CN112162422B - Display panel and display device - Google Patents
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- CN112162422B CN112162422B CN202011048864.2A CN202011048864A CN112162422B CN 112162422 B CN112162422 B CN 112162422B CN 202011048864 A CN202011048864 A CN 202011048864A CN 112162422 B CN112162422 B CN 112162422B
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 40
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- 230000009466 transformation Effects 0.000 claims description 10
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136213—Storage capacitors associated with the pixel electrode
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
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- Physics & Mathematics (AREA)
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- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
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- Liquid Crystal Display Device Control (AREA)
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Abstract
The application provides a display panel and display device, the array substrate in this display panel includes: a pixel unit arranged in an array, the pixel unit comprising: a first sub-pixel and a second sub-pixel; the first sub-pixel comprises a first liquid crystal capacitor, the second sub-pixel comprises a second liquid crystal capacitor, and the pretilt angle of the first liquid crystal capacitor is smaller than that of the second liquid crystal capacitor. In the application, the pixel unit comprises a first sub-pixel and a second sub-pixel, and the pretilt angles of the liquid crystal capacitors in the two sub-pixels are different, so that the two liquid crystal capacitors have different minimum deflection angles, and when a user watches from different angles, the brightness of the pixel unit is different, and therefore wide visual angle display or narrow visual angle display is achieved. When the method is used for different application scenes, different display visual angles can be beneficial to protecting the privacy of the user and improving the safety of user information.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of the technology level, most users carry mobile terminals with them, and there are many scenes in which the users use the mobile terminals, including many public areas such as subways, buses, elevators, and the like.
When a user uses a mobile terminal in a public area, some application scenarios with high privacy are sometimes involved, such as viewing private communication messages, viewing private mails, or in some cases, inputting a specific password.
However, due to the large traffic in the public area, when the user uses the mobile terminal in the public area, the information displayed by the mobile terminal may be watched by others, so that the privacy of the user is leaked, and the security of the user information is reduced.
Disclosure of Invention
The application provides a display panel and a display device, which are used for solving the problems in the prior art.
In a first aspect, the present application provides a display panel, including an array substrate, the array substrate including: a pixel cell arranged in an array, the pixel cell comprising: a first sub-pixel and a second sub-pixel;
the first sub-pixel comprises a first liquid crystal capacitor, the second sub-pixel comprises a second liquid crystal capacitor, and the pre-tilt angle of the first liquid crystal capacitor is smaller than that of the second liquid crystal capacitor.
In some embodiments, the first sub-pixel is respectively connected to a first scan line and a first data line, the first scan line is used for providing a first driving voltage for the first sub-pixel, and the first data line is used for providing a first data voltage for the first sub-pixel;
the second sub-pixel is respectively connected with a second scanning line and a second data line, the second scanning line is used for providing a second driving voltage for the second sub-pixel, and the second data line is used for providing a second data voltage for the second sub-pixel;
wherein the first driving voltage is different from the second driving voltage, and/or the first data voltage is different from the second data voltage.
In some embodiments, the first scan line is different from the second scan line, and the first data line is different from the second data line;
the first driving voltage is different from the second driving voltage, and the first data voltage is different from the second data voltage.
In some embodiments, the first scan line and the second scan line are the same, and the first data line and the second data line are different;
the first data voltage is different from the second data voltage.
In some embodiments, the first scan line and the second scan line are different, and the first data line and the second data line are the same;
the first driving voltage is different from the second driving voltage.
In some embodiments, the first scan line and the second scan line are the same, and the first data line and the second data line are the same;
any one of the first sub-pixel and the second sub-pixel is connected to a corresponding scanning line through a voltage control circuit.
In some embodiments, the voltage control circuit comprises a voltage transformation circuit or a switching circuit.
In some embodiments, the first subpixel and the second subpixel have different areas.
In some embodiments, the first subpixel further includes a first thin film transistor and a first storage capacitor, a gate of the first thin film transistor is connected to the first scan line, a source of the first thin film transistor is connected to the first data line, and a drain of the first thin film transistor is connected to the first storage capacitor and the first liquid crystal capacitor;
the second sub-pixel further comprises a second thin film transistor and a second storage capacitor, a grid electrode of the second thin film transistor is connected with the second scanning line, a source electrode of the second thin film transistor is connected with the second data line, and a drain electrode of the second thin film transistor is connected with the second storage capacitor and the second liquid crystal capacitor.
