CN112764278B - Liquid crystal display panel and liquid crystal display device - Google Patents
Liquid crystal display panel and liquid crystal display device Download PDFInfo
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- CN112764278B CN112764278B CN202110008101.3A CN202110008101A CN112764278B CN 112764278 B CN112764278 B CN 112764278B CN 202110008101 A CN202110008101 A CN 202110008101A CN 112764278 B CN112764278 B CN 112764278B
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
-
- 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
-
- 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
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The embodiment of the application discloses a liquid crystal display panel and a liquid crystal display device, wherein in the liquid crystal display panel, a first liquid crystal box is arranged on a second liquid crystal box, and the first liquid crystal box comprises a first substrate, a first liquid crystal layer and a second substrate which are sequentially arranged; the second liquid crystal box comprises a third substrate, a second liquid crystal layer and the first substrate which are arranged in sequence; the second substrate comprises a second substrate, a touch electrode and a first control electrode, and the second substrate comprises a first surface and a second surface which are oppositely arranged; the touch electrode is formed on the first surface; the first control electrode is formed on the second face. According to the liquid crystal display panel, the first liquid crystal box and the second liquid crystal box share the first substrate, and the touch electrode and the first control electrode are formed on the second substrate by adopting a double-sided process, so that the effects of simplifying, thinning and peeping-proof touch panels are achieved.
Description
Technical Field
The application relates to the technical field of display, in particular to a liquid crystal display panel and a liquid crystal display device.
Background
In the course of research and practice on the prior art, the inventors of the present application found that a conventional touch panel with a peep-proof function is generally formed by stacking a display panel and a peep-proof structure that are independent of each other. The externally-hung scheme is structurally complex and thick.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display panel and a liquid crystal display device, which can simplify and lighten a touch panel with an anti-peeping function.
The embodiment of the application provides a liquid crystal display panel, which comprises a first liquid crystal box and a second liquid crystal box, wherein the first liquid crystal box is arranged on the second liquid crystal box, and the first liquid crystal box comprises a first substrate, a first liquid crystal layer and a second substrate which are sequentially arranged; the second liquid crystal box comprises a third substrate, a second liquid crystal layer and the first substrate which are sequentially arranged, and the first substrate is a shared substrate of the first liquid crystal box and the second liquid crystal box;
the second substrate includes:
a second substrate including a first side and a second side disposed opposite to each other, the second side facing the first liquid crystal layer;
a touch electrode formed on the first face; and
a first control electrode formed on the second face.
Optionally, in some embodiments of the present application, the second substrate further includes a color film layer disposed on a side of the first control electrode facing the first liquid crystal layer.
Optionally, in some embodiments of the present application, the first substrate includes:
a first substrate including third and fourth oppositely disposed faces, the third face facing the first liquid crystal layer;
a second control electrode formed on the third face;
a common electrode formed on the fourth face; and
a first alignment layer formed on a side of the common electrode facing the second liquid crystal layer.
Optionally, in some embodiments of the present application, the third substrate includes:
a third substrate;
a pixel electrode formed on a side of the third substrate facing the second liquid crystal layer;
a second alignment layer formed on the pixel electrode.
Optionally, in some embodiments of the present application, the first control electrode and the second control electrode are each a planar electrode.
Optionally, in some embodiments of the present application, the first control electrode and the second control electrode are made of ito.
Optionally, in some embodiments of the present application, the first control electrode and the second control electrode are connected to an alternating voltage; the pixel electrode is connected with a direct current voltage.
Optionally, in some embodiments of the present application, a material of the first liquid crystal layer is polymer dispersed liquid crystal, and a material of the second liquid crystal layer is nematic liquid crystal.
Optionally, in some embodiments of the present application, the liquid crystal display panel further includes a first polarizer, a second polarizer, a cover plate, and an anti-glare film;
the first polarizer is arranged on the first liquid crystal box, and the second polarizer is arranged on one side of the second liquid crystal box, which faces away from the first liquid crystal box; the cover plate is arranged on the first polarizer, and the anti-glare film is arranged on the cover plate.
Correspondingly, the embodiment of the application further provides a liquid crystal display device which comprises a backlight module and the liquid crystal display panel, wherein the liquid crystal display panel is arranged on the backlight module.
