CN111258109A - Display device - Google Patents
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- CN111258109A CN111258109A CN202010165524.1A CN202010165524A CN111258109A CN 111258109 A CN111258109 A CN 111258109A CN 202010165524 A CN202010165524 A CN 202010165524A CN 111258109 A CN111258109 A CN 111258109A
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- liquid crystal
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/868—Arrangements for polarized light emission
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Abstract
The application is suitable for the technical field of display, and provides a display device which comprises a display panel and a liquid crystal wave plate structure, wherein the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel, the polarization direction of linearly polarized light emergent from the display panel is adjusted through the liquid crystal wave plate structure, when the linearly polarized light emergent from the display panel is adjusted into circularly polarized light, the component of the circularly polarized light emergent from the display panel is always consistent with the polarization direction of polarized sunglasses or 3D glasses worn by a user, the user can clearly see display contents, and the brightness and the color of the display panel are uniform and have no difference; when the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel, the polarization direction of the linearly polarized light emitted by the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses worn by the user, and the user can clearly see the display content without changing the brightness of the display panel.
Description
Technical Field
The application belongs to the technical field of display, and particularly relates to a display device.
Background
With the coming of the internet era, display devices such as smart phones, tablet computers, smart bracelets, electronic books (electronic books), personal digital assistants and the like are diversified, and various personalized functional services are brought to people. The design of the light-emitting mode of the display panel of the display device determines the polarization direction of the light emitted by the display panel.
At present, the emergent light of the display panel of the display device is mostly linearly polarized light. In a strong light environment, many users have a habit of wearing polarized sunglasses in order to protect eyes; when watching a 3D movie, the user needs to wear 3D glasses. Both polarized sunglasses and 3D glasses essentially control the content or intensity of light entering the eye through a polarizer. When a user wears the polarized sunglasses or the 3D glasses to watch the display panel of the display device, the situation that the polarization direction of the polarized sunglasses or the 3D glasses is inconsistent with the polarization direction of linearly polarized light emitted by the display panel, the display content cannot be clearly seen by the user, and the user experience is seriously influenced.
Disclosure of Invention
An object of the application is to provide a display device, can adjust the polarization direction of the linear polarization light that display device's display panel goes out for when the user wears polarization sunglasses or 3D glasses and watches display device's display panel, can see clearly the display content.
The embodiment of the application provides a display device, which comprises a display panel and a liquid crystal wave plate structure;
the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel;
the liquid crystal wave plate structure is used for adjusting the polarization direction of the linearly polarized light emitted by the display panel so as to adjust the linearly polarized light emitted by the display panel into circularly polarized light, or the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel.
In one embodiment, the display panel includes a linear polarizer;
the liquid crystal wave plate structure is arranged in the light ray emergent direction of the linear polaroid and covers the linear polaroid;
the liquid crystal wave plate structure is used for accessing a fixed voltage signal to form an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer, so that linearly polarized light emitted by the linear polarizer is adjusted into circularly polarized light.
In one embodiment, the display device further comprises a human-computer interaction device;
the human-computer interaction device is used for:
receiving a polarization state adjusting instruction of a user, and triggering the liquid crystal wave plate structure to access a fixed voltage signal according to the polarization state adjusting instruction to form an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer.
In one embodiment, the liquid crystal wave plate structure is used for receiving a variable voltage signal and forming 1/2 liquid crystal wave plates with optical axis directions changing along with the direction of the display panel, so that the polarization direction of linearly polarized light emitted by the display panel is adjusted according to the direction of the display panel.
In one embodiment, the liquid crystal wave plate structure is specifically configured to access a variable voltage signal to form a 1/2 liquid crystal wave plate with an optical axis direction changing angle of 1/2 that is a direction changing angle of the display panel.
In one embodiment, the display panel includes a linear polarizer;
the liquid crystal wave plate structure is arranged in the light ray emergent direction of the linear polaroid and covers the linear polaroid;
the liquid crystal wave plate structure is used for accessing a first voltage signal when the direction of the display panel is a first direction, and an 1/2 liquid crystal wave plate with the optical axis direction consistent with the polarization direction of the linear polarizer is formed;
the liquid crystal wave plate structure is used for accessing a second voltage signal when the direction of the display panel is a second direction, and an 1/2 liquid crystal wave plate with an included angle between the optical axis direction and the polarization direction of the linear polarizer equal to 45 degrees is formed;
wherein the first direction is perpendicular to the second direction.
