CN114373432A - Lateral-entering type liquid crystal display panel and control method thereof - Google Patents
Lateral-entering type liquid crystal display panel and control method thereof Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 154
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- 239000000758 substrate Substances 0.000 claims description 18
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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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The application discloses a lateral-entering type liquid crystal display panel and a control method thereof. The control method of the lateral type liquid crystal display panel comprises the following steps: dividing a display area of the side-entry liquid crystal display panel into a plurality of areas from near to far from a light source; acquiring the rising response time of each area; setting the rising response time of the reference area as the reference response time by taking one area as the reference area, and calculating the pixel voltage compensation value required to be adjusted in other areas; and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas. By means of the mode, the response time of different areas of the lateral type liquid crystal display panel can be changed, the consistency of the whole response time of the lateral type liquid crystal display panel is guaranteed, and therefore the display effect is improved.
Description
Technical Field
The present disclosure relates to display devices, and particularly to a lateral liquid crystal display panel and a control method thereof.
Background
For small and medium size display products, such as displays, because of the environmental limitations, portability, and thin-type displays, side-entry light sources are mostly used, which makes the temperature of the display panel closer to the light bar higher, and the temperature higher, the viscosity coefficient (viscosity for short) of the liquid crystal is lower, and the rising response time and the falling response time of the liquid crystal display are shown in the following formulas:
wherein gamma is the viscosity coefficient of liquid crystal, epsilon0In terms of vacuum dielectric constant,. DELTA.. di-elect cons.of the liquid crystal, E is the driving electric field intensity, EthIs the threshold electric field strength, tOnFor rising response time, tOffTo decrease the response time. According to the formula 1 and the formula 2, if the temperature of the display area far away from the lateral light source is lower than the temperature of the display area near the lateral light source, the response time of the display area far away from the lateral light source is longer, and particularly when the picture is played, the picture quality problem of blurred picture tailing is shown due to the difference of the rising response time.
Disclosure of Invention
The present application mainly solves the technical problem of providing a lateral liquid crystal display panel and a control method thereof to solve the problem that when a picture is played, the picture quality of the trailing blur of the picture will be shown due to different rising corresponding times.
In order to solve the above technical problem, a first technical solution adopted by the present application is to provide a method for controlling a lateral type liquid crystal display panel, including: dividing a display area of the side-entry liquid crystal display panel into a plurality of areas from near to far from a light source; acquiring the rising response time of each area; setting the rising response time of the reference area as the reference response time by taking one area as the reference area, and calculating the pixel voltage compensation value required to be adjusted in other areas; and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas.
The step of calculating the pixel voltage compensation value to be adjusted in other regions by using one of the regions as a reference region and setting the rising response time of the reference region as a reference response time includes: setting the rising response time of the reference area as the reference response time by taking one of the areas as the reference area, and acquiring the corresponding pixel voltage difference as the reference pixel voltage difference; acquiring pixel voltage differences of other areas as pixel voltage differences to be adjusted; and calculating the difference value between the reference pixel voltage difference and the pixel voltage difference to be adjusted to obtain a pixel voltage compensation value.
The control method further comprises the following steps: obtaining the viscosity coefficient, the vacuum dielectric constant, the dielectric difference, the threshold electric field intensity and the liquid crystal thickness of the liquid crystal; the calculation method of the reference pixel voltage difference is as follows:
wherein, V1Is a reference pixel voltage difference, gamma1Viscosity coefficient, epsilon, of liquid crystal as reference region0Dielectric constant in vacuum, dielectric difference of liquid crystal, EthIs threshold electric field intensity, d is liquid crystal thickness, t1Is a reference response time; the calculation method of the pixel voltage difference to be adjusted is as follows:
wherein, V2For the pixel voltage difference, t2For the rise response time, gamma, of the pixel to be adjusted2The viscosity coefficient of the liquid crystal is the area to be adjusted; the pixel voltage compensation value is calculated in the following way: and delta V is V2-V1.
If the rising response time is less than the reference response time, the pixel voltage is reduced by the absolute value of the corresponding pixel voltage compensation value; and if the rising response time is larger than the reference response time, the pixel voltage is increased by the absolute value of the corresponding pixel voltage compensation value.
Before the step of dividing the display area of the lateral type liquid crystal display panel into a plurality of areas from near to far away from the light source, the method further comprises the following steps: and debugging the lateral liquid crystal display panel to ensure that the lateral liquid crystal display panel uniformly emits light.
