CN114373432B - Side-in type liquid crystal display panel and control method thereof - Google Patents
Side-in type liquid crystal display panel and control method thereof Download PDFInfo
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- CN114373432B CN114373432B CN202111655056.7A CN202111655056A CN114373432B CN 114373432 B CN114373432 B CN 114373432B CN 202111655056 A CN202111655056 A CN 202111655056A CN 114373432 B CN114373432 B CN 114373432B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 160
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000000630 rising effect Effects 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims description 18
- 230000005684 electric field Effects 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 10
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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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 side-in type liquid crystal display panel and a control method thereof. The control method of the side-in type liquid crystal display panel comprises the following steps: dividing a display area of the side-entering type liquid crystal display panel into a plurality of areas from the near to the far away from the light source; acquiring the rising response time of each region; setting the rising response time of a reference area as a reference response time by taking one area as the reference area, and calculating pixel voltage compensation values required to be adjusted in other areas; and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas. By the mode, the response time of different areas of the side-entry liquid crystal display panel can be changed, and the whole response time of the side-entry liquid crystal display panel is ensured to be consistent, so that the display effect is improved.
Description
Technical Field
The present application relates to the field of display devices, and in particular, to a side-entry liquid crystal display panel and a control method thereof.
Background
In the case of small and medium-sized display products, for example, a display device, because of its environment limitation, has portability and is required to be thinned, a side-entry light source is mostly used, so that the temperature of the display panel is higher as the display panel is closer to the light bar, the viscosity coefficient (viscosity for short) of the liquid crystal is lower as the temperature is higher, and the rising response time and falling response time of the liquid crystal display device are shown in the following formulas:
wherein, gamma is the viscosity coefficient of the liquid crystal, epsilon 0 The dielectric constant is vacuum, delta epsilon is the dielectric difference of liquid crystal, E is the driving electric field strength, E th For threshold electric field strength, t On To rise response time, t Off For decreasing response time. As described in the formulas 1 and 2, when the temperature of the display area far from the side-entrance light source is lower than the temperature of the display area near to the side-entrance light source, the response time of the display area far from the side-entrance light source is longer, and particularly when the picture is played, the problem of blurred picture trailing due to different rising response time is caused.
Disclosure of Invention
The application mainly solves the technical problem of providing a side-in type liquid crystal display panel and a control method thereof, so as to solve the problem that when a picture is played, the picture is blurred due to different rising corresponding time.
In order to solve the above technical problems, a first technical solution adopted by the present application is to provide a control method of a side-entry liquid crystal display panel, including: dividing a display area of the side-entering type liquid crystal display panel into a plurality of areas from the near to the far away from the light source; acquiring the rising response time of each region; setting the rising response time of a reference area as a reference response time by taking one area as the reference area, and calculating pixel voltage compensation values required to be adjusted in other areas; and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas.
Wherein, with one of the regions as a reference region, setting a rising response time of the reference region as a reference response time, and calculating pixel voltage compensation values to be adjusted in the other regions includes: setting the rising response time of a reference area as reference response time by taking one area as the reference area, and acquiring the corresponding pixel voltage difference as a 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.
Wherein, the control method further comprises: obtaining the viscosity coefficient of liquid crystalVacuum dielectric constant, dielectric difference of liquid crystal, threshold electric field strength, and liquid crystal thickness; the reference pixel voltage difference is calculated by the following steps:wherein V is 1 As reference pixel voltage difference gamma 1 Viscosity coefficient epsilon of liquid crystal as reference region 0 Is vacuum dielectric constant, delta epsilon is dielectric difference of liquid crystal, E th Is the threshold electric field strength, d is the liquid crystal thickness, t 1 Is the reference response time; the pixel voltage difference to be adjusted is calculated by the following steps: />Wherein V is 2 For the pixel voltage difference t to be adjusted 2 For the rising response time, gamma, of the pixel to be adjusted 2 The viscosity coefficient of the liquid crystal is the viscosity coefficient of the liquid crystal in the area to be regulated; the pixel voltage compensation value is calculated by the following steps: Δv=v2-V1.
Wherein, in the area with the rising response time smaller 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, increasing the pixel voltage by the absolute value of the corresponding pixel voltage compensation value.