In a second aspect, the present application provides a display device comprising: the display panel, the scanning driver, the data driver, the time sequence controller and the Gamma chip are arranged on the display panel;
the scanning driver is respectively connected with each scanning line in the array substrate;
the data driver is respectively connected with each data line in the array substrate;
the time sequence controller is respectively connected with the scanning driver, the data driver and the Gamma chip, and the Gamma chip is also connected with the data driver;
the time sequence controller comprises a TCON chip, a Gamma curve is arranged in the TCON chip, and the TCON chip is used for readjusting data according to target brightness required by the display device during display and the Gamma curve to obtain corresponding brightness data and sending the brightness data to the data driver;
the Gamma chip is used for providing Gamma reference voltage for the data driver;
the data driver is used for converting the brightness data sent by the TCON chip into data voltages corresponding to the pixel units according to the Gamma reference voltage.
In some embodiments, the display device comprises at least a first display area and a second display area;
the Gamma curve corresponding to the pixel unit in the first display area is different from the Gamma curve corresponding to the pixel unit in the second display area.
The application provides a display panel and display device, the array substrate in this display panel includes: a pixel unit arranged in an array, the pixel unit comprising: a first sub-pixel and a second sub-pixel; the first sub-pixel comprises a first liquid crystal capacitor, the second sub-pixel comprises a second liquid crystal capacitor, and the pretilt angle of the first liquid crystal capacitor is smaller than that of the second liquid crystal capacitor. In the application, the pixel unit comprises a first sub-pixel and a second sub-pixel, and the pretilt angles of the liquid crystal capacitors in the two sub-pixels are different, so that the two liquid crystal capacitors have different minimum deflection angles, and when a user watches from different angles, the brightness of the pixel unit is different, thereby realizing wide visual angle display or narrow visual angle display. When the method is used for different application scenes, different display visual angles can be beneficial to protecting the privacy of the user and improving the safety of user information.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram of different display brightness of a display screen of a terminal device in different viewing angle directions;
FIG. 2 is a schematic view of an array substrate according to some embodiments of the present disclosure;
FIG. 3 is a schematic diagram illustrating deflection angles of the first sub-pixel 110 and the second sub-pixel 120 according to some embodiments of the present disclosure;
FIG. 4 is a graph illustrating the relationship between the display luminance and the deflection angle of the first sub-pixel 110 and the second sub-pixel 120 according to some embodiments of the present disclosure;
FIG. 5 is a schematic diagram of a pixel cell 100 according to some embodiments of the present disclosure;
FIG. 6 is a schematic diagram of the connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, according to some embodiments of the present disclosure;
FIG. 7 is another schematic diagram of the connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, according to some embodiments of the present disclosure;
FIG. 8 is a schematic diagram of the connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, according to some embodiments of the present disclosure;
FIG. 9 is a further schematic diagram of the connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, according to some embodiments of the present disclosure;
FIG. 10 is a schematic view of a display device provided in some embodiments of the present application;
FIG. 11 is a schematic illustration of different GAMMA curves under different viewing angle information in some embodiments of the present application;
FIG. 12 is a schematic diagram of a display device including different display regions according to some embodiments of the present disclosure.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article of commerce or system in which the element is comprised.
Fig. 1 is a schematic diagram of different display luminances of a display screen of a terminal device in different viewing angle directions, where a line width corresponds to the display luminance, and the wider the line, the higher the display luminance. Referring to fig. 1, the display luminance of the display screen viewed in a direction perpendicular to the viewing angle of the display screen (i.e., the direction D1 in fig. 1) is the highest, and the display luminance of the display screen viewed in a direction inclined toward other directions (e.g., the front, rear, left, and right directions) is gradually decreased. For example, the display luminance viewed in the direction of D2 in fig. 1 is lower than the display luminance viewed in the direction of D1.
When a user uses the terminal device, the user usually views the display screen along the direction D1 in fig. 1, and at this time, if another user views the display screen through the direction D2, the other user can also view the display content on the display screen, thereby revealing the privacy of the user.
The application provides a display panel and a display device, which aim to solve the technical problems in the prior art.
