Liquid crystal display panel, driving compensation method and display device

Abstract

The application discloses a liquid crystal display panel, a driving compensation method and a display device, and relates to the technical field of liquid crystal display. The liquid crystal display panel comprises a color filter substrate, a thin film transistor substrate and liquid crystal between the color filter substrate and the thin film transistor substrate. The color filter substrate comprises a glass substrate, a planar layer and three primary color filters arranged between the glass substrate and the planar layer. The three primary color filters are distributed in a middle area of the color filter substrate and an edge area surrounding the middle area. The three primary color filters comprise a red color filter, a green color filter and a blue color filter. The first color filter thickness of each green color filter in the edge area is smaller than the second color filter thickness of each green color filter in the middle area. The application does not rely on material replacement or circuit power consumption increase, does not need to additionally occupy the frame space, and only needs to differentiate the physical design of the green color filter thickness on the color filter substrate, so that the redness of the panel edge in the narrow frame product can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of liquid crystal display technology, and in particular to a liquid crystal display panel, a driving compensation method, and a display device. Background Technology

[0002] When wide color gamut, high transmittance, and low power consumption TFT-LCD (Thin Film Transistor-Liquid Crystal Display) products are operated in high temperature and high humidity environments, their liquid crystal display panel edge areas are prone to color deviation phenomena such as pinking and redding, which seriously affect the visual effect of the display.

[0003] Existing research has conducted systematic comparative experiments on micro-liquid crystal cells and TFT-LCD samples made of green color resist, active layer and planarization layer materials with different compositions. The results have clarified that the root cause of this defect is that when the green pigment in the green color resist is exposed to a combined environment of high temperature, high humidity and light, its chemical molecular structure changes. This leads to a decrease in the transmittance of the green color resist in the green light band, a decrease in the relative proportion of green light, and a corresponding increase in the relative proportion of red and blue light. This results in a visually pinkish or reddish color shift at the edge of the panel.

[0004] To address the aforementioned issue of edge reddening in high temperature and humidity, existing solutions primarily focus on improvements such as material substitution, structural sealing, or circuit compensation. Examples include replacing materials with highly hydrophobic ones, increasing frame sealant sealing, and pure circuit compensation. However, these solutions all have varying degrees of drawbacks in practical applications: material substitution solutions are limited by fixed material systems, and their effectiveness gradually diminishes over time, failing to achieve stable improvements throughout the product's lifecycle; increasing frame sealant sealing is space-constrained in the trend towards narrow bezel designs and cannot fundamentally address the failure mechanism of color resist degradation; while pure circuit compensation solutions can dynamically adjust brightness output, they lead to a continuous increase in power consumption, and the significant difference in driving voltage between edge and center pixels easily causes reliability issues such as crosstalk and image retention. Summary of the Invention

[0005] The main objective of this application is to provide a liquid crystal display panel, a driving compensation method, and a display device, which aims to solve the technical problem that it is currently difficult to effectively improve the reddish tint at the edge of the panel throughout its entire life cycle without significantly increasing power consumption and narrow bezel compatibility.

[0006] To achieve the above objectives, this application proposes a liquid crystal display panel, which includes a color filter substrate, a thin film transistor substrate, and liquid crystal located between the color filter substrate and the thin film transistor substrate. The color filter substrate includes a glass substrate, a planarization layer, and three primary color color resists disposed between the glass substrate and the planarization layer. The three primary color color resists are distributed in a central region of the color filter substrate and an edge region surrounding the central region. The three primary color color resists include a red color resist, a green color resist, and a blue color resist. The thickness of the first color resist in each green color resist in the edge region is less than the thickness of the second color resist in each green color resist in the middle region.

[0007] In one embodiment, the thickness of the green color resist in any of the edge regions is determined based on the first molar absorptivity and first pigment concentration of the green color resist in the edge regions, and the second molar absorptivity, second pigment concentration, and second color resist thickness of the green color resist in the central regions.

[0008] In one embodiment, the first chromaticity thickness of each green color resist in the edge region is positively correlated with the distance of each green color resist in the edge region from the edge of the color filter substrate.

[0009] Furthermore, to achieve the above objectives, this application also proposes a driving compensation method, which is applied to the driving circuit in the liquid crystal display panel described above, and the driving compensation method includes: Monitor the aging time of the liquid crystal display panel; Based on the aging time, the compensation driving voltage of each green color resist corresponding to the first green sub-pixel unit in the edge area of ​​the liquid crystal display panel is determined. Each of the aforementioned compensation driving voltages is output to each of the first green sub-pixel units.

[0010] In one embodiment, the step of determining the compensation driving voltage of each green color resist corresponding to the first green sub-pixel unit in the edge region of the liquid crystal display panel based on the aging time includes: Obtain the time-voltage mapping relationship of each of the first green sub-pixel units; According to the aforementioned duration-voltage mapping relationship, the aging duration is mapped to the compensation driving voltage of the corresponding first green sub-pixel unit.

[0011] In one embodiment, the compensation driving voltage includes a first driving voltage, and the step of mapping the aging duration to the compensation driving voltage corresponding to the first green sub-pixel unit according to the respective duration voltage mapping relationships includes: If the aging time is less than the first time threshold in each of the time-voltage mapping relationships, the aging time is mapped to the first driving voltage of the corresponding first green sub-pixel unit according to each of the time-voltage mapping relationships. Wherein, the voltage value of the first driving voltage is less than the driving voltage value of the second green sub-pixel unit corresponding to any green color resist in the central region of the liquid crystal display panel.

[0012] In one embodiment, the compensation driving voltage further includes a second driving voltage, and the step of mapping the aging duration to the compensation driving voltage corresponding to the first green sub-pixel unit according to the respective duration voltage mapping relationships includes: If the aging time is greater than or equal to the first time threshold in each of the time-voltage mapping relationships, and less than the second time threshold in the corresponding time-voltage mapping relationship, the aging time is mapped to the second driving voltage of the corresponding first green sub-pixel unit according to each of the time-voltage mapping relationships. Wherein, the second duration threshold is greater than the first duration threshold, and the voltage value of the second driving voltage is equal to the driving voltage value of any second green sub-pixel unit.

[0013] In one embodiment, the compensation driving voltage further includes a third driving voltage, and the step of mapping the aging duration to the compensation driving voltage corresponding to the first green sub-pixel unit according to the respective duration voltage mapping relationships includes: When the aging time is greater than or equal to the second time threshold in each of the time-voltage mapping relationships, the aging time is mapped to the third driving voltage corresponding to the first green sub-pixel unit according to each of the time-voltage mapping relationships. The voltage value of the third driving voltage is greater than the driving voltage value of any of the second green sub-pixel units.

[0014] In one embodiment, the drive compensation method further includes: The transmittance of each green color resist in the edge area of ​​the monitoring sample display panel under different aging times was measured. The first optical density coefficient of each green color resist in the edge area of ​​the sample display panel is determined based on the ratio of the transmittance of each color resist to the third color resist thickness of each green color resist in the edge area of ​​the sample display panel. Obtain the second optical density coefficient and the fourth color resist thickness corresponding to any green color resist in the central area of ​​the sample display panel; For any green sub-pixel unit in the edge region of the sample display panel, a mapping relationship between the aging time and the compensation driving voltage of the green sub-pixel unit is constructed based on the product of the first optical density coefficient and the transmittance of the green color resist corresponding to the green sub-pixel unit, the product of the second optical density coefficient and the thickness of the fourth color resist, and the green sub-pixel driving voltage in the middle region of the sample display panel, so as to obtain the time-voltage mapping relationship corresponding to the first green sub-pixel unit.

[0015] In addition, to achieve the above objectives, this application also proposes a display device, the display device comprising a liquid crystal display panel as described above: and / or, a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the drive compensation method as described above.

[0016] One or more technical solutions proposed in this application have at least the following technical effects: This application sets the thickness of the first green color resist in the edge region of the color filter substrate to be less than the thickness of the second green color resist in the middle region. By utilizing the physical relationship between light transmittance and color resist thickness, i.e. according to the Lambert-Beer law, the thinner the color resist, the higher its initial light transmittance, the green color resist in the edge region has a higher initial green light transmittance than the green color resist in the middle region when it is shipped. This provides a compensation margin in advance for the decrease in transmittance of the green color resist in the edge region due to changes in the chemical molecular structure of the green pigment under high temperature and high humidity conditions.

[0017] Based on this, when the LCD panel operates in a high-temperature and high-humidity environment, even if the green light transmittance of the green color resist in the edge area decreases due to degradation, the initial transmittance advantage brought about by the thinner thickness of the first color resist compared to the second color resist in the central area allows the actual green light transmittance of the edge area after degradation to approach the level of the central area. This ensures that the relative proportion of green light in the edge area and the central area remains consistent, preventing the relative proportion of red and blue light from increasing due to the decrease in the proportion of green light. Ultimately, this fundamentally suppresses the color shift phenomenon of pinking and reddening in the edge area of ​​the display panel at the color resist structure level. Thus, without relying on material replacement or increased circuit power consumption, and without needing to occupy additional bezel space, the reddening problem at the panel edge can be effectively improved in narrow-bezel products simply through the differentiated physical design of the green color resist thickness on the color filter substrate. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the liquid crystal display panel according to an embodiment of this application; Figure 2 This is a schematic diagram of the color resist thickness of the liquid crystal display panel according to an embodiment of this application; Figure 3 This is a flowchart illustrating the compensation method according to an embodiment of this application; Figure 4 This is a simplified flowchart illustrating the compensation method used in an embodiment of this application. Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the drive compensation method in the embodiments of this application.