In one embodiment, the display device further comprises a human-computer interaction device;
the human-computer interaction device is used for:
receiving a polarization direction adjusting instruction of a user, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the polarization direction adjusting instruction, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
In one embodiment, the liquid crystal wave plate structure is a liquid crystal light adjusting film.
In one embodiment, the display device further comprises a direction sensor;
the direction sensor is used for sensing the direction of the display panel, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the direction of the display panel, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
In one embodiment, the display panel is an OLED panel or an LCD panel;
the OLED panel comprises a linear polarizer, an 1/4 wave plate and an OLED anode layer which are sequentially arranged;
the LCD panel comprises a linear polarizer, a liquid crystal box, another linear polarizer and a backlight module which are arranged in sequence.
The embodiment of the application provides a display device comprising a display panel and a liquid crystal wave plate structure, wherein the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel, the polarization direction of linearly polarized light emergent from the display panel is adjusted through the liquid crystal wave plate structure, and when the linearly polarized light emergent from the display panel is adjusted into circularly polarized light, when a user wears polarized sunglasses or 3D glasses to watch the display panel from any angle, the component of the circularly polarized light emergent from the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, the user can clearly see display contents, and the brightness and the color of the display panel are uniform and have no difference; when the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel, when a user wears the polarized sunglasses or the 3D glasses to watch the display panel from any angle, the polarization direction of the linearly polarized light emitted by the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, and the user can clearly see the display content without changing the brightness of the display panel.
Drawings
Fig. 1 is a schematic structural diagram of an LCD panel according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an OLED panel provided in an embodiment of the present application;
fig. 3 is a schematic view of a first structure of a display device according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating a second structure of a display device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a third display device according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a fourth structure of a display device according to an embodiment of the present application;
fig. 7 is a schematic diagram illustrating a fifth structure of a display device according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of a sixth structure of a display device according to an embodiment of the present application.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
As shown in fig. 1, an LCD (Liquid Crystal Display) panel 100 includes a linear polarizer 101, a Liquid Crystal cell 102, another linear polarizer 103, and a backlight module 104, which are sequentially disposed.
In application, the linear polarizer can be a polarized glass lens or a polarized resin lens with a linear polarization function according to actual needs. The liquid crystal cell is also called liquid crystal display panel or liquid crystal display device, and is formed by plating transparent conductive film on the inner sides of two oppositely placed float glass substrates containing sodium and low-calcium to form electrodes, coating an orientation film capable of aligning liquid crystal molecules in a certain direction on the surfaces of the electrodes according to different display modes, and injecting liquid crystal between the two glass substrates and sealing. An electric field can be formed by applying an external voltage between the electrodes, so that the arrangement state of liquid crystal molecules in the liquid crystal cell is changed under the action of the electric field, and the light transmittance of the liquid crystal cell is changed. The backlight module mainly comprises a Light source, a Light guide plate, an optical film, a plastic frame, and the like, and can select types of backlight sources such as Electroluminescence (EL), Cold Cathode Fluorescent Lamp (CCFL), Light Emitting Diode (LED), and the like according to actual needs.
The LCD panel 100 shown in fig. 1 operates on the following principle: after light rays emitted by the backlight module 104 sequentially pass through the linear polarizer 101, the liquid crystal box 102 and the linear polarizer 103, emergent light rays are linearly polarized light; wherein, the dotted arrow direction is the light transmission direction.
Fig. 1 is merely an example of the LCD panel, and does not constitute a limitation on the structure of the LCD panel, and the LCD panel may further include other functional structures, or be modified on the basis of fig. 1.
As shown in fig. 2, the present embodiment provides an OLED (organic light-Emitting display) panel 200, which includes a linear polarizer 201, an 1/4 wave plate 202, and an OLED anode layer 203; wherein, the dotted arrow direction is the light transmission direction.
In application, the linear polarizer can be a polarized glass lens or a polarized resin lens with a linear polarization function according to actual needs. 1/4 the wave plate can be a birefringent single crystal wave plate made of birefringent crystals such as crystal and calcite, a birefringent single crystal wave plate made of materials such as mica plate, cellophane and polyvinyl alcohol, or an optically active material. The anode layer of an OLED is usually made of Indium Tin Oxide (ITO).