The application provides a display panel and display device, the array substrate in this display panel includes: a pixel unit arranged in an array, the pixel unit comprising: a first sub-pixel and a second sub-pixel; the first sub-pixel comprises a first liquid crystal capacitor, the second sub-pixel comprises a second liquid crystal capacitor, and the pretilt angle of the first liquid crystal capacitor is smaller than that of the second liquid crystal capacitor. In the application, the pixel unit comprises a first sub-pixel and a second sub-pixel, and the pretilt angles of the liquid crystal capacitors in the two sub-pixels are different, so that the two liquid crystal capacitors have different minimum deflection angles, and when a user watches from different angles, the brightness of the pixel unit is different, and therefore wide visual angle display or narrow visual angle display is achieved. When the method is used for different application scenes, different display visual angles can be beneficial to protecting the privacy of the user and improving the safety of user information.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
In some embodiments, a display panel is provided, which includes an array substrate. Fig. 2 is a schematic view of an array substrate according to some embodiments of the present application, and as shown in fig. 2, the array substrate includes: pixel unit 100 arranged in an array, the pixel unit 100 comprising: a first sub-pixel 110 and a second sub-pixel 120.
The pixel unit 100 may be one of an R (red) pixel unit, a G (green) pixel unit, and a B (blue) pixel unit, and the R pixel unit, the G pixel unit, and the B pixel unit together form a pixel.
Referring to fig. 2, the first sub-pixel 110 includes a first lc capacitor 112, the second sub-pixel 120 includes a second lc capacitor 122, and a pretilt angle of the first lc capacitor 112 is smaller than a pretilt angle of the second lc capacitor 122. Specifically, in the case that the pretilt angle of the first liquid crystal capacitor 112 is smaller than the pretilt angle of the second liquid crystal capacitor 122, the first subpixel 110 may be understood as a narrow viewing angle subpixel, and the second subpixel 120 may be understood as a wide viewing angle subpixel.
Fig. 3 is a schematic view of deflection angles corresponding to the first sub-pixel 110 and the second sub-pixel 120 in some embodiments of the present disclosure, as shown in fig. 3, where the minimum deflection angle is an angle with the highest display brightness, and the maximum deflection angle is an angle with the lowest display brightness. When the pretilt angle of the first lc capacitor 112 is smaller than the pretilt angle of the second lc capacitor 122, that is, the first sub-pixel 110 is a narrow viewing angle sub-pixel, and the second sub-pixel 120 is a wide viewing angle sub-pixel, the minimum deflection angle corresponding to the first sub-pixel 110 is smaller than the minimum deflection angle corresponding to the second sub-pixel 120.
Fig. 4 is a graph illustrating the relationship between the display brightness and the deflection angle of the first sub-pixel 110 and the second sub-pixel 120 according to some embodiments of the present disclosure, as shown in fig. 4, the minimum deflection angle of the first sub-pixel 110 is 0 degree, and the display brightness gradually decreases as the deflection angle increases, so that the first sub-pixel 110 can realize narrow viewing angle display.
Referring to fig. 4, the minimum deflection angle of the second sub-pixel 120 is greater than the minimum deflection angle of the first sub-pixel 110, that is, the viewing angle at which the display brightness of the second sub-pixel 120 is the highest is greater with respect to the first sub-pixel 110, and therefore, the second sub-pixel 120 can realize wide viewing angle display.
Based on the above principle, in some embodiments of the present application, the pixel unit 100 includes the first sub-pixel 110 and the second sub-pixel 120, and on one hand, the pretilt angles of the liquid crystal capacitors in the two sub-pixels are different, so that the two liquid crystal capacitors have different minimum deflection angles, and when a user views from different angles, the brightness of the pixel unit 100 is different, thereby implementing wide viewing angle display or narrow viewing angle display.
In some embodiments, the first sub-pixel 110 is respectively connected to a first scan line and a first data line, the first scan line is used for providing a first driving voltage for the first sub-pixel 110, and the first data line is used for providing a first data voltage for the first sub-pixel 110; the second sub-pixel 120 is respectively connected to a second scan line and a second data line, the second scan line is used for providing a second driving voltage for the second sub-pixel 120, and the second data line is used for providing a second data voltage for the second sub-pixel 120; the first driving voltage is different from the second driving voltage, and/or the first data voltage is different from the second data voltage.
For the first sub-pixel 110 and the second sub-pixel 120, at least one of the data voltage and the driving voltage of the two sub-pixels is different, which includes three cases: (1) the data voltages of the first sub-pixel 110 and the second sub-pixel 120 are the same, but the driving voltages are different; (2) the data voltages of the first sub-pixel 110 and the second sub-pixel 120 are different, but the driving voltages are the same; (3) the first sub-pixel 110 and the second sub-pixel 120 have different data voltages and different driving voltages.