[0021] Explanation of icon numbers:

[0022] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0024] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0025] The main solution of this application embodiment is: to propose a liquid crystal display panel, including: a color filter substrate, a thin film transistor substrate, and liquid crystal located between the color filter substrate and the thin film transistor substrate. The color filter substrate includes a glass substrate, a planarization layer, and three primary color resists disposed between the glass substrate and the planarization layer. The three primary color resists are distributed in the central region and the edge region surrounding the central region of the color filter substrate. The three primary color resists include red resist, green resist, and blue resist. The first resist thickness of each green resist in the edge region is less than the second resist thickness of each green resist in the central region.

[0026] According to the Lambert-Beer law, the transmittance of light through color filter... Physical thickness of color resist The previous relationship followed the following pattern:

[0027] in, It is the molar absorptivity of the pigment corresponding to the color resist. This refers to pigment concentration. This relationship can be summarized into a constant, representing the optical density coefficient per unit thickness of the color resist. ,Right now:

[0028] Under high temperature and humidity, the degradation of green color resist in green sub-pixel units can be physically understood as a chemical change or molecular configuration transformation of the green pigment in the green color resist, leading to an enhanced ability to absorb green light, manifested in the optical density coefficient. The thickness of the green color resist in the central area of ​​the liquid crystal display panel increases. The initial optical density coefficient of the green color filter is The transmittance of the green color resist in the central area of ​​the liquid crystal display panel under undegraded conditions is: =

[0029] Under high temperature and high humidity conditions, the edges of the panel deteriorate due to moisture intrusion, resulting in an increase in the optical density coefficient. Each green color resist uses a uniform thickness At that time, the transmittance of green color filter in the edge region after edge degradation is:

[0030] because > ,so > ,Right now < The output ratio of green pixels at the edge is lower than that at the center, and the red and blue light are relatively enhanced, so the human eye perceives the edges as red.

[0031] To address the issue of edge reddening in high-temperature and high-humidity environments, existing solutions primarily focus on improvements such as material substitution, structural sealing, or circuit compensation. Examples include replacing materials with highly hydrophobic ones, increasing frame sealant sealing, and pure circuit compensation. However, these solutions all have varying degrees of drawbacks in practical applications: material substitution solutions are limited by fixed material systems, and their effectiveness gradually diminishes over time, failing to achieve stable improvements throughout the product's lifecycle; increasing frame sealant sealing is space-constrained in the trend towards narrow bezel designs and cannot fundamentally address the failure mechanism of color resist degradation; while pure circuit compensation solutions can dynamically adjust brightness output, they lead to a continuous increase in power consumption, and the significant difference in driving voltage between edge and center pixels easily causes reliability issues such as crosstalk and image retention.

[0032] This application provides a solution whereby, when a liquid crystal display panel operates in a high-temperature and high-humidity environment, even if the green light transmittance of the green color resist in the edge region decreases due to degradation, the initial transmittance advantage resulting from the thinner thickness of the first color resist compared to the second color resist in the central region allows the actual green light transmittance of the edge region after degradation to approach the level of the central region. This ensures that the relative proportion of green light in the edge and central regions remains consistent, preventing an increase in the relative proportion of red and blue light due to a decrease in the green light proportion. Ultimately, this fundamentally suppresses the color shift phenomenon of pinking and reddening in the edge region of the display panel at the color resist structure level. Therefore, without relying on material replacement or increased circuit power consumption, and without requiring additional bezel space, effective improvement of reddening defects at the panel edges can be achieved in narrow-bezel products simply through the differentiated physical design of the green color resist thickness on the color filter substrate.

[0033] Based on this, the present application provides a liquid crystal display panel, referring to... Figure 1 The system includes: a color filter substrate 10, a thin film transistor substrate 20, and a liquid crystal 30 located between the color filter substrate 10 and the thin film transistor substrate 20. The color filter substrate 10 includes a glass substrate 11, a planarization layer 12, and three primary color color resists disposed between the glass substrate 11 and the planarization layer 12. The three primary color color resists are distributed in the central region of the color filter substrate 10 and the edge region surrounding the central region. The three primary color color resists include a red color resist 131, a green color resist 132, and a blue color resist 133. The thickness of the first color resist 132 in the edge region is less than the thickness of the second color resist 132 in the middle region.

[0034] also, Figure 1 The color filter substrate 10 shown also includes a black matrix 14, and the thin film transistor substrate 20 also includes a pixel electrode / common electrode 21.

[0035] It should be noted that the edge region is the peripheral display area surrounding the central region on the color filter substrate 10, which is physically adjacent to the bezel of the liquid crystal display panel 30. Since moisture in high-temperature and high-humidity environments primarily penetrates through the gaps in the panel bezel, the edge region is the area most severely affected by moisture erosion. It is also the area where the chemical molecular structure of the green pigment in the green color resist 132 undergoes the most significant changes, leading to a reduction in the transmittance of the green light band. Therefore, the powdery and reddish defects at the edges of the liquid crystal display panel 30 are concentrated in this area.

[0036] The first color resist thickness refers to the actual physical thickness of each green color resist 132 in the upper edge region of the color filter substrate 10. This thickness is a differentiated design value relative to the second color resist thickness of the green color resist 132 in the central region. The key difference is that the first color resist thickness is smaller than the second color resist thickness. According to the Lambert-Beer law, the thinner the color resist, the higher the transmittance of light passing through it. Therefore, the specific value of the first color resist thickness directly affects the initial green light transmittance of the green color resist 132 in the edge region and is a key physical parameter that determines whether sufficient compensation margin can be reserved for the decrease in transmittance after degradation.

[0037] The central region is the central display area on the color filter substrate 10, surrounded by the edge region. Because this region is far from the panel bezel, it is less affected by moisture intrusion in a high-temperature and high-humidity environment. The green pigment in the green color resist 132 is less prone to significant changes in its chemical molecular structure, and the transmittance in the green light band remains relatively stable, preventing visually appearing pinkish or reddish color shifts. In this embodiment, the central region serves as a reference area for color performance, and the second color resist thickness of the green color resist 132 within it represents the normal thickness value under conventional design.

[0038] The second color resist thickness refers to the actual physical thickness of each green color resist 132 in the central region of the color filter substrate 10. This thickness represents the standard thickness value of the green color resist 132 in the panel under conventional design, serving as a reference for the first color resist thickness of the green color resist 132 in the edge region. The first color resist thickness is designed to be smaller than the second color resist thickness. The difference between the two thicknesses determines the additional green light transmittance increment obtained by the green color resist 132 in the edge region compared to the central region in the initial state. This increment needs to be precisely designed to match the transmittance loss of the green color resist 132 in the edge region due to the increased light density after high temperature and humidity degradation, so that the actual green light output of the edge region after degradation remains close to that of the central region.

[0039] In addition, it should be noted that the thickness of the second color resist of each green color resist 132 in the central area can be the same.

[0040] For reference Figure 2 , Figure 2 In the middle, d0 is the first color resist thickness of each green color resist 132 in the edge area after thinning, and d1 is the color resist thickness of each red color resist in the edge area. Since this color resist thickness has not been thinned, that is, the default initial thickness, it can also be regarded as the second color resist thickness of each green color resist 132 in the middle area for easy display.

[0041] It is understandable that when wide color gamut, high transmittance, and low power consumption TFT-LCD products operate in high temperature and high humidity environments, moisture intrusion in the edge areas causes changes in the chemical molecular structure of the green pigment in the green color resist 132, reducing the transmittance of the green light band, decreasing the relative proportion of green light, and increasing the relative proportion of red and blue light. This results in visually poor color shift, such as pinking or reddening at the panel edges. Existing material replacement solutions are limited by the fixed material system, which cannot achieve stable improvement throughout the entire life cycle, and the improvement effect weakens over time. Increasing the sealing of the frame adhesive is limited by space under the trend of narrow bezels and cannot intervene in the degradation mechanism of the color resist itself. Pure circuit compensation solutions lead to increased power consumption and are prone to reliability issues such as crosstalk and image retention.

[0042] Therefore, this embodiment sets the first color resist thickness of each green color resist 132 in the upper edge region of the color filter substrate 10 to be less than the second color resist thickness of each green color resist 132 in the middle region. By utilizing the negative correlation between color resist thickness and light transmittance, the green color resist 132 in the edge region has a higher green light transmittance than the middle region in the initial state. This provides a compensation margin for the transmittance decrease caused by the degradation of the green color resist 132 under high temperature and high humidity conditions. Ultimately, the actual green light transmittance of the edge region after degradation can approach the green light transmittance level of the middle region. This avoids the relative increase in the relative proportion of red and blue light caused by the relative decrease in the relative proportion of green light. Thus, without relying on material replacement, increasing power consumption, or occupying additional bezel space, the color shift phenomenon of pinking and reddening at the edge of the display panel is fundamentally suppressed.

[0043] For example, in the liquid crystal display panel 30, the color filter substrate 10 includes a glass substrate 11, a planarization layer 12, and three primary color color resists disposed between the glass substrate 11 and the planarization layer 12. The three primary color color resists are distributed in the central region and the edge region surrounding the central region of the color filter substrate 10. The three primary color color resists include a red color resist 131, a green color resist 132, and a blue color resist 133. When fabricating the color filter substrate 10, the color resists in the central region and the edge region are formed by photolithography. The first color resist thickness of each green color resist 132 in the edge region is less than the second color resist thickness of each green color resist 132 in the central region. In specific manufacturing, a halftone or grayscale mask can be used to expose the green color resist 132 in the edge area, making the development thickness of the green color resist 132 in the edge area lower than that in the middle area, thus achieving a first color resist thickness that is less than the second color resist thickness. The second color resist thickness of the green color resist 132 in the middle area can use a conventional design value, while the first color resist thickness of the green color resist 132 in the edge area is reduced accordingly based on the required transmittance compensation margin. Therefore, only the thickness of the green color resist 132 on the color filter substrate 10 is differentiated, without affecting the thickness of the red color resist 131 and the blue color resist 133, nor changing the other film layer structure of the panel.