The operating principle of the OLED panel 200 shown in fig. 2 is: ambient light passes through the linear polarizer 201 and becomes linearly polarized light, passes through the 1/4 wave plate 202 with the optical axis direction forming an angle of 45 degrees with the polarization direction of the linear polarizer and becomes circularly polarized light, the circularly polarized light is reflected by the metal cathode layer (not shown in fig. 2), the rotation direction is changed to be opposite to the original direction (for example, the left circularly polarized light is changed into the right circularly polarized light), passes through the 1/4 wave plate 202 again, becomes linearly polarized light with the polarization direction perpendicular to the linear polarizer, and cannot be emitted from the linear polarizer; the light emitted from the anode layer 203 of the OLED passes through the 1/4 wave plate 202, passes through the linear polarizer 201, and is linearly polarized and emitted.
Fig. 2 is merely an example of the OLED panel, and does not limit the structure of the OLED panel, and the OLED panel necessarily further includes other functional structures such as a substrate, a metal cathode layer, a hole injection layer, an electron injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and a light emitting layer, or is modified based on fig. 2.
The embodiment of the application provides a display device, which comprises a display panel and a liquid crystal wave plate structure;
the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel;
the liquid crystal wave plate structure is used for adjusting the polarization direction of the linearly polarized light emitted by the display panel so as to adjust the linearly polarized light emitted by the display panel into circularly polarized light, or the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel.
In application, the display device may be a mobile terminal such as a smart phone, a tablet computer, a smart band, an electronic book, a personal digital assistant, or any other display device that has a problem that a user cannot see display content clearly or the brightness of the display panel is reduced due to the fact that the polarization direction of the polarized sunglasses or the 3D glasses is not consistent with the polarization direction of the linearly polarized light emitted from the display panel, for example, a display, a television, a multimedia display screen, or the like.
In application, the Display panel may be an LCD panel or an OLED panel in the above embodiments, or may be another type of Display panel whose emergent light is linearly polarized light, for example, a liquid crystal Display panel based on a TFT-LCD (thin film Transistor liquid crystal Display) technology, a Quantum dot light Emitting diode Display panel based on a QLED (Quantum dot light Emitting diode) technology, a curved Display panel, or the like. Further, the display panel may further include a touch panel covering the display panel, and the touch panel detects a touch operation thereon or nearby, and transmits the touch operation to the processor to determine the type of the touch event, and then the processor provides a corresponding visual output on the display panel according to the type of the touch event. The touch panel and the display panel can be used as two independent components to realize the input and output functions of the terminal equipment, and can also be integrated to realize the input and output functions of the terminal equipment. In application, the liquid crystal wave plate structure may be an optical structure for adjusting linearly polarized light emitted from the display panel into circularly polarized light, for example, a 1/4 liquid crystal wave plate implemented based on a liquid crystal dimming principle and having a function of 1/4 wave plate. The liquid crystal wave plate structure may be an optical structure for adjusting the polarization direction of linearly polarized light emitted from the display panel according to the display direction of the display panel, for example, a 1/2 liquid crystal wave plate realized based on the liquid crystal dimming principle having the function of 1/2 wave plate. The liquid crystal wave plate is based on the principle that a voltage signal with a voltage difference is applied between an upper electrode plate and a lower electrode plate of the liquid crystal wave plate to form an electric field, liquid crystal molecules positioned between the upper electrode plate and the lower electrode plate of the liquid crystal wave plate deflect under the action of the electric field, so that optical phase delay is generated on light, and the polarization direction of linearly polarized light emitted by a display panel is changed. Through precise thickness control, the liquid crystal wave plate can have the functions of an 1/4 wave plate or a 1/2 wave plate.
The embodiment of the application provides a display device comprising a display panel and a liquid crystal wave plate structure, wherein the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel, the polarization direction of linearly polarized light emergent from the display panel is adjusted through the liquid crystal wave plate structure, and when the linearly polarized light emergent from the display panel is adjusted into circularly polarized light, when a user wears polarized sunglasses or 3D glasses to watch the display panel from any angle, the component of the circularly polarized light emergent from the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, the user can clearly see display contents, and the brightness and the color of the display panel are uniform and have no difference; when the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel, when a user wears the polarized sunglasses or the 3D glasses to watch the display panel from any angle, the polarization direction of the linearly polarized light emitted by the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, and the user can clearly see the display content without changing the brightness of the display panel.
