CN117170134A - Distant view display panel and display device - Google Patents
Distant view display panel and display device Download PDFInfo
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- CN117170134A CN117170134A CN202311097053.5A CN202311097053A CN117170134A CN 117170134 A CN117170134 A CN 117170134A CN 202311097053 A CN202311097053 A CN 202311097053A CN 117170134 A CN117170134 A CN 117170134A
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Abstract
The invention discloses a long-range view display panel and a display device, wherein the long-range view display panel comprises: the image light-emitting device comprises an image light-emitting device unit, a cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer, a protective layer and optical adhesive layers among all functional layers, wherein light emitted by the image light-emitting device unit passes through the multi-layer functional film and is transmitted and reflected to emit light rays at the visual angle side to be regulated to obtain single right-handed circularly polarized light or single left-handed circularly polarized light, under the condition that the viewing distance between the image light-emitting device unit and a person is not changed, the emitted image of the image light-emitting device unit is visually hyperopic, the visual distance between the image viewed by the human eye is more than 3m, and tissues such as a crystalline lens, ciliary body and surrounding muscles in the human eye structure are in a relatively relaxed state, so that the aim of relieving visual fatigue and protecting eyes is fulfilled. The invention provides another way for relieving visual fatigue and achieving the purpose of protecting eyes.
Description
Technical Field
The invention belongs to the technical field of display, and relates to a long-range display panel and a display device.
Background
The display technology is an important component of the informatization industry, and is a technology for providing flexible visual information by utilizing an electronic technology, and according to psychological and physiological characteristics of people, the intensity of light, the wavelength (i.e. color) of the light and other characteristics of the light are changed by adopting a proper method to form different forms of visual information. The display panel is used as the best presentation mode of video picture information, is as small as a smart phone and as large as a huge screen of a stock exchange, and provides various ways for obtaining information. The distance between the display screen of the mobile phone and the computer used by people in daily life is usually less than 50cm, and when the display screen of the mobile phone, the computer and the like is watched in a short distance and for a long time, relevant tissues such as crystalline lenses, ciliary bodies and the like in the human eye structure are always in a tension and contraction state, so that eye discomfort such as dry eyes, asthenopia and the like can be caused, and further, relevant eye diseases such as myopia and the like can be caused.
The prior art aims to achieve the purpose of protecting eyes, which is generally achieved by keeping a distance from a display panel or changing parameters of the display panel. Patent CN106569612a discloses an eye protection method, an eye protection display device and a terminal, the eye protection method comprising: detecting the actual distance H between the upper eyelid and the lower eyelid of the user currently; and when the detected actual distance H is not greater than the preset distance H between the upper eyelid and the lower eyelid in the preset user squinting state, adjusting the screen parameter to a preset value. Patent WO2018214751A1 discloses an eye-protecting display device and method, in which a distance detection module detects a vertical distance between the positions of eyes of a user and a display screen, and when the vertical distance is not a set distance, a first control information control module is sent to an execution module, and the execution module controls the movement of the display screen according to the first control information, so that the vertical distance between the positions of the eyes and the display screen is the set distance. It is important to provide another display device capable of achieving the eye-protecting purpose.
Disclosure of Invention
In order to solve the problem that a display screen is too close to human eyes in daily life, the invention provides a long-range display panel and a display device, wherein the display panel comprises a phase delay layer, a cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer and a protective layer.
In order to achieve the technical purpose of the invention, in one aspect, the invention provides a long-range display panel, which comprises an image light-emitting device unit, a cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer, a protective layer and an optical adhesive layer between functional layers.
In the long-range display panel provided by the invention, the cholesteric liquid crystal film layer can reflect left/right circularly polarized light and transmit right/left circularly polarized light, and the adjustable light wavelength range of the cholesteric liquid crystal film layer is 380-760 nm.
The light emitted from the image light emitting device unit is usually visible light in the 380-760 nm band, and the pitch P in the cholesteric liquid crystal film layer is usually 200-600 nm. Therefore, in order to achieve visible light with the adjustable wavelength range of 380-760 nm, it is necessary that the cholesteric liquid crystal film layer has a pitch gradient distribution in the thickness direction. The screw threadThe distance gradient distribution is a continuous distribution or a jump distribution. Wherein the continuous distribution is that the difference between adjacent liquid crystal pitches in the thickness direction of the cholesteric liquid crystal layer is + -1 nm. The jump distribution is that the pitch of adjacent cholesteric liquid crystal layers in the thickness direction of the cholesteric liquid crystal layers is larger, and P 1 ～P N The pitch between the two parts is 2 to 30 different, P 1 For the initial pitch of the cholesteric liquid crystal layer, P N Is the last layer pitch of the cholesteric liquid crystal layer. The wavelength bandwidth of the cholesteric liquid crystal film layer with the pitch gradient distribution is the union of the wavelength bandwidths of the pitches.
In the distant view display panel provided by the invention, the thickness of the first cholesteric liquid crystal film layer and the second cholesteric liquid crystal film layer is 1-100 mu m.
In the long-range display panel provided by the invention, the cholesteric liquid crystal film layer is used for regulating and controlling the thickness of the screw pitch of light with a certain wavelength in the light propagation direction to be 2-30 screw pitches.
The liquid crystal material used for preparing the cholesteric liquid crystal film layer is not particularly limited, and a polymerizable liquid crystal can be adopted as the liquid crystal material by a person skilled in the art.
Exemplary, the present invention provides a long-view display panel including a first phase retardation layer, a first cholesteric liquid crystal film layer, a transflective layer, a second cholesteric liquid crystal film layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in an image light emitting device unit. The first cholesteric liquid crystal film layer and the second cholesteric liquid crystal film layer have opposite spiral structures. The light emitted from the image light emitting device unit is linearly polarized light.
R is right circularly polarized light, L is left circularly polarized light, R/L is right circularly polarized light/left circularly polarized light, L/R is left circularly polarized light/right circularly polarized light, S is linearly polarized light with a vibration direction parallel to a transmission axis of the linear polarizing plate, and P is linearly polarized light perpendicular to S light in a plane.