Before the step of dividing the display area of the side-entry liquid crystal display panel into a plurality of areas from the light source to the far side, the method further comprises: and debugging the side-entering type liquid crystal display panel to make the side-entering type liquid crystal display panel emit light uniformly.
Wherein, the control method further comprises: recording the value of pixel voltage corresponding to each region after the side-entering type liquid crystal display panel emits light uniformly, and taking the value 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 with the pixel voltage compensation value to be used as the driving voltage value after debugging so as 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 area is obtained, the temperature of the liquid crystal layer in the area is obtained, and then the viscosity coefficient of the liquid crystal in the area is obtained through a temperature relation table of the viscosity coefficient of the liquid crystal and the liquid crystal layer.
The display area of the side-entrance liquid crystal display panel is divided into three areas from the light source to the far.
Wherein the middle area is used as a reference area.
In order to solve the technical problems, a second technical scheme adopted by the application is as follows: the side-in type liquid crystal display panel comprises an array substrate and a color film substrate, a liquid crystal layer is arranged between the array substrate and the color film substrate, and the side-in type liquid crystal display panel adopts the control method of any one of the side-in type liquid crystal display panel.
The beneficial effects of the application are as follows: compared with the prior art, the application provides a side-entering type liquid crystal display panel and a control method thereof, wherein the display area of the side-entering type liquid crystal display panel is divided into a plurality of areas from the near to the far according to the mode of the side-entering type liquid crystal display panel from the light source; then, the rising response time of each area is obtained; setting the rising response time of the reference area as the reference response time by taking one area as the reference area, and calculating pixel voltage compensation values 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 voltages of the respective regions are voltage-compensated by calculating pixel voltage compensation values between the respective regions and the reference region. The pixel voltages with different magnitudes are applied to the two ends of the liquid crystal in different temperature areas of the display panel, specifically, according to the position of the side-entering type light source, the lower the viscosity coefficient of the liquid crystal in the area with higher temperature is, the shorter the response time is, the smaller the pixel voltage difference is after pixel voltage compensation is carried out in the area, and the problem that the response time of the area with higher temperature is shorter than that of the area with lower temperature is solved, so that the whole response time of the side-entering type liquid crystal display panel is consistent, and the display effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a flow chart of a control method of a side-entry type LCD panel according to an embodiment of the application;
FIG. 2 is a flow chart of an embodiment of step S13 in FIG. 1;
fig. 3 is a schematic cross-sectional structure of an embodiment of a side-entry liquid crystal display panel according to the present application.
Reference numerals: 100. a side-in type liquid crystal display panel; 101. a color film substrate; 102. an array substrate; 103. a liquid crystal layer; 104. frame glue; 105. side-entry light source.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in 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 "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that the terms "comprises," "comprising," or any other variation thereof, 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 like elements in a process, method, article or apparatus that comprises the element.
The lower the temperature of the display area close to the side-entry light source, the longer the response time of the display area far from the side-entry light source, and particularly, when the picture is played, the picture quality problem of blurring due to tailing of the picture will be presented, and the more the blurring condition is more serious the farther from the side-entry light source.
Based on the problem, the application provides a control method of a side-in type liquid crystal display panel. The following describes a control method of a side-entry liquid crystal display panel according to an embodiment of the present application in detail.
Referring to fig. 1, fig. 1 is a flow chart illustrating an embodiment of a control method of a side-entry liquid crystal display panel according to the present application. The alignment method of the side-in 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 the light source to the far.
Specifically, pixel electrodes arranged in an array are arranged on two longitudinal sides of the side-entry liquid crystal display panel, the pixel electrodes are divided into a plurality of areas along with the mode from the light source from the near to the far, and the areas divided by the pixel electrodes correspond to the plurality of areas divided by the display area one by one. The pixel electrode is used for providing pixel voltage for liquid crystal in a corresponding area divided into a plurality of areas, and the pixel voltage can cause liquid crystal molecules in the area to twist to form an inclination angle so as to control the light source to penetrate and be shielded, thereby displaying pictures such as light and shade of the light source on the panel. The display panel obtained in the embodiment of the application is a side-in type liquid crystal display panel, that is, the display device adopts a side-in type light source, and the side-in type light source can be positioned 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, the pixel electrodes are divided into a plurality of areas along the vertical direction with the extending direction of the side-entering type light source, namely, the display area of the side-entering type liquid crystal display panel is divided into a plurality of areas along the vertical direction with the extending direction of the side-entering type light source.
