CN109448654B - Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium - Google Patents
Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium Download PDFInfo
- Publication number
- CN109448654B CN109448654B CN201811588615.5A CN201811588615A CN109448654B CN 109448654 B CN109448654 B CN 109448654B CN 201811588615 A CN201811588615 A CN 201811588615A CN 109448654 B CN109448654 B CN 109448654B
- Authority
- CN
- China
- Prior art keywords
- gamma voltage
- visual angle
- user
- angle
- liquid crystal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/066—Adjustment of display parameters for control of contrast
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a method for adjusting the visual angle of a liquid crystal display, the liquid crystal display and a storage medium, wherein the method comprises the following steps: determining the sight direction of a user, and determining a corresponding visual angle according to the sight direction; and obtaining corresponding Gamma voltage according to the visual angle so as to adjust the visual angle of the liquid crystal display according to the Gamma voltage. According to the invention, after the visual angle of the user is obtained, the corresponding Gamma voltage is calculated according to the optimization algorithm of the Gamma voltage, and the actual Gamma voltage of the display is set to be the Gamma voltage obtained according to the optimization algorithm, so that the contrast of the display under the visual angle of the user is adjusted, and the user can clearly observe the realistic content of the display.
Description
Technical Field
The invention relates to the field of liquid crystal display, in particular to a method for adjusting the visual angle of a liquid crystal display, the liquid crystal display and a storage medium.
Background
At present, the liquid crystal display technology has been widely applied to various fields such as televisions, mobile phones, vehicle-mounted displays, industry, medical treatment and the like. The main principle of liquid crystal display is to modulate the light transmittance of polarized light through the birefringence effect of liquid crystal molecules to form controllable gray contrast, thereby achieving the purpose of displaying content. In the prior art, the visual angle of the liquid crystal display can be changed by changing the Gamma voltage of the liquid crystal display, but the visual angle of the liquid crystal display cannot be adjusted after the liquid crystal display leaves a factory.
Disclosure of Invention
The present invention provides a method for adjusting a viewing angle of a liquid crystal display, a liquid crystal display and a storage medium, so as to solve the problem that the viewing angle of the liquid crystal display cannot be adjusted.
In order to achieve the above object, the present invention provides a method for adjusting a viewing angle of a liquid crystal display, the method comprising the steps of:
determining the sight direction of a user, and determining a corresponding visual angle according to the sight direction;
and obtaining corresponding Gamma voltage according to the visual angle so as to adjust the visual angle of the liquid crystal display according to the Gamma voltage.
Optionally, the step of obtaining the corresponding Gamma voltage according to the viewing angle includes:
determining a corresponding preset reference visual angle according to the visual angle;
and calculating to obtain Gamma voltages corresponding to the visual angles according to the standard Gamma voltages respectively corresponding to the preset reference visual angles.
Optionally, the preset reference visual angle corresponding to the visual angle is a preset reference visual angle closest to the visual angle;
the step of calculating the Gamma voltage corresponding to the viewing angle according to the standard Gamma voltages respectively corresponding to the preset reference viewing angles comprises the following steps:
and acquiring corresponding standard Gamma voltage according to the closest preset reference visual angle of the visual angle, and taking the corresponding standard Gamma voltage as the Gamma voltage corresponding to the visual angle.
Optionally, the preset reference visual angles corresponding to the viewing angles are the closest preset reference visual angles respectively corresponding to the two sides of the viewing angles;
the step of calculating the Gamma voltage corresponding to the viewing angle according to the standard Gamma voltages respectively corresponding to the preset reference viewing angles comprises the following steps:
and obtaining corresponding standard Gamma voltage according to the closest preset reference visual angle respectively corresponding to the two sides of the visual angle, and calculating according to the corresponding standard Gamma voltage to obtain the Gamma voltage corresponding to the visual angle.
Optionally, the step of obtaining the corresponding standard Gamma voltage according to the closest preset reference visual angle respectively corresponding to the two sides of the viewing angle, and calculating the Gamma voltage corresponding to the viewing angle according to the corresponding standard Gamma voltage includes:
acquiring standard Gamma voltages respectively corresponding to the closest preset reference visual angles at the two sides of the visual angle;
determining a weight coefficient of the standard Gamma voltage according to the angle difference between the visual angle and the closest preset reference visual angle at the two sides;
and obtaining the Gamma voltage corresponding to the visual angle according to the standard Gamma voltage and the corresponding weight coefficient respectively corresponding to the preset reference visual angles at the two sides of the visual angle.