The driving voltage is used for controlling the display switch states of the two sub-pixels, and the data voltage is used for controlling the display brightness of the two sub-pixels.
For the case (1), when the data voltages of the two sub-pixels are the same but the driving voltages are different, the first sub-pixel 110 may be specifically controlled to display, and the second sub-pixel 120 may not display, so that narrow viewing angle display may be implemented; in addition, the first sub-pixel 110 may be controlled to display, and the second sub-pixel 120 may also display, so that wide viewing angle display may be achieved.
For the case (2), when the data voltages of the two sub-pixels are different but the driving voltages are the same, the display switch states of the two sub-pixels are the same, i.e. displaying simultaneously or not displaying simultaneously, and when the two sub-pixels are displaying simultaneously, referring to fig. 4, the display luminance viewed from different viewing angles is the sum of the luminances of the two sub-pixels. In addition, because the data voltages of the two sub-pixels are different, the display brightness of the two sub-pixels can be respectively controlled, and thus the multi-level visual angle display of the full display area is realized.
In the case of (3), when the data voltage and the driving voltage of the two kinds of sub-pixels are different, the display on-off states and the display brightness of the two kinds of sub-pixels can be controlled simultaneously, so that the multi-level viewing angle display of different display areas can be realized.
In the present embodiment, the pixel unit 100 includes a first sub-pixel 110 and a second sub-pixel 120, and on one hand, the pre-tilt angles of the liquid crystal capacitors in the two sub-pixels are different, so that the two liquid crystal capacitors have different minimum deflection angles, and when a user views from different angles, the brightness of the pixel unit 100 is different, thereby implementing wide viewing angle display or narrow viewing angle display. On the other hand, at least one of the data voltage and the driving voltage of the two sub-pixels is different, wherein when the data voltage is different, multi-level visual angle display of a full display area can be realized; when the driving voltages are different, wide viewing angle display or narrow viewing angle display of different display areas can be realized; when the data voltage and the driving voltage are different, multi-level viewing angle display of different display areas can be realized. Therefore, when different application scenes are aimed at, the displayed visual angle is controlled, so that the privacy of the user can be protected, and the safety of user information is improved.
In some embodiments, the specific structure and operation principle of the first sub-pixel 110 and the second sub-pixel 120 are explained.
Fig. 5 is a schematic diagram of a pixel unit 100 according to some embodiments of the present disclosure, and as shown in fig. 5, the first sub-pixel 110 further includes a first thin film transistor 114 and a first storage capacitor 116, a gate of the first thin film transistor 114 is connected to the first scan line, a source of the first thin film transistor 114 is connected to the first data line, and a drain of the first thin film transistor 114 is connected to the first storage capacitor 116 and the first liquid crystal capacitor 112. The second sub-pixel 120 further includes a second thin film transistor 124 and a second storage capacitor 126, a gate of the second thin film transistor 124 is connected to the second scan line, a source of the second thin film transistor 124 is connected to the second data line, and a drain of the second thin film transistor 124 is connected to the second thin film transistor 124 and the second storage capacitor 126.
Specifically, taking the first sub-pixel 110 as an example, the scan line SL controls the operating state of the first thin film transistor 114 by providing a gate driving voltage to the first thin film transistor 114 in the first sub-pixel 110. When the scan line SL controls the first tft 114 to be in an on state, the data voltage on the data line DL is transmitted to the first storage capacitor 116 through the source of the first tft 114, so that the first storage capacitor 116 stores the corresponding data voltage; when the scan line SL controls the first tft 114 to be in an off state, the data voltage stored in the first storage capacitor 116 is applied to the first liquid crystal capacitor 112, so that the first liquid crystal capacitor 112 realizes a liquid crystal tilt angle corresponding to the data voltage.
The working principle of the second sub-pixel 120 is similar to that of the first sub-pixel 110, and is not described herein again.
It is understood that the connection relationships between the first sub-pixel 110 and the second sub-pixel 120 and the data line and the scan line in fig. 5 are only exemplary representations in some embodiments of the present application, and the specific connection relationships in the present application are not limited.
In this embodiment, different display effects can be achieved by controlling the display states and display luminances of the sub-pixels through the data lines and the scan lines.