In the long-range display panel provided by the invention, the linear polarized light emitted by the image light emitting device unit passes through the first phase delay layer, the linear polarized light is converted into circularly polarized light with a certain rotation direction, the circularly polarized light can be one of left circularly polarized light and right circularly polarized light, the circularly polarized light reaches the semi-transparent semi-reflecting layer through the first cholesteric liquid crystal film layer, the circularly polarized light is recorded as R/L200 after being changed in rotation direction by the reflecting part of the semi-transparent semi-reflecting layer, the transmitted part is recorded as L/R100, the L/R100 is reflected back to the semi-transparent semi-reflecting layer by the second cholesteric liquid crystal film layer, the reflected part is recorded as R/L110 after being changed in rotation direction again by the semi-transparent semi-reflecting layer, and the R/L110 can reach the view angle side through the second cholesteric liquid crystal film layer and the protective layer. The R/L200 is reflected back to the transflective layer by the first cholesteric liquid crystal film, wherein the transmissive portion is denoted as R/L210, the reflective portion is denoted as L/R210, and the R/L210 can reach the viewing angle side through the second cholesteric liquid crystal film and the protective layer.
The L/R210 and L/R110 pass through the first cholesteric liquid crystal film layer and then are reflected by the reflective layer in the image light emitting device unit, and repeat the above-described L/R100 light propagation path.
Illustratively, the invention provides a long-range display panel, which comprises a first cholesteric liquid crystal film layer (S30), a semi-transparent semi-reflective layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and an optical adhesive layer between functional layers, wherein the first cholesteric liquid crystal film layer, the semi-transparent semi-reflective layer, the second cholesteric liquid crystal film layer, the protective layer and the optical adhesive layer are sequentially laminated on an image light emitting device unit (S10). The first cholesteric liquid crystal film layer and the second cholesteric liquid crystal film layer have opposite spiral structures. The light emitted from the image light emitting device unit is ordinary unpolarized light.
Further, in the long-range display panel provided by the invention, the common unpolarized light emitted by the image light emitting device unit firstly reaches the first cholesteric liquid crystal film layer, the first cholesteric liquid crystal film layer converts the common unpolarized light incident on the surface of the first cholesteric liquid crystal film layer into about 50% of right-handed circularly polarized light and about 50% of left-handed circularly polarized light, wherein the left/right-handed circularly polarized light can pass through the first cholesteric liquid crystal film layer, and the propagation path of the left/right-handed circularly polarized light after passing through the first cholesteric liquid crystal film layer is consistent with the light propagation path of L/R100 in the long-range display panel. The right/left circularly polarized light reflected by the first cholesteric liquid crystal film layer is reflected again by the image light emitting device unit and then converted into left/right circularly polarized light, and the left/right circularly polarized light can pass through the first cholesteric liquid crystal film layer, and the propagation path of the right/left circularly polarized light is consistent with the light propagation path of the L/R100 in the long-range display panel.
Exemplary, the present invention provides a long-view display panel including a linear polarization layer, a first phase retardation layer, a semi-transparent semi-reflective layer, a second cholesteric liquid crystal film layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in an image light emitting device unit. The second cholesteric liquid crystal film layer is one of a left-handed cholesteric liquid crystal layer or a right-handed cholesteric liquid crystal layer. The light emitted from the image light emitting device unit is ordinary unpolarized light.
Further, in the long-view display panel provided by the invention, the common unpolarized light emitted by the image light emitting device unit firstly reaches the linear polarizing layer, wherein about 50% of the light with the polarization direction perpendicular to the transmission axis of the linear polarizing layer is absorbed, the remaining about 50% of the light with the polarization direction parallel to the transmission axis of the linear polarizing layer can pass through the linear polarizing layer and is marked as P light, the P light is converted into L light or R light of right circularly polarized light after passing through the first phase delay layer, the L/R light reaches the semi-transparent semi-reflective layer, wherein the transmission part is marked as L1/R1, the reflected part is marked as R1/L1, the L1/R1 is reflected by the second cholesteric liquid crystal film layer and is reflected back to the semi-transparent semi-reflective layer, the rotation direction is marked as R11/L11 by the semi-transparent semi-reflective layer, the transmission part is marked as L11/R11, and the R11/L11 passes through the second cholesteric liquid crystal film layer and the protective layer and reaches the view side; R1/L1 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer and is absorbed by the linear polarized light layer; L11/R11 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer, and is absorbed by the linear polarized light layer.
Exemplary, the present invention provides a long-view display panel including a first phase retardation layer, a first cholesteric liquid crystal film layer, a transflective layer, a second phase retardation layer, a reflective linear polarizing layer, a third phase retardation layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in an image light emitting device unit. The first cholesteric liquid crystal film layer is one of a left-handed cholesteric liquid crystal layer or a right-handed cholesteric liquid crystal layer. The light emitted from the image light emitting device unit is linearly polarized light.
In the long-view display panel provided by the invention, the linear polarized light emitted by the image light emitting device unit is converted into left/right circularly polarized light through the first phase delay layer, then reaches the transflective layer through the first cholesteric liquid crystal film layer, wherein the transmitted part of the light is denoted as L/R300, the reflected part of the light is denoted as R/L300, the L/R300 is converted into linear polarized light after passing through the second phase delay layer, then is converted into linear polarized light after being reflected back to the second phase delay layer by the reflective linear polarizing layer, is denoted as S02 after being converted into linear polarized light by the second phase delay layer, is reflected back to the second phase delay layer by the reflective linear polarizing layer, is converted into left/right circularly polarized light after passing through the second phase delay layer, is denoted as L/R400, the reflected part of the L/R400 is denoted as R/L400, the transmitted part of the light is denoted as L/R410, the R/L400 is converted into linear polarized light perpendicular to the S02 after passing through the second phase delay layer, the P02 is converted into the linear polarized light after passing through the reflective linear polarizing layer, and the L/R401 passes through the reflective linear polarizing layer, and reaches the protective layer 401. The R/L300 is reflected back to the semi-transparent and semi-reflective layer through the first cholesteric liquid crystal film layer, the transmitted part is marked as R/L310, the R/L310 is converted into linear polarized light with the polarization direction perpendicular to S02 through the second phase retardation film layer, the linear polarized light is marked as P03, the P03 is converted into right/left circularly polarized light through the third phase retardation layer after passing through the reflective linear polarized layer, the right/left circularly polarized light is marked as R/L311, and the R/L311 reaches the view angle layer through the protective layer.