Optionally, when there are multiple users, the step of obtaining corresponding Gamma voltages according to the viewing angles to adjust the viewing angle of the liquid crystal display according to the Gamma voltages includes:
respectively calculating Gamma voltage corresponding to each user according to the visual angle of each user;
and calculating to obtain optimized Gamma voltage according to the Gamma voltage corresponding to each user so as to adjust the visual angle of the liquid crystal display according to the optimized Gamma voltage.
Optionally, the step of calculating an optimized Gamma voltage according to the Gamma voltage corresponding to each user includes:
determining a weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user;
and calculating to obtain weighted average sum of a plurality of Gamma voltages according to the Gamma voltage corresponding to each user and the weight coefficient corresponding to each Gamma voltage, and taking the weighted average sum as the optimized Gamma voltage.
Optionally, the step of determining the weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user includes:
obtaining the contrast of the liquid crystal display under each Gamma voltage according to the Gamma voltage corresponding to each user;
and determining the weight coefficient corresponding to each Gamma voltage according to all the contrasts.
In addition, to achieve the above object, the present invention also provides a liquid crystal display including: the processor is used for executing the program to adjust the visual angle of the liquid crystal display so as to realize the steps of the method for adjusting the visual angle of the liquid crystal display.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium, having a program for adjusting a viewing angle of a liquid crystal display stored thereon, where the program for adjusting a viewing angle of a liquid crystal display is executed by a processor to implement the steps of the method for adjusting a viewing angle of a liquid crystal display as described above.
According to the method for adjusting the visual angle of the liquid crystal display, the liquid crystal display and the storage medium, which are provided by the embodiment of the invention, the display acquires the sight direction of a user observing the display and determines the viewing angle observed by the user at the moment according to the sight direction of the user. After the processor obtains the visual angle of the user, the corresponding Gamma voltage is obtained according to the visual angle, and the actual Gamma voltage of the display is set to be the Gamma voltage obtained according to the visual angle, so that after the liquid crystal display leaves a factory, the visual angle of the liquid crystal display can be flexibly adjusted according to different visual angles of the display observed by the user, the user can clearly observe the content displayed by the display, and the phenomenon that the viewing effect is influenced by the phenomenon that the color distortion is generated when the user watches the content of the display is avoided.
Drawings
FIG. 1 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for adjusting a viewing angle of a liquid crystal display according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a detailed process of step S20 in the second embodiment of the method for adjusting the viewing angle of the LCD according to the present invention;
FIG. 4 is a flowchart illustrating a detailed process of step S23 in the fourth embodiment of the method for adjusting the viewing angle of an LCD according to the present invention;
FIG. 5 is a graph showing a contrast ratio of a display according to a viewing angle in a seventh embodiment of the method for adjusting a viewing angle of a liquid crystal display according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a display, or a terminal device with a display function such as a television, a smart phone, a tablet computer, an electronic book reader, an MP3(Moving Picture Experts Group Audio Layer III, motion Picture Experts compression standard Audio Layer 3) player, an MP4(Moving Picture Experts Group Audio Layer IV, motion Picture Experts compression standard Audio Layer 4) player, a portable computer and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and so on, which are not described herein again.
The processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and execute the following steps implemented in the method for adjusting the viewing angle of the liquid crystal display:
determining the sight direction of a user, and determining a corresponding visual angle according to the sight direction;
and obtaining corresponding Gamma voltage according to the visual angle so as to adjust the visual angle of the liquid crystal display according to the Gamma voltage.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
determining a corresponding preset reference visual angle according to the visual angle;
and calculating to obtain Gamma voltages corresponding to the visual angles according to the standard Gamma voltages respectively corresponding to the preset reference visual angles.
Further, according to the closest preset reference visual angle of the visual angle, obtaining the corresponding standard Gamma voltage, and taking the corresponding standard Gamma voltage as the Gamma voltage corresponding to the visual angle.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
and obtaining corresponding standard Gamma voltage according to the closest preset reference visual angle respectively corresponding to the two sides of the visual angle, and calculating according to the corresponding standard Gamma voltage to obtain the Gamma voltage corresponding to the visual angle.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
acquiring standard Gamma voltages respectively corresponding to the closest preset reference visual angles at the two sides of the visual angle;
determining a weight coefficient of the standard Gamma voltage according to the angle difference between the visual angle and the closest preset reference visual angle at the two sides;
and obtaining the Gamma voltage corresponding to the visual angle according to the standard Gamma voltage and the corresponding weight coefficient respectively corresponding to the preset reference visual angles at the two sides of the visual angle.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
when a plurality of users exist, respectively calculating Gamma voltage corresponding to each user according to the visual angle of each user;
and calculating to obtain optimized Gamma voltage according to the Gamma voltage corresponding to each user so as to adjust the visual angle of the liquid crystal display according to the optimized Gamma voltage.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
determining a weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user;
and calculating to obtain weighted average sum of a plurality of Gamma voltages according to the Gamma voltage corresponding to each user and the weight coefficient corresponding to each Gamma voltage, and taking the weighted average sum as the optimized Gamma voltage.
