CN110515229B - Display device and control method of display device - Google Patents
Display device and control method of display device Download PDFInfo
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- CN110515229B CN110515229B CN201910810119.8A CN201910810119A CN110515229B CN 110515229 B CN110515229 B CN 110515229B CN 201910810119 A CN201910810119 A CN 201910810119A CN 110515229 B CN110515229 B CN 110515229B
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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
- G02F1/13338—Input devices, e.g. touch panels
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention discloses a display device and a control method of the display device, and belongs to the field of electronic devices. The display device includes: a display panel and a sensing assembly; the display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate; the color film substrate comprises a black matrix pattern and a plurality of color resistance layers, the black matrix pattern comprises a plurality of opening areas, and the plurality of color resistance layers are correspondingly positioned in the plurality of opening areas one by one; the sensing assembly is positioned on the light incident side of the color film substrate and comprises a plurality of non-visible light sensors, and orthographic projections of the non-visible light sensors on the color film substrate are distributed on the color film substrate; the display device is used for acquiring image information according to the information of the invisible light which is acquired by the sensing assembly and penetrates through the color film substrate from the outside of the color film substrate. The invention solves the problem that the structure of the display device in the related art is more complicated.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a display device and a method for controlling the display device.
Background
A display device is a device having a display function including a display panel. Currently, a display device is generally required to have certain image acquisition functions.
A display device in the related art includes a display panel and an optical lens located outside the display panel, and the display device can obtain image information outside the display device through the optical lens.
However, the structure of the display device is complicated.
Disclosure of Invention
The embodiment of the invention provides a display device and a control method, which can solve the problem that the structure of the display device in the related art is complex. The technical scheme is as follows:
according to a first aspect of the present invention, there is provided a display device comprising a display panel and a sensing assembly;
the display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate;
the color film substrate comprises a black matrix pattern and a plurality of color resistance layers, the black matrix pattern comprises a plurality of opening areas, and the plurality of color resistance layers are correspondingly positioned in the plurality of opening areas one by one;
the sensing assembly is positioned on the light incident side of the color film substrate and comprises a plurality of non-visible light sensors, and orthographic projections of the non-visible light sensors on the color film substrate are distributed on the color film substrate;
the display device is used for acquiring image information according to the information of the invisible light which is acquired by the sensing assembly and penetrates through the color film substrate from the outside of the color film substrate.
Optionally, the sensing assembly is located on a side of the array substrate away from the liquid crystal layer.
Optionally, one side of each non-visible light sensor, which is close to the color film substrate, is provided with a first light shielding structure, and the first light shielding structure is used for shielding visible light and transmitting non-visible light.
Optionally, a second light shielding structure is arranged on one side of each non-visible light sensor, which is away from the color film substrate, and the second light shielding structure is used for shielding visible light and non-visible light.
Optionally, the display device includes a backlight assembly, the backlight assembly is located on a side of the array substrate away from the liquid crystal layer;
the backlight assembly comprises a backlight source and a filter film, wherein the filter film is positioned between the backlight source and the sensing assembly and used for shielding non-visible light and transmitting visible light.
Optionally, the backlight assembly further includes a diffusion film, the diffusion film is located on one side of the sensing assembly close to the array substrate, the diffusion film has a plurality of openings, and orthographic projections of the plurality of non-visible light sensors on the diffusion film are located in the plurality of openings in a one-to-one correspondence manner.
Optionally, the non-visible light is near-infrared light.
According to another aspect of embodiments of the present application, there is provided a control method of a display apparatus, including:
acquiring information of invisible light which penetrates through a color film substrate from the outside of the color film substrate through a plurality of invisible light sensors in a sensing assembly;
and acquiring image information according to the information of the invisible light.
Optionally, the obtaining of the image information according to the information of the invisible light includes obtaining an imaging parameter of the invisible light which penetrates through the color film substrate from the outside of the color film substrate;
and determining the image information according to the imaging parameters and the information of the non-visible light.