Through the above optical path, most of the light emitted from the image light emitting device unit can reach the viewing angle side. Meanwhile, after the light is reflected by the multiple functional layers in the light propagation process, the light emitted to the visual angle side is adjusted compared with the light propagation direction of the single image light emitting device unit emitted to the visual angle side, so that the emitted image of the image light emitting device unit is visually hyperopic, namely, the emitted image of the image light emitting device unit is visually virtual in focus at a longer distance. Under the condition that the actual distance between the human eyes and the image light-emitting device unit is less than 1m, the visual distance between the image watched by the human eyes is more than 3m, so that tissues such as crystalline lenses, ciliary bodies and surrounding muscles in the human eye structure are in a relatively relaxed state, thereby realizing the aim of reducing visual fatigue and protecting eyes.
The material for preparing the phase retardation layer is not particularly limited in the present invention, and a liquid crystal material or a non-liquid crystal material having a birefringence may be selected by those skilled in the art.
The semi-transparent and semi-reflective layer is not particularly limited, and a common light-splitting sheet can be selected by a person skilled in the art.
The kind of the linear polarizing layer is not particularly limited in the present invention, and a person skilled in the art may select an iodine-based polyvinyl alcohol linear polarizing layer or a dye-based linear polarizing layer.
The type of the reflective linear polarizing layer is not particularly limited in the present invention, and those skilled in the art can select the reflective linear polarizing layer that reflects P light through S light or reflects S light through P light.
The invention is not particularly limited to the protective layer, and one of toughened glass, an acrylic plate, a PET plate or other optical grade film layers can be selected by a person skilled in the art.
The optical adhesive in the optical adhesive layer is not particularly limited in the present invention, and a common optical adhesive may be used by those skilled in the art.
In another aspect, the present invention provides a long-range view display apparatus including the above long-range view display panel other than the image light emitting device unit (S10). The long-range view display device and the electronic product with the display screen are connected together, so that the aim of relieving visual fatigue and protecting eyes can be achieved. The connection is realized by optical glue or AB glue, or the long-range display device is hung in front of an electronic product with a display screen, and the same technical effect can be achieved.
The invention does not limit the electronic product with the display screen, and the display screens such as LCD, OLED and the like can be selected by the person skilled in the art to achieve the same technical effect.
On the other hand, the application of the long-range view display device in the short-range view object is claimed to be protected, and the long-range view display device is placed on the short-range object, so that the reflected light of the object can be seen long-range visually, and the purposes of reducing visual fatigue and protecting eyes are achieved. The close range object comprises a book.
Illustratively, the present invention provides an application of a long-range view display device in short-range reading, the long-range view display device comprising a semi-transparent semi-reflective layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and an optical adhesive layer between functional layers, which are sequentially laminated on a first cholesteric liquid crystal film layer (S30). The first cholesteric liquid crystal film layer and the second cholesteric liquid crystal film layer have opposite spiral structures.
The reflected light of the book reaches the first cholesteric liquid crystal film layer, and the first cholesteric liquid crystal film layer converts the reflected light into about 50% of right-handed circularly polarized light and about 50% of left-handed circularly polarized light, wherein the left/right-handed circularly polarized light can pass through the first cholesteric liquid crystal film layer, and the propagation path of the left/right-handed circularly polarized light after passing through the first cholesteric liquid crystal film layer is consistent with the light propagation path of the L/R100 in the long-range display panel. The right/left circularly polarized light reflected by the first cholesteric liquid crystal film layer is reflected again by the image light emitting device unit and then converted into left/right circularly polarized light, and the left/right circularly polarized light can pass through the first cholesteric liquid crystal film layer, and the propagation path of the right/left circularly polarized light is consistent with the light propagation path of the L/R100 in the long-range display panel.
After the optical path is adopted, the imaging virtual distance of the near object is far from reality in vision, so that the human eye lens, ciliary body and other organism tissues are in a relatively relaxed state, and the virtual imaging focus of the near object can be more than 3m under the condition that the actual distance between the human eye and the near object is less than 1m by adjusting the emergent light angle of the semi-transparent semi-reflecting layer.
The vast majority of light emitted by the short-distance object or the electronic product with the display screen of the long-distance display device can reach the visual angle side. Meanwhile, after the light is reflected by the multiple functional layers in the light transmission process, the light transmission direction of the light emitted to the visual angle side is adjusted when the light is closer to an object or an electronic product with a display screen, and the image is made to be far-sighted visually, namely, the emergent image of the object or the electronic product with the display screen is made to be virtual focus at a longer distance.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects or advantages:
in the long-range display panel provided by the invention, most of light emitted by the image light-emitting device unit can reach the visual angle side, the light propagation direction of the light emitted to the visual angle side after the light emitted by the image light-emitting device unit is transmitted and reflected by the multilayer functional films is adjusted, so that the emitted image of the image light-emitting device unit is in a far vision state, a virtual focus is generated on the emitted image of the image light-emitting device unit at a far distance under the condition that the viewing distance between the image light-emitting device unit and a person is not changed, and the visual distance between the image viewed by the person is more than 3m.
The long-range view display panel provided by the invention can hyperopic images observed by human eyes, so that tissues such as crystalline lenses, ciliary bodies and surrounding muscles in human eye structures are in a relatively relaxed state, thereby realizing the aim of reducing visual fatigue and protecting eyes. According to the long-range view display panel provided by the invention, the blink frequency is reduced by 51.69% under the condition of watching a video for 1h, and the temporary vision degradation degree is reduced by 88.48%; the blink frequency is reduced by 59.66 percent under the condition of watching the video for 2 hours, and the temporary vision reduction degree is reduced by 93.18 percent; the blink time was reduced by 62.91% and the temporary vision loss was reduced by 94.46% under the condition of viewing the video for 3 hours
The long-range view display device provided by the invention can be applied to the existing electronic products with display screens, and can also achieve the purposes of reducing visual fatigue and protecting eyes; the long-range view display device provided by the invention can also be applied to close-range objects, so that the virtual imaging focus of the close-range objects is more than 3m, and the purposes of reducing visual fatigue and protecting eyes are achieved.