[0044] In this embodiment, when the liquid crystal display panel 30 operates in a high-temperature and high-humidity environment, even if the green light transmittance of the green color resist 132 in the edge region decreases due to degradation, the initial transmittance advantage brought about by the thinner thickness of the first color resist compared to the second color resist in the central region allows the actual green light transmittance of the edge region after degradation to approach the green light transmittance level of the central region. This ensures that the relative proportion of green light in the edge region and the central region remains consistent, avoiding the increase in the relative proportion of red and blue light due to the decrease in the proportion of green light. Ultimately, this fundamentally suppresses the color shift phenomenon of pinking and reddening in the edge region of the display panel from the perspective of the color resist structure. Thus, without relying on material replacement or increased circuit power consumption, and without needing to occupy additional bezel space, the differential physical design of the thickness of the green color resist 132 on the color filter substrate 10 can effectively improve the reddening problem at the panel edge in narrow bezel products.

[0045] In one feasible implementation, the color resist thickness of the green color resist 132 in any edge region is determined based on the first molar absorptivity and first pigment concentration of the green color resist 132 in the edge region, and the second molar absorptivity, second pigment concentration and second color resist thickness of the green color resist 132 in the middle region.

[0046] It should be noted that the first molar absorptivity is a physical quantity that refers to the ability of the green pigment contained in the green color resist 132 in the edge region to absorb incident light in the green band. Its value depends on the chemical molecular structure characteristics of the green pigment in the green color resist 132 in the edge region and does not change with the thickness of the color resist or the concentration of the pigment. In the Lambert-Beer law, this coefficient is exponentially related to the transmittance of light after passing through the color resist. The larger the first molar absorptivity, the stronger the absorption ability of the green color resist 132 in the edge region for green band light per unit optical path length, and the lower the green light transmittance.

[0047] The first pigment concentration refers to the density of green pigment distribution in a unit volume of green color resist 132 in the edge region. Its value determines the number of pigment molecules participating in the absorption of green wavelength light in a unit thickness of color resist. This concentration is a fixed process parameter determined by adjusting the doping ratio of green pigment in the green color resist 132 paste during the fabrication of the color filter substrate 10. In the Lambert-Beer law, the product of the first pigment concentration and the first molar absorption coefficient constitutes the first optical density coefficient of the green color resist 132 in the edge region, which directly determines the transmittance of green light when passing through the green color resist 132 in the edge region.

[0048] The second molar absorptivity is a physical quantity that refers to the absorption capacity of the green pigment contained in the green color resist 132 in the central region for incident light in the green band. Its value depends on the chemical molecular structure characteristics of the green pigment in the green color resist 132 in the central region. Since the green pigment in the green color resist 132 in the central region is the same as that in the green color resist 132 in the edge region, the second molar absorptivity is equal to the first molar absorptivity in the initial state before deterioration. However, after operation in a high temperature and high humidity environment, the green pigment in the edge region deteriorates due to water vapor intrusion, which leads to an increase in the first molar absorptivity. Meanwhile, the green pigment in the central region is not affected by water vapor, so the second molar absorptivity remains unchanged at its initial value.

[0049] The second pigment concentration refers to the density of green pigment distribution per unit volume in the green color resist 132 in the central region. Its value depends on the doping ratio of green pigment in the color resist slurry during the production of the green color resist 132 in the central region. Since the central region and the edge region are produced using the same green color resist 132 slurry, the second pigment concentration is the same as the first pigment concentration in the initial state. This concentration, together with the second molar absorption coefficient, constitutes the second optical density coefficient of the green color resist 132 in the central region. It is used as a standard reference value for green light transmittance when the liquid crystal 30 display panel leaves the factory and throughout its entire life cycle, in order to measure the degree to which the edge region deviates from the normal state due to degradation.

[0050] It is understandable that if the thickness of the first color resist is simply set to be less than that of the second color resist without a quantitative design basis, it is impossible to guarantee that each LCD 30 display panel with different material systems and different process conditions can achieve an effective match between the green light transmittance of the edge area and the central area after the edge area deteriorates. It is possible that the thickness of the first color resist is insufficient, resulting in the green light transmittance after deterioration still being lower than that of the central area, and the reddish problem is not completely eliminated. Alternatively, the thickness of the first color resist may be excessive, resulting in the green light transmittance of the edge area being too high under factory conditions, thus exhibiting a greenish tint.

[0051] Therefore, this embodiment determines the first color resist thickness of each green color resist 132 in the edge region based on the first molar absorptivity and first pigment concentration of the green color resist 132 in the edge region, and the second molar absorptivity, second pigment concentration, and second color resist thickness of the green color resist 132 in the central region. Utilizing the quantitative relationship between the color resist optical density coefficient and transmittance revealed by the Lambert-Beer Law, the product of the first molar absorptivity and the first pigment concentration, and the product of the second molar absorptivity and the second pigment concentration, respectively characterize the optical density capability per unit thickness of the green color resist 132 in the edge and central regions. This allows the value of the first color resist thickness to be accurately calculated based on actual material parameters, avoiding the problem of insufficient compensation accuracy or overcompensation caused by relying solely on empirical values ​​for the first color resist thickness. This achieves a precise match between the green light transmittance of each green color resist 132 in the edge region after degradation and the green light transmittance of the green color resist 132 in the central region.

[0052] For example, when determining the first color resist thickness of each green color resist 132 in the edge region, the second color resist thickness of the green color resist 132 in the central region is first obtained. And obtain the second molar absorptivity of the green color resist 132 in the central region. Second pigment concentration And the first molar absorptivity of the green color resist 132 in the edge region and the first pigment concentration The second molar absorptivity With the first molar absorptivity The values ​​are the same in the initial state where the green color resist 132 has not deteriorated; the second pigment concentration... With the first pigment concentration The values ​​were also the same when using the same green color resist 132 paste; then the second molar absorbance coefficient was... With the second pigment concentration product As the second optical density coefficient of the green color resist 132 in the central region and the first molar absorptivity With the first pigment concentration product The first optical density coefficient of the green color resist 132 in the edge region According to the Lambert-Beer Law ( Transmittance With optical density coefficient Color resist thickness The exponential relationship between the products, under the target condition that the green light transmittance of the green color resist 132 in the edge region after degradation is equal to the green light transmittance of the green color resist 132 in the middle region, is used to transform the thickness of the first color resist through equation transformation. Calculated as the second optical density coefficient With the thickness of the second color resist product Divide by the first optical density coefficient The obtained value, that is Finally, each green color resist 132 in the edge area is made according to the calculated value, so that the actual physical thickness of each green color resist 132 is equal to the calculated value, thereby achieving precise quantitative design of the thickness of the first color resist.

[0053] In one feasible implementation, the first chromaticity thickness of each green color resist 132 in the edge region is positively correlated with the distance of each green color resist 132 in the edge region from the edge of the color filter substrate 10.

[0054] It should be noted that the distance value refers to the straight-line distance from the location of each green color resist 132 in the edge region to the physical edge of the color filter substrate 10, which is the actual boundary of the LCD 30 display panel after cutting. Because moisture in the high-temperature and high-humidity environment penetrates through the gaps in the panel frame, a concentration gradient is formed on the plane of the color filter substrate 10 from the edge to the center. Therefore, the degree of moisture erosion suffered by the green color resists 132 at different locations in the edge region varies. Specifically, the closer the green color resist 132 is to the edge of the color filter substrate 10, the more severe the degradation of its green pigment and the greater the decrease in green light transmittance. Conversely, the closer the green color resist 132 is to the center region, the less severe its degradation.

[0055] This distance value is a quantitative parameter used to characterize the distance between the position of each green color resist 132 in the edge region and the edge of the substrate, and determines the size of the transmittance compensation margin required for the green color resist 132. Since the degradation is more severe closer to the edge, the required compensation margin is larger, and the corresponding first color resist thickness of the green color resist 132 should be thinner. Therefore, there is a positive correlation between the first color resist thickness and this distance value, that is, the smaller the distance value, the smaller the first color resist thickness, and the larger the distance value, the larger the first color resist thickness, but it is always less than the second color resist thickness in the central region, thereby achieving precise differential compensation for different degradation levels in the edge region.

[0056] It is understandable that, since the edge area is not a uniform degradation zone, the water vapor in the high temperature and high humidity environment gradually penetrates from the physical edge of the color filter substrate 10 inwards, forming a gradient distribution of water vapor concentration that decreases from the edge to the interior in the edge area. This results in different degrees of water vapor erosion, different degrees of degradation of green pigment, and different decreases in green light transmittance at different locations of the green color resist 132. If the first color resist thickness of each green color resist 132 in the edge area is uniformly set to the same value, there will be problems such as insufficient compensation and incomplete elimination of redness at the edge of the color filter substrate 10 due to severe degradation, while excessive compensation and obvious greenness at the center due to less degradation.

[0057] Therefore, in this embodiment, by setting the first color resist thickness of each green color resist 132 in the edge region to be positively correlated with the distance of each green color resist 132 from the edge of the color filter substrate 10, the first color resist thickness of the green color resist 132 that is closer to the edge of the color filter substrate 10 and has more severe degradation is thinner and the reserved transmittance compensation margin is larger. Conversely, the first color resist thickness of the green color resist 132 that is farther from the edge of the color filter substrate 10 and has less degradation is thicker and the reserved transmittance compensation margin is smaller. This avoids the problem of insufficient or excessive compensation in the edge region due to uniform thinning thickness, and achieves precise matching between the location of different degradation levels and the compensation margin in the edge region, so that the green light transmittance of the entire edge region can approach the green light transmittance level of the central region after degradation.

[0058] For example, when fabricating the green color resist 132 on the color filter substrate 10, the edge region is divided into multiple sub-regions along the direction from near the edge of the color filter substrate 10 to near the center region. The first color resist thickness of each green color resist 132 in the sub-region closest to the edge of the color filter substrate 10 is set to the thinnest, the first color resist thickness of each green color resist 132 in the sub-region second closest to the edge of the color filter substrate 10 is set to the second thinnest, and so on, until the first color resist thickness of each green color resist 132 in the sub-region closest to the center region is set to the thickest but always remains less than the second color resist thickness of each green color resist 132 in the center region.