The control method further comprises the following steps: recording the pixel voltage value corresponding to each area of the side-in type liquid crystal display panel after the side-in type liquid crystal display panel uniformly emits light as an initial driving voltage value; in the step of compensating the pixel voltage compensation value into the pixel voltage corresponding to the other region, the initial driving voltage value of each region is added to the pixel voltage compensation value as the debugged driving voltage value to compensate the pixel voltage compensation value into the pixel voltage corresponding to the other region.
When the viscosity coefficient of the liquid crystal in each region is obtained, the temperature of the liquid crystal layer in the region is obtained first, and then the viscosity coefficient of the liquid crystal in the region is obtained through a temperature relation table of the liquid crystal viscosity coefficient and the liquid crystal layer.
The display area of the side-entry liquid crystal display panel is divided into three areas from near to far away from the light source.
The middle area is used as a reference area.
In order to solve the above technical problem, the second technical solution adopted by the present application is: the lateral liquid crystal display panel comprises an array substrate and a color film substrate, wherein a liquid crystal layer is clamped between the array substrate and the color film substrate, and the lateral liquid crystal display panel adopts the control method of any one of the lateral liquid crystal display panels.
The beneficial effect of this application is: the lateral liquid crystal display panel comprises a plurality of regions, wherein the regions are arranged in a horizontal direction; then acquiring the rising response time of each region; setting the rising response time of the reference area as the reference response time by taking one area as the reference area, and calculating the pixel voltage compensation value required to be adjusted in other areas; and finally, compensating the pixel voltage compensation value into the pixel voltages corresponding to other areas. The pixel voltage of each region is voltage-compensated by calculating a pixel voltage compensation value between each region and the reference region. The pixel voltages with different sizes are applied to two ends of liquid crystal in different temperature areas of the display panel, specifically, according to the position of the side-entering light source, in an area which is closer to the side-entering light source, the response time is shorter as the temperature is higher and the viscosity coefficient of the liquid crystal in the area is lower, after pixel voltage compensation is carried out in the area, the pixel voltage difference is smaller, the problem that the response time of the area with higher temperature is shorter than that of the area with lower temperature is solved, the consistency of the whole response time of the side-entering liquid crystal display panel is ensured, and therefore the display effect is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic flow chart diagram illustrating an embodiment of a method for controlling a lateral-type liquid crystal display panel according to the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of step S13 in FIG. 1;
FIG. 3 is a schematic cross-sectional view of a lateral type LCD panel according to an embodiment of the present invention.
Reference numerals: 100. a lateral entrance type liquid crystal display panel; 101. a color film substrate; 102. an array substrate; 103. a liquid crystal layer; 104. frame glue; 105. side income formula light source.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
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 application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plural" includes at least two in general, but does not exclude the presence of at least one.
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.
It should be understood that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The temperature of the display area close to the lateral light source is lower, and the response time of the display area far away from the lateral light source is longer, and particularly when a picture is played, the picture trailing blurring problem is presented, and the farther the display area is away from the lateral light source, the more serious the blurring situation is.
Based on the problem, the invention provides a control method of a lateral type liquid crystal display panel. The following describes a control method of a lateral type liquid crystal display panel provided by the present application in detail with reference to the embodiments.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating a control method of a side-entry lcd panel according to an embodiment of the present invention. The alignment method of the lateral type liquid crystal display panel of the embodiment comprises the following steps:
step S11: the display area of the side-entry liquid crystal display panel is divided into a plurality of areas from near to far away from the light source.
Specifically, pixel electrodes arranged in an array manner are arranged on two longitudinal sides of the side-entry liquid crystal display panel, the pixel electrodes are also divided into a plurality of areas from near to far away from the light source, and the areas divided by the pixel electrodes correspond to the areas divided by the display area one to one. The pixel electrode is used for providing pixel voltage for the liquid crystal in the corresponding area divided into a plurality of areas, and the pixel voltage can cause liquid crystal molecules in the area to be twisted to form an inclination angle so as to control the transmission and the shielding of the light source, thereby displaying pictures such as light and shade of the light source on the panel. The display panel obtained in the embodiment of the present application is a lateral type liquid crystal display panel, that is, the display device adopts a lateral type light source, and the lateral type light source can be located at the left end, the right end, and the upper end and the lower end of the panel. The upper end and the lower end of the panel are provided with pixel electrodes which are arranged in an array mode, and the pixel electrodes are divided into a plurality of areas along the direction perpendicular to the extending direction of the side-in type light source, namely the display area of the side-in type liquid crystal display panel is divided into a plurality of areas along the direction perpendicular to the extending direction of the side-in type light source.