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 embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic diagram of a long-range view display panel and its optical path. S10, an image light emitting device unit; s100, visual virtual images; s20, a first phase delay layer; s30, a first cholesteric liquid crystal film layer; s40, a semi-transparent and semi-reflective layer; s50, a second cholesteric liquid crystal film layer; s60, a protective layer; s is linear polarized light with the vibration direction parallel to the transmission axis of the linear polarizing plate; r is right circularly polarized light; l is left circularly polarized light.
Fig. 2 is a schematic diagram of a perspective display panel and its optical path. S10, an image light emitting device unit; s100, visual virtual images; s30, a first cholesteric liquid crystal film layer; s40, a semi-transparent and semi-reflective layer; s50, a second cholesteric liquid crystal film layer; s60, a protective layer; r is right circularly polarized light; l is left circularly polarized light.
Fig. 3 is a schematic diagram of a perspective display panel and its optical path. S10, an image light emitting device unit; s100, visual virtual images; s20, a first phase delay layer; s40, a semi-transparent and semi-reflective layer; s50, a second cholesteric liquid crystal film layer; s60, a protective layer; s70, absorbing the linear polarizing layer; s is linear polarized light with the vibration direction parallel to the transmission axis of the linear polarizing plate; p is linearly polarized light perpendicular to S light in the plane; r is right circularly polarized light; l is left circularly polarized light.
Fig. 4 is a schematic diagram of a perspective display panel and its optical path. S10, an image light emitting device unit; s100, visual virtual images; s20, a first phase delay layer; s30, a first cholesteric liquid crystal film layer; s40, a semi-transparent and semi-reflective layer; s60, a protective layer; s80, a reflective linear polarizing layer; s21, a second phase delay layer; s22, a third phase delay layer; s is linear polarized light with the vibration direction parallel to the transmission axis of the linear polarizing plate; p is linearly polarized light perpendicular to S light in the plane; r is right circularly polarized light; l is left circularly polarized light.
Fig. 5 is a schematic diagram of an application of a long-range view display device in short-range reading and an optical path thereof. S0, books or other close-range objects; s00, visual virtual images; s30, a first cholesteric liquid crystal film layer; s40, a semi-transparent and semi-reflective layer; s50, a second cholesteric liquid crystal film layer; s60, a protective layer; r is right circularly polarized light; l is left circularly polarized light.
Detailed Description
The technical aspects of the present invention will now be described with reference to examples, but the present invention is not limited to the following examples. The experimental methods and the detection methods described in the following examples are all conventional methods unless otherwise specified; the reagents and materials are commercially available unless otherwise specified.
Example 1
The embodiment provides a long-range view display panel.
The structure and the light propagation path of the optical adhesive layer are shown in fig. 1, and the optical adhesive layer comprises a first phase retardation layer (S20), a first cholesteric liquid crystal film layer (S30), a semi-transparent semi-reflective layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and the functional layers which are sequentially laminated on an image light emitting device unit (S10). The light emitted from the image light emitting device unit (S10) is linearly polarized light. The first cholesteric liquid crystal film layer (S30) may transmit left circularly polarized light and reflect right circularly polarized light, and the second cholesteric liquid crystal film layer (S50) may transmit right circularly polarized light and reflect left circularly polarized light. The adjustable wavelength range of the cholesteric liquid crystal film layer is 380-760 nm. The first cholesteric liquid crystal film (S30) has a thickness of 25 μm and the second cholesteric liquid crystal film (S50) has a thickness of 35 μm. The first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) are used for regulating and controlling the pitch of light with a certain wavelength to be 15.
As can be seen from fig. 1, the light propagation path of the long-range display panel is: the linear polarized light emitted from the image light emitting device unit (S10) passes through the first phase retardation layer (S20), the linear polarized light is converted into left circularly polarized light, the left circularly polarized light reaches the transflective layer (S40) through the first cholesteric liquid crystal film layer (S30), the reflected portion of the transflective layer (S40) is denoted as R200, the transmitted portion is denoted as L100, the L100 is reflected by the second cholesteric liquid crystal film layer (S50) back to the transflective layer (S40), the reflected portion of the transflective layer is denoted as R110, the transmitted portion is denoted as L110, and the R110 can reach the viewing angle side through the second cholesteric liquid crystal film layer (S50) and the protective layer (S60). R200 is reflected by the first cholesteric liquid crystal film layer (S30) back to the transflective layer (S40), wherein the transmitted portion is denoted as R210, the reflected portion is denoted as L210, and R210 is able to reach the viewing angle side through the second cholesteric liquid crystal film layer (S50) and the protective layer (S60). The L210 and L110 pass through the first cholesteric liquid crystal film layer (S30) and then are reflected by the reflective layer in the image light emitting device unit (S10), and the L100 light propagation path is repeated. Through the above optical path, most of light emitted from the image light emitting device unit (S10) can reach the viewing angle side.
R is right circularly polarized light, and L is left circularly polarized light.
After being reflected by the multiple functional layers for multiple times in the light propagation process, the light emitted to the visual angle side is adjusted compared with the light propagation direction emitted to the visual angle side by the single image light emitting device unit (S10), so that an image displayed by the image light emitting device unit (S10) observed at the visual angle side forms a virtual imaging focus at the rear part far from the image light emitting device unit (S10) at the visual angle side.
The long-range display panel prepared in this example was subjected to fatigue test, visual acuity reduction degree (temporal) test and virtual imaging distance measurement, and the test results are shown in table 1.
Example 2
The present embodiment provides a long-range view display panel, which has a structure similar to that of embodiment 1, and is different in that: the thickness of the first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) is 1 mu m, and the screw pitches for regulating and controlling light with a certain wavelength in the first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) are 2.
Example 3
The present embodiment provides a long-range view display panel, which has a structure similar to that of embodiment 1, and is different in that: the thicknesses of the first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) are 100 mu m, and the screw pitches for regulating and controlling light with a certain wavelength in the first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) are 30.
Example 4
The embodiment provides a long-range view display panel.
Comprises a first cholesteric liquid crystal film layer (S30), a semi-transparent semi-reflective layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and an optical adhesive layer between the functional layers, which are sequentially laminated on an image light emitting device unit (S10). The structure and light propagation path are shown in fig. 2. The light emitted from the image light emitting device unit (S10) is ordinary unpolarized light. The first cholesteric liquid crystal film layer (S30) may transmit left circularly polarized light and reflect right circularly polarized light, and the second cholesteric liquid crystal film layer (S50) may transmit right circularly polarized light and reflect left circularly polarized light. The adjustable wavelength range of the cholesteric liquid crystal film layer is 380-760 nm. The thicknesses and pitches of the first cholesteric liquid crystal film layer (S30) and the second cholesteric liquid crystal film layer (S50) are the same as in example 1.