Optionally, the determining the image information according to the imaging parameter and the information of the non-visible light includes determining the image information according to an imaging formula, where the imaging formula includes:
Og＝MLOMR，
wherein, OgThe image information is in the form of a matrix, O is the non-visible light information in the form of a matrix, ML＝(Mx TMx+αA1ro)-1Mx T，MR＝My(My TMy+αy1co)-1，MxAnd MyFor the imaging parameters, 1roAnd 1coIs an identity matrix, αAAnd alphayAre all greater than zero.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a display device and a control method of the display device, the display device comprises a display panel and a sensing assembly, a color film substrate in the display panel comprises a black matrix pattern and a plurality of color resistance layers, external light penetrates through the black matrix pattern and the color resistance layers of the color film substrate to obtain partial visible light and non-visible light, the sensing assembly receives the non-visible light and obtains image information according to the information of the non-visible light, the display device can obtain the image information without arranging an optical lens outside the display panel, and compared with the related technology, the display device is simple in structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device in the related art;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 3 is a top view of a color filter substrate in the display device shown in fig. 2;
FIG. 4 is a schematic structural diagram of another display device provided in an embodiment of the present invention;
FIG. 5 is an exemplary embodiment of the display device shown in FIG. 4;
fig. 6 is a flowchart of a control method of a display device according to an embodiment of the present invention;
fig. 7 is a flowchart of another control method of a display device according to an embodiment of the present invention;
fig. 8 is an exemplary embodiment of a control method of the display apparatus shown in fig. 7.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to a particular embodiment.
Detailed description of the invention
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
Currently, a display device includes a display panel and an optical lens located outside the display panel, and image information outside the display device is acquired through the optical lens in the process of acquiring an image by the display device. As shown in fig. 1, the display device 10 includes an optical lens 101 and a display panel 102, and external image information is displayed on the display panel 102 through the optical lens 101. The optical lens 102 is disposed outside the display panel 102, so that the display device has a complicated structure.
Fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device 20 may include a display panel 201 and a sensing assembly 202, and the display panel 201 includes a color film substrate 201a, an array substrate 201c, and a liquid crystal layer 201b located between the color film substrate 201a and the array substrate 201 c.
The array substrate 201c may be a substrate including a Thin Film Transistor (TFT) array.
The color film substrate 201a includes a black matrix pattern a and a plurality of color resist layers b, the black matrix pattern a includes a plurality of opening regions, and the plurality of color resist layers b are located in the plurality of opening regions in a one-to-one correspondence manner.
The color-resisting layers b can block invisible light and transmit visible light, and the black matrix patterns a can transmit invisible light and block visible light. The material of the black matrix pattern a may be black light-shielding paste. Fig. 3 is a top view of the color filter substrate in fig. 2, in which the black area is a black matrix pattern, and the white area is a plurality of color resist layers.
As shown in fig. 2, the sensor assembly 202 is located on the light incident side of the color filter substrate 201a, and includes a plurality of non-visible light sensors 202a, and orthographic projections of the plurality of non-visible light sensors 202a on the color filter substrate 201a are distributed on the color filter substrate 201a, so that the sensor assembly 202 can obtain non-visible light transmitted through the color filter substrate 201a from each region of the color filter substrate 201 a.
In the embodiment of the present invention, the light incident side of the color filter substrate 201a is a side close to the liquid crystal layer 201 b.
The display device 20 is configured to obtain image information according to the information of the invisible light transmitted through the color filter substrate 201a from the outside of the color filter substrate 201a, which is obtained by the sensor assembly 202.
In summary, an embodiment of the present invention provides a display device, including a display panel and a sensor assembly, where a color film substrate in the display panel includes a black matrix pattern and a plurality of color resist layers, external light penetrates through the black matrix pattern and the color resist layers of the color film substrate to obtain a part of visible light and non-visible light, the sensor assembly receives the non-visible light and obtains image information according to information of the non-visible light, and the display device can obtain the image information without an optical lens disposed outside the display panel.
Fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention.
Optionally, the sensing element 202 is located on a side of the array substrate 201c away from the liquid crystal layer 201 b. The sensing assembly 202 may include a large array of glass-based photosensors.
In an optional implementation method, the sensing element 202 is located on a side of the array substrate 201c away from the liquid crystal layer 201b, that is, the sensing element 202 is located outside the display panel 201, so that an image is not blocked and a display effect is not affected.
Optionally, one side of each non-visible light sensor 202a close to the color filter substrate 201a is provided with a first light shielding structure 203, and the first light shielding structure 203 is used for shielding visible light and transmitting non-visible light.
In an alternative implementation method, the first light shielding structure 203 may be a high-pass filter or may be made of the same material as the black matrix pattern a, and the embodiment of the present invention is not limited in any way. The first light shielding structure 203 shields the visible light and transmits the invisible light, so that the influence of the visible light when the plurality of invisible light sensors 202a acquire the invisible light can be avoided.
Optionally, a second light shielding structure 204 is disposed on a side of each non-visible light sensor 202a away from the color filter substrate 201a, and the second light shielding structure 204 is used for shielding visible light and non-visible light.
Wherein, the material of the second light shielding structure 204 may be metal. The second light shielding structure 204 shields visible light and other non-visible light (for example, a part of non-visible light emitted by the backlight assembly), so that when the non-visible light sensor 202a obtains the non-visible light transmitted through the color film substrate 201a, the visible light and the other non-visible light (for example, a part of non-visible light emitted by the backlight assembly) are prevented from affecting the non-visible light sensor 202 a.
Optionally, the display device 20 includes a backlight assembly 205, the backlight assembly 205 is disposed on a side of the array substrate 201c away from the liquid crystal layer 201b, the backlight assembly 205 includes a backlight source 205b and a filter 205a, and the filter 205a is disposed between the backlight source 205b and the sensing assembly 202, and is used for blocking non-visible light and transmitting visible light.
The filter 205a transmits visible light and blocks part of invisible light emitted from the backlight, so as to prevent the part of invisible light emitted from the backlight from affecting the invisible light sensor 202 a. The visible light transmitted through the filter 205a can provide a light source for the display panel 201.
Optionally, the backlight assembly 205 further includes a diffuser film 205c, the diffuser film 205c is located on a side of the sensing assembly 202 close to the array substrate 201c, the diffuser film 205c has a plurality of openings, and orthographic projections of the plurality of non-visible light sensors 202a on the diffuser film 205c are located in the plurality of openings in a one-to-one correspondence.
The diffusion film 205c can make light uniformly irradiate the display area, prevent the plurality of non-visible light sensors 202a from shielding the backlight 205b to cause black spots in the display area, and also make the light emitted by the backlight 205b transmitted to the liquid crystal layer 201b, and the plurality of openings on the diffusion film 205c can prevent the diffusion film 205c from blocking the non-visible light.
Optionally, the non-visible light is near-infrared light. Near-infrared light is an electromagnetic wave with a wavelength between visible light and short-wavelength infrared light. Because the objects can be near-infrared light radiation sources and constantly radiate near-infrared light outwards, the embodiment of the invention can improve the image acquisition efficiency and further improve the imaging efficiency by acquiring the near-infrared light for imaging.
In summary, an embodiment of the present invention provides a display device, including a display panel and a sensor assembly, where a color film substrate in the display panel includes a black matrix pattern and a plurality of color resist layers, external light penetrates through the black matrix pattern and the color resist layers of the color film substrate to obtain a part of visible light and non-visible light, the sensor assembly receives the non-visible light and obtains image information according to information of the non-visible light, and the display device can obtain the image information without an optical lens disposed outside the display panel.