Further, before the step S11, the method may further include:
and debugging the lateral liquid crystal display panel to ensure that the lateral liquid crystal display panel uniformly emits light. And recording the pixel voltage value corresponding to each area of the lateral type liquid crystal display panel after the lateral type liquid crystal display panel uniformly emits light as an initial driving voltage value.
Specifically, the light emitting brightness of the display panel is also determined by the pixel voltages at two ends of the display area, and the purpose of debugging the uniform light emission of the lateral type liquid crystal display panel to make the display area have the same brightness is to make the pixel voltage difference values of different areas obtained by the subsequent test caused by the temperature difference caused by the different distances between the lateral type liquid crystal display panel and the lateral type light source not to calculate the difference of the pixel voltage difference caused by the brightness difference of the different areas within the compensation value. After the pixel voltage of each area of the display panel is compensated, the response time of each area of the display panel is the same on the premise that the display panel uniformly emits light with the same brightness.
Step S12: the rise response time of each region is acquired.
Specifically, the response time of each region of the liquid crystal display panel refers to the response speed of each region to a signal, which is expressed in the time required for each pixel point to turn from dark to light or from light to dark on the display screen. The lateral side of the lateral liquid crystal display panel is provided with a light source, the existence of the light source can generate heat, the temperature of the panel at the position closer to the light source is higher, when the temperature of the panel is higher, the viscosity coefficient of the liquid crystal is lower, and the response time is in positive correlation with the viscosity coefficient of the liquid crystal, so that different areas on the panel are shown to have different response times, and the problem of trailing blurring is caused. The response time includes a rising response time and a falling response time, the rising response time is the time required by the picture to change from white to black when the pixel voltage changes from low voltage to high voltage, and the falling response time is the time required by the picture to change from black to white when the pixel voltage changes from high voltage to low voltage. The temperature affects the rise response time, which is related to the intensity of the pixel voltage applied to the pixel electrode, to the same extent as the fall response time. In this embodiment, the rise response time of the response times is obtained, and the voltage compensation is performed by using the difference between the rise response times of the respective regions.
Further, in the present embodiment, the rise response time of each region is obtained by a test of the response time testing machine.
Step S13: and taking one area as a reference area, setting the rising response time of the reference area as the reference response time, and calculating the pixel voltage compensation value of the other area to be adjusted.
In this embodiment, the backlight source is located on the left side of the display panel, and the display area of the display panel is sequentially divided into a plurality of areas from left to right, so that the temperature of the areas from left to right decreases one by one, which is expressed as that the liquid crystal viscosity coefficients of the areas from left to right increase one by one, and the rising response time of the areas from left to right increases one by one. The reference area may be any area from left to right, wherein the pixel voltage compensation value that needs to be adjusted in the other area is determined by the difference between the rise response time of the area to be adjusted and the reference response time, and the larger the difference between the rise response time of the other area and the reference response time is, the larger the pixel voltage value that needs to be adjusted is.
Step S14: and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas.
In this embodiment, the backlight is located on the left side of the display panel, and the temperatures of the regions from left to right decrease one by one, so that the liquid crystal viscosity coefficient of the region located on the left side of the reference region is greater than that of the reference region, the rising response time of the region on the left side is less than that of the reference region, and the pixel voltage compensation value of the region needs to be subtracted from the pixel voltage of the region on the left side of the reference region. After the pixel voltages corresponding to other areas are adjusted, the response time of all the areas of the display panel is consistent with the reference response time.
According to the scheme, different pixel voltages are applied to the pixel electrodes in different temperature areas on the display panel by controlling the pixel voltage values applied to the two sides of the display panel. In a region where the temperature is high, a small pixel voltage is applied to the pixel electrode, and in a region where the temperature is low, a large pixel voltage is applied to the pixel electrode. The liquid crystal display panel has higher pixel voltage in a lower-temperature area, so that the problem of longer response time caused by larger viscosity coefficient of liquid crystal in the lower-temperature area is solved, the consistency of the whole response time of the lateral liquid crystal display panel is ensured, and the display effect is improved.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating an embodiment of step S13 in fig. 1. The step S13 may specifically include:
s131: and setting the rising response time of the reference area as the reference response time by taking one of the areas as the reference area, and acquiring the corresponding pixel voltage difference as the reference pixel voltage difference.