Further, before the step S11, the method may further include:
and debugging the side-entering type liquid crystal display panel to make the side-entering type liquid crystal display panel emit light uniformly. And the value of the pixel voltage corresponding to each region after the side-entry liquid crystal display panel emits light uniformly is recorded as the initial driving voltage value.
Specifically, the luminance of the display panel is also determined by the pixel voltages at two ends of the display area, and the purpose of adjusting the luminance of the side-entry type liquid crystal display panel to make the display area have the same luminance is to make the pixel voltage difference of different areas obtained by the subsequent test caused by the temperature difference caused by the difference of the distance between the side-entry type light source and the side-entry type light source, so that the difference of the pixel voltage differences caused by the luminance differences of different areas is not calculated within the compensation value. After the pixel voltages of all the areas of the display panel are compensated, the response time of all the areas is the same on the premise that the display panel uniformly emits light and has the same brightness.
Step S12: the rising 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, and is expressed on a display screen, that is, the time required for each pixel to turn from dark to bright or from bright to dark. The side face of the side-in type liquid crystal display panel is provided with a light source, the existence of the light source can generate heat, so that the temperature of the panel is higher at the position closer to the light source, when the temperature of the panel is higher, the viscosity coefficient of liquid crystal is lower, and the response time is positively related to the viscosity coefficient of the liquid crystal, so that different areas are indicated on the panel to have different response times, and the problem of tailing and blurring of pictures is caused. The response time includes a rising response time and a falling response time, the rising response time is a time required for changing a picture from white to black when the pixel voltage is changed from low voltage to high voltage, and the falling response time is a time required for changing the picture from black to white when the pixel voltage is changed from high voltage to low voltage. The temperature affects the rising response time to the same extent as the falling response time, which is related to the intensity of the pixel voltage applied to the pixel electrode. In this embodiment, we acquire the rising response time in the response time, and perform voltage compensation with the rising response time difference of each region.
Further, in the present embodiment, the rising response time of each region is obtained by the test of the response time test machine.
Step S13: and setting the rising response time of the reference area as the reference response time by taking one area as the reference area, and calculating pixel voltage compensation values required to be adjusted in other areas.
In this embodiment, the backlight source is located at the left side of the display panel, and the display area of the display panel is divided into a plurality of areas from left to right in sequence, so that the temperature of the areas from left to right decreases one by one, which is represented by increasing the viscosity coefficient of the liquid crystal in the areas from left to right, resulting in increasing the rising response time of the areas from left to right one by one. The reference area may be any area from left to right, where the pixel voltage compensation value to be adjusted in other areas is determined by the difference between the rising response time of the area to be adjusted and the reference response time, and the larger the difference between the rising response time of the other areas and the reference response time is, the larger the pixel voltage value 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 at the left side of the display panel, and when the temperature of the left-to-right area decreases one by one, the viscosity coefficient of the liquid crystal in the left area of the reference area is greater than that of the reference area, the rising response time of the left area is smaller than that of the reference area, the pixel voltage compensation value of the area needs to be subtracted from the pixel voltage of the area at the left of the reference area, and similarly, the pixel voltage compensation value of the area needs to be added to the pixel voltage of the area at the right of the reference area. After the pixel voltages corresponding to other areas are adjusted, the response time of all areas of the display panel is consistent with the reference response time.
In the above scheme, the pixel voltages applied to the pixel electrodes in different temperature areas on the display panel are applied by controlling the pixel voltage values applied to the two sides of the display panel. In the region of higher temperature, a smaller pixel voltage is applied to the pixel electrode, and in the region of lower temperature, a larger pixel voltage is applied to the pixel electrode. The liquid crystal display panel has higher pixel voltage in the area with lower temperature, so that the problem of longer response time caused by larger viscosity coefficient of liquid crystal in the area with lower temperature is solved, the integral response time consistency of the side-entry liquid crystal display panel is ensured, and the display effect is improved.