In some embodiments, when the data voltages of the first sub-pixel 110 and the second sub-pixel 120 are different and the driving voltages are also different, the connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, will be explained.
Fig. 6 is a schematic diagram illustrating a connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and a scan line and a data line, respectively, in some embodiments of the present invention, as shown in fig. 6, the first scan line is different from the second scan line, and the first data line is different from the second data line, and the first sub-pixel 110 is connected to the first scan line SL1 and the first data line DL 1; the second subpixel 120 is connected to the second scan line SL2 and the second data line DL 2; the first driving voltage provided by the first scan line SL1 to the first sub-pixel 110 is different from the second driving voltage provided by the second scan line SL2 to the second sub-pixel 120; the first data voltage provided by the first data line DL1 to the first sub-pixel 110 is different from the second data voltage provided by the second data line DL2 to the second sub-pixel 120.
In this embodiment, the two sub-pixels are respectively connected to different data lines and different scan lines, so that different data lines can provide different data voltages for the two sub-pixels, and different scan lines can provide different driving voltages for the two sub-pixels. When the data voltage and the driving voltage of the two sub-pixels are different, the display switch states and the display brightness of the two sub-pixels can be controlled at the same time, and therefore multi-level visual angle display of different display areas is achieved.
In some embodiments, in the case that the data voltages of the first sub-pixel 110 and the second sub-pixel 120 are different and the driving voltages are the same, the connection relationships between the first sub-pixel 110 and the second sub-pixel 120 and the scan line and the data line, respectively, are explained.
Fig. 7 is a schematic diagram illustrating a connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and a scan line and a data line, respectively, in some embodiments of the present invention, as shown in fig. 7, the first scan line and the second scan line are the same (herein collectively referred to as the first scan line SL1), the first data line and the second data line are different, and the first sub-pixel 110 is connected to the first scan line SL1 and the first data line DL 1; the second sub-pixel 120 is connected to the first scan line SL1, and the second sub-pixel 120 is further connected to the second data line DL 2; the first data voltage provided by the first data line DL1 to the first sub-pixel 110 is different from the second data voltage provided by the second data line DL2 to the second sub-pixel 120.
In this embodiment, the two sub-pixels are respectively connected to different data lines and the same scan line, so that the different data lines can provide different data voltages for the two sub-pixels, and the same scan line can provide the same driving voltage for the two sub-pixels. When the data voltages of the two sub-pixels are different, but the driving voltages are the same, the display switch states of the two sub-pixels are the same, i.e. displaying at the same time or not displaying at the same time, and when the two sub-pixels are displaying at the same time, the display brightness viewed from different viewing angles is the sum of the brightness of the two sub-pixels. In addition, the display brightness of the two sub-pixels can be respectively controlled due to the fact that the data voltages of the two sub-pixels are different, and therefore multi-level visual angle display of the full display area is achieved.
In some embodiments, in the case where the data voltages of the first subpixel 110 and the second subpixel 120 are the same and the driving voltages are different, the connection relationship between the first subpixel 110 and the second subpixel 120 and the scan line and the data line, respectively, is explained.
Fig. 8 is a schematic diagram illustrating a connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and a scan line and a data line, respectively, in some embodiments of the present invention, as shown in fig. 8, the first scan line and the second scan line are different, the first data line and the second data line are the same (herein, collectively referred to as the first data line DL1), and the first sub-pixel 110 is connected to the first scan line SL1 and the first data line DL 1; the second sub-pixel 120 is connected to the first data line DL1, and the second sub-pixel 120 is further connected to the second scan line SL 2; the first driving voltage provided by the first scan line SL1 to the first sub-pixel 110 is different from the second driving voltage provided by the second scan line SL2 to the second sub-pixel 120.
In this embodiment, the two sub-pixels are respectively connected to the same data line and different scan lines, so that the same data line can provide the same data voltage for the two sub-pixels, and the different scan lines can provide different driving voltages for the two sub-pixels. When the data voltages of the two sub-pixels are the same but the driving voltages are different, the first sub-pixel 110 can be controlled to display, and the second sub-pixel 120 does not display, so that narrow viewing angle display can be realized; in addition, the first sub-pixel 110 may be controlled to display, and the second sub-pixel 120 may also display, so that wide viewing angle display may be achieved.