In the present embodiment, the lateral light source is located on the left side of the display panel, the display area of the lateral liquid crystal display panel is divided into three areas from left to right, and the middle area is used as the reference area. Specifically, the rise response time of the middle area is used as the reference response time, and the reference response time can be obtained through the test of the response time test machine. In another embodiment, the reference region may preferably be a region close to the backlight source, and the response time of the region close to the backlight source may be shorter.
Further, the step S131 may specifically include: obtaining the viscosity coefficient, the vacuum dielectric constant, the dielectric difference, the threshold electric field intensity and the liquid crystal thickness of the liquid crystal; the calculation formula of the reference pixel voltage difference is as follows:
wherein, V1Is a reference pixel voltage difference, gamma1Viscosity coefficient, epsilon, of liquid crystal as reference region0Dielectric constant in vacuum, dielectric difference of liquid crystal, EthIs threshold electric field intensity, d is liquid crystal thickness, t1Is the reference response time.
The vacuum dielectric constant, the dielectric difference of the liquid crystal, the threshold electric field strength and the liquid crystal thickness are all parameters displayed by the display panel and can be measured and obtained by a corresponding measuring instrument. The obtaining of the viscosity coefficient of the liquid crystal in the reference region may specifically include: when the viscosity coefficient of the liquid crystal in the reference region is obtained, the temperature of the liquid crystal layer in the reference region is obtained first, and then the viscosity coefficient of the liquid crystal in the reference region is obtained through a temperature relation table of the liquid crystal viscosity coefficient and the liquid crystal layer. Specifically, the viscosity coefficient of the liquid crystal layer is related to the temperature of the liquid crystal layer. In this embodiment, the liquid crystal viscosity coefficient of the panel reference region may be obtained through a temperature relation table of the liquid crystal viscosity coefficient and the liquid crystal layer after the temperature of the liquid crystal in the panel reference region is measured.
S132: and acquiring the pixel voltage difference of other areas as the pixel voltage difference to be adjusted.
In the present embodiment, the lateral light source is located on the left side of the display panel, and the display area of the lateral liquid crystal display panel is divided into three areas from left to right, the middle area is a reference area, and two areas on the left and right sides of the middle area are other areas. The distance between the two areas on the left side and the distance between the two areas on the right side and the lateral entrance light source are different, the temperature in the areas is different, the rising response time of the left area is short, the pixel voltage difference is large, the rising response time of the right area is long, and the pixel voltage difference is small.
Further, the step S132 may specifically be:
wherein, V2For the pixel voltage difference, t2For the rise response time, epsilon, of the pixel to be adjusted0Dielectric constant in vacuum, dielectric difference of liquid crystal, EthIs threshold electric field intensity, d is liquid crystal thickness, gamma2Is the viscosity coefficient of the liquid crystal in the area to be adjusted. The vacuum dielectric constant, the dielectric difference of the liquid crystal, the threshold electric field strength and the liquid crystal thickness are consistent with the corresponding values of the display panel in the reference area, and the rising response time of the pixel to be adjusted can be obtained through the test of the response time testing machine. The obtaining of the viscosity coefficient of the liquid crystal in the region to be adjusted may specifically include: when the viscosity coefficient of the liquid crystal in the area to be adjusted is obtained, the temperature of the liquid crystal layer in the area to be adjusted is obtained, and then the viscosity coefficient of the liquid crystal in the area to be adjusted is obtained through a relation table of the viscosity coefficient of the liquid crystal and the temperature of the liquid crystal layer. Specifically, the viscosity coefficient of the liquid crystal layer is related to the temperature of the liquid crystal layer. In this embodiment, the liquid crystal viscosity coefficient of the panel reference region may be obtained through a temperature relation table of the liquid crystal viscosity coefficient and the liquid crystal layer after the temperature of the liquid crystal in the panel reference region is measured.
S133: and calculating the difference value between the reference pixel voltage difference and the pixel voltage difference to be adjusted to obtain a pixel voltage compensation value.
The pixel voltage compensation value is calculated in the following manner: and delta V is V2-V1. Specifically, Δ V is a compensation value of a pixel voltage to be adjusted, V2 is a pixel voltage difference of a region to be adjusted, and V1 is a voltage difference of a reference pixel.