As shown in FIG. 3, in one embodiment, the display panel is the LCD panel 100 of FIG. 1;
the liquid crystal wave plate structure 1 is arranged in the light ray outgoing direction of the linear polarizer 101 and covers the linear polarizer 101;
the liquid crystal wave plate structure 1 is used for receiving a fixed voltage signal, and forms an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer 101, so as to adjust the linearly polarized light emitted through the linear polarizer 101 into circularly polarized light.
As shown in fig. 4, in one embodiment, the display panel is the OLED panel 200 of fig. 2;
the liquid crystal wave plate structure 1 is arranged in the light ray outgoing direction of the linear polarizer 201 and covers the linear polarizer 201;
the liquid crystal wave plate structure 1 is used for receiving a fixed voltage signal, and forms an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer 201, so as to adjust the linearly polarized light emitted through the linear polarizer 201 into circularly polarized light.
In application, the fixed voltage signal comprises two voltage signals with fixed voltage difference, the upper electrode plate and the lower electrode plate of the liquid crystal wave plate structure are respectively connected with one voltage signal, and the voltage difference between the two voltage signals forms an electric field, so that liquid crystal molecules in the liquid crystal wave plate structure deflect under the action of the electric field, optical phase delay is generated on light, the polarization direction of linearly polarized light emitted by the display panel is changed, and the liquid crystal wave plate structure can have 1/4 wave plate functions through accurate thickness control. The fixed voltage signal may be output through a power board or a processor of the display device. The liquid crystal wave plate structure may specifically be a liquid crystal light adjusting film having the 1/4 liquid crystal wave plate function.
In one embodiment, the display device further comprises a human-computer interaction device;
the human-computer interaction device is used for:
receiving a polarization state adjusting instruction of a user, and triggering the liquid crystal wave plate structure to access a fixed voltage signal according to the polarization state adjusting instruction to form an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer.
In application, a user can control the working state of the liquid crystal wave plate structure through a man-machine interaction device of the display device according to actual needs. The human-computer interaction device can comprise a touch display screen, a touch panel, a key, a voice control device, a gesture control device and the like. The man-machine interaction device can be connected with a power panel or a processor of the display device, and when a user performs touch operation, pressing operation, voice control operation or gesture control operation on the display device, the power panel or the processor receives the polarization state adjusting instruction and applies a fixed voltage signal to the liquid crystal wave plate structure. When a polarization state adjusting instruction of a receiving user is not received, the application of a fixed voltage signal to the liquid crystal wave plate structure can be stopped, the voltage accessed by the liquid crystal wave plate structure is 0, the liquid crystal wave plate structure is in a transparent state, the optical axis direction is parallel to the polarization direction of the linear polarization plate, and the polarization state of linearly polarized light emitted by the display panel is not changed.
In the structures shown in fig. 3 and 4, the linearly polarized light emitted by the display panel is adjusted to be circularly polarized light through the 1/4 liquid crystal wave plate, so that when a user wears the polarized sunglasses or the 3D glasses to view the display panel from any angle, the component of the circularly polarized light emitted by the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, the user can clearly see the display content, the brightness and the color of the display panel are uniform and have no difference, and whether the polarization state of the linearly polarized light emitted by the display panel is adjusted or not can be determined according to the actual needs of the user.
In one embodiment, the liquid crystal wave plate structure is used for receiving a variable voltage signal and forming 1/2 liquid crystal wave plates with optical axis directions changing along with the direction of the display panel, so that the polarization direction of linearly polarized light emitted by the display panel is adjusted according to the direction of the display panel.
