickness of the blue phase liquid crystal layer can be made constant, and the abnormal refractive index n can be controlled by changing the electric field intensityeSo that the normal refractive index and the abnormal refractive index n are made to be different even if having different wavelengthso/neThe same ratio, so that the included angle phi in fig. 6 can be maintained unchanged, and the same offset can be obtained by controlling RGB simultaneously through electric field control.
The offset liquid crystal layer in the display module can enable the first emergent light and the second emergent light emitted by the display panel to be offset, and the optical film layer can change the transmission light paths of the first emergent light and the second emergent light to enable the first emergent light and the second emergent light to be transmitted along different light paths, so that a display screen manufactured based on the display module has more than one optimal viewing area.
The invention also provides a display device which comprises the display module. The display device manufactured based on the display module and the display screen manufactured based on the display device have more than one optimal viewing area.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present invention is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no acts or modules are necessarily required of the invention.
In the above embodiments, the description of each embodiment has its own emphasis, and parts of a certain embodiment that are not described in detail can be referred to related descriptions of other embodiments, and the above serial numbers of the embodiments of the present invention are merely for description and do not represent advantages and disadvantages of the embodiments, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention and as claimed in the claims, and these forms are within the protection of the present invention.

Claims (10)

1. A display module is characterized by comprising a display panel, a shift liquid crystal layer and an optical film layer, wherein the shift liquid crystal layer and the optical film layer are sequentially arranged in the light emitting direction of the display panel;
the first emergent light passes through the offset liquid crystal layer and then is transmitted to a first incident area of the optical film layer, and after entering the optical film layer through the first incident area, the first incident light is transmitted out of the display module along a first light path;
the second emergent light is transmitted to a second incidence area of the optical film layer after passing through the offset liquid crystal layer, the second incident light is transmitted out of the display module along a second light path after entering the optical film layer through the second incidence area, and the light transmission direction of the first light path is different from that of the second light path.
2. The display module of claim 1, wherein the offset liquid crystal layer comprises a twisted nematic liquid crystal layer, a blue phase liquid crystal layer, the twisted nematic liquid crystal layer being proximate to the display panel, the blue phase liquid crystal layer being proximate to the optical film layer; the polarization directions of the first emergent light and the second emergent light are vertical to the optical axis of the blue-phase liquid crystal layer;
after the first emergent light passes through the twisted nematic liquid crystal layer, the polarization direction of the first emergent light is changed to be parallel to the optical axis of the blue phase liquid crystal layer, and then the first emergent light is transmitted to a second incidence area of the optical film layer through the blue phase liquid crystal layer;
and the first emergent light is transmitted to a first incidence area of the optical film layer after passing through the twisted nematic liquid crystal layer and the blue phase liquid crystal layer.
3. The display module of claim 2, wherein the first and second emergent lights have an angle Φ during transmission in the blue-phase liquid crystal layer, and an optical axis of the blue-phase liquid crystal layer has an angle θ with a plane of the blue-phase liquid crystal layer;
the relation between the included angle phi and the included angle theta is as follows:
Figure FDA0002405711510000011
wherein n iseDenotes an abnormal refractive index, n, of the blue phase liquid crystal layeroIndicating the ordinary refractive index of the blue phase liquid crystal layer.
4. The display module of claim 2, wherein the thickness of the blue phase liquid crystal layer is 3um to 100 um.
5. The display module of claim 3, wherein the abnormal refractive index of the blue phase liquid crystal layer is 1-2, and the normal refractive index of the blue phase liquid crystal layer is 1-2.
6. The display module according to claim 3, wherein the included angle θ is in a range of 30 degrees to 60 degrees.
7. The display module of any of claims 1-6, wherein the optical film layer comprises a first material and a second material, the first material and the second material forming a first contact surface and a second contact surface therebetween, the first material having a refractive index less than a refractive index of the second material;
the first emergent light enters the first material of the optical film layer through the first incident area of the optical film layer and is transmitted out of the display module along the first light path after passing through the first contact surface of the optical film layer;
and the second emergent light enters the first material of the optical film layer through the second incident area of the optical film layer, and is transmitted out of the display module along a second light path after passing through the second contact surface of the optical film layer.
8. The display module of claim 7, wherein the optical film layer comprises a plurality of triangular prism-shaped first materials, and the first and second contact surfaces between the first and second materials are planar.
9. The display module of claim 7, wherein the optical film layer comprises a plurality of semi-cylindrical first materials, and a first contact surface and a second contact surface between the first materials and the second materials are curved.
10. A display device, characterized in that the display device comprises a display module according to any one of claims 1-9.
CN202010160780.1A 2020-03-10 2020-03-10 Display module and display device Pending CN111308773A (en)

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CN104330916A (en) * 2014-11-26 2015-02-04 友达光电股份有限公司 Dual-picture display with full resolution ratio and driving method of dual-picture display
CN104460115A (en) * 2014-12-31 2015-03-25 苏州大学 Multi-view pixel directional backlight module and naked-eye 3D display device
CN104869392A (en) * 2014-02-21 2015-08-26 三星电子株式会社 Autostereoscopic Multi-view Image Display Apparatus
CN108172125A (en) * 2018-01-31 2018-06-15 京东方科技集团股份有限公司 A kind of display device, automobile
CN109633919A (en) * 2019-01-21 2019-04-16 深圳市华星光电技术有限公司 Bore hole 3D display device and its display methods

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CN101576680A (en) * 2008-05-08 2009-11-11 奇美电子股份有限公司 Liquid crystal display device and assembly method thereof
US20130215364A1 (en) * 2012-02-22 2013-08-22 Chimei Innolux Corporation Displays
CN104869392A (en) * 2014-02-21 2015-08-26 三星电子株式会社 Autostereoscopic Multi-view Image Display Apparatus
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