Referring to fig. 2, fig. 2 is a flow chart 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 area as the reference area, and acquiring the corresponding pixel voltage difference as the reference pixel voltage difference.
In the present embodiment, the side-entry light source is located on the left side of the display panel, and the display area of the side-entry liquid crystal display panel is divided into three areas from left to right, with the middle area being the reference area. Specifically, the rising response time of the middle area is taken as the reference response time, and the acquisition of the reference response time can be specifically obtained through the test of the response time test machine. In other embodiments, the reference region may be preferably a region close to the backlight, the response time of the region close to the backlight may be smaller, and the reference region may make the overall response time of the side-entry liquid crystal display panel uniform and the overall response time as short as possible.
Further, the step S131 may specifically include: obtaining the viscosity coefficient, vacuum dielectric constant, dielectric difference, threshold electric field strength and liquid crystal thickness of liquid crystal; the calculation formula of the reference pixel voltage difference is as follows:wherein V is 1 As reference pixel voltage difference gamma 1 Viscosity coefficient epsilon of liquid crystal as reference region 0 Is vacuum dielectric constant, delta epsilon is dielectric difference of liquid crystal, E th Is the threshold electric field strength, d is the liquid crystal thickness, t 1 Is 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 when the display panel displays, and can be obtained through measurement by corresponding measuring instruments. The obtaining of the viscosity coefficient of the liquid crystal in the reference area may specifically include: when the viscosity coefficient of the liquid crystal in the reference area is obtained, the temperature of the liquid crystal layer in the reference area is obtained, and then the viscosity coefficient of the liquid crystal in the reference area is obtained through a table of the viscosity coefficient of the liquid crystal and the temperature relationship of the liquid crystal layer. Specifically, the viscosity coefficient of the liquid crystal layer is related to the temperature of the liquid crystal layer. The higher the temperature is, the lower the viscosity coefficient of the liquid crystal is, the liquid crystal viscosity coefficient and the temperature value are in one-to-one correspondence, and in this embodiment, the viscosity coefficient of the liquid crystal in the panel reference region can be obtained through the temperature relation table of the viscosity coefficient of the liquid crystal 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 differences of other areas as the pixel voltage differences to be adjusted.
In the present embodiment, the side-entry light source is located on the left side of the display panel, and the display area of the side-entry 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 two regions on the left and right sides have different temperatures in the regions due to different distances from the reference region to the side-incident light source, the rising response time of the left region is small, the pixel voltage difference is large, the rising response time of the right region is large, and the pixel voltage difference is small.
Further, the step S132 may specifically be:wherein V is 2 For the pixel voltage difference t to be adjusted 2 For the rising response time epsilon of the pixel to be adjusted 0 Is vacuum dielectric constant, delta epsilon is dielectric difference of liquid crystal, E th The electric field strength is threshold, d is the thickness of liquid crystal and gamma 2 Is the viscosity coefficient of the liquid crystal in the area to be regulated. The vacuum dielectric constant, the dielectric difference of the liquid crystal, the threshold electric field intensity 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 testing of a response time testing machine. The obtaining of the viscosity coefficient of the liquid crystal in the area to be adjusted specifically may include: when the viscosity coefficient of the liquid crystal in the area to be regulated is obtained, the temperature of the liquid crystal layer in the area to be regulated is obtained, and then the viscosity coefficient of the liquid crystal in the area to be regulated is obtained through a temperature relation table of the viscosity coefficient of the liquid crystal and the liquid crystal layer. Specifically, the viscosity coefficient of the liquid crystal layer is related to the temperature of the liquid crystal layer. The higher the temperature is, the lower the viscosity coefficient of the liquid crystal is, the liquid crystal viscosity coefficient and the temperature value are in one-to-one correspondence, and in this embodiment, the viscosity coefficient of the liquid crystal in the panel reference region can be obtained through the temperature relation table of the viscosity coefficient of the liquid crystal 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 by the following steps: Δv=v2-V1. Specifically, Δv is a compensation value of a pixel voltage to be adjusted, V2 is a pixel voltage difference of a region to be adjusted, V1 is a voltage difference of a reference pixel, in this embodiment, a side-entry light source is located at a left side of a display panel, a display region of the side-entry liquid crystal display panel is divided into three regions from left to right, a middle region is taken as a reference region, two regions at left and right sides of the middle region are regions of the pixel voltage difference to be adjusted, a voltage compensation value thereof is calculated as a negative value in a region at left side of the reference region, and a voltage compensation value thereof is calculated as a positive value in a region at right side of the reference region.