According to the embodiment of the application, the first liquid crystal box and the second liquid crystal box share the first substrate, and the touch electrode and the first control electrode are formed on the second substrate by adopting a double-sided process, so that the effects of simplifying, thinning and peeping-proof touch panel are achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 liquid crystal display panel provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, where the context requires otherwise, the words "upper" and "lower" used in relation to the device in use or operation will generally refer to the upper and lower extremities of the device, particularly as oriented in the drawing figures; while "inner" and "outer" are with respect to the outline of the device.
The embodiments of the present application provide a display panel, which is described in detail below. It should be noted that the viewing angle is ± N degrees, which means the viewing angle of N degrees to the left and right with respect to the normal of the central vertical display panel, where N is a positive number.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present disclosure. The embodiment of the present application provides a liquid crystal display panel 100, which includes a first liquid crystal cell 10, a second liquid crystal cell 20, a first polarizer 31, a protective layer 32, a second polarizer 33, a cover plate 34, and an anti-glare film 35.
The first liquid crystal cell 10 is disposed on the second liquid crystal cell 20. The first polarizer 31 is arranged on the side of the second liquid crystal cell 20 facing away from the first liquid crystal cell 10. A protective layer 32 is disposed on the first liquid crystal cell 10. The second polarizer 33 is disposed on the protective layer 32. The cover plate 34 is disposed on the second polarizer 33. The antiglare film 35 is provided on the cover plate 34.
Wherein, in the energized state, the viewing angle of the second liquid crystal cell 20 is larger than the viewing angle of the first liquid crystal cell 10. The first liquid crystal cell 10 is mainly used to adjust the viewing angle of the second liquid crystal cell 20.
For example, when the second liquid crystal cell 20 is powered on, the luminance viewing angle of the second liquid crystal cell 20 is ± 40 degrees. When the first liquid crystal box 10 is powered on, the brightness visual angle of the first liquid crystal box 10 is +/-25 degrees; when the first liquid crystal cell 10 is powered off, the first liquid crystal cell 10 can scatter the display light of the second liquid crystal cell 20 without limiting the viewing angle of the second liquid crystal cell 20. That is, when the first liquid crystal cell 10 and the second liquid crystal cell 20 are both powered on, the viewing angle of the liquid crystal display panel 100 is ± 25 degrees, which is the viewing angle of the first liquid crystal cell 10, so as to achieve the anti-peeping effect; when the first liquid crystal cell 10 is powered off and the second liquid crystal cell 20 is powered on, the viewing angle of the liquid crystal display panel 100 is ± 40 degrees.
Therefore, the liquid crystal display panel 100 of the present embodiment adjusts the viewing angle of the second liquid crystal cell 20 by turning on or off the first liquid crystal cell 10, thereby achieving the anti-peeping effect.
The first liquid crystal cell 10 includes a first substrate 11, a first liquid crystal layer 12, and a second substrate 13, which are sequentially disposed. The second liquid crystal cell 20 includes a third substrate 14, a second liquid crystal layer 15, and a first substrate 11, which are sequentially disposed. The first substrate 11 is a common substrate for the first liquid crystal cell 10 and the second liquid crystal cell 20.
The second substrate 13 includes a second substrate 131, a touch electrode 132, a first control electrode 133, and a color film layer 134.
The second substrate 131 includes a first face 13a and a second face 13b disposed opposite to each other. The second face 13b faces the first liquid crystal layer 12. The touch electrode 132 is formed on the first face 13 a. The first control electrode 133 is formed on the second face 13 b. The color film layer 134 is disposed on a side of the first control electrode 133 facing the first liquid crystal layer 12.
In the embodiment of the present invention, the first liquid crystal cell 10 and the second liquid crystal cell 20 share the first substrate 11, and the touch electrode 132 and the first control electrode 133 are formed on the second substrate 131 by using a double-sided process, so as to achieve the effect of simplifying, thinning and preventing peeping the touch panel.
In addition, the color film layer 134 includes red, green, and blue color resists and a black matrix. The color film layer 134 is used to control the display of color.
The color film layer 134 is disposed on the second substrate 13, i.e. above the first liquid crystal layer 12, so that distortion and blurring of the display image of the liquid crystal display panel 100 at a wide viewing angle can be avoided. Since if the color film layer 134 is disposed on the side of the first liquid crystal layer 12 opposite to the display surface, the pixel has already been imaged when the first liquid crystal cell 10 is powered off and the second liquid crystal cell 20 is powered on, and when the pixel passes through the first liquid crystal cell 10, the image will be scattered by the first liquid crystal cell 10, so that the image will be distorted and blurred.