In an exemplary embodiment, as shown in fig. 5, the display device 20 may further include a cover plate 2061 (the cover plate is used for protecting the internal structure of the display panel) and a touch layer 2062 (for implementing a touch function), an upper polarizing layer 207, an array substrate 208 and a lower polarizing layer 209. After the external light irradiates the color filter substrate 201a, a part of the invisible light in the external light is shielded by the color resist layer in the color filter substrate 201a, and the other part of the invisible light penetrates through the black matrix pattern and passes through the opening on the diffusion layer 205c to irradiate the invisible light sensor 202 a. Since the color resistance layer of the color film substrate 201a, which blocks the invisible light, is distributed on the color film substrate 201a according to a certain rule, the color film substrate 201a has an effect of coding hole imaging, and the imaging rule can be obtained to restore the invisible light information obtained by the sensing assembly to obtain image information.
Among them, the upper polarizing layer 207 and the lower polarizing layer 209 may be used to realize a display function with the liquid crystal layer 201 b. The array substrate 208 is used for transmitting the non-visible light information acquired by each non-visible light sensor in the sensing assembly 202 to the controller of the display device 20 for processing, and the array substrate 201c is used for controlling the liquid crystal layer 201b to transmit light. The light emitted from the backlight 205b passes through the visible light filter 205a, and only the visible light portion remains, which provides a light source for the display portion. Since the filter film 205a may have difficulty in blocking all the invisible light emitted from the backlight 205b, the second light-blocking structure 204 ensures that neither the visible light nor the invisible light emitted from the backlight 205b is received by each of the invisible light sensors in the sensing assembly 202, thereby avoiding interference of the invisible light emitted from the backlight 205b on each of the invisible light sensors.
Fig. 6 is a flowchart of a control method for a display device according to an embodiment of the present invention, where the method is applied to a display device and includes the steps of:
And step 302, acquiring image information according to the information of the non-visible light.
In summary, embodiments of the present invention provide a control method for a display device, where the display device includes a display panel and a sensor assembly, a color filter substrate in the display panel includes a black matrix pattern and a plurality of color resist layers, external light penetrates through the black matrix pattern and the color resist layers of the color filter substrate to obtain a part of visible light and non-visible light, the sensor assembly receives the non-visible light, and obtains image information according to information of the non-visible light, and the display device can obtain the image information without an optical lens disposed outside the display panel.
Fig. 7 is a flowchart of another control method for a display device according to an embodiment of the present invention, where the method may be applied to a controller of the display device, and the control method for the display device may include the following steps:
As shown in fig. 2, external light is transmitted through a color filter substrate 201a having a black matrix pattern a and a plurality of color resist layers b, leaving a portion of visible light and a portion of invisible light with image information, and the invisible light is received by a plurality of invisible light sensors 202a in a sensor assembly 202.
In the embodiment of the invention, an image sample can be placed on the light-emitting side of the display device, the information of the invisible light of the image sample is acquired through the sensing assembly, and then the imaging parameters are calibrated according to the relationship between the image sample and the information of the invisible light. The specific method may refer to related technologies, and the embodiments of the present invention are not described herein again.
The invisible light information is represented by O, the sensor noise is represented by E, and the reconstructed and restored image information is represented by OgIs represented by wherein O, OgAnd E is in a matrix form. Using imaging parameters MxAnd MyRepresents O, OgAnd E is the matrix relation:
Og＝MxOMy T+E,
wherein, when the sensor noise E is not considered, the following transformation can be performed on the above equation:
The imaging formula includes:
Og＝MLOMR，
wherein, OgIs image information in matrix form, O is non-visible light information in matrix form, ML＝(Mx TMx+αA1ro)-1Mx T，MR＝My(My TMy+αy1co)-1，MxAnd MyAs imaging parameters, 1roAnd 1coIs an identity matrix, 1roAnd Mx TMxIs a homotype matrix, 1coAnd My TMyIs a homotypic matrix, alphaAAnd alphayIs a very small value greater than zero, e.g. alphaAAnd alphayMay be 9.9 × 10-8。
In summary, embodiments of the present invention provide a control method for a display device, where the display device includes a display panel and a sensor assembly, a color filter substrate in the display panel includes a black matrix pattern and a plurality of color resist layers, external light penetrates through the black matrix pattern and the color resist layers of the color filter substrate to obtain a part of visible light and non-visible light, the sensor assembly receives the non-visible light, and obtains image information according to information of the non-visible light, and the display device can obtain the image information without an optical lens disposed outside the display panel.
In an exemplary embodiment, as shown in fig. 8, after the light emitted from the external image passes through the color film substrate, the sensor assembly acquires the non-visible light information O, and then the non-visible light information O is acquired according to the imaging parameter MxAnd MyReconstructing and restoring the non-visible light information O to obtain image information Og。
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. A display device is characterized by comprising a display panel and a sensing assembly;
the display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate;
the color film substrate comprises a black matrix pattern and a plurality of color resistance layers, the black matrix pattern comprises a plurality of opening areas, and the plurality of color resistance layers are correspondingly positioned in the plurality of opening areas one by one;
the sensing assembly is positioned on the light incident side of the color film substrate and comprises a plurality of non-visible light sensors, and orthographic projections of the non-visible light sensors on the color film substrate are distributed on the color film substrate;
the display device is used for acquiring image information according to the information of the invisible light which is acquired by the sensing assembly and penetrates through the color film substrate from the outside of the color film substrate;
the black matrix pattern is used for transmitting invisible light and blocking visible light, and the plurality of color resistance layers are used for blocking invisible light and transmitting visible light.
2. The display device according to claim 1, wherein the sensing assembly is located on a side of the array substrate away from the liquid crystal layer.
3. The display device according to claim 2, wherein a first light shielding structure is disposed on a side of each of the non-visible light sensors close to the color filter substrate, and the first light shielding structure is configured to shield visible light and transmit non-visible light.
4. The display device according to claim 3, wherein a side of each of the non-visible light sensors, which is away from the color filter substrate, is provided with a second light shielding structure, and the second light shielding structure is used for shielding visible light and non-visible light.
5. The display device according to claim 2, wherein the display device comprises a backlight assembly disposed on a side of the array substrate away from the liquid crystal layer;
the backlight assembly comprises a backlight source and a filter film, wherein the filter film is positioned between the backlight source and the sensing assembly and used for shielding non-visible light and transmitting visible light.
6. The display device according to claim 5, wherein the backlight assembly further comprises a diffusion film, the diffusion film is located on a side of the sensing assembly close to the array substrate, the diffusion film has a plurality of openings thereon, and orthographic projections of the plurality of non-visible light sensors on the diffusion film are located in the plurality of openings in a one-to-one correspondence.
7. The display device according to any one of claims 1 to 6, wherein the non-visible light is near-infrared light.
8. A control method for a display device according to any one of claims 1 to 7, the method comprising:
acquiring information of invisible light which penetrates through a color film substrate from the outside of the color film substrate through a plurality of invisible light sensors in a sensing assembly;
and acquiring image information according to the information of the non-visible light.
9. The method of claim 8, wherein the obtaining image information from the information of the non-visible light comprises:
acquiring imaging parameters of invisible light penetrating through the color film substrate from the outside of the color film substrate;
and determining the image information according to the imaging parameters and the information of the non-visible light.
10. The method of claim 9, wherein determining the image information from the imaging parameters and the information of the non-visible light comprises:
determining the image information according to an imaging formula, the imaging formula comprising:
Og＝MLOMR，
wherein, OgThe image information is in the form of a matrix, O is the non-visible light information in the form of a matrix, ML＝(Mx TMx+αA1ro)-1Mx T，MR＝My(My TMy+αy1co)-1，MxAnd MyAs the imaging parameter, 1roAnd 1coIs an identity matrix, αAAnd alphayAre all greater than zero.
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| CN113759453B (en) * | 2021-09-14 | 2023-11-07 | 业成科技（成都）有限公司 | Polarization filter plate, touch display device and mobile terminal |
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