Further, after step S133, the method may further include: in the step of compensating the pixel voltage compensation value into the pixel voltage corresponding to the other region, the initial driving voltage value of each region is added to the pixel voltage compensation value to be used as the debugged driving voltage value, so as to compensate the pixel voltage compensation value into the pixel voltage corresponding to the other region. If the rising response time is less than the reference response time, the pixel voltage is reduced by the absolute value of the corresponding pixel voltage compensation value; and if the rising response time is larger than the reference response time, the pixel voltage is increased by the absolute value of the corresponding pixel voltage compensation value. In the present embodiment, if the rising response time of the region located on the left side of the reference region is shorter than the reference response time, the pixel voltage needs to be decreased by the absolute value of the corresponding pixel voltage compensation value. In the area located on the right side of the reference area, the rising response time is longer than the reference response time, and the pixel voltage needs to be increased by the absolute value of the corresponding pixel voltage compensation value. In another embodiment, in a region closer to the lateral entrance light source than the reference region, the rise response time is shorter than the reference response time, and it is necessary to decrease the pixel voltage by the absolute value of the corresponding pixel voltage compensation value, and in a region farther from the lateral entrance light source than the reference region, the rise response time is longer than the reference response time, and it is necessary to increase the pixel voltage by the absolute value of the corresponding pixel voltage compensation value.
In this way, the pixel voltage of each region is voltage-compensated by calculating the pixel voltage compensation value between each region and the reference region. The pixel voltages with different sizes are applied to two ends of liquid crystal in different temperature areas of the display panel, specifically, according to the position of the side-entering light source, in an area which is closer to the side-entering light source, the response time is shorter as the temperature is higher and the viscosity coefficient of the liquid crystal in the area is lower, after pixel voltage compensation is carried out in the area, the pixel voltage difference is smaller, the problem that the response time of the area with higher temperature is shorter than that of the area with lower temperature is solved, the consistency of the whole response time of the side-entering liquid crystal display panel is ensured, and therefore the display effect is improved.
The application also provides a lateral entrance type liquid crystal display panel and a control method adopting the lateral entrance type liquid crystal display panel. Referring to fig. 3, fig. 3 is a schematic cross-sectional structure diagram of an embodiment of a side-entry lcd panel according to the present application. In this embodiment, the lateral liquid crystal display panel 100 includes an array substrate 102 and a color filter substrate 101. A liquid crystal layer 103 is interposed between the array substrate 102 and the color filter substrate 101.
The left side of the panel of this embodiment has an edge light source 105, and a sealant 104 for sealing liquid crystal is further disposed between the array substrate 102 and the color filter substrate 101.
Furthermore, a common electrode (not shown) is further disposed on a surface of the color film substrate 101 facing the liquid crystal layer 103, and pixel electrodes (not shown) are disposed in an array on a surface of the array substrate 102 facing the liquid crystal layer 103. The pixel electrode is divided into a plurality of regions along a direction perpendicular to the extending direction of the lateral light source 105, a control module (not shown) is connected to the pixel electrode of each region in the non-display region of the lateral liquid crystal display panel 100, and the voltage difference between the pixel electrode and the common electrode of each region is controlled by the control module. Here, the pixel voltage difference of the area closer to the lateral entrance light source 105 is smaller, and the pixel voltage difference of the area farther from the lateral entrance light source 105 is larger. Specifically, the value of the pixel voltage corresponding to each region after the lateral type liquid crystal display panel 100 emits light uniformly is recorded as the initial driving voltage value. In the present embodiment, the lateral type liquid crystal display panel 100 is divided into three regions from left to right, and the middle region is used as a reference region. And testing the rising response time of the middle area by using the response time testing machine as the reference response time, and acquiring the rising response time of other areas by using the response time testing machine. The liquid crystal viscosity of each region of the edge-type liquid crystal display panel 100 is obtained. The pixel voltage difference of each area is calculated according to the liquid crystal viscosity coefficient, the rising response time and other parameters through an existing formula, the difference value between the pixel voltage difference of other areas to be adjusted and the pixel voltage difference of a reference area is used as a pixel voltage compensation value, the voltage difference between the pixel electrode and the common electrode of each area is adjusted through the control module, the pixel voltage compensation value is compensated to the pixel electrode of the corresponding area, and the compensation of the pixel voltage difference of different display areas of the lateral type liquid crystal display panel 100 is achieved.
In this way, the pixel voltage compensation value between each region and the reference region is calculated, and the pixel voltage of each region is subjected to voltage compensation. The pixel voltages with different sizes are applied to two ends of liquid crystals in different temperature areas of the lateral-in type liquid crystal display panel, specifically, according to the position of the lateral-in type light source, in an area which is closer to the lateral-in type light source, the response time is shorter when the temperature is higher and the viscosity coefficient of the liquid crystals in the area is lower, after pixel voltage compensation is carried out in the area, the pixel voltage difference is smaller, the problem that the response time of the area with higher temperature is shorter than that of the area with lower temperature is solved, the consistency of the overall response time of the lateral-in type liquid crystal display panel is ensured, and therefore the display effect is improved.