Further, after step S133, the method specifically may further include: and compensating the pixel voltage compensation value into the pixel voltage corresponding to other areas, and adding the initial driving voltage value of each area and the pixel voltage compensation value to be used as the driving voltage value after debugging so as to compensate the pixel voltage compensation value into the pixel voltage corresponding to other areas. The rising response time is smaller than the area of 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, increasing the pixel voltage by the absolute value of the corresponding pixel voltage compensation value. In the present embodiment, if the rising response time is smaller than the reference response time in the region located on the left side of the reference region, the pixel voltage needs to be reduced by the absolute value of the corresponding pixel voltage compensation value. The area located on the right side of the reference area has a rising response time greater than the reference response time, and the pixel voltage thereof needs to be raised by the absolute value of the corresponding pixel voltage compensation value. In another embodiment, the rising response time is smaller than the reference response time in a region closer to the side-entry light source than the reference region, and the pixel voltage is required to be reduced by the absolute value of the pixel voltage compensation value corresponding to the rising response time.
In this way, the pixel voltages of the respective regions are voltage-compensated by calculating the pixel voltage compensation values between the respective regions and the reference region. The pixel voltages with different magnitudes are applied to the two ends of the liquid crystal in different temperature areas of the display panel, specifically, according to the position of the side-entering type light source, the lower the viscosity coefficient of the liquid crystal in the area with higher temperature is, the shorter the response time is, the pixel voltage compensation is carried out in the area, the smaller the pixel voltage difference is, 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 side-entering type liquid crystal display panel is ensured, and therefore the display effect is improved.
The application also provides a side-entry type liquid crystal display panel, and a control method of the side-entry type liquid crystal display panel is adopted. Referring to fig. 3, fig. 3 is a schematic cross-sectional structure of an embodiment of a side-entry lcd panel according to the present application. In the present embodiment, the side-in type liquid crystal display panel 100 includes an array substrate 102 and a color film substrate 101. A liquid crystal layer 103 is sandwiched between the array substrate 102 and the color film substrate 101.
The panel of the present embodiment has a side-in light source 105 on the left side, and a sealant 104 for sealing liquid crystal is further provided between the array substrate 102 and the color film substrate 101.
Further, a common electrode (not labeled) is further disposed on a surface of the color film substrate 101 facing the liquid crystal layer 103, and pixel electrodes (not labeled) are disposed on a surface of the array substrate 102 facing the liquid crystal layer 103 in an array arrangement. The pixel electrode is divided into a plurality of regions along a direction perpendicular to an extending direction of the side-entrance light source 105, and a control module (not shown) is provided in a non-display region of the side-entrance liquid crystal display panel 100 to connect the pixel electrodes of the respective regions, and a voltage difference between the pixel electrode and the common electrode of each region is controlled by the control module. The smaller the pixel voltage difference in the region closer to the side-entrance light source 105 is controlled, the larger the pixel voltage difference in the region farther from the side-entrance light source 105 is controlled. Specifically, the value of the pixel voltage corresponding to each region after the light emission of the side entry type liquid crystal display panel 100 is uniform is recorded as the initial driving voltage value. In the present embodiment, the side-entry liquid crystal display panel 100 is divided into three regions from left to right, with the middle region being the reference region. And the response time test machine is used for testing the rising response time of the middle area and is used as the reference response time, and the response time test machine is used for acquiring the rising response time of other areas. The liquid crystal viscosity coefficients of the respective regions of the side-entry liquid crystal display panel 100 are 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 the existing formulas, the difference value between the pixel voltage difference of other areas to be adjusted and the pixel voltage difference of the reference area is used as a pixel voltage compensation value, the voltage difference between the pixel electrode of each area and the common electrode 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 differences of different display areas of the side-entry liquid crystal display panel 100 is realized.