Further, the processor 1001 may be configured to call the program for adjusting the viewing angle of the liquid crystal display stored in the memory 1005, and further perform the following operations:
obtaining the contrast of the liquid crystal display under each Gamma voltage according to the Gamma voltage corresponding to each user;
and determining the weight coefficient corresponding to each Gamma voltage according to all the contrasts.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
Referring to fig. 2, fig. 2 is a schematic flow chart of a method for adjusting a viewing angle of a liquid crystal display according to a first embodiment of the present invention, wherein the method for adjusting the viewing angle of the liquid crystal display includes the following steps:
step S10, determining the sight direction of the user, and determining the corresponding visual angle according to the sight direction;
the processor of the display can acquire the sight line direction of the user when the user faces the display in a normal working state, in this embodiment, a horizontal visual angle of the display is taken as an example for description, and the processor can obtain an angle formed by the user and a vertical direction of the display when the user watches the display, that is, a viewing angle or a sight line angle of the user watching the display, according to the sight line direction of the user and an actual position of the user.
The viewing angle of the display represents a set of viewing angles at which a user can clearly view all content on the display from different directions, the user being able to clearly view the content displayed on the display when the user's viewing angle is within the viewing angle range of the display; when the viewing angle of the user exceeds the visual angle range of the display, a color distortion phenomenon occurs, and the user cannot clearly and accurately observe the content displayed in the display. The visual angle when the visual line direction of the user is vertical to the display is marked as 0 degrees, and when the angle formed by the visual line direction of the user and the vertical direction of the display is on the left side of the vertical direction of the display, the visual line angle is a negative value; when the angle formed by the sight line direction of the user and the vertical direction of the display is on the right side of the vertical direction of the display, the sight line angle is a positive value, namely the visual angle range of the user is-90 degrees. It should be noted that the viewing angle of the display is theoretically 180 °, and in practical use, the viewing angle of the display is usually less than 180 °.
Step S20, obtaining a Gamma voltage corresponding to the viewing angle, and adjusting the viewing angle of the liquid crystal display according to the Gamma voltage.
After the processor determines the visual angle of the display watched by the user according to the sight line direction of the user, the processor calculates the relevant parameters corresponding to the display when the visual angle of the user can clearly watch the content of the display at the moment according to the actual watching visual angle of the user. In this embodiment, taking a Gamma voltage parameter of the display as an example, after determining a viewing angle at which a user observes the display, the processor obtains a corresponding Gamma voltage at which the user can clearly observe the display at the viewing angle according to an optimization algorithm of the Gamma voltage, and sets the Gamma voltage of the display to the Gamma voltage obtained according to the optimization algorithm to adjust a visual angle range of the display, so that the user can clearly observe contents displayed on the display.
In this embodiment, the processor of the display can acquire the line-of-sight direction of the user observing the display, and determine the viewing angle observed by the user at this time according to the line-of-sight direction of the user. After the processor obtains the visual angle of the user, the corresponding Gamma voltage is obtained according to the visual angle, and the actual Gamma voltage of the display is set to be the Gamma voltage obtained according to the visual angle, so that after the liquid crystal display leaves a factory, the visual angle of the liquid crystal display can be flexibly adjusted according to different visual angles of the display observed by the user, the user can clearly observe the content displayed by the display, and the phenomenon that the viewing effect is influenced by the phenomenon that the color distortion is generated when the user watches the content of the display is avoided.
Further, referring to fig. 3, fig. 3 is a detailed flowchart of step S20 in a second embodiment of the method for adjusting the viewing angle of the liquid crystal display according to the present invention, in this embodiment, the step S20 of obtaining the corresponding Gamma voltage according to the viewing angle includes:
step S21, determining a corresponding preset reference visual angle according to the visual angle;
and step S22, calculating Gamma voltages corresponding to the visual angles according to the standard Gamma voltages respectively corresponding to the preset reference visual angles.