[0059] As an example, in specific manufacturing, halftone masks with different light-transmitting areas can be used to expose green color resist 132 in different sub-regions within the edge region. By controlling the different light transmittance of the masks corresponding to each sub-region, the development thickness of the green color resist 132 in each sub-region gradually increases from the edge to the center, thereby achieving a positive correlation between the thickness of the first color resist and the distance value. In this example, the green color resist 132 closest to the edge of the color filter substrate 10 in the edge region has the thinnest thickness due to the most severe moisture intrusion, allowing for the largest transmittance compensation margin. Conversely, the green color resist 132 relatively closer to the center of the edge region has a relatively thicker thickness due to less moisture intrusion, allowing for a smaller transmittance compensation margin. This creates a differentiated thickness gradient within the edge region that matches the degree of degradation.

[0060] This application also provides a drive compensation method, referring to... Figure 3 , Figure 3 This is a flowchart illustrating the first embodiment of the compensation method of this application.

[0061] In this embodiment, the driving compensation method is applied to the driving circuit in the liquid crystal display panel as described above, and the driving compensation method includes steps S10~S30: Step S10: Monitor the aging time of the liquid crystal display panel; It should be noted that the aging time refers to the cumulative time elapsed since the start of operation of the liquid crystal display panel in a high-temperature and high-humidity environment, measured in hours. In this embodiment, the aging time is monitored in real time by the driving circuit as the sole time-dimensional input parameter. Its value directly reflects the length of time the green color resist in the edge area has been exposed to the combined environment of high temperature, high humidity, and light. Since the degree of change in the chemical molecular structure of the green pigment in the green color resist gradually intensifies with the increase of exposure time, and the transmittance of the green light band continuously decreases with the increase of exposure time, the aging time is used as an indirect indicator to characterize the current degree of degradation of each green color resist in the edge area. The driving circuit tracks the degradation process by monitoring the change of this aging time and determines the compensation driving voltage required for each first green sub-pixel unit at different degradation stages. This aging time begins to accumulate from the first power-on operation of the liquid crystal display panel, pauses when the panel is turned off, and resumes when it is turned on again, until the end of the product's design life is reached.

[0062] Step S20: Determine the compensation driving voltage of the first green sub-pixel unit corresponding to each green color resist in the edge area of ​​the liquid crystal display panel according to the aging time. It should be noted that the first green sub-pixel unit refers to the sub-pixel structure located in the edge region of the liquid crystal display panel and spatially corresponding to each green color resist in the edge region. Each first green sub-pixel unit is composed of a pixel electrode on the thin-film transistor substrate, a corresponding green color resist on the color filter substrate, and a liquid crystal layer between them. It is the target of the compensation driving voltage in this embodiment. In the display area of ​​the liquid crystal display panel, the first green sub-pixel unit is different from the second green sub-pixel unit in the central region. The difference lies in that the green color resist corresponding to the first green sub-pixel unit has a first color resist thickness that is smaller than that of the green color resist corresponding to the second green sub-pixel unit, and the first green sub-pixel unit is located closer to the panel edge and is more significantly affected by high temperature and high humidity moisture intrusion. In this embodiment, each first green sub-pixel unit is independently applied a compensation driving voltage calculated based on the aging time to achieve independent dynamic adjustment of the green light output of each green sub-pixel unit in the edge region.

[0063] The compensation driving voltage refers to the driving voltage value applied to the first green sub-pixel unit corresponding to each green color resist in the edge region. This voltage value is not a fixed original driving voltage, but an adjusted driving voltage obtained by the driving circuit based on the real-time monitored aging time, by mapping the aging time to the corresponding voltage value. In this embodiment, the value of the compensation driving voltage changes dynamically with the aging time. For example, when the aging time is short and the degree of green color resist degradation is mild, the compensation driving voltage is set lower than the driving voltage value of the second green sub-pixel unit in the central region to suppress the excessively high green light output in the edge region; when the aging time reaches an intermediate value and the degree of green color resist degradation is moderate, the compensation driving voltage is set equal to the driving voltage value of the second green sub-pixel unit in the central region; when the aging time is long and the degree of green color resist degradation is severe, the compensation driving voltage is set higher than the driving voltage value of the second green sub-pixel unit in the central region to compensate for the loss of green light transmittance. The compensation driving voltage is output to each first green sub-pixel unit to dynamically adjust the deflection angle of the liquid crystal layer, thereby changing the emission intensity of green light after passing through the liquid crystal layer, so that the green light output in the edge region can be consistent with the green light output in the middle region in each aging stage.

[0064] Step S30: Output each compensation driving voltage to each first green sub-pixel unit.

[0065] It is understandable that physical pre-compensation achieved by setting the thickness of the first green color resist in the edge region to be less than the thickness of the second green color resist in the middle region is a static structural design that is fixed at the factory and cannot be adaptively adjusted as the operating time in high temperature and high humidity environments increases. Furthermore, the degree of change in the chemical molecular structure of the green pigment in the green color resist gradually intensifies with the accumulation of aging time, and the transmittance of the green light band shows a continuous downward trend. If only the fixed compensation margin provided by static physical thinning is relied upon without dynamic adjustment methods related to aging time, then when the degree of degradation deviates from the design expectation, the actual green light transmittance in the edge region still cannot be kept close to the green light transmittance in the middle region at each aging stage.

[0066] To address this, this embodiment proposes a driving compensation method. By monitoring the aging time of the liquid crystal display panel in real time, the compensation driving voltage of the first green sub-pixel unit corresponding to each green color resist in the edge region is determined based on the aging time. The compensation driving voltage is then output to each first green sub-pixel unit. Utilizing the physical characteristic that the transmittance of the liquid crystal layer changes with the driving voltage, the driving voltage of each first green sub-pixel unit is dynamically adjusted using the aging time as a time dimension input parameter characterizing the degradation process. This allows the compensation driving voltage to adaptively change with the increase of the aging time. Thus, a dynamic voltage adjustment mechanism synchronized with the degradation process is superimposed on the basis of static physical pre-compensation. This avoids the problem of insufficient compensation accuracy caused by static physical thinning alone being unable to adapt to the dynamic development of degradation with the aging time. It also avoids the reliability problems such as continuous increase in power consumption, crosstalk, and image retention caused by the compensation reference deviating from the physical thickness and aging process and relying solely on real-time brightness feedback to significantly adjust the voltage in pure circuit compensation schemes. This achieves dynamic and accurate compensation related to the aging time, ensuring that the green light output in the edge region remains consistent with that in the central region at each aging stage, covering the entire life cycle of the liquid crystal display panel.

[0067] For example, a timing module is set in the driving circuit of the liquid crystal display panel. The timing module accumulates the operating time of the liquid crystal display panel in a high temperature and high humidity environment from the first power-on operation, and stores it in the memory unit of the driving circuit in real time in hours. The accumulation is paused when the panel is turned off and resumed when it is turned on again. During the actual operation of the liquid crystal display panel, the driving circuit reads the accumulated time value stored in the timing module in real time as the aging time. After obtaining the aging time, the driving circuit calls the compensation data table or compensation algorithm pre-stored in the driving circuit according to the numerical range of the aging time, and maps the specific value of the aging time to the corresponding compensation driving voltage value. The compensation data table or compensation algorithm contains a one-to-one correspondence between the aging time and the compensation driving voltage. The driving circuit outputs the mapped compensation driving voltage value to each first green sub-pixel unit corresponding to each green color resistor in the edge area, so that the liquid crystal layer in each first green sub-pixel unit is deflected to the corresponding angle according to the compensation driving voltage, thereby adjusting the emission intensity of green light after passing through the liquid crystal layer, and realizing the consistency of green light output in the edge area and green light output in the middle area under the current aging time.

[0068] This embodiment provides a driving compensation method. By monitoring the aging time of the liquid crystal display panel in real time, the compensation driving voltage of the first green sub-pixel unit corresponding to each green color resist in the edge region is determined according to the aging time. Then, each compensation driving voltage is output to each first green sub-pixel unit. The aging time is used as a time dimension input parameter to characterize the degradation process to drive the voltage dynamic adjustment. The compensation driving voltage changes adaptively with the increase of aging time. Thus, a dynamic voltage adjustment mechanism synchronized with the degradation process is superimposed on the static physical pre-compensation. This avoids the problem of insufficient compensation accuracy caused by static physical thinning alone being unable to adapt to the dynamic development of degradation with aging time. It also avoids the reliability problems such as continuous increase in power consumption, crosstalk, and image retention caused by relying on real-time brightness feedback in pure circuit compensation schemes. It achieves dynamic and accurate compensation related to aging time, so that the green light output in the edge region can be consistent with that in the central region at each aging stage, covering the entire life cycle of the liquid crystal display panel.

[0069] In one feasible implementation, step S20 may include steps S21-S22: Step S21: Obtain the time-voltage mapping relationship of each first green sub-pixel unit; It should be noted that the duration-voltage mapping relationship refers to the correspondence between the aging duration and the compensation driving voltage independently established for each first green sub-pixel unit. This correspondence is pre-stored in the driving circuit and is used to convert the currently monitored aging duration value into the compensation driving voltage value that needs to be applied to the first green sub-pixel unit.