By the above method, 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 magnitudes are applied to the two ends of the liquid crystal in different temperature areas of the side-entering type liquid crystal display panel, specifically, according to the position of the side-entering type light source, the lower the viscosity coefficient of the liquid crystal in the area with higher temperature is, the shorter the response time is, the pixel voltage compensation is carried out in the area, the smaller the pixel voltage difference is, the problem that the response time of the area with higher temperature is shorter than that of the area with lower temperature is further solved, the consistency of the overall response time of the side-entering type liquid crystal display panel is ensured, and therefore the display effect is improved.
The foregoing description is only of embodiments of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent principle changes made by the specification and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (7)
1. The control method of the side-entry type liquid crystal display panel is characterized by comprising the following steps of:
debugging the side-entering type liquid crystal display panel to enable the side-entering type liquid crystal display panel to emit light uniformly;
dividing a display area of the side-entrance type liquid crystal display panel into a plurality of areas from the light source to the far according to the mode of the side-entrance type liquid crystal display panel from the near to the far;
acquiring the rising response time of each region;
setting the rising response time of the reference area as the reference response time by taking the middle area 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; calculating the difference value of the reference pixel voltage difference and the pixel voltage difference to be adjusted to obtain the pixel voltage compensation value;
the light source is positioned at the left side of the display panel, the area at the left side of the reference area is provided with a negative voltage compensation value, the area at the right side of the reference area is provided with a positive voltage compensation value;
and compensating the pixel voltage compensation value into the pixel voltages corresponding to other areas.
2. The control method of a side-entry liquid crystal display panel according to claim 1, characterized in that the control method further comprises:
obtaining the viscosity coefficient, vacuum dielectric constant, dielectric difference, threshold electric field strength and liquid crystal thickness of liquid crystal;
the reference pixel voltage difference is calculated by the following steps:
wherein V is 1 For the reference pixel voltage difference gamma 1 Viscosity coefficient epsilon of the liquid crystal as reference region 0 The vacuum dielectric constant, delta epsilon, and E are the dielectric difference of the liquid crystal th For the threshold electric field strength, d is the liquid crystal thickness, t 1 For the baseline response time;
the pixel voltage difference to be adjusted is calculated in the following manner:
wherein V is 2 For the pixel voltage difference t to be adjusted 2 For the rising response time, gamma, of the pixel to be adjusted 2 The viscosity coefficient of the liquid crystal is the viscosity coefficient of the liquid crystal in the area to be regulated;
the pixel voltage compensation value is calculated in the following manner:
ΔV＝V 2 -V 1 。
3. the control method of a side-entry liquid crystal display panel according to claim 2, wherein the rising response time is smaller than the area of the reference response time, and the pixel voltage thereof is lowered by the absolute value of the corresponding pixel voltage compensation value; and if the rising response time is greater than the area of the reference response time, the pixel voltage is increased by the absolute value of the corresponding pixel voltage compensation value.
4. The control method of a side-entry liquid crystal display panel according to claim 2, characterized in that the control method further comprises:
recording the value of the pixel voltage corresponding to each region after the side-entering type liquid crystal display panel emits light uniformly, and taking the value as an initial driving voltage value;
in the step of compensating the pixel voltage compensation value into the pixel voltages corresponding to other regions, adding the initial driving voltage value of each region and the pixel voltage compensation value to serve as the driving voltage value after debugging so as to compensate the pixel voltage compensation value into the pixel voltages corresponding to other regions.
5. The method according to claim 2, wherein 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 from a temperature relationship table of the viscosity coefficient of the liquid crystal and the liquid crystal layer.
6. The method according to claim 1, wherein the display area of the side-entry liquid crystal display panel is divided into three areas from the light source.
7. A side-entry liquid crystal display panel, the side-entry liquid crystal display panel comprising an array substrate and a color film substrate, a liquid crystal layer being interposed between the array substrate and the color film substrate, characterized in that the side-entry liquid crystal display panel adopts the control method of the side-entry liquid crystal display panel according to any one of claims 1 to 6.
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