In the liquid crystal display panel 100 of the present embodiment, the first substrate 11 includes a first base 111, a second control electrode 112, a common electrode 113, and a first alignment layer 114.
The first substrate 111 includes a third face 11a and a fourth face 11b disposed oppositely. The third surface 11a faces the first liquid crystal layer 12. The second control electrode 112 is formed on the third surface 11 a. The common electrode 113 is formed on the fourth face 11 b. The first alignment layer 114 is formed on a side of the common electrode 113 facing the second liquid crystal layer 15.
In the present embodiment, the second control electrode 112 and the common electrode 113 are respectively formed on the third surface 11a and the fourth surface 11b of the first substrate 111, so as to achieve the effect of thinning the liquid crystal display panel 100.
Optionally, the material of the first Liquid Crystal layer 12 is Polymer Dispersed Liquid Crystal (PDLC).
In the first liquid crystal cell 10, when turned off, display light is scattered by using the scattering property of the first liquid crystal layer 12; when the first liquid crystal layer 12 is powered on, the first control electrode 133 and the second control electrode 112 generate an electric field, which changes the electric field into a regular arrangement, and further restricts the viewing angle of the light emitted by the second liquid crystal cell 20, thereby achieving the anti-peeping effect.
Optionally, the first control electrode 133 and the second control electrode 112 are respectively planar electrodes to improve the regularity of the liquid crystal arrangement in the first liquid crystal layer 12, that is, to improve the orientation uniformity of the liquid crystal.
Optionally, the first control electrode 133 and the second control electrode 112 are made of ito or other conductive materials.
In the liquid crystal display panel 100 of the present embodiment, the first control electrode 123 and the second control electrode 112 can be electrically connected by the conductive sealant disposed between the first substrate 11 and the second substrate 13.
In the liquid crystal display panel 100 of the present embodiment, the third substrate 14 includes a third base 141, a pixel electrode 142, and a second alignment layer 143.
The pixel electrode 142 is formed on a side of the third substrate 141 facing the second liquid crystal layer 15. The second alignment layer 143 is formed on the pixel electrode 142.
In the second liquid crystal cell 20, the material of the second liquid crystal layer 15 is optionally nematic liquid crystal.
Optionally, the first control electrode 133 and the second control electrode 112 are connected to an ac voltage. The pixel electrode 142 receives a dc voltage. That is, the first liquid crystal cell 10 is driven by an ac voltage signal to generate an electric field. The second cell 20 is driven by a dc voltage signal to generate an electric field. This is arranged to reduce the risk of the first and second liquid crystal cells 10, 20 interfering with each other during operation.
In addition, the third substrate 14 further includes a thin film transistor layer. That is, the third substrate 14 serves as an array substrate.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present disclosure. The embodiment of the present application further provides a liquid crystal display device 1000, which includes a backlight module 200 and a liquid crystal display panel 100, wherein the liquid crystal display panel 100 is disposed on the backlight module 200.
The structure of the liquid crystal display panel 100 is the same as the structure of the liquid crystal display panel 100 in the above embodiments, and please refer to the explanation of the liquid crystal display panel 100 in the above embodiments, which is not repeated here.
According to the embodiment of the application, the first liquid crystal box and the second liquid crystal box share the first substrate, and the touch electrode and the first control electrode are formed on the second substrate by adopting a double-sided process, so that the effects of simplifying, thinning and peeping-proof touch panel are achieved.
The liquid crystal display panel and the liquid crystal display device provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A liquid crystal display panel comprises a first liquid crystal box and a second liquid crystal box, wherein the first liquid crystal box is arranged on the second liquid crystal box; the second liquid crystal box comprises a third substrate, a second liquid crystal layer and the first substrate which are sequentially arranged, and the first substrate is a shared substrate of the first liquid crystal box and the second liquid crystal box;
in a display state, the second liquid crystal box is used for controlling image display, and the liquid crystal display panel comprises a wide visual angle mode and a peep-proof mode; when the liquid crystal display panel is in the peep-proof mode, the first liquid crystal box and the second liquid crystal box are electrified, and the visual angle of the first liquid crystal box is smaller than that of the second liquid crystal box; when the liquid crystal display panel is in the wide viewing angle mode, the first liquid crystal box is powered off, and the second liquid crystal box is powered on;
the second substrate includes:
a second substrate including a first side and a second side disposed opposite to each other, the second side facing the first liquid crystal layer;
a touch electrode formed on the first face;
a first control electrode formed on the second face; and
the color film layer is arranged on one side, facing the first liquid crystal layer, of the first control electrode;
the third substrate includes:
a third substrate;
a pixel electrode formed on a side of the third substrate facing the second liquid crystal layer;
a second alignment layer formed on the pixel electrode.