[0070] In this embodiment, the establishment of the time-voltage mapping relationship is based on the degradation characteristics of the green color resist in the edge region under different aging times. Specifically, it can take the form of a lookup table containing a one-to-one correspondence between aging time and compensation driving voltage, or a fitting formula or algorithm model describing the functional relationship between aging time and compensation driving voltage. Since the degree of moisture erosion suffered by the green color resist at different locations in the edge region of the liquid crystal display panel varies, the degradation rate of the green color resist corresponding to each first green sub-pixel unit may not be exactly the same. Therefore, each first green sub-pixel unit has its own independent time-voltage mapping relationship. When the driving circuit applies the compensation driving voltage to each first green sub-pixel unit, it calls the time-voltage mapping relationship corresponding to each first green sub-pixel unit to map the same aging time to different compensation driving voltage values. In this time-voltage mapping relationship, the compensation driving voltage changes according to the degradation law of green color resist as the aging time increases. When the aging time is short, it is mapped to a lower voltage value. When the aging time reaches the middle value, it is mapped to a voltage value equal to the driving voltage of the middle region. When the aging time is long, it is mapped to a higher voltage value. This allows the compensation driving voltage of each first green sub-pixel unit to adaptively change in accordance with the degradation process of its corresponding green color resist.

[0071] Step S22: Based on the voltage mapping relationship of each duration, the aging duration is mapped to the compensation driving voltage of the corresponding first green sub-pixel unit.

[0072] It is understood that this embodiment further obtains the duration-voltage mapping relationship of each first green sub-pixel unit, and then maps the aging duration to the corresponding compensation driving voltage of the first green sub-pixel unit according to the duration-voltage mapping relationship. The duration-voltage mapping relationship independently corresponding to each first green sub-pixel unit is used as the conversion logic between the aging duration and the compensation driving voltage. This enables the driving circuit to convert the monitored specific value of the aging duration into the compensation driving voltage value that actually needs to be applied to each first green sub-pixel unit according to the mapping relationship when executing the driving compensation method of this embodiment. This avoids the problem of voltage determination not being able to be executed due to the lack of a conversion path from the aging duration to the compensation driving voltage. It realizes the independent and operable calculation of the compensation driving voltage of each first green sub-pixel unit based on its own duration-voltage mapping relationship.

[0073] In the specific implementation process, the compensation driving voltage includes the first driving voltage, and step S22 may include step S221: Step S221: If the aging time is less than the first time threshold in the voltage mapping relationship of each time, the aging time is mapped to the first driving voltage of the corresponding first green sub-pixel unit according to the voltage mapping relationship of each time. The voltage value of the first driving voltage is less than the driving voltage value of the second green sub-pixel unit corresponding to any green color resist in the central area of ​​the liquid crystal display panel.

[0074] It should be noted that the first duration threshold refers to a pre-set aging duration critical value in the duration-voltage mapping relationship. This critical value is used to compare with the aging duration monitored in real time to determine whether the green color resist in the edge region is still in the initial stage of degradation, and accordingly determine the adjustment direction of the compensation drive voltage as negative compensation. In the duration-voltage mapping relationship, the first duration threshold represents the time boundary experienced by the green color resist in the edge region from its factory state to the first time its overall optical density value reaches the overall optical density value of the central region. When the aging duration is less than the first duration threshold, it indicates that the degradation of the green color resist in the edge region is still in the initial stage, and its green light transmittance is still higher than that of the green color resist in the central region. At this time, a compensation drive voltage with a voltage value lower than that of the central region needs to be applied to suppress the excessively high green light output in the edge region. The specific value of the first duration threshold is determined in advance by conducting a degradation test on the green color resist material used in a high temperature and high humidity environment. Once the green color resist material and panel structure are determined, the threshold is a fixed known parameter and is pre-stored in the corresponding duration voltage mapping relationship in the driving circuit.

[0075] The first driving voltage refers to the compensation driving voltage obtained by mapping the aging time through the time-voltage mapping relationship when the aging time is less than the first time threshold in the time-voltage mapping relationship. This voltage value is the driving voltage applied to the first green sub-pixel unit in the initial stage of degradation in the driving compensation method. The key to the first driving voltage is that its voltage value is less than the driving voltage value of the second green sub-pixel unit corresponding to any green color resist in the central region. This makes the driving voltage of each first green sub-pixel unit in the edge region lower than the driving voltage of the green sub-pixel in the central region in the initial stage of degradation. This reduces the transmittance of the liquid crystal layer in the edge region and suppresses the high green light transmittance caused by the green color resist in the edge region not yet deteriorating or having a slight degree of deterioration. This ensures that the actual green light output in the edge region is consistent with the green light output in the central region. The first driving voltage gradually changes within a range below the driving voltage value as the aging time increases, until its voltage value rises to equal the driving voltage value when the aging time reaches the first time threshold. That is, the first driving voltage is positively correlated with the aging time.

[0076] The second green sub-pixel unit refers to the sub-pixel structure located in the central region of the liquid crystal display panel and spatially corresponding to each green color resist in the central region. Each second green sub-pixel unit is composed of a pixel electrode on the thin-film transistor substrate, a corresponding green color resist on the color filter substrate, and a liquid crystal layer between the two. Since the central region is far from the panel edge and is less affected by moisture intrusion in a high-temperature and high-humidity environment, the green pigment in the green color resist inside is less likely to undergo significant chemical molecular structure changes, and the transmittance of the green light band can remain relatively stable. Therefore, in this embodiment, the second green sub-pixel unit serves as a reference object for the green light output standard. The applied driving voltage value represents the normal green light driving condition of the liquid crystal display panel under the design target and is a benchmark for measuring whether the compensation driving voltage required for the first green sub-pixel unit in the edge region should be lower than, equal to, or higher than the normal level.

[0077] The driving voltage value refers to the original driving voltage applied to any second green sub-pixel unit in the central region. This voltage value represents the normal driving condition of the green sub-pixel unit corresponding to the green color resist in the central region without any compensation adjustment. In this embodiment, the driving voltage value serves as the reference value for voltage mapping in the time-duration voltage mapping relationship. The first driving voltage, the second driving voltage, and the third driving voltage are all defined and compared based on this driving voltage value. That is, the voltage value of the first driving voltage is less than this driving voltage value, the voltage value of the second driving voltage is equal to this driving voltage value, and the voltage value of the third driving voltage is greater than this driving voltage value. By using this driving voltage value as a fixed comparison reference, the time-duration voltage mapping relationship can output a compensation driving voltage with a definite magnitude relationship to this driving voltage value at different degradation stages, so that the adjustment range of the compensation driving voltage has a clear reference system and quantitative basis.

[0078] Understandably, when the aging time is less than the first time threshold in the time-voltage mapping relationship, it is determined that the green color resist in the edge region is still in the initial stage of degradation. Its green light transmittance is still higher than that of the green color resist in the middle region because the thickness of the first color resist is less than that of the second color resist. At this time, the aging time needs to be mapped to a first driving voltage with a voltage value less than the driving voltage value of the second green sub-pixel unit in the middle region. Using the first time threshold as the stage division boundary, the compensation driving voltage is clearly limited to be lower than the driving voltage value in the middle region in the initial stage of degradation. This avoids the problem that the green light output in the edge region cannot be effectively suppressed in the initial stage, resulting in the greening of the panel edge. It achieves the quantitative mapping that the compensation driving voltage in the negative compensation stage is accurately lower than the driving voltage value in the middle region, ensuring that the green light output in the edge region can be accurately reduced to the same level as the middle region in the initial stage of degradation.

[0079] For example, a first duration threshold is pre-stored in the duration-voltage mapping relationship for each first green sub-pixel unit in the driving circuit. This first duration threshold is pre-determined and written into the corresponding duration-voltage mapping relationship by conducting a degradation test on the green color resist material under high temperature and high humidity conditions. After the driving circuit obtains the aging time of the liquid crystal display panel in real time, for any first green sub-pixel unit, it calls the duration-voltage mapping relationship corresponding to the first green sub-pixel unit and compares the aging time with the first duration threshold in the duration-voltage mapping relationship. If the driving circuit determines that the aging time is less than the first duration threshold, the driving circuit determines that the green color resist in the edge region corresponding to the first green sub-pixel unit is currently in the initial stage of degradation, and its green light transmittance is less than that of the first color resist due to its thickness being less than the first duration threshold. The green light transmittance is higher than that of the green color resist in the central region due to the thickness of the second color resist. Subsequently, the driving circuit maps the specific value of the current aging time to the corresponding first driving voltage according to the correspondence rule between the aging time and the compensation driving voltage in the time-voltage mapping relationship. The voltage value of the first driving voltage is preset to be less than the driving voltage value of any second green sub-pixel unit in the central region in the time-voltage mapping relationship. The driving circuit outputs the first driving voltage as the compensation driving voltage to the first green sub-pixel unit, so that the liquid crystal layer of the first green sub-pixel unit is deflected to the corresponding angle under the action of the first driving voltage, thereby reducing the emission intensity of green light after passing through the liquid crystal layer in the edge region, suppressing the excessively high green light output of the first green sub-pixel unit, and making it consistent with the green light output in the central region.

[0080] In specific implementation, the compensation driving voltage also includes a second driving voltage, and step S22 may also include step S222: Step S222: When the aging time is greater than or equal to the first time threshold in the voltage mapping relationship and less than the second time threshold in the corresponding voltage mapping relationship, the aging time is mapped to the second driving voltage of the corresponding first green sub-pixel unit according to the voltage mapping relationship. Wherein, the second duration threshold is greater than the first duration threshold, and the voltage value of the second driving voltage is equal to the driving voltage value of any second green sub-pixel unit.

[0081] It should be noted that the second duration threshold is a pre-set critical value for aging time in the duration-voltage mapping relationship. This critical value is greater than the first duration threshold and is used to compare the value with the aging time monitored in real time to determine whether the green color resist in the edge region has entered a severe degradation stage and accordingly determine whether the adjustment direction of the compensation driving voltage should switch from zero compensation to positive compensation. In the duration-voltage mapping relationship, the second duration threshold represents the time boundary experienced by the green color resist in the edge region from the equilibrium state to its overall optical density value starting to exceed the overall optical density value of the central region. When the aging time is greater than or equal to the first duration threshold and less than the second duration threshold, the overall optical density value of the green color resist in the edge region approaches the overall optical density value of the central region. At this time, the compensation driving voltage is equal to the driving voltage value of the central region. The specific value of the second duration threshold is pre-determined by conducting degradation tests on the green color resist material used in a high temperature and high humidity environment, and together with the first duration threshold, it constitutes a complete critical reference system in the duration-voltage mapping relationship for determining the compensation stage from negative compensation to zero compensation and then to positive compensation.