In this embodiment, after determining the viewing angle of the user observing the display, the display determines the corresponding preset reference viewing angle according to the viewing angle of the user. The display tests a plurality of reference visual angles in advance to obtain standard Gamma voltage corresponding to each reference visual angle. Specifically, a plurality of preset reference visual angles are preset in the display. For each preset reference visual angle, measuring a VT (Voltage-Transmittance) curve under the preset reference visual angle, comparing the VT curve with a standard Gamma curve, calculating the difference between the transmittances of the VT curve and the standard Gamma curve under the same Voltage, and taking the Voltage corresponding to the minimum value of the Transmittance difference as the standard Gamma Voltage of the reference visual angle. It should be noted that, when setting the reference visible angle value, the reference visible angle value may be set at intervals according to the same angle difference; the reference visual angle value may also be set collectively around the viewing angle degree of 0 °. In addition, the standard Gamma voltage corresponding to the preset reference visual angle can be increased by increasing the number of the preset reference visual angles, so that the result of calculating the Gamma voltage corresponding to the user visual angle according to the preset reference visual angle and the corresponding standard Gamma voltage is more accurate, and the accuracy of calculating the Gamma voltage corresponding to the user visual angle is improved.
After obtaining the corresponding reference visual angle from the reference visual angle according to the visual angle of the user, calculating the Gamma voltage corresponding to the actual visual angle of the user by using the standard Gamma voltage value corresponding to the reference visual angle, thereby adjusting the visual angle of the display by setting the Gamma voltage of the display as the Gamma voltage corresponding to the visual angle of the user, and enabling the user to clearly watch the content of the display.
Further, in the second embodiment of the method for adjusting the viewing angle of the liquid crystal display according to the present invention, the preset reference viewing angle corresponding to the viewing angle is a preset reference viewing angle closest to the viewing angle, and the step S22 of calculating the Gamma voltages corresponding to the viewing angles according to the standard Gamma voltages respectively corresponding to the preset reference viewing angles includes:
step S221, according to the closest preset reference visual angle of the visual angle, obtaining a corresponding standard Gamma voltage, and taking the corresponding standard Gamma voltage as the Gamma voltage corresponding to the visual angle.
In this embodiment, after the display determines the viewing angle of the user, the display may determine a corresponding preset reference viewing angle according to the viewing angle of the user, and a plurality of reference viewing angles and Gamma voltages corresponding to the reference viewing angles are pre-stored in the display. And after the angle value of the user visual angle is obtained, taking the preset reference visual angle closest to the angle value of the user visual angle as the preset reference visual angle corresponding to the user visual angle in the plurality of preset reference visual angles. And acquiring standard Gamma voltage corresponding to the reference visual angle, taking the standard Gamma voltage as the Gamma voltage corresponding to the user visual angle, and adjusting the actual Gamma voltage of the display to the standard Gamma voltage, so that the user at the visual angle can clearly view the content displayed on the display.
Obviously, when the user viewing angle coincides with one of the preset reference viewing angles, the standard Gamma voltage corresponding to the preset reference viewing angle is the Gamma voltage corresponding to the current viewing angle of the user.
Further, in a third embodiment of the method for adjusting a viewing angle of a liquid crystal display according to the present invention, the preset reference viewing angles corresponding to the viewing angles are closest preset reference viewing angles corresponding to both sides of the viewing angles, respectively, and the step S22 of calculating the Gamma voltages corresponding to the viewing angles according to the standard Gamma voltages corresponding to the preset reference viewing angles includes:
and step S23, obtaining corresponding standard Gamma voltage according to the closest preset reference visual angle respectively corresponding to the two sides of the visual angle, and calculating the Gamma voltage corresponding to the visual angle according to the corresponding standard Gamma voltage.
In this embodiment, after the viewing angle of the user is determined, the display may determine the corresponding preset reference viewing angle according to the viewing angle of the user, the display may pre-store a plurality of reference viewing angles and Gamma voltages corresponding to the reference viewing angles, and after the angle value of the viewing angle of the user is obtained, the preset reference viewing angle with the two closest sides may be selected from the plurality of reference viewing angles. The most approximate preset reference visual angle on the right side of the visual angle of the user is a reference visual angle which is larger than the visual angle value and is closest to the visual angle, and the most approximate preset reference visual angle on the left side of the visual angle of the user is a reference visual angle which is smaller than the visual angle value and is closest to the visual angle. After the closest preset reference visual angle corresponding to the two sides and the standard Gamma voltage corresponding to the preset reference visual angle are determined, the Gamma voltage corresponding to the actual visual angle of the user is calculated according to an optimization algorithm in a display processor. Because the visual angle of the user is positioned between two adjacent reference visual angles in the preset multiple reference visual angles, the Gamma voltage corresponding to the visual angle of the user can be calculated through a preset algorithm according to the two reference visual angles on the two sides of the actual visual angle of the user and the corresponding Gamma value, and the Gamma voltage is set as the actual Gamma voltage of the display so that the user can observe the content on the display more clearly and comfortably.