2. The liquid crystal display panel according to claim 1, wherein the first substrate comprises:
a first substrate including third and fourth oppositely disposed faces, the third face facing the first liquid crystal layer;
a second control electrode formed on the third face;
a common electrode formed on the fourth face; and
a first alignment layer formed on a side of the common electrode facing the second liquid crystal layer.
3. The liquid crystal display panel according to claim 2, wherein the first control electrode and the second control electrode are surface electrodes, respectively.
4. The liquid crystal display panel of claim 2, wherein the first control electrode and the second control electrode are made of Indium Tin Oxide (ITO).
5. The liquid crystal display panel according to claim 3, wherein the first control electrode and the second control electrode are connected to an alternating voltage; the pixel electrode is connected with a direct current voltage.
6. The liquid crystal display panel according to claim 1, wherein a material of the second liquid crystal layer is a nematic liquid crystal.
7. The liquid crystal display panel according to claim 1, further comprising a first polarizing plate, a second polarizing plate, a cover plate, and an antiglare film;
the first polarizer is arranged on the first liquid crystal box, and the second polarizer is arranged on one side of the second liquid crystal box, which faces away from the first liquid crystal box; the cover plate is arranged on the first polarizer, and the anti-glare film is arranged on the cover plate.
8. A liquid crystal display device comprising a backlight module and the liquid crystal display panel according to any one of claims 1 to 7, wherein the liquid crystal display panel is disposed on the backlight module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110008101.3A CN112764278B (en) | 2021-01-05 | 2021-01-05 | Liquid crystal display panel and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110008101.3A CN112764278B (en) | 2021-01-05 | 2021-01-05 | Liquid crystal display panel and liquid crystal display device |
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| CN112764278B true CN112764278B (en) | 2022-09-09 |
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| CN103293726B (en) * | 2012-06-29 | 2016-05-04 | 上海天马微电子有限公司 | Liquid crystal cell, 3D touch control display apparatus and control method thereof |
| CN104657023B (en) * | 2015-03-06 | 2018-01-05 | 合肥京东方光电科技有限公司 | Array base palte and preparation method thereof, display device and preparation method thereof |
| CN104699342A (en) * | 2015-03-27 | 2015-06-10 | 深圳市深越光电技术有限公司 | Novel G1-cell capacitive touch screen module and manufacturing method thereof |
| CN105116592B (en) * | 2015-07-27 | 2018-11-09 | 深圳市华星光电技术有限公司 | The production method and its structure of the adjustable public advertising display screen of mist degree |
| CN105093620B (en) * | 2015-08-07 | 2018-03-06 | 深圳市华星光电技术有限公司 | Public advertising display screen and preparation method thereof |
| TWI596402B (en) * | 2016-08-17 | 2017-08-21 | 友達光電股份有限公司 | Liquid crystal display panel |
| CN107037618A (en) * | 2017-04-29 | 2017-08-11 | 昆山龙腾光电有限公司 | The controllable liquid crystal display device in width visual angle |
| CN110824740B (en) * | 2019-11-11 | 2022-09-23 | 昆山龙腾光电股份有限公司 | Display panel, viewing angle control method of display panel and display device |
| CN111123562B (en) * | 2019-12-25 | 2022-09-20 | 昆山龙腾光电股份有限公司 | Touch display panel with switchable wide and narrow viewing angles and liquid crystal display device |
| CN111812896B (en) * | 2020-07-14 | 2022-08-26 | 昆山龙腾光电股份有限公司 | Touch peep-proof screen and control method thereof |
| CN111929953B (en) * | 2020-08-25 | 2022-09-23 | 昆山龙腾光电股份有限公司 | Double-box liquid crystal display panel and manufacturing method thereof |
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