In some embodiments, in the case where the data voltages of the first subpixel 110 and the second subpixel 120 are the same and the driving voltages are different, the connection relationship between the first subpixel 110 and the second subpixel 120 and the scan line and the data line, respectively, is explained.
Fig. 9 is a schematic diagram illustrating a connection relationship between the first sub-pixel 110 and the second sub-pixel 120 and a scan line and a data line, respectively, in some embodiments of the present invention, as shown in fig. 9, the first scan line and the second scan line are the same (herein collectively referred to as a first scan line SL1), the first data line and the second data line are the same (herein collectively referred to as a first data line DL1), and both the first sub-pixel 110 and the second sub-pixel 120 are connected to a first data line DL 1; one of the first sub-pixel 110 and the second sub-pixel 120 is connected to the first scan line SL1, and the other of the first sub-pixel 110 and the second sub-pixel 120 is connected to the first scan line SL1 through the voltage control circuit 130.
The driving voltage provided by the first scan line SL1 to one of the first sub-pixel 110 and the second sub-pixel 120 is different from the driving voltage provided by the first scan line SL1 to the other of the first sub-pixel 110 and the second sub-pixel 120 through the voltage control circuit 130.
It is to be understood that the connection relationship shown in fig. 9 is a case where the first subpixel 110 is directly connected to the first scan line SL1, and the second subpixel 120 is connected to the first scan line SL1 through the voltage control circuit 130. In some embodiments, it is also possible that the second sub-pixel 120 is directly connected to the first scan line SL1, and the first sub-pixel 110 is connected to the first scan line SL1 through the voltage control circuit 130.
In this embodiment, the two sub-pixels are respectively connected to the same data line and the same scan line, specifically, one of the two sub-pixels is directly connected to the scan line, and the other is connected to the scan line through the voltage control circuit 130, so that the data line can provide the same data voltage for the two sub-pixels, and the scan line can provide different driving voltages for the two sub-pixels through a direct connection or an indirect connection.
When the driving voltages are different, the opening amplitudes of the first thin film transistor 114 and the second thin film transistor 124 are different, so that although the data lines connected to the first sub-pixel 110 and the second sub-pixel 120 are the same, the data voltages stored in the first storage capacitor 116 and the second storage capacitor 126 are different, so that the display brightness of the first sub-pixel 110 is different from that of the second sub-pixel 120, and thus, multi-level viewing angle display is realized.
In some embodiments, the voltage control circuit 130 includes a voltage transformation circuit or a switching circuit.
Referring to fig. 9, the voltage transformation circuit may be a voltage boosting circuit or a voltage dropping circuit, and when the voltage transformation circuit is a voltage boosting circuit, the opening amplitude of the second thin film transistor 124 may be increased, that is, greater than the opening amplitude of the first thin film transistor 114, so that the data voltage stored in the second storage capacitor 126 is greater than the data voltage stored in the first storage capacitor 116, and the display luminance of the first sub-pixel 110 is different from that of the second sub-pixel 120.
When the voltage transformation circuit is a voltage reduction circuit, the opening amplitude of the second thin film transistor 124 can be reduced, i.e., smaller than the opening amplitude of the first thin film transistor 114, so that the data voltage stored in the second storage capacitor 126 is smaller than the data voltage stored in the first storage capacitor 116, and the display luminance of the first sub-pixel 110 is different from that of the second sub-pixel 120.
When the voltage transformation circuit is a switch circuit, if the switch circuit is in an on state, the driving voltage can be transmitted to the gate of the second thin film transistor 124, i.e. the second thin film transistor 124 is controlled to be in an on state, thereby controlling the second sub-pixel 120 to be in a display state. If the switch circuit is in the off state, the driving voltage cannot be transmitted to the gate of the second thin film transistor 124, i.e. the second thin film transistor 124 is in the off state, thereby controlling the second sub-pixel 120 to be in the off state. Therefore, when the voltage transformation circuit is a switching circuit, narrow viewing angle display or wide viewing angle display can be realized.
It is understood that the transformation circuit or the switch circuit may be an existing circuit structure, and the present application does not limit the specific structure of the transformation circuit or the switch circuit.
In some embodiments, the first subpixel 110 and the second subpixel 120 are different in area. Specifically, when there is a specific viewing angle range requirement, the areas of the first sub-pixel 110 and the second sub-pixel 120 may be designed to be different.