[0082] The second driving voltage refers to the compensation driving voltage obtained by mapping the aging time through the time-voltage mapping relationship when the aging time is greater than or equal to the first time threshold and less than the second time threshold. This voltage value is the driving voltage applied to the first green sub-pixel unit in the intermediate equilibrium stage of degradation in this embodiment. The key to the second driving voltage is that its voltage value is equal to the driving voltage value of any second green sub-pixel unit in the central region. This feature makes the driving voltage of each first green sub-pixel unit in the edge region equal to the driving voltage of the green sub-pixel unit in the central region during the intermediate equilibrium stage of degradation. At this time, the overall optical density value of the green color resist in the edge region has approached the overall optical density value in the central region, and the actual green light transmittance of the green color resist in the edge region is consistent with the green light transmittance of the green color resist in the central region, without the need to change the transmittance of the liquid crystal layer through voltage adjustment. The second driving voltage remains unchanged at the level of the driving voltage value as the aging time increases until the aging time reaches the second time threshold, at which point it switches to the third driving voltage.

[0083] It is understandable that, since degradation is a dynamic process that continues to develop over time, the overall optical density value of the green color resist in the edge region will gradually increase from being lower than that in the middle region in the initial stage to approaching that of the middle region. If only a first time threshold is set as the boundary for the stage division, the technical solution will lack an executable mapping relationship to determine what voltage value should be output in this stage after the aging time exceeds the first time threshold. This may cause the driving circuit to continue to perform negative compensation after exceeding the first time threshold, resulting in a voltage lower than the driving voltage value in the middle region. This will cause the green light output in the edge region to be lower than the green light output level in the middle region due to the continuously low driving voltage, resulting in a new problem of darker edges.

[0084] To address this, this embodiment further sets a second duration threshold greater than the first duration threshold. When the aging time is greater than or equal to the first duration threshold and less than the second duration threshold, it is determined that the overall optical density value of the green color resist in the edge region has increased from the initial stage to approach the overall optical density value of the central region, and the two have reached a balance. At this time, the actual green light transmittance of the green color resist in the edge region is consistent with the green light transmittance of the green color resist in the central region. There is no need to change the transmittance of the liquid crystal layer through voltage adjustment. Therefore, according to the duration-voltage mapping relationship, the aging time is mapped to a second driving voltage with a voltage value equal to the driving voltage value of any second green sub-pixel unit in the central region. The second duration threshold is used as the termination boundary of the intermediate balance stage and the starting boundary of the subsequent positive compensation stage. This avoids the problem of edge darkening caused by the lack of mapping rules after exceeding the first duration threshold and continuing to perform negative compensation. It realizes the staged switching from negative compensation to zero compensation, so that the compensation driving voltage is precisely limited to equal to the driving voltage value of the central region in the intermediate balance stage, ensuring that the green light output in the edge region can be consistent with the central region without voltage adjustment in this stage.

[0085] For example, a second duration threshold is pre-stored in the duration-voltage mapping relationship for each first green sub-pixel unit in the driving circuit. This second duration threshold is greater than the first duration threshold. It is pre-determined and written into the corresponding duration-voltage mapping relationship by conducting a degradation test on the green color resist material under high temperature and high humidity conditions. After the driving circuit obtains the aging time of the liquid crystal display panel in real time, for any first green sub-pixel unit, it calls the duration-voltage mapping relationship corresponding to the first green sub-pixel unit and compares the aging time with the first duration threshold and the second duration threshold in the duration-voltage mapping relationship. If the driving circuit determines that the aging time is greater than or equal to the first duration threshold and less than the second duration threshold, the driving circuit determines that the green color resist in the edge region corresponding to the first green sub-pixel unit is currently in an intermediate equilibrium stage, and its overall light density is... The light density value has approached the overall light density value of the central region. At this time, the actual green light transmittance of the green color resist in the edge region is consistent with the green light transmittance of the green color resist in the central region. Subsequently, the driving circuit maps the specific value of the current aging time to the corresponding second driving voltage according to the correspondence between the aging time and the compensation driving voltage in the time-voltage mapping relationship. The voltage value of the second driving voltage is preset to be equal to the driving voltage value of any second green sub-pixel unit in the central region in the time-voltage mapping relationship. The driving circuit outputs the second driving voltage as the compensation driving voltage to the first green sub-pixel unit, so that the liquid crystal layer of the first green sub-pixel unit is deflected to the same angle as the second green sub-pixel unit in the central region under the action of the second driving voltage, so that the green light emission intensity of the edge region is consistent with the green light emission intensity of the central region.

[0086] In specific implementation, the compensation driving voltage also includes a third driving voltage, and step S22 may also include step S223: Step S223: If the aging time is greater than or equal to the second time threshold in the voltage mapping relationship of each time, the aging time is mapped to the third driving voltage of the corresponding first green sub-pixel unit according to the voltage mapping relationship of each time. The voltage value of the third driving voltage is greater than the driving voltage value of any second green sub-pixel unit.

[0087] It should be noted that the third driving voltage refers to the compensation driving voltage obtained by mapping the aging time through the time-voltage mapping relationship when the aging time is greater than or equal to the second time threshold in the time-voltage mapping relationship. This voltage value is the driving voltage applied to the first green sub-pixel unit in the severe degradation stage in the driving compensation method. The key to the third driving voltage is that its voltage value is greater than the driving voltage value of any second green sub-pixel unit in the central region. This feature makes the driving voltage of each first green sub-pixel unit in the edge region higher than the driving voltage of the green sub-pixels in the central region during the severe degradation stage, thereby improving the transmittance of the liquid crystal layer in the edge region. This compensates for the loss of green light transmittance caused by the intensified degradation of green color resist in the edge region and the overall light density value exceeding the overall light density value in the central region, so that the actual green light output in the edge region is consistent with the green light output in the central region again. The third driving voltage gradually increases within a range above the driving voltage value as the aging time further increases, so as to continuously improve the compensation strength in line with the continuous aggravation of the green color resist degradation in the edge region, and ensure that the green light output in the edge region does not fall below the green light output level in the central region due to the aggravation of degradation during the severe degradation stage.

[0088] It is understandable that the degradation effect of high temperature and high humidity on the green color resist in the edge area does not stop in the intermediate equilibrium stage, but continues to intensify with the further accumulation of aging time. The overall optical density value of the green color resist in the edge area will gradually increase from approaching the overall optical density value of the central area to significantly exceeding the overall optical density value of the central area. If no corresponding mapping relationship is set for this severe degradation stage, there is no executable basis for determining the voltage after the aging time exceeds the second time threshold. As a result, the actual green light transmittance of the green color resist in the edge area, which continues to decrease due to the intensified degradation, cannot be effectively compensated, and the problem of pinking and reddening will reappear.

[0089] To this end, this embodiment further determines that the green color resist in the edge region has entered a severely degraded stage and its overall optical density value has exceeded that of the central region when the aging time is greater than or equal to the second time threshold in the time-voltage mapping relationship. At this time, the green light transmittance of the green color resist in the edge region is lower than that of the green color resist in the central region. It is necessary to actively enhance the green light output of the edge region to compensate for the transmittance loss. Therefore, according to the time-voltage mapping relationship, the aging time is mapped to a third driving voltage with a voltage value greater than the driving voltage value of any second green sub-pixel unit in the central region. The second time threshold is used as the trigger boundary of the positive compensation stage, which avoids the recurrence of the pink and red color problems caused by the lack of mapping rules in the severely degraded stage. It completes the full stage coverage from negative compensation to zero compensation to positive compensation, so that the compensation driving voltage can follow the complete evolution process of the aging time from the initial stage to the balanced stage to the severely degraded stage to achieve adaptive mapping, covering all degraded stages of the entire life cycle of the liquid crystal display panel.

[0090] For example, a second duration threshold is pre-stored in the duration-voltage mapping relationship for each first green sub-pixel unit in the driving circuit. This second duration threshold is greater than the first duration threshold. It is pre-determined and written into the corresponding duration-voltage mapping relationship by conducting a degradation test on the green color resist material under high temperature and high humidity conditions. After the driving circuit obtains the aging time of the liquid crystal display panel in real time, for any first green sub-pixel unit, it calls the duration-voltage mapping relationship corresponding to the first green sub-pixel unit and compares the aging time with the second duration threshold in the duration-voltage mapping relationship. When the driving circuit determines that the aging time is greater than or equal to the second duration threshold, the driving circuit determines that the green color resist in the edge region corresponding to the first green sub-pixel unit has entered a severely degraded stage, and its overall optical density value has exceeded the overall optical density value of the central region. At this time, the edge region... The green light transmittance of the green color resist in the edge region is lower than that of the green color resist in the middle region. Subsequently, the driving circuit maps the specific value of the current aging time to the corresponding third driving voltage according to the correspondence between the aging time and the compensation driving voltage in the time-voltage mapping relationship. The voltage value of the third driving voltage is preset to be greater than the driving voltage value of any second green sub-pixel unit in the middle region in the time-voltage mapping relationship. The driving circuit outputs the third driving voltage as the compensation driving voltage to the first green sub-pixel unit, so that the liquid crystal layer of the first green sub-pixel unit increases the deflection angle under the action of the third driving voltage, thereby increasing the emission intensity of green light after passing through the liquid crystal layer in the edge region, compensating for the loss of green light transmittance due to the aggravated degradation of the green color resist in the edge region, and making the green light output in the edge region consistent with the green light output in the middle region again.