It should be noted that, when the angle value of the user viewing angle is the same as a preset reference viewing angle in the plurality of preset reference viewing angles, the standard Gamma voltage corresponding to the preset reference viewing angle may be used as the Gamma voltage corresponding to the user viewing angle.
Further, referring to fig. 4, fig. 4 is a detailed flowchart illustrating a step S23 in a fourth embodiment of the method for adjusting a viewing angle of a liquid crystal display according to the present invention, in this embodiment, the step S23 obtains a corresponding standard Gamma voltage according to a closest preset reference viewing angle at each of two sides of a viewing angle, and calculates a Gamma voltage corresponding to the viewing angle according to the corresponding standard Gamma voltage, including:
step S231, obtaining standard Gamma voltages respectively corresponding to the closest preset reference visual angles at the two sides of the visual angle;
step S232, determining a weight coefficient of the standard Gamma voltage according to the angle difference between the visual angle and the closest preset reference visual angle at the two sides;
step S233, obtaining a Gamma voltage corresponding to the viewing angle according to the standard Gamma voltage and the corresponding weight coefficient respectively corresponding to the preset reference viewing angles at both sides of the viewing angle.
In this embodiment, after obtaining the closest preset reference viewing angle at both sides of the viewing angle of the user and the standard Gamma voltage corresponding to the preset reference viewing angle, the processor in the display calculates the angle difference between the viewing angle value of the user and the angle values of the reference viewing angles at both sides, determines the weight coefficients of the two standard Gamma voltages according to the calculated angle difference, obtains the weighted average sum of the two standard Gamma voltages according to the weight coefficients of the two standard Gamma voltages, and uses the calculated weighted average sum as the Gamma voltage corresponding to the viewing angle of the user.
Preferably, when the angle difference between the viewing angle of the user and the reference viewing angle of the left and right sides is α and β, G1 and G2 are standard Gamma voltages corresponding to the reference viewing angles of the left and right sides, respectively, the Gamma voltages corresponding to the viewing angle of the user may be according to the formula:
g ═ G1(β/(α + β)) + G2(α/(α + β)).
It should be noted that, in the preset reference visual angles of the display, the maximum value and the minimum value of the preset reference visual angle are extreme values of the visual angle of the display, that is, when the visual angle of the user exceeds the maximum value of the preset reference visual angle or is lower than the minimum value of the preset reference visual angle, the Gamma voltage of the display cannot enable the user to clearly observe all contents of the display within the adjustable range, that is, the visual angle of the user can enable the user to clearly observe the contents of the display by adjusting the Gamma voltage of the display within the actual visual angle range of the display. Within the actual visual angle range of the display, the more the preset reference visual angle is, the more accurate the Gamma voltage corresponding to the user visual angle calculated according to the standard Gamma voltage corresponding to the preset reference visual angle is.
Further, in a fifth embodiment of the method for adjusting the viewing angle of the liquid crystal display according to the present invention, when there are multiple users, the step S20 of obtaining the corresponding Gamma voltage according to the viewing angle, and the step of adjusting the viewing angle of the liquid crystal display according to the Gamma voltage includes:
step S24, respectively calculating Gamma voltage corresponding to each user according to the visual angle of each user;
and step S25, calculating to obtain optimized Gamma voltage according to the Gamma voltage corresponding to each user, and adjusting the visual angle of the liquid crystal display according to the optimized Gamma voltage.
In this embodiment, when there are multiple users observing the display, the display determines the viewing angle of each user respectively, and calculates the Gamma voltage corresponding to the viewing angle of each user according to the viewing angle of each user. After the visual angle of each user and the Gamma voltage corresponding to the visual angle are determined, the optimized Gamma voltage is calculated according to a preset algorithm, and the Gamma voltage of the display is set as the optimized Gamma voltage. Under the condition that the Gamma voltage is optimized, the display can enable a plurality of users to observe the content of the display simultaneously, and the Gamma voltage of the display is adjusted to the optimized Gamma voltage according to the actual visual angle of the users, so that the users can observe all the content displayed by the display clearly.
Further, in a sixth embodiment of the method for adjusting a viewing angle of a liquid crystal display according to the present invention, in the step S25, the step of calculating an optimized Gamma voltage according to the Gamma voltage corresponding to each user includes:
step S251, determining a weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user;
step S252, calculating a weighted average sum of a plurality of Gamma voltages according to the Gamma voltage corresponding to each user and the weight coefficient corresponding to each Gamma voltage, and using the weighted average sum as the optimized Gamma voltage.