As can be seen from fig. 2, the light propagation path of the long-range display panel is: the ordinary unpolarized light emitted from the image light emitting device unit (S10) first reaches the first cholesteric liquid crystal film layer (S30), the first cholesteric liquid crystal film layer (S30) converts the ordinary unpolarized light incident on the surface thereof into about 50% of right-handed circularly polarized light and about 50% of left-handed circularly polarized light, wherein the left-handed circularly polarized light can pass through the first cholesteric liquid crystal film layer (S30), and the propagation path of the left-handed circularly polarized light after passing through the first cholesteric liquid crystal film layer (S30) is identical to that of the L100 light in the long-view display panel of example 1. The right circularly polarized light reflected by the first cholesteric liquid crystal film layer (S30) is reflected again by the image light emitting device unit (S10) and then converted into left circularly polarized light, and the left circularly polarized light L100 light of example 1 can pass through the first cholesteric liquid crystal film layer (S30).
The long-range display panel prepared in this example was subjected to fatigue test, visual acuity reduction degree (temporal) test and virtual imaging distance measurement, and the test results are shown in table 1.
Example 5
The embodiment provides a long-range view display panel.
Comprises a linear polarizing layer (S70), a first phase delay layer (S20), a semi-transparent semi-reflective layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and an optical adhesive layer between the functional layers, which are sequentially laminated on an image light emitting device unit (S10). The structure and light propagation path are shown in fig. 3. The light emitted from the image light emitting device unit (S10) is ordinary unpolarized light. The first cholesteric liquid crystal film layer (S30) may transmit left circularly polarized light and reflect right circularly polarized light, and the second cholesteric liquid crystal film layer (S50) may transmit right circularly polarized light and reflect left circularly polarized light. The adjustable wavelength range of the cholesteric liquid crystal film layer is 380-760 nm. The thickness and pitch of the second cholesteric liquid crystal film layer (S50) were the same as in example 1.
As can be seen from fig. 3, the light propagation path of the long-range display panel is: the normal unpolarized light emitted from the image light emitting device unit (S10) first reaches the linear polarization layer (S70), wherein about 50% of the light having a polarization direction perpendicular to the transmission axis of the linear polarization layer (S70) is absorbed, and the remaining about 50% of the light having a polarization direction parallel to the transmission axis of the linear polarization layer (S70) can pass through the linear polarization layer (S70), denoted as P light, which is converted into left-circularly polarized light L after passing through the first phase retardation layer (S20), reaches the semi-transparent and semi-reflective layer (S40) where the transmission portion L1, denoted as R1, and the reflected portion is denoted as R1, and the propagation path of the L100 light in example 1 is repeated. R1 is converted into linear polarization having a polarization direction perpendicular to the transmission axis of the linear polarization layer (S70) by the phase delay layer (S20), and is absorbed by the linear polarization layer (S70).
The long-range display panel prepared in this example was subjected to fatigue test, visual acuity reduction degree (temporal) test and virtual imaging distance measurement, and the test results are shown in table 1.
Example 6
The embodiment provides a long-range view display panel.
The light-emitting device comprises a first phase retardation layer (S20), a first cholesteric liquid crystal film layer (S30), a semi-transparent semi-reflective layer (S40), a second phase retardation layer (S21), a reflective linear polarizing layer (S80), a third phase retardation layer (S22), a protective layer (S60) and optical adhesive layers among all functional layers, which are sequentially laminated on an image light-emitting device unit (S10). The structure and light propagation path are shown in fig. 4. The first cholesteric liquid crystal film layer (S30) may transmit left circularly polarized light and reflect right circularly polarized light. The light emitted from the image light emitting device unit (S10) is linearly polarized light. The thickness and pitch of the first cholesteric liquid crystal film layer (S30) are the same as in example 1.
As can be seen from fig. 4, the light propagation paths of the long-range display panel are: the linearly polarized light emitted from the image light emitting device unit (S10) is converted into left circularly polarized light through the first phase retardation layer (S20), reaches the semi-transparent semi-reflective layer (S40) through the first cholesteric liquid crystal film layer (S30), is denoted as L300 by the semi-transparent semi-reflective layer (S40), is denoted as R300 by the reflective part, is converted into linearly polarized light after passing through the second phase retardation layer (S21), is denoted as S01 by the reflective linear polarizing layer (S80), is converted into linearly polarized light after passing through the second phase retardation layer (S21), is denoted as S02 by the reflective linear polarizing layer (S80), is converted into left circularly polarized light after passing through the second phase retardation layer (S21), is denoted as L400 by the semi-transparent semi-reflective layer (S40), is denoted as R400 by the reflective part, is denoted as L410 by the reflective part, is converted into linearly polarized light after passing through the second phase retardation layer (S21), is converted into linearly polarized light after passing through the second phase retardation layer (S02) and is converted into linearly polarized light after passing through the second phase retardation layer (S21), is converted into linearly polarized light after passing through the second phase retardation layer (S02, is converted into linearly polarized light, passes through the three phase retardation layer (S02) and reaches the protective layer (S401) and passes through the three phase retardation layer (S02P 02, and is converted into linearly polarized light (S40). R300 is reflected back to the semi-transparent and semi-reflective layer (S40) through the first cholesteric liquid crystal film layer (S30), the transmitted part is marked as R310, R310 is converted into linear polarized light with the polarization direction perpendicular to S02 through the second phase retardation film layer (S21), the linear polarized light is marked as P03, the P03 can pass through the reflective linear polarized light layer (S80), and is converted into right-handed circularly polarized light through the third cholesteric liquid crystal film layer (S22), the circular polarized light is marked as R311, and the R311 reaches the viewing angle layer through the protective layer (S60).
The long-range display panel prepared in this example was subjected to fatigue test, visual acuity reduction degree (temporal) test and virtual imaging distance measurement, and the test results are shown in table 1.