For example, in a display region where a user performs a highly private action, if a narrow viewing angle is required, such as when inputting a password, the area of the first subpixel 110 may be set to be larger than the area of the second subpixel 120.
For example, in a display region where a user performs a behavior with low privacy, if a wider range of a wide viewing angle is required, such as displaying public information, the area of the first subpixel 110 may be set smaller than the area of the second subpixel 120.
In this embodiment, the area of the first sub-pixel 110 is different from that of the second sub-pixel 120, so that the requirement of the special viewing angle range under a specific condition can be satisfied.
In some embodiments, a display device is provided.
Fig. 10 is a schematic view of a display device according to some embodiments of the present application, as shown in fig. 10, the display device includes: in the previous embodiments of the present application, the display panel includes the array substrate 10, the scan driver 20, the data driver 30, the timing controller 40, and the Gamma chip 50.
The array substrate 10 includes pixel units 100, and the scan driver 20 is connected to each scan line SL in the array substrate 10; the data driver 30 is connected to each data line DL in the array substrate 10; the timing controller 40 is respectively connected with the scan driver 20, the data driver 30 and the Gamma chip 50, and the Gamma chip 50 is also connected with the data driver 30; the timing controller 40 includes a TCON chip.
Specifically, a Gamma curve is built in the TCON chip, and the TCON chip is configured to perform data readjustment according to target brightness and the Gamma curve required by the display device when displaying, to obtain corresponding brightness data, and send the brightness data to the data driver 30; the Gamma chip 50 is used to provide Gamma reference voltage to the data driver 30; the data driver 30 is configured to convert the luminance data sent by the TCON chip into a data voltage corresponding to each pixel unit according to the Gamma reference voltage.
Fig. 11 is a schematic diagram of different GAMMA curves under different viewing angle information in some embodiments of the present application, as shown in fig. 11, an abscissa in the diagram represents gray scale, and an ordinate represents luminance, a conventionally used GAMMA curve is a GAMMA2.2 curve in the diagram, and the GAMMA2.2 is designed according to a sensitivity of human eyes to gray scale luminance, and represents luminance differences of different gray scales, including 256 gray scales of 0 to 255. Based on this, if the resolution of the large viewing angle is reduced, the GAMMA curve of the wide viewing angle sub-pixel (i.e. the second sub-pixel) can be modified to match the wide viewing angle sub-pixel portion as required, so as to achieve the purpose of non-resolution of the large viewing angle. The setting of the wide viewing angle sub-pixel GAMMA curve can be adjusted and designed according to different subjective requirements for large viewing angles.
For example, if it is desired to reduce the brightness at a large viewing angle and to appropriately reduce the contrast, that is, to realize a display at a narrow viewing angle, the GAMMA curve may be reduced as a whole based on GAMMA2.2, and the low gray portion may be further reduced, for example, the GAMMA D curve in fig. 10.
For another example, if it is desired to make the large viewing angle as clear as possible, i.e., to realize a wide viewing angle display, the GAMMA curve can be increased appropriately based on GAMMA2.2, for example, GAMMA a, GAMMA B, and GAMMA C curves in fig. 10.
In some embodiments, multiple GAMMA curves can be designed in the TCON chip of the same display device to meet the requirement of multi-level viewing angle display.
In some embodiments, a display device includes at least a first display region and a second display region; the Gamma curve corresponding to the pixel unit in the first display area is different from the Gamma curve corresponding to the pixel unit in the second display area.
Fig. 12 is a schematic diagram of a display device including different display regions according to some embodiments of the present disclosure, as shown in fig. 12, the display device includes a first display region P1 and a second display region P2, which have different Gamma curves, for example, the Gamma curve corresponding to the pixel unit in P1 may be the Gamma D curve in fig. 10, and the Gamma curve corresponding to the pixel unit in P2 may be the Gamma a, Gamma B, or Gamma C curve in fig. 10, so that the first display region P1 may be a narrow viewing angle display region, and the second display region P2 may be a wide viewing angle display region.
In some embodiments, the display apparatus may be particularly applied to a display device set in a public place. For example, on a display device of a bank, an area for displaying information may be provided in the second display area P2 in fig. 12 for display, thereby functioning to display the information for public viewing at a wide viewing angle for more users to view. And the area for inputting the password may be provided in the first display area P1 in fig. 12 for display, thereby playing a role of narrow viewing angle display, so as to protect the privacy of the user and improve the security of the user information.
In some embodiments, referring to fig. 12, the display device may further include a third display region, the third display region may be a normal display region, and a Gamma curve corresponding to a pixel unit in the third display region may be a Gamma2.2 curve in fig. 10.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (11)
1. A display panel comprising an array substrate, the array substrate comprising: a pixel unit arranged in an array, the pixel unit comprising: a first sub-pixel and a second sub-pixel;
the first sub-pixel comprises a first liquid crystal capacitor, the second sub-pixel comprises a second liquid crystal capacitor, the pretilt angle of the first liquid crystal capacitor is smaller than the pretilt angle of the second liquid crystal capacitor, the first sub-pixel is a narrow viewing angle sub-pixel, the second sub-pixel is a wide viewing angle sub-pixel, the sum of the viewing angle displayed by the wide viewing angle sub-pixel and the viewing angle displayed by the narrow viewing angle sub-pixel is a wide viewing angle, when the display brightness is the brightness corresponding to the first sub-pixel, narrow viewing angle display is presented, and when the display brightness is the sum of the brightness corresponding to the first sub-pixel and the brightness corresponding to the second sub-pixel, wide viewing angle display is presented.
2. The display panel according to claim 1, wherein the first sub-pixel is connected to a first scan line and a first data line, respectively, the first scan line being configured to provide a first driving voltage to the first sub-pixel, the first data line being configured to provide a first data voltage to the first sub-pixel;
the second sub-pixel is respectively connected with a second scanning line and a second data line, the second scanning line is used for providing a second driving voltage for the second sub-pixel, and the second data line is used for providing a second data voltage for the second sub-pixel;
wherein the first driving voltage is different from the second driving voltage, and/or the first data voltage is different from the second data voltage.
3. The display panel according to claim 2, wherein the first scan line is different from the second scan line, and wherein the first data line is different from the second data line;
the first driving voltage is different from the second driving voltage, and the first data voltage is different from the second data voltage.
4. The display panel according to claim 2, wherein the first scan line and the second scan line are the same, and wherein the first data line and the second data line are different;
the first data voltage is different from the second data voltage.
5. The display panel according to claim 2, wherein the first scan line and the second scan line are different, and the first data line and the second data line are the same;
the first driving voltage is different from the second driving voltage.
6. The display panel according to claim 2, wherein the first scan line and the second scan line are the same, and wherein the first data line and the second data line are the same;
any one of the first sub-pixel and the second sub-pixel is connected to a corresponding scanning line through a voltage control circuit.
7. The display panel according to claim 6, wherein the voltage control circuit comprises a voltage transformation circuit or a switching circuit.
8. The display panel according to any one of claims 1 to 7, wherein the first sub-pixel and the second sub-pixel have different areas.
9. The display panel according to any one of claims 2 to 7, wherein the first subpixel further comprises a first thin film transistor and a first storage capacitor, a gate of the first thin film transistor is connected to the first scan line, a source of the first thin film transistor is connected to the first data line, and a drain of the first thin film transistor is connected to the first storage capacitor and the first liquid crystal capacitor;
the second sub-pixel further comprises a second thin film transistor and a second storage capacitor, a grid electrode of the second thin film transistor is connected with the second scanning line, a source electrode of the second thin film transistor is connected with the second data line, and a drain electrode of the second thin film transistor is connected with the second storage capacitor and the second liquid crystal capacitor.
10. A display device, comprising: the display panel, the scan driver, the data driver, the timing controller, and the Gamma chip of any one of claims 1 to 9;
the scanning driver is respectively connected with each scanning line in the array substrate;
the data driver is respectively connected with each data line in the array substrate;
the time sequence controller is respectively connected with the scanning driver, the data driver and the Gamma chip, and the Gamma chip is also connected with the data driver;
the time sequence controller comprises a TCON chip, a Gamma curve is arranged in the TCON chip, and the TCON chip is used for readjusting data according to target brightness required by the display device during display and the Gamma curve to obtain corresponding brightness data and sending the brightness data to the data driver;
the Gamma chip is used for providing Gamma reference voltage for the data driver;
the data driver is used for converting the brightness data sent by the TCON chip into data voltages corresponding to the pixel units according to the Gamma reference voltage.
11. The display device according to claim 10, wherein the display device includes at least a first display region and a second display region;
the Gamma curve corresponding to the pixel unit in the first display area is different from the Gamma curve corresponding to the pixel unit in the second display area.
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