[0091] In one feasible implementation, the drive compensation method may further include steps S01 to S04: Step S01: Monitor the transmittance of each green color resist in the edge area of ​​the sample display panel under different aging times; It should be noted that the sample display panel refers to a reference panel from the same batch as the liquid crystal display panel to be compensated for, which has the same structural design and material system. This sample display panel was pre-existing in a high-temperature and high-humidity environment for aging tests before the implementation of the above embodiments. In this embodiment, the sample display panel serves as the source carrier for the time-voltage mapping relationship. During the test, the transmittance data of each green color resist in its edge area at different aging times is measured, and a mapping relationship between aging time and compensation driving voltage is constructed based on these measurements. This mapping relationship is subsequently stored in the driving circuit of the panel to be compensated and used to convert the real-time monitored aging time into the compensation driving voltage. The difference between the sample display panel and the panel to be compensated is that the sample display panel is only used for testing and data acquisition and does not directly display output to the user.

[0092] Transmittance refers to the ratio of the intensity of the emitted light to the intensity of the incident light after green incident light passes through each green color resist in the edge area of ​​the sample display panel. This ratio depends on the absorption capacity of the green color resist for green light and is determined exponentially by the product of the optical density coefficient of the green color resist and its thickness according to the Lambert-Beer law. In this embodiment, transmittance is a fundamental measurement that needs to be monitored in real time during the aging test of the sample display panel, changing with the aging time. This embodiment obtains data on the degree of degradation of the green color resist in the edge area over time by measuring transmittance at different aging times, and uses this data as the input basis for constructing a time-voltage mapping relationship.

[0093] Step S02: Determine the first optical density coefficient of each green color resist in the edge area of ​​the sample display panel based on the ratio of each transmittance to the third color resist thickness of each green color resist in the edge area of ​​the sample display panel. It should be noted that the third color resist thickness refers to the actual physical thickness of each green color resist in the edge area of ​​the sample display panel. This thickness corresponds to the first color resist thickness of each green color resist in the edge area of ​​the aforementioned liquid crystal display panel, and the two are numerically equal. In this embodiment, the third color resist thickness is a known parameter used to calculate the first optical density coefficient from the measured transmittance. Its value is pre-stored and used as the denominator when determining the first optical density coefficient based on the ratio of each transmittance to each third color resist thickness. It is a necessary intermediate parameter for converting the measured quantity of transmittance into the intrinsic material parameter of the first optical density coefficient.

[0094] The first optical density coefficient, according to the Lambert-Beer law, is a comprehensive physical quantity characterizing the absorption capacity of each green color resist in the edge region of the sample display panel for incident green light. Its value is equal to the product of the molar absorptivity of each green color resist in the edge region and the pigment concentration, representing the light absorption intensity of the green color resist per unit thickness. In this embodiment, the first optical density coefficient is not a fixed constant, but a dynamic parameter calculated by taking the logarithm of the transmittance (base 10) and dividing it by the negative value of the third color resist thickness, based on the transmittance monitored in real-time during the aging test of the sample display panel. It reflects the degree of degradation of the green color resist in the edge region under different aging durations and is one of the core physical quantities needed to construct the time-voltage mapping relationship.

[0095] Step S03: Obtain the second optical density coefficient and the fourth color resist thickness corresponding to any green color resist in the central area of ​​the sample display panel; It should be noted that the second optical density coefficient refers to a comprehensive physical quantity representing the absorption capacity of any green color resist in the central region of the sample display panel for incident green light. Its value is equal to the product of the molar absorptivity of the green color resist in the central region and the pigment concentration, representing the light absorption intensity of the green color resist per unit thickness in the central region. In this embodiment, the second optical density coefficient is obtained as the standard optical density value of the green color resist in the central region under undegraded conditions and used to construct a time-voltage mapping relationship. This coefficient remains stable throughout the entire aging test of the sample display panel and, together with the product of the fourth color resist thickness, constitutes the baseline overall optical density value of the green color resist in the central region, representing the target state that the green color resist in the edge region should approach after degradation.

[0096] The fourth color resist thickness refers to the actual physical thickness of each green color resist in the central region of the sample display panel. This thickness corresponds to the second color resist thickness of each green color resist in the central region of the aforementioned liquid crystal display panel, and the two are numerically equal. In this embodiment, the fourth color resist thickness is a known parameter used to calculate the overall optical density value of the central region. Its value is pre-stored in the driving compensation method and multiplied by the second optical density coefficient to obtain the overall optical density value of the green color resist in the central region. This value is used as a reference value for comparison with the overall optical density value of the edge region when constructing the mapping relationship between the aging time of the sample green sub-pixel unit and the compensation driving voltage.

[0097] Step S04: For any green sub-pixel unit in the edge area of ​​the sample display panel, based on the product of the first optical density coefficient and transmittance of the green color resist corresponding to the green sub-pixel unit, the product of the second optical density coefficient and the thickness of the fourth color resist, and the green sub-pixel driving voltage in the middle area of ​​the sample display panel, construct the mapping relationship between the aging time and the compensation driving voltage of the green sub-pixel unit, and obtain the time-voltage mapping relationship of the corresponding first green sub-pixel unit.

[0098] It should be noted that the green sub-pixel driving voltage refers to the driving voltage value applied to any second green sub-pixel unit in the central region of the sample display panel. This voltage value represents the normal driving condition of the green sub-pixel unit corresponding to the green color resist in the central region without any compensation adjustment. In this embodiment, the green sub-pixel driving voltage serves as the reference value for the compensation driving voltage in the time-voltage mapping relationship. When constructing the mapping relationship between the aging time of the sample green sub-pixel unit and the compensation driving voltage, the compensation driving voltage corresponding to the sample green sub-pixel unit under different aging times is obtained by superimposing the green sub-pixel driving voltage in the central region with the adjustment amount determined by the difference between the product of the first optical density coefficient and the third color resist thickness and the product of the second optical density coefficient and the fourth color resist thickness. This ensures that the constructed time-voltage mapping relationship includes a complete voltage mapping range with voltage values ​​lower than, equal to, or higher than the green sub-pixel driving voltage.

[0099] It is understandable that, since the time-voltage mapping relationship may deviate from reality by relying only on empirical or theoretical estimates, the compensation drive voltage output based on the mapping relationship may not match the actual degradation state of the green color resist in the edge region, thus causing the drive compensation method to lose its accuracy.

[0100] To this end, this embodiment further monitors the transmittance of each green color resist in the edge region of the sample display panel under different aging times. Based on the ratio of each transmittance to the third color resist thickness of each green color resist in the edge region of the sample display panel, the first optical density coefficient of each green color resist in the edge region of the sample display panel is determined. The second optical density coefficient and fourth color resist thickness corresponding to any green color resist in the central region of the sample display panel are obtained. Then, for any sample green sub-pixel unit in the edge region of the sample display panel, based on the product of the first optical density coefficient and the third color resist thickness, the product of the second optical density coefficient and the fourth color resist thickness of the corresponding green color resist, and the green sub-pixel driving voltage in the central region of the sample display panel, a mapping relationship between the aging time and the compensation driving voltage of the sample green sub-pixel unit is constructed. This method supports using the transmittance data measured at different aging times of the sample display panel to back-calculate the first optical density coefficient reflecting the actual degradation degree of the green color resist using the Lambert-Beer Law. Then, the voltage adjustment amount required for different aging times is determined by the difference between the product of the first optical density coefficient and the thickness of the third color resist and the product of the second optical density coefficient and the thickness of the fourth color resist. The complete time-voltage mapping relationship is constructed by superimposing this adjustment amount on the green sub-pixel driving voltage in the central region as a reference. This ensures that the establishment of the time-voltage mapping relationship is based on actual aging test data of the panel with the same material system rather than theoretical estimation, thereby avoiding the problem of inaccurate compensation caused by the lack of actual material degradation characteristics in the time-voltage mapping relationship. This achieves the accurate construction of the time-voltage mapping relationship of each first green sub-pixel unit based on the Lambert-Beer Law and actual aging test data.

[0101] For example, before implementing the driving compensation method for the liquid crystal display panel, the sample display panel is placed in a high temperature and high humidity environment for aging tests. During the test, starting from the initial moment when the aging time is zero, each aging time node is recorded sequentially at fixed time intervals, and at each aging time... The node measures the green band transmittance of each green color resist within the edge area of ​​the sample display panel; for any green sub-pixel unit within the edge area of ​​the sample display panel, the aging time is measured. Transmittance at the node The green sub-pixel unit in this sample corresponds to the third color resist thickness of the green color resist. The first optical density coefficient of the green color resist corresponding to the green sub-pixel unit of this sample during the degradation process. And the aging time of any green sub-pixel unit in the central area of ​​the sample display panel. Transmittance at the node The green sub-pixel unit in this sample corresponds to the fourth color resist thickness of the green color resist. The second optical density coefficient of the green color resist corresponding to the green sub-pixel unit of this sample during the degradation process. Some of the data is shown in Table 1 below:

[0102] Table 1 Among them, aging time The unit is hours. The drive circuit can be based on the formula: The aging time obtained by measurement Transmittance at the node The third color resist thickness corresponding to the green color resist of the green sub-pixel unit in this sample Substitute into the formula to calculate the aging time. The first optical density coefficient corresponding to the node Simultaneously, the second optical density coefficient of the green color resist in the central area of ​​the sample display panel was obtained. and the thickness of the fourth color resist And according to the compensation voltage formula: The aging time The first optical density coefficient calculated at the node The thickness of the third color resist Second optical density coefficient Fourth color resist thickness And the driving voltage of the green sub-pixels in the central area of ​​the sample display panel. Substituting into the formula, the compensation driving voltage of the green sub-pixel unit of the sample at this aging time node is calculated. ; Aging duration for each record The node repeats the above calculation to obtain the green sub-pixel unit of the sample at each aging time. The corresponding compensation drive voltage values ​​at each node Based on aging time Input variables, compensation drive voltage As an output variable, establish the aging time of the green sub-pixel unit in this sample. With compensation drive voltage The one-to-one mapping relationship between them yields the time-voltage mapping relationship for the corresponding first green sub-pixel unit.