Comparative example 1
The present comparative example provides a display panel including a single image light emitting device unit (S10). The light emitted from the image light emitting device unit (S10) is linearly polarized light.
The display panels prepared in this comparative example were subjected to fatigue test, visual acuity (temporal) test and virtual imaging distance measurement, and the test results are shown in table 1.
Table 1: display panel test data
The examples and comparative examples in table 1 were measured at the same brightness and the same viewing content, the experimental population was 18-60 years old, the number of participants was 100, 50 persons each, the distance between the eyes and the display device was 35-45 cm, and the number of participants was 5.0 or more in both naked eyes or by wearing glasses. The data in the above table are averages of the same test conditions of the number of participants, the number of blinks was measured by an Electrooculogram (EOG) recorder, and the temporary vision loss was measured by a moren SureSight vision screening instrument in the united states. The blink frequency is an important index for measuring the visual fatigue, the blink behavior can relieve the visual fatigue, and excessive blink frequency indicates that the eyes are in a relatively tired state.
As shown in table 1, the virtual imaging distance of the long-range display panel provided by the invention is more than 3m, the blink frequency during watching the video can be reduced, the degree of vision degradation (temporary) after watching the video is smaller, which indicates that the long-range display panel has a good eye protection effect, can relieve asthenopia, and simultaneously reduces the possibility of permanent vision degradation caused by temporary vision degradation for a long time. Tests show that the number of blinks of the long-range display panel provided by the invention is reduced by 51.69% under the condition of watching video for 1h, and the temporary vision reduction degree is reduced by 88.48%; the blink frequency is reduced by 59.66 percent under the condition of watching the video for 2 hours, and the temporary vision reduction degree is reduced by 93.18 percent; the number of blinks was reduced by 62.91% and the degree of temporary vision loss was reduced by 94.46% under the 3h video viewing conditions.
Example 7
The embodiment provides a long-range view display device and application thereof in short-range view objects.
The long-range view display device comprises a semi-transparent semi-reflecting layer (S40), a second cholesteric liquid crystal film layer (S50), a protective layer (S60) and optical adhesive layers among all functional layers, which are sequentially laminated on the first cholesteric liquid crystal film layer (S30). The structure and light propagation path are shown in fig. 4. The first cholesteric liquid crystal film layer and the second cholesteric liquid crystal film layer have opposite spiral structures, the first cholesteric liquid crystal film layer (S30) can transmit left-handed circularly polarized light and reflect right-handed circularly polarized light, and the second cholesteric liquid crystal film layer (S50) can transmit right-handed circularly polarized light and reflect left-handed circularly polarized light.
As can be seen from fig. 5, the propagation path of the reflected light of the book coincides with the propagation path of the light emitted from the image light emitting device unit (S10) in embodiment 2.
The long-range view display device prepared in this example was subjected to a fatigue test, a visual acuity (temporal) reduction test, and a virtual imaging distance measurement, and the test results are shown in table 2.
Comparative example 2
In this comparative example, the distance between the book and the human eye was 40cm, and the fatigue test, the degree of visual deterioration (temporary) test, and the virtual imaging distance were measured, and the test results are shown in Table 2.
Table 2: display device test data
As can be seen from Table 2, the long-range view display device provided by the invention has an anti-fatigue effect and a vision protection effect when applied to a near-range view object, the virtual imaging distance of the long-range view display device provided by the invention is 4m, the blink frequency is reduced by 32.94% under the condition of reading books for 1h, and the temporary vision reduction degree is reduced by 60.00%; the blink frequency is reduced by 31.34% under the condition of reading for 2 hours, and the temporary vision reduction degree is reduced by 59.26%; the blink times are reduced by 31.60% under the condition of reading for 3 hours, and the temporary vision reduction degree is reduced by 72.94%.
The embodiments described above are some, but not all, embodiments of the invention. The detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments obtained without inventive effort by a person skilled in the art, which are related deductions and substitutions made by the person skilled in the art under the condition of the inventive concept, are within the scope of protection of the present invention.
Claims (10)
1. A long-range view display panel, comprising: an image light emitting device unit, a cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer, a protective layer and an optical adhesive layer between the functional layers;
the image light emitting device unit can emit normal unpolarized light or linearly polarized light;
the cholesteric liquid crystal film layer is a liquid crystal layer with a single rotation direction, and can transmit left-handed circularly polarized light and reflect right-handed circularly polarized light or transmit right-handed circularly polarized light and reflect left-handed circularly polarized light;
the semi-transparent and semi-reflective layer can transmit part of light and reflect the rest light;
the light emitted by the image light-emitting device unit passes through the multilayer functional films, and then is transmitted and reflected to be emitted to the light propagation direction of the visual angle side to be adjusted, so that single right-handed circularly polarized light or single left-handed circularly polarized light is obtained, and the emitted image of the image light-emitting device unit is visually hyperopic under the condition that the viewing distance between the image light-emitting device unit and a person is not changed.
2. The long-range display panel according to claim 1, comprising a first phase retardation layer, a first cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer, a second cholesteric liquid crystal film layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in the image light emitting device unit; the light emitted by the image light emitting device unit is linearly polarized light;
The first cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light; the second cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light;
the linear polarized light emitted by the image light emitting device unit is converted into left-handed circularly polarized light after passing through the first phase delay layer, the left-handed circularly polarized light reaches the half-transparent and half-reflecting layer after passing through the first cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as R200, the transmitting part is marked as L100, the L100 is reflected back to the half-transparent and half-reflecting layer by the second cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as R110, the R110 reaches the viewing angle side after passing through the second cholesteric liquid crystal film layer and the protecting layer;
the R200 is reflected back to the semi-transparent and semi-reflective layer by the first cholesteric liquid crystal film layer, the part transmitted by the semi-transparent and semi-reflective layer is denoted as R210, the part reflected by the semi-transparent and semi-reflective layer is denoted as L210, and the R210 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the view angle side;
The L110 and the L210 pass through the first cholesteric liquid crystal film layer and then are reflected by the reflecting layer in the image light emitting device unit, and then the L100 light propagation path is repeated;
or the first cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light; the second cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light;
the linear polarized light emitted by the image light emitting device unit is converted into right-handed circularly polarized light after passing through the first phase delay layer, the right-handed circularly polarized light reaches the half-transparent and half-reflecting layer after passing through the first cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as L200, the transmitting part is marked as R100, the R100 is reflected back to the half-transparent and half-reflecting layer by the second cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as L110, the L110 reaches the viewing angle side after passing through the second cholesteric liquid crystal film layer and the protecting layer;
the L200 is reflected back to the semi-transparent and semi-reflective layer by the first cholesteric liquid crystal film layer, the part transmitted by the semi-transparent and semi-reflective layer is denoted as L210, the part reflected by the semi-transparent and semi-reflective layer is denoted as R210, and the L210 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the view angle side;
The R110 and the R210 pass through the first cholesteric liquid crystal film layer and then are reflected by the reflecting layer in the image light emitting device unit, and then the R100 light propagation path is repeated;
r is right circularly polarized light, and L is left circularly polarized light.