In this embodiment, after the display determines the viewing angle of each user and the Gamma voltage corresponding to the viewing angle, a weight coefficient corresponding to each Gamma voltage is calculated by an algorithm preset in the display, a weighted average sum is calculated according to a plurality of Gamma voltages and the weight coefficients corresponding to the Gamma voltages, and the weighted average sum is used as an optimized Gamma voltage to adjust the voltage parameter of the display. The display dynamically calculates the optimized Gamma voltage of the display under the observation of the current user through the number of users actually observing the display and the observation visual angles respectively corresponding to the users and the Gamma voltages corresponding to the visual angles, and enables a plurality of users to clearly observe the display content of the display under different visual angles by adjusting the Gamma voltages of the display.
Further, in a seventh embodiment of the method for adjusting a viewing angle of a liquid crystal display according to the present invention, in the step S251, the step of determining a weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user includes:
step S252, obtaining the contrast of the liquid crystal display under each Gamma voltage according to the Gamma voltage corresponding to each user;
step S253, determining a weight coefficient corresponding to each Gamma voltage according to all the contrasts.
In this embodiment, a plurality of reference visual angles and Gamma voltages corresponding to the reference visual angles are preset in the display, the display sets the voltage parameters to the Gamma voltages corresponding to each reference visual angle, and calculates the contrast of the display under the Gamma voltages, thereby obtaining a fitting curve of the contrast varying with the visual angle within the visual angle range of the display. And obtaining the contrast corresponding to the corresponding visual angle from the fitting curve according to the observation visual angle of each user in the plurality of users and the Gamma voltage corresponding to the visual angle, and calculating the weight coefficient of the Gamma voltage corresponding to each visual angle through a preset weight coefficient algorithm according to the contrast corresponding to the actual visual angle of each user. The weight coefficient of each visual angle is calculated according to the contrast of the display under the Gamma voltage corresponding to the actual visual angle of the user, the importance degree of different visual angles to the voltage parameter adjustment of the display can be divided, namely, the influence on the optimized Gamma voltage finally calculated under different visual angles is different, and the adaptability of the display when a plurality of users observe the display is enhanced.
Fig. 5 is a fitting curve of contrast ratio with viewing angle in the range of viewing angles of the display generated according to the contrast ratio of the display at the Gamma voltage corresponding to each reference viewing angle. And obtaining the derivative of the point on the corresponding fitting curve at any visual angle theta according to the fitting curve. For example, as shown in fig. 5, R1, R2, and R3 are derivatives of points corresponding to viewing angles θ 1, θ 2, and θ 3 on the fitted curve, respectively, and when there are three users whose viewing angles are θ 1, θ 2, and θ 3, respectively, the weighting coefficients of the Gamma voltages corresponding to the viewing angles for each user are:
Wi＝Ri/(R1+R2+R3)(i＝1,2,3)
as can be seen from fig. 5, when the viewing angle of the user approaches 0 °, the derivative of the point on the fitted curve corresponding to the viewing angle tends to zero, i.e., the closer the viewing angle is to the direction perpendicular to the display, the lower the weight coefficient of the Gamma voltage corresponding to the viewing angle is; the farther the viewing angle is from the direction perpendicular to the display panel, the higher the weighting factor of the Gamma voltage corresponding to the viewing angle. That is, the Gamma voltage corresponding to the more skewed user viewing angle occupies a larger weight coefficient in the calculation of the optimized Gamma voltage.
Obviously, the weighting factor of the Gamma voltage corresponding to each viewing angle can also be set to be exponential or linear with the derivative of the point on the fitting curve corresponding to the viewing angle. Under the setting of the weighting coefficients, the user viewing angle deviating from the direction vertical to the display panel is more sensitive, and under the condition that a plurality of users watch the display, the Gamma voltage is mainly determined and optimized by the direction of the more sensitive user viewing angle.
Preferably, the weighting coefficient of the Gamma voltage corresponding to the viewing angle of each user can be further set as:
w1, W2, W3, 1/r1, 1/r2, 1/r3(r1, r2 and r3 are contrast ratios corresponding to the visual angles theta 1, theta 2 and theta 3 on a fitting curve respectively)
That is, the weight coefficient corresponding to the viewing angle of each user is inversely proportional to the contrast at the viewing angle, and under the setting of the weight coefficient, because the contrast corresponding to the viewing angle of the user close to the vertical display panel direction is larger, the optimized Gamma voltage is mainly determined by the Gamma voltages corresponding to the viewing angles of the user close to the vertical direction.
It should be noted that the algorithm of the contrast-to-loss weight coefficient of the display under the Gamma voltage corresponding to the viewing angle of the user may be modified according to different requirements, which is not described herein again.