[0103] The origin of the above compensation voltage formula is as follows: Suppose at any time The transmittance of the liquid crystal layer in the central region is The transmittance of the liquid crystal layer in the edge region is It should satisfy the following formula: =

[0104] in, The transmittance of the green color filter in the central area. Let be the transmittance of the green color filter in the edge region, meaning the effective green light output of the edge pixels is always equal to the effective green light output of the center pixels. From this, the circuit compensation function can be derived as follows:

[0105] And because = , Substituting, we get:

[0106] The VT curve, combined with the panel optical design, yields the corresponding relationship between liquid crystal voltages, i.e., the voltage compensation formula mentioned above:

[0107] Therefore, a relationship is established between the compensation drive voltage and the aging time on the time axis.

[0108] For example, to help understand the implementation flow of the drive compensation method obtained by combining the above embodiments, please refer to... Figure 4 , Figure 4 A simplified flowchart of a driving compensation method is provided, specifically: During the product design phase, the thickness of the first green color resist in the edge area of ​​the LCD panel is set to be less than the thickness of the second green color resist in the central area. This ensures that the green color resist in the edge area has a higher initial green light transmittance than that in the central area when shipped from the factory, thus reserving a physical compensation margin for the decrease in green light transmittance after the green color resist deteriorates under high temperature and humidity conditions. Based on this, the sample display panel is placed in a high temperature and humidity environment for aging tests. During the tests, the transmittance of each green color resist in the edge area is measured at different aging times, and the transmittance is determined according to the Lambert-Beer Law. A quantitative relationship was established between a negative optical density coefficient equal to 10 and the product of the color resist thickness. The first optical density coefficient at each aging time node was calculated by back-calculating the measured transmittance and the known third color resist thickness. Simultaneously, the second optical density coefficient and fourth color resist thickness of the green color resist in the central region were obtained. The product of the second optical density coefficient and the fourth color resist thickness was used as the baseline overall optical density value for the central region. Then, based on the difference between the product of the first optical density coefficient and the third color resist thickness and the product of the second optical density coefficient and the fourth color resist thickness, combined with the green sub-pixel driving voltage in the central region, the aging time for each aging time was calculated. The corresponding compensation driving voltage under the node is used to obtain a one-to-one time-voltage mapping relationship between aging time and compensation driving voltage. This time-voltage mapping relationship is pre-input into the timing controller in the driving circuit of the liquid crystal display panel in the form of a lookup table. During the actual operation of the liquid crystal display panel, the timing controller monitors the aging time in real time and calls the corresponding preset voltage logic in the lookup table according to the current aging time. Different liquid crystal driving voltages are output to each first green sub-pixel unit in the edge area and each second green sub-pixel unit in the middle area. Specifically, when the aging time is less than the first time threshold, the output voltage value is lower than the driving voltage value in the middle area to suppress the high green light output in the edge area. When the aging time reaches the intermediate balance stage, the output voltage value is equal to the driving voltage value in the middle area to maintain consistent green light output. When the aging time enters the severe degradation stage, the output voltage value is higher than the driving voltage value in the middle area to compensate for the loss of green light transmittance. Thus, through the synergistic cooperation of physical structure pre-compensation and dynamic voltage compensation based on aging time, a relative white balance is achieved in which the edge area and the middle area maintain consistent green light output in each aging stage.

[0109] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the driving compensation method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0110] This application provides a display device, which includes a liquid crystal display panel as described above; and / or at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, which are executed by the at least one processor to enable the at least one processor to perform the drive compensation method in Embodiment 1 above.

[0111] The following is for reference. Figure 5 The diagram illustrates a structural schematic of a display device suitable for implementing embodiments of this application. The display device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computer monitors. Figure 5 The display device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0112] like Figure 5 As shown, the display device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory 1002 or a program loaded from a storage device 1003 into a random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the display device. The processing unit 1001, the read-only memory 1002, and the random access memory 1004 are interconnected via a bus 1005. An input / output interface 1006 is also connected to the bus. Typically, the following systems can be connected to the input / output interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. The communication device 1009 allows the display device to exchange data with other devices wirelessly or via wired communication. Although the diagram shows display devices with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0113] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0114] The display device provided in this application, employing the driving compensation method described in the above embodiments, can solve the technical problem of effectively improving panel edge redness defects throughout its entire lifecycle without significantly increasing power consumption and compatibility issues with narrow bezels. Compared with the prior art, the beneficial effects of the display device provided in this application are the same as those of the driving compensation method provided in the above embodiments, and other technical features of this display device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0115] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0116] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0117] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A liquid crystal display panel, characterized in that, The liquid crystal display panel includes: a color filter substrate, a thin film transistor substrate, and liquid crystal located between the color filter substrate and the thin film transistor substrate. The color filter substrate includes a glass substrate, a planarization layer, and three primary color color resists disposed between the glass substrate and the planarization layer. The three primary color color resists are distributed in the central region of the color filter substrate and the edge region surrounding the central region. The three primary color color resists include a red color resist, a green color resist, and a blue color resist. The thickness of the first color resist in each green color resist in the edge region is less than the thickness of the second color resist in each green color resist in the middle region.

2. The liquid crystal display panel as described in claim 1, characterized in that, The first color resist thickness of the green color resist in any of the edge regions is determined based on the first molar absorptivity and first pigment concentration of the green color resist in the edge region, and the second molar absorptivity, second pigment concentration and second color resist thickness of the green color resist in the central region.

3. The liquid crystal display panel as described in claim 1, characterized in that, The first chromaticity thickness of each green color resist in the edge region is positively correlated with the distance of each green color resist in the edge region from the edge of the color filter substrate.

4. A driving compensation method, characterized in that, The driving compensation method, applied to the driving circuit in the liquid crystal display panel as described in any one of claims 1 to 3, comprises: Monitor the aging time of the liquid crystal display panel; Based on the aging time, the compensation driving voltage of each green color resist corresponding to the first green sub-pixel unit in the edge area of ​​the liquid crystal display panel is determined. Each of the aforementioned compensation driving voltages is output to each of the first green sub-pixel units.

5. The drive compensation method as described in claim 4, characterized in that, The step of determining the compensation driving voltage of each green color resist corresponding to the first green sub-pixel unit in the edge area of ​​the liquid crystal display panel based on the aging time includes: Obtain the time-voltage mapping relationship of each of the first green sub-pixel units; According to the aforementioned duration-voltage mapping relationship, the aging duration is mapped to the compensation driving voltage of the corresponding first green sub-pixel unit.

6. The drive compensation method as described in claim 5, characterized in that, The compensation driving voltage includes a first driving voltage, and the step of mapping the aging time to the compensation driving voltage corresponding to the first green sub-pixel unit according to the time-voltage mapping relationship includes: If the aging time is less than the first time threshold in each of the time-voltage mapping relationships, the aging time is mapped to the first driving voltage of the corresponding first green sub-pixel unit according to each of the time-voltage mapping relationships. Wherein, the voltage value of the first driving voltage is less than the driving voltage value of the second green sub-pixel unit corresponding to any green color resist in the central region of the liquid crystal display panel.

7. The drive compensation method as described in claim 6, characterized in that, The compensation driving voltage further includes a second driving voltage, and the step of mapping the aging time to the compensation driving voltage corresponding to the first green sub-pixel unit according to the time-voltage mapping relationship includes: If the aging time is greater than or equal to the first time threshold in each of the time-voltage mapping relationships, and less than the second time threshold in the corresponding time-voltage mapping relationship, the aging time is mapped to the second driving voltage of the corresponding first green sub-pixel unit according to each of the time-voltage mapping relationships. Wherein, the second duration threshold is greater than the first duration threshold, and the voltage value of the second driving voltage is equal to the driving voltage value of any second green sub-pixel unit.

8. The drive compensation method as described in claim 7, characterized in that, The compensation driving voltage further includes a third driving voltage, and the step of mapping the aging time to the compensation driving voltage corresponding to the first green sub-pixel unit according to the time-voltage mapping relationship includes: When the aging time is greater than or equal to the second time threshold in each of the time-voltage mapping relationships, the aging time is mapped to the third driving voltage corresponding to the first green sub-pixel unit according to each of the time-voltage mapping relationships. The voltage value of the third driving voltage is greater than the driving voltage value of any of the second green sub-pixel units.

9. The drive compensation method as described in claim 5, characterized in that, The drive compensation method further includes: The transmittance of each green color resist in the edge area of ​​the monitoring sample display panel under different aging times was measured. The first optical density coefficient of each green color resist in the edge area of ​​the sample display panel is determined based on the ratio of the transmittance of each color resist to the third color resist thickness of each green color resist in the edge area of ​​the sample display panel. Obtain the second optical density coefficient and the fourth color resist thickness corresponding to any green color resist in the central area of ​​the sample display panel; For any green sub-pixel unit in the edge region of the sample display panel, a mapping relationship between the aging time and the compensation driving voltage of the green sub-pixel unit is constructed based on the product of the first optical density coefficient and the transmittance of the green color resist corresponding to the green sub-pixel unit, the product of the second optical density coefficient and the thickness of the fourth color resist, and the green sub-pixel driving voltage in the middle region of the sample display panel, so as to obtain the time-voltage mapping relationship corresponding to the first green sub-pixel unit.

10. A display device, characterized in that, The display device includes a liquid crystal display panel as described in any one of claims 1 to 3; and / or, A memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the drive compensation method as described in any one of claims 4 to 9.

Images