In application, the liquid crystal wave plate structure can be connected with a variable voltage signal, the variable voltage signal comprises two voltage signals with voltage difference, the upper electrode plate and the lower electrode plate of the liquid crystal wave plate structure are respectively connected with one voltage signal, and the voltage difference between the two voltage signals forms an electric field, so that liquid crystal molecules in the liquid crystal wave plate structure deflect under the action of the electric field, optical phase delay is generated on light, and the polarization direction of linearly polarized light emitted by the display panel is changed. The deflection angle of liquid crystal molecules in the liquid crystal wave plate structure can be changed by changing the voltage difference of the accessed variable voltage signal, so that the optical phase delay effect of the liquid crystal wave plate structure is changed, and the adjustment effect of the polarization direction of linearly polarized light emitted by the display panel is changed. Through accurate thickness control, the liquid crystal wave plate structure can have the function of an 1/2 wave plate. 1/2 the thickness of the liquid crystal waveplate is twice that of 1/4 liquid crystal waveplate. The variable voltage signal may be output through a power board or a processor of the display device. The liquid crystal wave plate structure may specifically be a liquid crystal light adjusting film having the 1/2 liquid crystal wave plate function.
In one embodiment, the liquid crystal wave plate structure is specifically configured to access a variable voltage signal to form a 1/2 liquid crystal wave plate with an optical axis direction changing angle of 1/2 that is a direction changing angle of the display panel.
In application, the liquid crystal wave plate structure is specifically configured to follow the direction of the display panel, and adjust the change angle of the optical axis direction of the liquid crystal wave plate structure to 1/2 of the change angle of the direction of the display panel, for example, if the direction of the display panel changes by 30 °, the optical axis direction of the liquid crystal wave plate structure changes by 15 °, and the polarization direction of the linearly polarized light emitted by the display panel changes by 30 °; the direction of the display panel changes by 90 degrees, the direction of the optical axis of the liquid crystal wave plate structure changes by 45 degrees, and the polarization direction of linearly polarized light emitted by the display panel changes by 90 degrees.
As shown in FIG. 5, in one embodiment, the display panel is the LCD panel 100 shown in FIG. 1;
the liquid crystal wave plate structure 2 is arranged in the light ray outgoing direction of the linear polarizer 101 and covers the linear polarizer 101;
the liquid crystal wave plate structure 2 is used for receiving a first voltage signal when the direction of the display panel 100 is a first direction, and forms an 1/2 liquid crystal wave plate with the optical axis direction consistent with the polarization direction of the linear polarizer 101;
the liquid crystal wave plate structure 2 is used for accessing a second voltage signal when the direction of the display panel 100 is a second direction, and forms an 1/2 liquid crystal wave plate with an included angle between the optical axis direction and the polarization direction of the linear polarizer 101 equal to 45 degrees;
wherein the first direction is perpendicular to the second direction.
As shown in FIG. 6, in one embodiment, the display panel is the OLED panel 200 shown in FIG. 2;
the liquid crystal wave plate structure 2 is arranged in the light ray outgoing direction of the linear polarizer 201 and covers the linear polarizer 201;
the liquid crystal wave plate structure 2 is used for receiving a first voltage signal when the direction of the display panel 200 is a first direction, and forms an 1/2 liquid crystal wave plate with the optical axis direction consistent with the polarization direction of the linear polarizer 201;
the liquid crystal wave plate structure 2 is used for accessing a second voltage signal when the direction of the display panel 200 is a second direction, and forms an 1/2 liquid crystal wave plate with an included angle between the optical axis direction and the polarization direction of the linear polarizer 201 equal to 45 degrees;
wherein the first direction is perpendicular to the second direction.
In application, the first direction and the second direction may be any directions, specifically, the first direction may be a vertical screen direction when the length direction of the display panel is perpendicular to the ground or an included angle between the display panel and the ground is greater than 45 °, and the second direction may be a horizontal screen direction when the length direction of the display panel is parallel to an included angle between the ground and the ground which is less than or equal to 45 °; the first direction may also be a vertical screen direction when the length direction of the display panel is perpendicular to the ground or an included angle between the display panel and the ground is greater than 45 degrees, and the second direction may also be a horizontal screen direction when the length direction of the display panel is parallel to an included angle between the ground and the ground which is less than or equal to 45 degrees. The first direction and the second direction can be set to other directions according to actual needs.
In application, when the display device is used for vertical screen display, the direction of the optical axis of the 1/2 liquid crystal wave plate is consistent with the polarization direction of linearly polarized light emitted by the display panel, and the polarization direction of the linearly polarized light is unchanged and is consistent with the polarization direction of polarized sunglasses or 3D glasses worn by a user. When the display device is used for traversing, the optical axis direction of the 1/2 liquid crystal wave plate is converted into the angle of 45 degrees with the polarization direction of the linearly polarized light emitted by the display panel, and then the polarization direction of the linearly polarized light emitted by the display panel is changed into the original 90 degrees. When a user wears the polarized sunglasses or the 3D glasses to use the display device, because the polarization direction of the polarized sunglasses or the 3D glasses is not changed, in the scene, no matter the display device displays vertically or horizontally, the light emitted by the display panel can completely pass through the polarized sunglasses or the 3D glasses.