The above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all modifications that can be made by using equivalent structures or equivalent principles in the contents of the specification and the drawings or directly or indirectly applied to other related technical fields are also included in the scope of the present application.
Claims (10)
1. A control method of a lateral liquid crystal display panel is characterized in that the control method of the lateral liquid crystal display panel comprises the following steps:
dividing a display area of the lateral type liquid crystal display panel into a plurality of areas from near to far according to the mode of being far away from a light source;
acquiring the rising response time of each region;
setting the rising response time of one of the reference areas as the reference response time by taking one of the areas as the reference area, and calculating the pixel voltage compensation value of the other area to be adjusted;
and compensating the pixel voltage compensation value into the pixel voltages corresponding to other regions.
2. The method for controlling a lateral type liquid crystal display panel according to claim 1, wherein the step of calculating the pixel voltage compensation value required to be adjusted for the other regions by using one of the regions as a reference region, setting the rising response time of the reference region as a reference response time comprises:
setting the rising response time of the reference area as the reference response time by taking one of the areas as the reference area, and acquiring the corresponding pixel voltage difference as the reference pixel voltage difference;
acquiring pixel voltage differences of other regions as pixel voltage differences to be adjusted;
and calculating the difference value between the reference pixel voltage difference and the pixel voltage difference to be adjusted to obtain the pixel voltage compensation value.
3. The method of controlling a lateral type liquid crystal display panel according to claim 2, further comprising:
obtaining the viscosity coefficient, the vacuum dielectric constant, the dielectric difference, the threshold electric field intensity and the liquid crystal thickness of the liquid crystal;
the reference pixel voltage difference is calculated in the following manner:
wherein, V1For the reference pixel voltage difference, gamma1Viscosity system of the liquid crystal as reference regionNumber, epsilon0Is the vacuum dielectric constant,. DELTA.. epsilon.is the dielectric difference of the liquid crystal, EthIs the threshold electric field strength, d is the liquid crystal thickness, t1Is the reference response time;
the calculation method of the pixel voltage difference to be adjusted is as follows:
wherein, V2For the pixel voltage difference t to be adjusted2The rise response time, gamma, for the pixel to be adjusted2The viscosity coefficient of the liquid crystal is the area to be adjusted;
the pixel voltage compensation value is calculated in the following mode:
ΔV＝V2-V1。
4. the method of claim 3, wherein if the rising response time is less than the reference response time, the pixel voltage is decreased by an absolute value of the pixel voltage compensation value; and if the rising response time is larger than the reference response time, increasing the pixel voltage of the region by the absolute value of the corresponding pixel voltage compensation value.
5. The method for controlling the lateral liquid crystal display panel according to claim 3, further comprising, before the step of dividing the display area of the lateral liquid crystal display panel into a plurality of areas from the near to the far away from the light source:
and debugging the lateral entrance type liquid crystal display panel to ensure that the lateral entrance type liquid crystal display panel has uniform light emission.
6. The method of controlling a lateral type liquid crystal display panel according to claim 5, further comprising:
recording the pixel voltage value corresponding to each area after the lateral type liquid crystal display panel uniformly emits light as an initial driving voltage value;
in the step of compensating the pixel voltage compensation value into the pixel voltages corresponding to the other regions, the initial driving voltage value of each region is added to the pixel voltage compensation value to be used as a debugged driving voltage value, so as to compensate the pixel voltage compensation value into the pixel voltages corresponding to the other regions.
7. The method as claimed in claim 3, wherein when obtaining the liquid crystal viscosity coefficient of each region, obtaining the liquid crystal layer temperature of the region, and then obtaining the liquid crystal viscosity coefficient of the region according to the liquid crystal viscosity coefficient and liquid crystal layer temperature relation table.
8. The method for controlling the lateral liquid crystal display panel according to claim 1, wherein the display area of the lateral liquid crystal display panel is divided into three areas from near to far away from the light source.
9. The method of claim 1 or 8, wherein the middle region is used as a reference region.
10. An edge-type liquid crystal display panel, which comprises an array substrate and a color film substrate, wherein a liquid crystal layer is clamped between the array substrate and the color film substrate, and is characterized in that the edge-type liquid crystal display panel adopts the control method of the edge-type liquid crystal display panel as claimed in any one of claims 1 to 9.
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