Further, in an eighth embodiment of the method for adjusting the viewing angle of the liquid crystal display according to the present invention, in the step S10, the step of determining the direction of the line of sight of the user includes:
step S11, user image data shot by the camera module is obtained;
step S12, determining the direction of the user' S gaze from the user image data.
In this embodiment, a camera module is disposed on the display, when the display is in a normal operation state, the camera module can acquire image data of a user observing the display, and after acquiring the image data of the user shot by the camera module, a processor of the display can determine an observation position of the user and a sight line direction of the user observing the display according to the image data of the user. Through the camera module on the display, the visual direction of a user can be simply and conveniently acquired, the display can conveniently obtain the visual angle of the user, and the corresponding Gamma voltage is calculated, so that the voltage parameter of the display is adjusted.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which a program for adjusting a viewing angle of a liquid crystal display is stored, where the storage medium may be the Memory 1005 in the terminal in fig. 1, or may be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, and the computer-readable storage medium includes instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a television, etc.) having a processor to execute the method according to the embodiments of the present invention.
It is to be understood that throughout the description of the present specification, reference to the term "one embodiment", "another embodiment", "other embodiments", or "first through nth embodiments", etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, 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 process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A method for adjusting the visual angle of a liquid crystal display is characterized by comprising the following steps:
determining the sight direction of a user, and determining a corresponding visual angle according to the sight direction;
determining a corresponding preset reference visual angle according to the visual angle;
calculating to obtain Gamma voltages corresponding to the visual angles according to standard Gamma voltages respectively corresponding to the preset reference visual angles so as to adjust the visual angles of the liquid crystal display according to the Gamma voltages;
the preset reference visual angle corresponding to the visual angle is the closest preset reference visual angle corresponding to each of two sides of the visual angle;
the step of calculating the Gamma voltage corresponding to the viewing angle according to the standard Gamma voltages respectively corresponding to the preset reference viewing angles comprises the following steps:
acquiring corresponding standard Gamma voltage according to the closest preset reference visual angle corresponding to the two sides of the visual angle respectively, and calculating according to the corresponding standard Gamma voltage to obtain the Gamma voltage corresponding to the visual angle;
when the angle differences between the viewing angle and the left and right reference viewing angles are α and β, respectively, G1 and G2 are standard Gamma voltages corresponding to the left and right reference viewing angles, the Gamma voltages corresponding to the viewing angle can be according to the following formula: g ═ G1(β/(α + β)) + G2(α/(α + β)).
2. The method according to claim 1, wherein the step of obtaining the corresponding standard Gamma voltages according to the closest preset reference viewing angles at the two sides of the viewing angle and calculating the Gamma voltages corresponding to the viewing angle according to the corresponding standard Gamma voltages comprises:
acquiring standard Gamma voltages respectively corresponding to the closest preset reference visual angles at the two sides of the visual angle;
determining a weight coefficient of the standard Gamma voltage according to the angle difference between the visual angle and the closest preset reference visual angle at the two sides;
and obtaining the Gamma voltage corresponding to the visual angle according to the standard Gamma voltage and the corresponding weight coefficient respectively corresponding to the preset reference visual angles at the two sides of the visual angle.
3. The method of claim 1, wherein when there are multiple users, the step of obtaining corresponding Gamma voltages according to the viewing angles to adjust the viewing angle of the liquid crystal display according to the Gamma voltages comprises:
respectively calculating Gamma voltage corresponding to each user according to the visual angle of each user;
and calculating to obtain optimized Gamma voltage according to the Gamma voltage corresponding to each user so as to adjust the visual angle of the liquid crystal display according to the optimized Gamma voltage.
4. The method of claim 3, wherein the step of calculating an optimized Gamma voltage according to the Gamma voltage corresponding to each user comprises:
determining a weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user;
and calculating to obtain weighted average sum of a plurality of Gamma voltages according to the Gamma voltage corresponding to each user and the weight coefficient corresponding to each Gamma voltage, and taking the weighted average sum as the optimized Gamma voltage.
5. The method according to claim 4, wherein the step of determining the weight coefficient corresponding to each Gamma voltage according to the Gamma voltage corresponding to each user comprises:
obtaining the contrast of the liquid crystal display under each Gamma voltage according to the Gamma voltage corresponding to each user;
and determining the weight coefficient corresponding to each Gamma voltage according to all the contrasts.
6. A liquid crystal display, comprising a memory, a processor, and a program stored on the memory and executable on the processor for adjusting a viewing angle of the liquid crystal display, wherein: the program for adjusting the viewing angle of a liquid crystal display, when executed by the processor, implements the steps of the method for adjusting the viewing angle of a liquid crystal display according to any one of claims 1 to 5.