3. The long-range display panel according to claim 1, comprising a first cholesteric liquid crystal film layer, a semi-transparent semi-reflective layer, a second cholesteric liquid crystal film layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated on the image light emitting device unit; the light emitted by the image light emitting device unit is ordinary unpolarized light;
the first cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light; the second cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light;
the common unpolarized light emitted by the image light emitting device unit is converted into right-handed circularly polarized light and left-handed circularly polarized light after passing through the first cholesteric liquid crystal film layer, wherein the left-handed circularly polarized light reaches the half-transparent half-reflecting layer after passing through the first cholesteric liquid crystal film layer, the color of the left-handed circularly polarized light is denoted as R200 when the rotation direction of the half-transparent half-reflecting layer is changed, the color of the transmitted part is denoted as L100 when the L100 is reflected back to the half-transparent half-reflecting layer by the second cholesteric liquid crystal film layer, the color of the left-handed circularly polarized light is denoted as R110 when the rotation direction of the half-transparent half-reflecting layer is changed, the color of the R110 reaches the viewing angle side after passing through the second cholesteric liquid crystal film layer and the protective layer;
The R200 is reflected back to the semi-transparent and semi-reflective layer by the first cholesteric liquid crystal film layer, the part transmitted by the semi-transparent and semi-reflective layer is denoted as R210, the part reflected by the semi-transparent and semi-reflective layer is denoted as L210, and the R210 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the view angle side;
the L110 and the L210 pass through a first cholesteric liquid crystal film layer and then are reflected by a reflecting layer in an image light-emitting device unit, the rotation direction of the L110 and the L210 is changed into right-handed circularly polarized light, the right-handed circularly polarized light is reflected by the first cholesteric liquid crystal film layer and reaches the image light-emitting device unit, the rotation direction of the L110 and the L210 is changed into left-handed circularly polarized light after being reflected by the image light-emitting device unit, and the left-handed circularly polarized light repeats the L100 light propagation path;
the right-handed circularly polarized light obtained after the common unpolarized light emitted by the image light-emitting device unit passes through the first cholesteric liquid crystal film layer is reflected back to the image light-emitting device unit by the first cholesteric liquid crystal film layer, the rotation direction is changed into left-handed circularly polarized light after being reflected by the image light-emitting device unit, and the left-handed circularly polarized light repeats the L100 light propagation path;
or the first cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light; the second cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light;
The linear polarized light emitted by the image light emitting device unit is converted into right-handed circularly polarized light after passing through the first phase delay layer, the right-handed circularly polarized light reaches the half-transparent and half-reflecting layer after passing through the first cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as L200, the transmitting part is marked as R100, the R100 is reflected back to the half-transparent and half-reflecting layer by the second cholesteric liquid crystal film layer, the change of the rotation direction of the reflecting part of the half-transparent and half-reflecting layer is marked as L110, the L110 reaches the viewing angle side after passing through the second cholesteric liquid crystal film layer and the protecting layer;
the L200 is reflected back to the semi-transparent and semi-reflective layer by the first cholesteric liquid crystal film layer, the part transmitted by the semi-transparent and semi-reflective layer is denoted as L210, the part reflected by the semi-transparent and semi-reflective layer is denoted as R210, and the L210 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the view angle side;
the R110 and the R210 pass through a first cholesteric liquid crystal film layer and then are reflected by a reflecting layer in an image light-emitting device unit, the rotation direction of the R110 and the R210 is changed into left-handed circularly polarized light, the left-handed circularly polarized light is reflected by the first cholesteric liquid crystal film layer and reaches the image light-emitting device unit, the rotation direction of the R110 and the R210 is changed into right-handed circularly polarized light after being reflected by the image light-emitting device unit, and the right-handed circularly polarized light repeats the R100 light propagation path;
The left circularly polarized light obtained after the common unpolarized light emitted by the image light emitting device unit passes through the first cholesteric liquid crystal film layer is reflected back to the image light emitting device unit by the first cholesteric liquid crystal film layer, the rotation direction is changed into right circularly polarized light after the left circularly polarized light is reflected by the image light emitting device unit, and the right circularly polarized light repeats the R100 light propagation path;
r is right circularly polarized light, and L is left circularly polarized light.
4. The long-range display panel according to claim 1, comprising a linear polarizing layer, a first phase retardation layer, a semi-transparent semi-reflective layer, a second cholesteric liquid crystal film layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in the image light emitting device unit; the light emitted by the image light emitting device unit is ordinary unpolarized light;
the second cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light;
the common unpolarized light emitted by the image light emitting device unit reaches the linear polarizing layer, wherein the light with the polarization direction perpendicular to the transmission axis of the linear polarizing layer is absorbed, the light with the residual polarization direction parallel to the transmission axis of the linear polarizing layer passes through the linear polarizing layer and then passes through the first phase retardation layer to be converted into left-handed circularly polarized light, the left-handed circularly polarized light reaches the half-transmitting layer, wherein the transmission part is denoted as L1, the reflected part is denoted as R1, the L1 is reflected back to the half-transmitting layer by the second cholesteric liquid crystal film layer, the rotation direction is changed by the half-transmitting layer to be denoted as R11, the transmission part of the half-transmitting layer is denoted as L11, and the R11 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the viewing angle side;
The R1 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer and is absorbed by the linear polarized light layer;
the L11 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer, and is absorbed by the linear polarized light layer;
or the second cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light;
the common unpolarized light emitted by the image light emitting device unit reaches the linear polarizing layer, wherein the light with the polarization direction perpendicular to the transmission axis of the linear polarizing layer is absorbed, the light with the residual polarization direction parallel to the transmission axis of the linear polarizing layer passes through the linear polarizing layer and then passes through the first phase retardation layer to be converted into right-handed circularly polarized light, the right-handed circularly polarized light reaches the half-transmitting layer, wherein the transmission part is denoted as R1, the reflected part is denoted as L1, the R1 is reflected back to the half-transmitting layer by the second cholesteric liquid crystal film layer, the rotation direction is changed by the half-transmitting layer to be denoted as L11, the transmission part of the half-transmitting layer is denoted as R11, and the L11 passes through the second cholesteric liquid crystal film layer and the protective layer and then reaches the viewing angle side;
The L1 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer, and is absorbed by the linear polarized light layer;
the R11 is converted into linear polarized light with the polarization direction perpendicular to the transmission axis of the linear polarized light layer after passing through the first phase delay layer and is absorbed by the linear polarized light layer;
r is right circularly polarized light, and L is left circularly polarized light.
5. The long-range display panel according to claim 1, comprising a first phase retardation layer, a first cholesteric liquid crystal film layer, a transflective layer, a second phase retardation layer, a reflective linear polarizing layer, a third phase retardation layer, a protective layer, and an optical adhesive layer between functional layers, which are sequentially laminated in the image light emitting device unit; the light emitted by the image light emitting device unit is linearly polarized light;
the first cholesteric liquid crystal film layer can transmit left circularly polarized light and reflect right circularly polarized light;
the linear polarized light emitted by the image light emitting device unit is converted into left-handed circularly polarized light after passing through a first phase delay layer, the left-handed circularly polarized light is converted into L300 by a transmission part of the semi-transparent and semi-reflective layer after passing through a first cholesteric liquid crystal film layer, the L300 is converted into linear polarized light after passing through the second phase delay layer into S01, the S01 is reflected back to the second phase delay layer by the reflective linear polarization layer, the linear polarized light is converted into S02 after passing through the second phase delay layer, the S02 is reflected by the reflective linear polarization layer and is converted into L400 after passing through the second phase delay layer, the L400 is converted into right-handed circularly polarized light after being converted into R400 by the rotation direction of the reflection part of the semi-transparent and semi-reflective layer, the transmission part of the L400 is converted into L410, the linear polarized light after being converted into the linear polarized light perpendicular to the S02 after passing through the second phase delay layer is converted into the linear polarized light after passing through the second phase delay layer into the S02 is converted into the linear polarized light perpendicular to the S02, and the linear polarized light can pass through the second phase delay layer into the R401, and the linear polarized light can pass through the three-phase delay layer is converted into the R401;
The R300 is changed into right-handed circularly polarized light by the reflection part of the semi-transparent and semi-reflecting layer after passing through the first cholesteric liquid crystal film layer, the R310 is converted into linear polarized light with the polarization direction perpendicular to the S02 by the second phase retardation film layer and is marked as P03, the P03 can pass through the reflection type linear polarized light layer and is converted into right-handed circularly polarized light after passing through the third phase retardation layer and is marked as R311, and the R311 reaches the view angle layer by the protective layer;
or the first cholesteric liquid crystal film layer can transmit right circularly polarized light and reflect left circularly polarized light;
the linearly polarized light emitted by the image light emitting device unit is converted into right-handed circularly polarized light after passing through a first phase delay layer, the right-handed circularly polarized light is converted into R400 after passing through a first cholesteric liquid crystal film layer, the reflected light is converted into L300 by a semi-transparent and semi-reflective layer transmission part, the R300 is converted into linearly polarized light after passing through a second phase delay layer into S03, the S03 is reflected back to the second phase delay layer by the reflective linear polarizing layer, the linearly polarized light is converted into S04 after passing through the second phase delay layer, the S04 is reflected by the reflective linear polarizing layer and passes through the second phase delay layer, the circularly polarized light is converted into R400 after passing through the second phase delay layer, the R400 is converted into left-handed circularly polarized light after being converted into L400 by the semi-transparent and semi-reflective layer transmission part, the L400 is converted into R410 by the semi-transparent and semi-reflective layer transmission part, the L400 is converted into linearly polarized light perpendicular to the S04 after passing through the second phase delay layer into P04, and can pass through the second phase delay layer into the linearly polarized light to be converted into L04 by the linear polarized light, and pass through the second phase delay layer 401 into the linearly polarized light;
The L300 is changed into left-handed circularly polarized light by the semi-transparent and semi-reflective layer after passing through the first cholesteric liquid crystal film layer, the L310 is converted into linear polarized light with the polarization direction perpendicular to the S04 by the second phase retardation film layer and is marked as P05, the P05 can pass through the reflective linear polarized layer and is converted into left-handed circularly polarized light by the third phase retardation layer and is marked as L311, and the L311 reaches the view angle layer by the protective layer;
the R is right-handed circularly polarized light, the L is left-handed circularly polarized light, the S is linearly polarized light with the vibration direction parallel to the transmission axis of the linear polarizing plate, and the P is linearly polarized light perpendicular to the S light in the plane.
6. The long-range view display panel according to claim 1, wherein the thickness of the cholesteric liquid crystal film layer is 1 to 100 μm;
the cholesteric liquid crystal film layer is used for regulating and controlling the thickness of the screw pitch of light with a certain wavelength in the light propagation direction to be 2-30 screw pitches.
7. A long-range view display apparatus comprising the long-range view display panel according to any one of claims 1 to 5, excluding the image light emitting device unit.
8. Use of the distant view display device according to claim 7 in an electronic product with a display screen, wherein the display screen comprises a display screen such as LCD, OLED, etc.
9. Use of the vision display device of claim 7 in a near vision object, wherein the object of the near vision object comprises a book.
10. Use according to any one of claims 8 to 9, characterized in that the image viewed by the human eye is visually distant by > 3m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311097053.5A CN117170134A (en) | 2023-08-29 | 2023-08-29 | Distant view display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311097053.5A CN117170134A (en) | 2023-08-29 | 2023-08-29 | Distant view display panel and display device |
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| CN117170134A true CN117170134A (en) | 2023-12-05 |
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| CN202311097053.5A Pending CN117170134A (en) | 2023-08-29 | 2023-08-29 | Distant view display panel and display device |
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