The structure shown in fig. 5 or 6 is that the liquid crystal wave plate structure is arranged in the light emitting direction of the display panel and covers the display panel, and the polarization direction of the linearly polarized light emitted by the display panel is adjusted by the liquid crystal wave plate structure according to the direction of the display panel, so that when a user wears the polarized sunglasses or the 3D glasses to watch the display panel from any angle, the linearly polarized light emitted by the display panel is always consistent with the polarization direction of the polarized sunglasses or the 3D glasses, and the user can clearly see the display content without changing the brightness of the display panel.
In one embodiment, the display device further comprises a human-computer interaction device;
the human-computer interaction device is used for:
receiving a polarization direction adjusting instruction of a user, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the polarization direction adjusting instruction, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
In application, a user can control the working state of the liquid crystal wave plate structure through a man-machine interaction device of the display device according to actual needs. The human-computer interaction device can be a touch display screen, a touch panel, a key, a voice control device, a gesture control device and the like. The man-machine interaction device can be connected with a power panel or a processor of the display device, and when a user performs touch operation, pressing operation, voice control operation or gesture control operation on the display device, the power panel or the processor receives the polarization direction adjusting instruction and applies a voltage signal with a corresponding magnitude to the liquid crystal wave plate structure. When a polarization direction adjusting instruction of a receiving user is not received, the voltage signal applied to the liquid crystal wave plate structure can be stopped, the voltage accessed to the liquid crystal wave plate structure is 0, the liquid crystal wave plate structure is in a transparent state, and the polarization direction of linearly polarized light emitted by the display panel is not changed.
In one embodiment, the human-computer interaction device is configured to:
receiving a first polarization direction adjusting instruction of a user, and triggering the liquid crystal wave plate structure to access a first voltage signal according to the first polarization direction adjusting instruction to form an 1/2 liquid crystal wave plate with the optical axis direction consistent with the polarization direction of the linear polarizer;
and receiving a second polarization direction adjusting instruction of a user, and triggering the liquid crystal wave plate structure to access a second voltage signal according to the second polarization direction adjusting instruction to form an 1/2 liquid crystal wave plate with an included angle between the optical axis direction and the polarization direction of the linear polarizer equal to 45 degrees.
In one embodiment, the display device further comprises a direction sensor;
the direction sensor is used for sensing the direction of the display panel, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the direction of the display panel, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
In application, the display device may be provided with a direction sensor for automatically sensing the direction of the display panel, so as to control the optical axis direction of the liquid crystal wave plate structure according to the direction of the display panel. The direction sensor may include a gravity sensor, a gyroscope, an angular velocity sensor, and the like. The direction sensor can be connected with a power panel or a processor of the display device, and when the direction of the display panel is changed, a polarization direction adjusting instruction is sent to the power panel or the processor to trigger the power panel or the processor to apply a voltage signal with a corresponding magnitude to the liquid crystal wave plate structure. The user can control the working state (mainly including opening and closing) of the direction inductor through the man-machine interaction device of the display device according to actual needs, when the direction reactor is closed, a polarization direction adjusting instruction is not sent to the power panel or the processor, when the power panel or the processor does not receive the polarization direction adjusting instruction, the voltage signal applied to the liquid crystal wave plate structure can be stopped, the voltage accessed to the liquid crystal wave plate structure is 0, the transparent state is achieved, and the polarization direction of linearly polarized light emitted by the display panel is not changed.
As shown in fig. 7, the display device 10 according to the embodiment of the present application includes a display panel 11, a liquid crystal waveplate structure 12, a direction sensor 13, and a processor 14, wherein the processor 14 is electrically connected to the display panel 11, the liquid crystal waveplate structure 12, and the direction sensor 13, respectively.
In application, the display panel may be specifically an LCD panel or an OLED panel in the above embodiments, or a touch display panel whose emergent light is linearly polarized light. The liquid crystal wave plate structure is the 1/4 liquid crystal wave plate or the 1/2 liquid crystal wave plate in the above embodiments. The Processor may be a Central Processing Unit (CPU), and the Processor 201 may also be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The display device may further include a human-computer interaction device and a power board electrically connected to the processor.
As shown in FIG. 8, in one embodiment, display device 10 further includes a human interaction device 15 electrically connected to processor 14.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A display device is characterized by comprising a display panel and a liquid crystal wave plate structure;
the liquid crystal wave plate structure is arranged in the light emergent direction of the display panel and covers the display panel;
the liquid crystal wave plate structure is used for adjusting the polarization direction of the linearly polarized light emitted by the display panel so as to adjust the linearly polarized light emitted by the display panel into circularly polarized light, or the polarization direction of the linearly polarized light emitted by the display panel is changed along with the direction of the display panel.
2. The display device according to claim 1, wherein the display panel comprises a linear polarizer;
the liquid crystal wave plate structure is arranged in the light ray emergent direction of the linear polaroid and covers the linear polaroid;
the liquid crystal wave plate structure is used for accessing a fixed voltage signal to form an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer, so that linearly polarized light emitted by the linear polarizer is adjusted into circularly polarized light.
3. The display apparatus of claim 2, wherein the display apparatus further comprises a human interaction device;
the human-computer interaction device is used for:
receiving a polarization state adjusting instruction of a user, and triggering the liquid crystal wave plate structure to access a fixed voltage signal according to the polarization state adjusting instruction to form an 1/4 liquid crystal wave plate with an included angle of 45 degrees between the optical axis direction and the polarization direction of the linear polarizer.
4. The display device as claimed in claim 1, wherein the liquid crystal wave plate structure is configured to switch in a variable voltage signal to form 1/2 liquid crystal wave plate with an optical axis direction changing along with the direction of the display panel, so as to adjust the polarization direction of linearly polarized light emitted from the display panel according to the direction of the display panel.
5. The display device of claim 4, wherein the liquid crystal waveplate structure is specifically configured to switch in a variable voltage signal to form a 1/2 liquid crystal waveplate having an optic axis direction change angle of 1/2 of the display panel direction change angle.
6. The display device according to claim 5, wherein the display panel comprises a linear polarizer;
the liquid crystal wave plate structure is arranged in the light ray emergent direction of the linear polaroid and covers the linear polaroid;
the liquid crystal wave plate structure is used for accessing a first voltage signal when the direction of the display panel is a first direction, and an 1/2 liquid crystal wave plate with the optical axis direction consistent with the polarization direction of the linear polarizer is formed;
the liquid crystal wave plate structure is used for accessing a second voltage signal when the direction of the display panel is a second direction, and an 1/2 liquid crystal wave plate with an included angle between the optical axis direction and the polarization direction of the linear polarizer equal to 45 degrees is formed;
wherein the first direction is perpendicular to the second direction.
7. The display apparatus of claim 4, wherein the display apparatus further comprises a human interaction device;
the human-computer interaction device is used for:
receiving a polarization direction adjusting instruction of a user, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the polarization direction adjusting instruction, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
8. The display device according to any one of claims 2 to 7, wherein the liquid crystal wave plate structure is a liquid crystal light adjusting film.
9. The display device according to any one of claims 4 to 7, wherein the display device further comprises a direction sensor;
the direction sensor is used for sensing the direction of the display panel, triggering the liquid crystal wave plate structure to access a variable voltage signal according to the direction of the display panel, and forming an 1/2 liquid crystal wave plate with the optical axis direction changing along with the direction of the display panel.
10. The display device according to any one of claims 1 to 7, wherein the display panel is an OLED panel or an LCD panel;
the OLED panel comprises a linear polarizer, an 1/4 wave plate and an OLED anode layer which are sequentially arranged;
the LCD panel comprises a linear polarizer, a liquid crystal box, another linear polarizer and a backlight module which are arranged in sequence.
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| CN202010165524.1A CN111258109A (en) | 2020-03-11 | 2020-03-11 | Display device |
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| CN202010165524.1A CN111258109A (en) | 2020-03-11 | 2020-03-11 | Display device |
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| CN114966933A (en) * | 2021-02-26 | 2022-08-30 | 京东方科技集团股份有限公司 | Polarizing assembly, preparation method thereof, display panel and display device |
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