7. A computer-readable storage medium, wherein the computer-readable storage medium has stored thereon a program for adjusting the viewing angle of a liquid crystal display, and the program for adjusting the viewing angle of a liquid crystal display, when executed by a processor, implements the steps of the method for adjusting the viewing angle of a liquid crystal display according to any one of claims 1 to 5.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588615.5A CN109448654B (en) | 2018-12-20 | 2018-12-20 | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium |
| PCT/CN2019/126725 WO2020125727A1 (en) | 2018-12-20 | 2019-12-19 | Method for adjusting liquid crystal display viewing angle, liquid crystal display and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588615.5A CN109448654B (en) | 2018-12-20 | 2018-12-20 | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109448654A CN109448654A (en) | 2019-03-08 |
| CN109448654B true CN109448654B (en) | 2021-02-23 |
Family
ID=65535483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588615.5A Active CN109448654B (en) | 2018-12-20 | 2018-12-20 | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109448654B (en) |
| WO (1) | WO2020125727A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448654B (en) * | 2018-12-20 | 2021-02-23 | 深圳Tcl新技术有限公司 | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium |
| TWI766622B (en) * | 2021-03-18 | 2022-06-01 | 敦泰電子股份有限公司 | Display driving device and display device having the same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100419090B1 (en) * | 2001-02-19 | 2004-02-19 | 삼성전자주식회사 | Liquid crystal display device adapt to a view angle |
| CN103198801B (en) * | 2013-03-11 | 2015-02-04 | 深圳市华星光电技术有限公司 | Compensation method for flat display panel large-viewing-angle Mura area |
| CN103413535B (en) * | 2013-08-08 | 2016-12-28 | 深圳创维－Rgb电子有限公司 | A kind of method and apparatus improving LCDs angle of visibility scope |
| US9691351B2 (en) * | 2014-09-23 | 2017-06-27 | X Development Llc | Simulation of diffusive surfaces using directionally-biased displays |
| CN105825840B (en) * | 2016-06-03 | 2018-01-30 | 京东方科技集团股份有限公司 | A kind of optical compensation method, optical compensating member and display panel |
| CN107068096A (en) * | 2017-05-11 | 2017-08-18 | 京东方科技集团股份有限公司 | Gamma voltage compensation systems, method and display device |
| CN109448654B (en) * | 2018-12-20 | 2021-02-23 | 深圳Tcl新技术有限公司 | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium |
-
2018
- 2018-12-20 CN CN201811588615.5A patent/CN109448654B/en active Active
-
2019
- 2019-12-19 WO PCT/CN2019/126725 patent/WO2020125727A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020125727A1 (en) | 2020-06-25 |
| CN109448654A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109166559B (en) | Gamma value debugging method and device for display panel | |
| US9966022B2 (en) | Display method and display device applied to MVA wide viewing angle liquid crystal screen | |
| US10867573B2 (en) | Common voltage control circuit and method, display panel and display device | |
| CN109448654B (en) | Method for adjusting visual angle of liquid crystal display, liquid crystal display and storage medium | |
| US11244651B2 (en) | Color gamut matching method, device, display terminal and readable storage medium | |
| CN109036327A (en) | Gamma value adjusting method and device of display panel and computer readable storage medium | |
| US9761192B2 (en) | Method and display apparatus for improving uniformity of displayed image | |
| CN109712592A (en) | Brightness adjusting method and display device | |
| US20080143755A1 (en) | Method, medium, and system implementing wide angle viewing | |
| US20200388243A1 (en) | Multi-screen color correction method and electronic device using the same | |
| CN107731201B (en) | Screen brightness adjusting method and device | |
| CN104571474A (en) | Method and device for adaptively adjusting contents displayed on terminal screen | |
| CN108806616A (en) | Method for controlling backlight thereof, device and computer readable storage medium | |
| US20140218411A1 (en) | Method and System for Improving a Color Shift of Viewing Angle of Skin Color of an LCD Screen | |
| CN110660365A (en) | Regional backlight control method, display and storage medium | |
| CN111061373A (en) | Eyeball tracking calibration method and device and wearable equipment | |
| US9886890B2 (en) | Display device and method for displaying an image thereon | |
| CN105825840A (en) | Optical compensating method and device and display panel | |
| CN111554218B (en) | Display parameter determination method and device and display equipment | |
| JP2007316492A (en) | Display apparatus | |
| CN113010066B (en) | Display parameter determination method and device | |
| KR20130091685A (en) | Electronic device | |
| CN109410892B (en) | Image processing method and display device | |
| CN112506338A (en) | Equipment control method, device and equipment based on full vision | |
| JP2012203415A (en) | System for dynamically adjusting font size and adjustment method for the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |