CN114822418B

CN114822418B - Temperature-dependent compensation method of display device and display device

Info

Publication number: CN114822418B
Application number: CN202110135208.4A
Authority: CN
Inventors: 刘海啸; 张耀仁; 吴蕾
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Filing date: 2021-01-29
Publication date: 2024-07-05
Anticipated expiration: 2041-01-29

Abstract

The application provides a temperature-dependent compensation method of a display device and the display device, wherein a pixel compensation partition in the display device covers at least one light adjustable region, and a plurality of light adjustable regions comprise at least two temperature detection regions; the temperature-dependent compensation method comprises the following steps: an initial two-dimensional temperature distribution model is established according to the brightness signals of the light adjustable areas, the initial two-dimensional temperature distribution model is corrected according to the temperature signals received by the temperature sensors in the temperature detection areas to obtain a two-dimensional temperature distribution model, an initial two-dimensional pixel compensation gain distribution model aiming at the light adjustable areas is obtained according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table, and a two-dimensional pixel compensation gain distribution model aiming at a pixel compensation partition is determined according to the initial two-dimensional pixel compensation gain distribution model. The application can obtain more accurate temperature value and accurate pixel compensation gain in each light adjustable region in the display device.

Description

Temperature-dependent compensation method of display device and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a temperature-dependent compensation method for a display device and a display device.

Background

The display quality of the image picture of the display device is affected by temperature, for example, the color temperature of the image picture displayed in the region with higher temperature in the display device is colder than that in the region with lower temperature, and the subjective effect is bluish; when the display device has a plurality of areas with large temperature difference, the image picture of the display device has the problem of uneven color, and the subjective effect has dirty feeling.

One compensation scheme aiming at the temperature difference in the prior art is to acquire a temperature report value of a temperature sensor at the center of a display device; then estimating the temperature value of each region of the display device according to the position distribution of the structure which can be a heat source in the display device, for example, the temperature value of the region with higher temperature is increased by a specific temperature based on the temperature report value, and the temperature value of the region with lower temperature is subtracted by a specific temperature based on the temperature report value of the temperature sensor at the central position; acquiring temperature report values of all temperature sensors of the display device, and adopting processing modes such as discarding or interpolation for abnormal temperature report values; then determining the temperature value of each area according to the effective temperature report value in the temperature report values of all the temperature sensors, wherein the process adopts the modes of global displacement, compression and the like; and finally, determining the compensation gain of each pixel of each subarea according to the temperature value of each subarea and compensating the luminescence of the pixel.

In the above-mentioned compensation scheme, the position of the structure that can be used as a heat source in the display device is a main factor for determining the temperature value of each partition and thus the compensation gain of each partition, and the position of the structure that can be used as a heat source cannot accurately represent the temperature value of each partition, so that the compensation effect performed according to the above-mentioned compensation scheme is poor. The problem of the compensation effect of the compensation scheme is particularly obvious in the display device capable of being regulated and controlled in a partitioned manner because the temperature of each partition is different due to the fact that the light source of each partition in the display device capable of being regulated and controlled in a partitioned manner and the temperature of each partition depends on the brightness difference of the light source in each partition.

Disclosure of Invention

The application provides a temperature-dependent compensation method of a display device and the display device, which are used for solving the problems.

In a first aspect, the present application provides a temperature-dependent compensation method of a display device, the display device including a display panel; the display panel comprises N light adjustable areas, wherein the N light adjustable areas comprise M temperature detection areas, and each area of the display device corresponding to the temperature detection area is provided with a temperature sensor, wherein N is more than or equal to M, and M is more than or equal to 2; the display panel further comprises K pixel compensation subareas, and one pixel compensation subarea is overlapped with at least one light adjustable area along the thickness direction of the display panel, wherein K is more than or equal to 2; the temperature-following compensation method comprises the steps of establishing an initial two-dimensional temperature distribution model of the display device according to brightness signals of all light adjustable areas, correcting the initial two-dimensional temperature distribution model according to temperature signals received by temperature sensors in all temperature detection areas to obtain a two-dimensional temperature distribution model of the display device, and obtaining an initial two-dimensional pixel compensation gain distribution model aiming at the light adjustable areas according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table; and determining a two-dimensional pixel compensation gain distribution model for the pixel compensation partition according to the initial two-dimensional pixel compensation gain distribution model.

In an implementation manner of the first aspect, establishing an initial two-dimensional temperature distribution model of the display device according to the brightness signals of each light adjustable region includes recording the brightness signal L _i,n of the light adjustable region at the n-th position at the i-th moment, where a set of the first L moments closest to the current moment is U, i e U; the position set of the N light adjustable areas is V, N epsilon V; the brightness signals L _i,n are weighted and summed in a time domain, and the initial temperature estimated value T '_n of the light adjustable region at the n position is obtained by T' _n＝f(∑_i∈U w_i*L_i,n; where w _i is an influence coefficient of the time variable on the luminance signal L _i,n.

In one implementation manner of the first aspect, the display panel includes a backlight panel, the backlight panel includes a plurality of independently controllable dimming areas, the light adjustable areas of the display panel are dimming areas, and the luminance signal is a backlight luminance emitted by each dimming area of the backlight panel.

In an implementation manner of the first aspect, the display panel includes a plurality of pixels, the light adjustable area of the display panel is an area where the pixels are located, and the brightness signal is display brightness when the pixels perform image display.

In an implementation manner of the first aspect, correcting the initial two-dimensional temperature distribution model according to the temperature signals received by the temperature sensors in each temperature detection area, so as to obtain a two-dimensional temperature distribution model of the display device, where recording the temperature signals t″ _m received by the temperature sensors in the temperature detection areas at M positions, where m∈w is a set of positions of M temperature detection areas in N light adjustable areas; determining a temperature correction weight T _a according to a temperature signal T '_m of the temperature detection region and an initial temperature estimated value T' _m; wherein T' _m ε S, S is the set of initial temperature estimation values of M temperature detection areas; and correcting the initial temperature estimated value T' _n of the light adjustable region at the n position according to the temperature correction weight T _a to obtain the temperature estimated value T _n of the light adjustable region at the n position.

In an implementation manner of the first aspect, obtaining an initial two-dimensional pixel compensation gain distribution model for the light adjustable region according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table includes determining an initial pixel compensation gain LG (T _n) of the light adjustable region at the n position according to the two-dimensional temperature distribution model and the preset temperature-pixel compensation gain lookup table.

In one implementation manner of the first aspect, determining a two-dimensional pixel compensation gain distribution model for a pixel compensation partition according to an initial two-dimensional pixel compensation gain distribution model includes determining initial pixel compensation gains of a light adjustable region covered by the pixel compensation partition at a K position and at least two light adjustable regions adjacent to the pixel compensation partition at the K position according to the initial two-dimensional pixel compensation gain distribution model, wherein a set of positions of the K pixel compensation partitions is Z, K e Z; spatially filtering the light adjustable region covered by the pixel compensation partition at the k position and the initial pixel compensation gains of at least two light adjustable regions adjacent to the pixel compensation partition at the k position to obtain a pixel compensation gain LG _k at the k position, wherein LG (T _j) epsilon X is a set of the light adjustable region covered by the pixel compensation partition at the k position and the initial pixel compensation gains of at least two light adjustable regions adjacent to the pixel compensation partition at the k position; w _j is the weight coefficient of the spatial position.

In one implementation of the first aspect, X is a set of the ray tunable region covered by the pixel compensation partition at the k-position and an initial pixel compensation gain of all ray tunable regions adjacent to and surrounding the pixel compensation partition at the k-position.

In a second aspect, the present application provides a display device, where the display device may perform temperature-dependent pixel compensation using the temperature-dependent compensation method provided in the first aspect during a display process; the display device comprises a display panel, a driving chip and a temperature sensor; the display panel comprises N light adjustable areas and K pixel compensation areas, wherein the N light adjustable areas comprise M temperature detection areas, and one pixel compensation area is overlapped with at least one light adjustable area along the thickness direction of the display panel, wherein N is more than or equal to M, and M is more than or equal to 2,K and more than or equal to 2; the driving chip comprises a temperature-dependent compensation module and a driving unit, and the driving unit is used for driving the display panel to display images; the temperature sensor is disposed in a region of the display device corresponding to the temperature detection region. The temperature-following compensation module obtains compensation gains for each pixel compensation partition of the display panel according to the brightness signal of the display panel and the temperature signal obtained by the sensor, and the specific process comprises the following steps: acquiring brightness signals of each light adjustable region of the display panel from a driving unit and establishing an initial two-dimensional temperature distribution model of the display device; acquiring temperature signals from temperature sensors arranged in each temperature detection area of the display panel and correcting the initial two-dimensional temperature distribution model to obtain a two-dimensional temperature distribution model of the display device; obtaining an initial two-dimensional pixel compensation gain distribution model aiming at a light adjustable area of the display panel according to a two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table; a two-dimensional pixel compensation gain distribution model for a pixel compensation partition of the display panel is determined from the initial two-dimensional pixel compensation gain distribution model.

In one implementation of the second aspect, the display panel includes a backlight panel and a display screen, the backlight panel emitting backlight to the display screen; the backlight plate comprises a dimming area, the dimming area is used as a light adjustable area of the display panel, and the backlight brightness emitted by the dimming area in the backlight plate is used as a brightness signal of the display panel; the driving unit comprises a display screen driving unit and a backlight driving unit, wherein the display screen driving unit is used for controlling the display screen to display, and the backlight plate driving unit is used for controlling the backlight plate to emit backlight to the display screen; the driving chip also comprises a partition dimming module, and the partition dimming module respectively controls the backlight brightness of each dimming area through the backlight plate driving unit.

In an implementation manner of the second aspect, obtaining, from the driving unit, a luminance signal of each light adjustable region of the display panel includes that the zonal dimming module obtains a backlight driving signal of each dimming region in the backlight panel from the backlight driving unit, processes the backlight driving signal in each dimming region to obtain a luminance signal corresponding to each dimming region, and the zonal dimming module transmits the obtained luminance signal to the temperature-dependent compensation module.

In an implementation manner of the second aspect, obtaining the luminance signal of each light adjustable region of the display panel from the driving unit includes that the temperature-dependent compensation module obtains a backlight driving signal of each dimming region in the backlight panel from the backlight panel driving unit, and processes the backlight driving signal in each dimming region to obtain a luminance signal corresponding to each dimming region.

In an implementation manner of the second aspect, obtaining the luminance signal of each light adjustable region of the display panel from the driving unit includes that the temperature-following compensation module obtains a light-emitting driving signal of each light adjustable region of the display screen from the display screen driving unit, estimates a backlight driving signal of each dimming region of the backlight plate according to the light-emitting driving signal, and processes the backlight driving signal in each dimming region to obtain the luminance signal corresponding to each dimming region.

In a third aspect, the present application provides a display device, the display device including a display panel, the display panel including N light adjustable regions and K pixel compensation partitions, there being overlap between one pixel compensation partition and at least one light adjustable region along a thickness direction of the display panel, each light adjustable region being provided with a temperature sensor therein, wherein 2 is less than or equal to K,2 is less than or equal to N; the display device can establish a two-dimensional temperature distribution model of the display device according to temperature signals of temperature sensors in each light adjustable region, obtain an initial two-dimensional pixel compensation gain distribution model aiming at the light adjustable region according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table, and determine a two-dimensional pixel compensation gain distribution model aiming at a pixel compensation partition according to the initial two-dimensional pixel compensation gain distribution model.

In the embodiment of the application, the display device firstly predicts the initial temperature of each light adjustable region through the brightness signal of each light adjustable region to establish an initial two-dimensional temperature distribution model, and then corrects the initial two-dimensional temperature distribution model by utilizing the actual temperature signal obtained by the temperature sensor arranged in part of the light adjustable regions, so that more accurate temperature values in each light adjustable region can be obtained, and more accurate pixel compensation gains can be obtained.

Drawings

Fig. 1 is a schematic plan view of a display panel in a display device according to an embodiment of the present application;

Fig. 2 is a schematic plan view of a display panel in another display device according to an embodiment of the application;

fig. 3 is a schematic diagram of a display panel in a display device according to an embodiment of the application;

FIG. 4 is a schematic flow chart of a temperature-dependent compensation method of a display device according to an embodiment of the present application;

Fig. 5 is a schematic block diagram of a display device according to an embodiment of the present application;

Fig. 6 is a schematic block diagram of another display device according to an embodiment of the present application;

fig. 7 is a schematic block diagram of another display device according to an embodiment of the present application;

FIG. 8 is a schematic block diagram of a display device according to another embodiment of the present application;

fig. 9 is a schematic plan view of a display device according to an embodiment of the application;

Fig. 10 is a schematic plan view of a display device according to another embodiment of the application.

Detailed Description

The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application.

The embodiment of the application provides a temperature-dependent compensation method of a display device, which can be applied to various display devices with different display principles.

Fig. 1 is a schematic plan view of a display panel in a display device according to an embodiment of the present application, and fig. 2 is a schematic plan view of a display panel in another display device according to an embodiment of the present application.

As shown in fig. 1 and fig. 2, a display panel in a display device provided by an embodiment of the present application includes N light adjustable regions 01, where the light emitting brightness of each light adjustable region 01 is independently controllable. The N light adjustable regions 01 included in the display panel comprise M temperature detection regions 01a, wherein N is more than or equal to M, and M is more than or equal to 2. The actual temperature of each temperature detection region 01a can be detected by the temperature sensor 20, and thus, the temperature detection region 01a is a light adjustable region 01 in which the actual temperature in the display panel can be obtained.

At least one pixel 10 is disposed in the light adjustable region 01, so that the pixels 10 in each light adjustable region 01 can display images under the control of the light-emitting driving signal of the display device.

Fig. 3 is a schematic diagram of a display panel in a display device according to an embodiment of the application.

In one application scenario of the present application, as shown in fig. 3, the display device may be a passive light emitting display device, that is, a display panel in the display device includes a backlight 001 and a display screen 002. For example, the display screen 002 is a liquid crystal display screen, the backlight 001 can emit light to the display screen 002, and the display screen 002 can control the amount of light passing through the display screen 002, so that different gray scale display can be realized.

In one implementation, as shown in fig. 3, the backlight 001 includes a plurality of independently controllable dimming regions 010, that is, the brightness between different dimming regions 010 may be different, and when the light-emitting brightness of any two dimming regions 010 is different, the image display brightness of the two light-adjustable regions 01 corresponding to the light-emitting brightness is also different in the display panel. Therefore, in the present embodiment, the dimming area 010 in the backlight 001 is the light adjustable area 01 of the display panel. When a part of the light adjustable area 01 of the display panel needs to display a dark picture, the dimming area 010 in the backlight plate 001 can not emit light, so that the problem of light leakage is avoided, and the dark picture of the display device is darker; meanwhile, the dimming area 010 in the backlight 001 can emit different brightness according to the gray scale of the image displayed in the corresponding light adjustable area 01 in the display panel, so that the contrast ratio of the display device is improved.

Note that, each dimming area 010 in the backlight 001 is actually a projection of the light adjustable area 01 of the display panel on the backlight, that is, one light adjustable area 01 in the display panel and the corresponding dimming area 010 in the backlight 001 are the same area in the display device.

Further, the backlight plate 001 is a direct type backlight, and the backlight plate 001 can specifically use a plurality of mini-LEDs (LIGHT EMITTING diodes, LEDs) as light-emitting sources, so that the backlight driving of the mini-LEDs in different dimming areas 010 of the backlight plate 001 is independently controllable, so that the light-emitting brightness of each dimming area 010 is independently controllable.

In another implementation manner, the backlight 001 emits light uniformly over the entire surface, that is, the light emission brightness of the backlight 001 cannot be controlled in a partition manner, and since the display brightness of each pixel 10 in the display screen 002 is also independently controllable, the light adjustable region 01 of the display panel can be in one-to-one correspondence with the region where each pixel 10 in the display screen 002 is located, that is, the region where the pixel 10 in the display screen 002 is located is the light adjustable region 01 of the display panel.

In another application scenario of the present application, the display device may also be an active light emitting display device, for example, the display device may be an organic light emitting diode display device, a micro diode display device, that is, a display panel of the display device includes an active light emitting device, for example, an organic light emitting diode, a micro diode, etc.

In this application scenario, since the display brightness of each pixel 10 in the display panel is also independently controllable, the light adjustable region 01 of the display panel may correspond to the region where each pixel 10 of the display panel is located one by one, that is, the region where the pixel 10 in the display panel is located is the light adjustable region 01 of the display panel.

In addition, the display device provided by the application further comprises a temperature sensor 20, wherein the temperature sensor 20 is arranged in the temperature detection area 01a, and the temperature sensor 20 can sense the actual temperature in the temperature detection area 01a where the temperature sensor 20 is positioned.

In one implementation, the temperature sensor 20 may be disposed in or on a surface of the display panel in a thickness direction of the display device, for example, the temperature sensor 20 is disposed on a backlight 001 of the display panel within a dimming area 010 corresponding to the temperature detection area 01a, or on the display screen 002.

In another implementation, the temperature sensor 20 may also be disposed on a driving chip located at the back of the display panel in the thickness direction of the display device.

In the embodiment of the present application, the display panel further includes K pixel compensation regions 02, and at least one pixel 10 is included in the pixel compensation regions 02, wherein the pixel 10 includes at least a red light emitting sub-pixel 11, a green light emitting sub-pixel 12, and a blue light emitting sub-pixel 13. The same color light emitting sub-pixels within pixel compensation section 02 can achieve uniform light emission compensation gain.

It should be noted that, the light adjustable region 01 and the pixel compensation section 02 are not independent from each other, that is, there is an overlap between one pixel compensation section 02 and at least one light adjustable region 01 along the thickness direction of the display panel.

In one implementation, pixel compensation zone 02 covers at least one light adjustable region 01, i.e., 2.ltoreq.K.ltoreq.N. For example, as shown in FIG. 1, pixel compensation zone 02 covers a plurality of light adjustable regions 01; as shown in fig. 2, the pixel compensation section 02 covers a light adjustable region 01.

In another implementation, the light adjustable region 01 may also cover at least one pixel compensation zone 02, i.e., 2N K.

Fig. 4 is a schematic flow chart of a temperature-dependent compensation method of a display device according to an embodiment of the present application.

Referring to fig. 1, fig. 2 and fig. 4, a temperature-dependent compensation method for a display device according to an embodiment of the application includes:

step S01: establishing an initial two-dimensional temperature distribution model of the display device according to the brightness signals of each light adjustable region 01;

step S02: correcting the initial two-dimensional temperature distribution model according to the temperature signals received by the temperature sensors 20 in the temperature detection areas 01a to obtain a two-dimensional temperature distribution model of the display device;

Step S03: obtaining an initial two-dimensional pixel compensation gain distribution model aiming at the light adjustable region 01 according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table;

Step S04: a two-dimensional pixel compensation gain distribution model for the pixel compensation section 02 is determined from the initial two-dimensional pixel compensation gain distribution model.

In the embodiment of the application, the initial temperature of each light adjustable region 01 is estimated by the brightness signal of each light adjustable region 01, an initial two-dimensional temperature distribution model is established, and the actual temperature signal obtained by the temperature sensor 20 arranged in part of the light adjustable regions 01 is used for correcting the initial two-dimensional temperature distribution model, so that more accurate temperature values in each light adjustable region 01 can be obtained, and more accurate pixel compensation gain can be obtained.

In the embodiment of the present application, the specific steps of establishing the initial two-dimensional temperature distribution model of the display device according to the brightness signal of each light adjustable region 01 may include:

S11: the brightness signal L _i,n of the light-adjustable region 01 at the i-th time is recorded at the n-position. Wherein the set of the first L moments closest to the current moment is U, i epsilon U; the position set of the N light adjustable areas 01 is V, N is E V;

S12: and (3) carrying out weighted summation on the brightness signals L _i,n and T '_n＝f(∑_i∈U w_i*L_i,n in a time domain to obtain an initial temperature estimated value T' _n of the light adjustable region 01 at the n position, namely obtaining an initial two-dimensional temperature distribution model of the display device. Wherein w _i is the influence coefficient of the time variable on the luminance signal L _i,n, and the accumulated statistical value of the period of time can be obtained through testing, and the influence of w _i corresponding to the time which is generally closer to the current time on the luminance signal L _i,n is larger.

For example, as illustrated in fig. 2, the set v= { (1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3) }, L _i,(1,2) is the luminance signal of the light-tunable region 01 at the (1, 2) position at the i-th time, and T' _(1,2) is the initial temperature estimated value of the light-tunable region 01 at the (1, 2) position.

In this embodiment, the luminance signal is the luminance value of each light adjustable region 01, and the luminance signal can be determined by the driving signal when each light adjustable region 01 displays an image. For example, the luminance signal may be obtained by directly obtaining, by a driving chip, a driving signal for controlling each light adjustable region 01 to display an image, and determining the luminance signal according to the driving signal; or a current feedback device corresponding to each light adjustable region 01 is added in the display device, the current feedback device can reflect the corresponding current when each light adjustable region 01 displays images, and the current of the current feedback device can be used as a driving signal of each light adjustable region 01, and the brightness signal can be determined according to the luminous driving signal.

When the display panel of the display device includes a backlight 001 and the dimming area 010 of the backlight 001 is a light adjustable area 01 of the display panel, the brightness signal is the backlight brightness emitted by each dimming area 010 of the backlight 001, and the brightness signal L _i,n is the brightness of the backlight emitted by the dimming area 010 at the n-position of the backlight 001 at the i-th moment.

In one implementation, the specific luminance signal L _i,n may be a backlight driving signal of the backlight plate 001, and the luminance signal corresponding to each dimming area 010 may be obtained by directly obtaining a backlight driving signal required by each dimming area 010 of the backlight plate 001 to emit backlight when the display device displays an image, and processing the backlight driving signal in each dimming area 010, that is, obtaining the luminance signal of each light adjustable area 01 of the display panel.

In another implementation manner, current feedback devices corresponding to the dimming areas 010 of the backlight 001 are provided, feedback currents of the current feedback devices corresponding to the dimming areas 010 of the backlight 001 when the display device displays images are obtained, and brightness signals corresponding to the dimming areas 010 can be obtained by processing the feedback currents of the dimming areas 010, that is, brightness signals of the light adjustable areas 01 of the display panel are obtained.

In yet another implementation, the luminance signal L _i,n may be specifically a light-emitting driving signal for driving each pixel 10 of the display panel to perform image display. The light-emitting driving signals of the light adjustable areas 01 of the display screen 002 when the display device displays images are obtained, the backlight driving signals of the dimming areas 010 corresponding to the light adjustable areas 01 in the backlight plate 001 are estimated according to the light-emitting driving signals, and the backlight driving signals in the dimming areas 010 are processed to obtain the brightness signals corresponding to the dimming areas 010.

One specific way of estimating the backlight driving signal of each dimming area 010 corresponding to each light-adjustable area 01 in the backlight plate 001 according to the light-emitting driving signal is to approximate the backlight driving signal of the dimming area 010 corresponding to the light-adjustable area 01 according to the y-th power of the ratio of the gray-scale value larger than a certain percentage threshold value in the gray-scale value of the image displayed by the light-adjustable area 01 to the maximum gray-scale value of the image displayed by the light-adjustable area 01. Where y is a gamma (gamma value) of the display device, and may specifically be y=2.2.

When the areas where the pixels 10 are located in the display panel of the display device are the light adjustable areas 01 of the display panel, the luminance signal is the display luminance when the pixels 10 perform image display, and the luminance signal L _i,n is the display luminance of the pixel 10 at the n-position of the display panel at the i-th time.

In one implementation manner, the luminance signal L _i,n may be specifically a light-emitting driving signal for driving each pixel 10 of the display panel to perform image display, and the luminance signal corresponding to each pixel 10 may be obtained by directly obtaining the light-emitting driving signal required by each pixel 10 of the display panel when the display device displays an image, and processing the light-emitting driving signal in each pixel 10, that is, obtaining the luminance signal of each light-adjustable region 01 of the display panel.

In another implementation manner, current feedback devices corresponding to the pixels 10 are provided, feedback currents of the current feedback devices corresponding to the pixels 10 of the display panel when the display device displays images are obtained, and the feedback currents of the pixels 10 are processed to obtain brightness signals corresponding to the pixels 10, that is, brightness signals of the light adjustable regions 01 of the display panel.

In the technical scheme of the application, the main heat source in the display device is a light-emitting structure, such as a backlight source in a liquid crystal display panel, a light-emitting device in an organic light-emitting diode display device and the like, so that the brightness signal of each light adjustable region 01 can directly and effectively reflect the temperature of each light adjustable region 01. The estimated temperature value of each light adjustable region 01 can be obtained through an initial two-dimensional temperature distribution model established by the brightness signal of each light adjustable region 01.

The specific steps of correcting the initial two-dimensional temperature distribution model according to the temperature signals received by the temperature sensors 20 in the respective temperature detection areas 01a to obtain the two-dimensional temperature distribution model of the display device may include:

s21: the temperature signal T "_m received by the temperature sensor 20 in the temperature detection region 01a at the m position is recorded. Wherein, M is W, W is the set of the positions of M temperature detection areas 01a in N light adjustable areas 01;

S22: the temperature correction weight T _a is determined from the temperature signal T "_m of the temperature detection region 01a and the initial temperature estimated value T' _m. Wherein T' _m ε S, S is the set of initial temperature estimates of M temperature detection regions 01 a;

S23: and correcting the initial temperature estimated value T' _n of the light adjustable region 01 at the n position according to the temperature correction weight T _a to obtain the temperature estimated value T _n of the light adjustable region 01 at the n position, and thus obtaining the two-dimensional temperature distribution model of the display device.

Wherein, since the M temperature detection regions 01a are M light adjustable regions 01 provided with the temperature sensor 20 among the N light adjustable regions 01, respectively, thenFor example, as illustrated in fig. 2, the set v= { (1, 1), (1, 2), (1, 3), (2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3) }, the set w= { (1, 1), (1, 3), (2, 2), (3, 1), (3, 3) } of the positions of the M temperature detection regions 01a, that is, the light adjustable regions 01 at the positions of (1, 1), (1, 3), (2, 2), (3, 1), (3, 3) in the N light adjustable regions 01 are the temperature detection regions 01a.

The temperature signal T "_m and the initial temperature estimated value T' _m are the temperature signal obtained by the temperature sensor 20 in the temperature detection area 01a and the initial temperature estimated value determined according to the brightness signal, respectively. For example, T "_(1,1) and T" _(1,1) are the initial temperature estimate and temperature signal of the light adjustable region 01 at the (1, 1) position, T "_(1,3) and T" _(1,3) are the initial temperature estimate and temperature signal of the light adjustable region 01 at the (1, 3) position, T "_(2,2) and T" _(2,2) are the initial temperature estimate and temperature signal of the light adjustable region 01 at the (2, 2) position, T "_(3,1) and T" _(3,1) are the initial temperature estimate and temperature signal of the light adjustable region 01 at the (3, 1) position, T "_(3,3) and T" _(3,3) are the initial temperature estimate and temperature signal of the light adjustable region 01 at the (3, 3) position, respectively.

In one implementation of the present embodiment, the temperature correction weight T _a is an average temperature correction weight determined by the temperature signal T "_m of each temperature detection zone 01a and the initial temperature estimate T' _m, for example,The initial temperature estimated values T '_n of the light-tunable regions 01 at the respective positions may be corrected by the average temperature correction weight, and the initial temperature estimated values T' _n of the light-tunable regions 01 other than the M temperature detection regions 01a may be corrected by the average temperature correction weight.

The specific way to correct and correct the initial temperature estimated value T' _n of the light adjustable region 01 at the n position by the temperature correction weight T _a may be T _n＝T′_n*T_a.

In the technical scheme of the application, the temperature of the light adjustable region 01 without the temperature sensor 20 is corrected by the temperature correction weight obtained by the initial temperature estimated value and the actual temperature value of the light adjustable region 01 where the temperature sensor 20 is positioned, so that a basis can be provided for obtaining the compensation gains of all the light adjustable regions 01.

In the embodiment of the application, according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table, an initial two-dimensional pixel compensation gain distribution model for the light adjustable region 01 is obtained, that is, an initial pixel compensation gain LG (T _n) in the light adjustable region 01 at n positions in the display device is determined, that is, the initial pixel compensation gains in each light adjustable region 01 in the display device are determined.

The pixel compensation gain is a gain that can compensate for the brightness of the pixel 10 of the display panel. For example, when the display panel is a liquid crystal display panel including the backlight 001, the pixel compensation gain is a compensation gain of a light emission drive signal that controls the deflection of liquid crystal molecules in the liquid crystal display panel 002.

In an embodiment of the present application, according to the initial two-dimensional pixel compensation gain distribution model, the specific step of determining the two-dimensional pixel compensation gain distribution model for the pixel compensation partition 02 may include:

s41: according to the initial two-dimensional pixel compensation gain distribution model, determining the initial pixel compensation gains of the light adjustable region 01 covered by the pixel compensation zone 02 at the k position and at least two light adjustable regions 01 adjacent to the pixel compensation zone 02 at the k position. The position set of the K pixel compensation subareas 02 is Z, and K is E Z;

S42: and performing spatial filtering on the light adjustable region 01 covered by the pixel compensation partition 02 at the k position and the initial pixel compensation gains of at least two light adjustable regions 01 adjacent to the pixel compensation partition 02 at the k position, namely LG _k＝∑_j∈xw_j*LG(T_j to obtain a pixel compensation gain LG _k at the k position, namely determining a two-dimensional pixel compensation gain distribution model for the pixel compensation partition 02. Wherein LG (T _j) epsilon X, X is the set of the light adjustable region 01 covered by the pixel compensation partition 02 at the k position and the initial pixel compensation gains of at least two light adjustable regions 01 adjacent to the pixel compensation partition 02 at the k position; w _j is the weight coefficient of the spatial position.

When one light adjustable region 01 covers at least two pixel compensation sections 02, then the pixel compensation gains LG _k corresponding to all the pixel compensation sections 02 covered by the light adjustable region 01 are the same. Then the set X of initial pixel compensation gains corresponding to all pixel compensation partitions 02 covered by one ray tunable region 01 is the same when spatial filtering is performed.

When the pixel compensation partition 02 covers at least two light adjustable regions 01, the pixel compensation gain corresponding to the pixel compensation partition 02 is an average value of a plurality of pixel compensation gains obtained according to the initial pixel compensation gains corresponding to the light adjustable regions 01 covered by the pixel compensation partition 02.

In one implementation of this embodiment, X may be the set of the ray tunable region 01 covered by the pixel compensation partition 02 at the k-position and the initial pixel compensation gains adjacent to the pixel compensation partition 02 at the k-position and surrounding all the ray tunable regions 01 of the pixel compensation partition 02 at the k-position.

It will be appreciated that the pixel compensation gains corresponding to the pixels 10 in each pixel compensation partition 02 are the same, and the pixel compensation gains corresponding to the pixels 10 may include compensation gains for the pixels 10 of different colors, that is, LG _k＝(R_k,G_k,B_k), where R _k、G_k、B_k is the compensation gain for the red light-emitting sub-pixel 11, the green light-emitting sub-pixel 12, and the blue light-emitting sub-pixel 13 in the pixel compensation partition 02 at the k position, respectively. For example, the compensation gains of the red light emitting sub-pixel 11, the green light emitting sub-pixel 12, and the blue light emitting sub-pixel 13 in the pixel 10 may be different, but the compensation gain of the red light emitting sub-pixel 11, the compensation gain of the green light emitting sub-pixel 12, and the compensation gain of the blue light emitting sub-pixel 13 in the same pixel compensation division 02 are the same.

The problem of obvious brightness display difference after compensation of the display device caused by larger compensation gain difference of the adjacent pixel compensation partition 02 can be avoided by performing spatial filtering on the initial two-dimensional pixel compensation gain distribution model.

The embodiment of the application also provides a display device, and the display device provided by the embodiment of the application can adopt the temperature-dependent pixel compensation method provided by any one of the embodiments to carry out temperature-dependent pixel compensation in the display process.

Fig. 5 is a schematic block diagram of a display device according to an embodiment of the application.

As shown in fig. 5, the display device provided by the embodiment of the application includes a display panel 0001, a driving chip 0002 and a temperature sensor 0003, wherein the driving chip 0002 includes a temperature-following compensation module 00021 and a driving unit 00022, and the temperature sensor 0003 is disposed in at least part of a light adjustable region 01 of the display panel and the light adjustable region 01 with the temperature 0002 is referred to as a temperature detection region 01a. The schematic plan view of the display device provided in this embodiment may be as shown in fig. 1 or fig. 2.

The driving unit 00022 in the driving chip 0002 is used for driving the display panel 0001 to display images, and the temperature-dependent compensation module 00021 is used for obtaining compensation gains of each pixel compensation partition 02 of the display panel 0001 according to brightness signals of the image display of the display panel 0001 and actual temperatures obtained by the sensor, so that the light emission compensation during the image display of the display panel is realized through the driving unit 00022.

The process of obtaining the compensation gains of the different pixel compensation areas 02 of the display panel 0001 by the temperature compensation module 00021 comprises the following steps:

Acquiring brightness signals of the light adjustable regions 01 of the display panel 0001 from the driving unit 00022, and establishing an initial two-dimensional temperature distribution model of the display device;

Acquiring temperature signals from temperature sensors 20 arranged in each temperature detection area 01a of the display panel, and correcting the initial two-dimensional temperature distribution model to obtain a two-dimensional temperature distribution model of the display device;

Obtaining an initial two-dimensional pixel compensation gain distribution model aiming at a light adjustable region 01 of a display panel 0001 according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table;

A two-dimensional pixel compensation gain distribution model for the pixel compensation section 02 of the display panel 0001 is determined from the initial two-dimensional pixel compensation gain distribution model.

The driving chip 0002 is used for respectively performing brightness compensation on the pixels 10 in the pixel compensation partition 02 of the display panel 001 according to the two-dimensional pixel compensation gain distribution model calculated by the temperature following compensation module 00021.

Fig. 6 is a schematic block diagram of another display device according to an embodiment of the present application, fig. 7 is a schematic block diagram of another display device according to an embodiment of the present application, and fig. 8 is a schematic block diagram of another display device according to an embodiment of the present application.

The temperature-dependent compensation module 00021 shown in fig. 6-8 includes a compensation gain determination module 21a and a pixel compensation module 21b, wherein the compensation gain determination module 21a is configured to determine a two-dimensional pixel compensation gain distribution model for the pixel compensation partition 02 of the display panel 0001; the pixel compensation module 21b is configured to send the light emission compensation gain signal to the driving unit 00022 according to the two-dimensional pixel compensation gain distribution model.

In one embodiment of the present application, the driving unit 00022 includes a display screen driving unit 22a and a backlight driving unit 22b, wherein the display screen driving unit 22a is used to control the display screen 002 to display, and the backlight driving unit 22b is used to control the backlight 001 to emit backlight to the display screen 002. In addition, the driving chip 0002 further includes a partition dimming module 0023, and the partition dimming module 0023 can control the backlight brightness of each dimming area 010 of the backlight 001 through the backlight driving unit 22b, respectively. In an alternative manner, the partition dimming module 0023 may also calculate a compensation gain for the display screen 002 according to the brightness of each dimming area 010 in the backlight 001, and perform lighting compensation for the display screen 002 through the display screen driving unit 22 a.

In this embodiment, each dimming region 010 in the backlight 001 can be used as each light adjustable region 01 of the display panel 0001, and the backlight brightness emitted by each dimming region 010 in the backlight 001 can be used as the brightness signal of the display panel. Then, the temperature-dependent compensation module 00021 acquires the luminance signals of the respective light adjustable regions 01 of the display panel 0001 from the driving unit 00022, that is, the temperature-dependent compensation module 00021 acquires the backlight luminance signals of the respective dimming regions 010 of the backlight panel 001 from the driving unit 00022.

In one implementation of the present embodiment, as shown in fig. 6, the temperature-dependent compensation module 00021 may obtain the backlight brightness values of the dimming areas 010 of the backlight 001 through the zone dimming module 0023. Specifically, the partition dimming module 0023 obtains the backlight driving signals of the dimming areas 010 of the backlight 001 from the backlight driving unit 22b, and processes the backlight driving signals in the dimming areas 010 to obtain the luminance signals corresponding to the dimming areas 010; the zone dimming module 0023 then transmits the obtained luminance signal to the compensation gain determining module 21a of the temperature dependent compensation module 00021; the compensation gain determination module 21a builds an initial two-dimensional temperature distribution model of the display device from the received luminance signal.

In another implementation of the present embodiment, as shown in fig. 7 and 8, the temperature-dependent compensation module 00021 may obtain the backlight brightness signals of the dimming areas 010 of the backlight 001 from the driving unit 00022.

In a specific implementation manner, as shown in fig. 7, the compensation gain determining module 21a of the temperature-dependent compensation module 00021 obtains the backlight driving signals of the dimming areas 010 of the backlight 001 from the backlight driving unit 22b, processes the backlight driving signals in the dimming areas 010 to obtain the brightness signals corresponding to the dimming areas 010, and then establishes an initial two-dimensional temperature distribution model of the display device.

In another specific implementation manner, as shown in fig. 8, the compensation gain determining module 0021 of the temperature-dependent compensation module 00021 obtains the light-emitting driving signals of the light adjustable regions 01 of the display screen 002 from the display screen driving unit 22a, predicts the backlight driving signals of the dimming regions 010 of the backlight plate 001 according to the light-emitting driving signals, processes the backlight driving signals in the dimming regions 010 to obtain the brightness signals corresponding to the dimming regions 010, and then establishes an initial two-dimensional temperature distribution model of the display device.

Fig. 9 is a schematic plan view of a display device according to an embodiment of the application, and fig. 10 is a schematic plan view of a display device according to another embodiment of the application.

As shown in fig. 9 and 10, the display device provided in this embodiment includes a display panel including a backlight 001 and a display 002. The display panel in the display device provided by the embodiment of the application comprises N light adjustable regions 01, wherein at least one pixel 10 is arranged in each light adjustable region 01, and the luminous brightness of each light adjustable region 01 is independently controllable. The display panel further comprises K pixel compensation areas 02, wherein the pixel compensation areas 02 comprise at least one pixel 10, and the pixel 10 at least comprises a red light emitting sub-pixel 11, a green light emitting sub-pixel 12 and a blue light emitting sub-pixel 13. The same color light emitting sub-pixels within pixel compensation section 02 can achieve uniform light emission compensation gain. Note that, the light adjustable region 01 and the pixel compensation section 02 are not regions separated from each other independently. In one implementation, as shown in FIG. 9, pixel compensation zone 02 covers a plurality of light adjustable regions 01; in another implementation, as shown in FIG. 10, the pixel compensation section 02 covers a light adjustable region 01. Namely, K is more than or equal to 2 and N is more than or equal to N.

The display screen 002 can be a liquid crystal display screen, and the backlight plate 001 can emit light to the display screen 002, and the display screen 002 can control the quantity of light passing through the display screen 002, so that different gray scale display can be realized.

The backlight 001 includes a plurality of independently controllable dimming areas 010, where each dimming area 010 is independently controllable, that is, the brightness between each dimming area 010 may be different, and when the light-emitting brightness of any two dimming areas 010 is different, the image display brightness of the two light-adjustable areas 01 corresponding to any two dimming areas 010 in the display panel is also different.

Therefore, in the present embodiment, the dimming area 010 in the backlight 001 is the light adjustable area 01 of the display panel. When a part of the light adjustable area 01 of the display panel needs to display a dark picture, the dimming area 010 in the backlight plate 001 can not emit light, so that the problem of light leakage is avoided, and the dark picture of the display device is darker; meanwhile, the dimming area 010 in the backlight 001 can emit different brightness according to the gray scale of the image displayed in the corresponding light adjustable area 01 in the display panel, so that the contrast ratio of the display device is improved. Note that, each dimming area 010 in the backlight 001 is actually a projection of the light adjustable area 01 of the display panel on the backlight, that is, one light adjustable area 01 in the display panel and the corresponding dimming area 010 in the backlight 001 are the same area in the display device.

In the display device provided in the present embodiment, each light adjustable region 01 of the display panel 0001 is provided with the temperature sensor 20. The display device can establish a two-dimensional temperature distribution model of the display device according to the temperature signals of the temperature sensors 20 in the light adjustable areas 01; according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table, an initial two-dimensional pixel compensation gain distribution model aiming at the light adjustable region 01 is obtained; and a two-dimensional pixel compensation gain distribution model for the pixel compensation section 02 is determined from the initial two-dimensional pixel compensation gain distribution model.

The process of obtaining the initial two-dimensional pixel compensation gain distribution model for the light adjustable region 01 and determining the two-dimensional pixel compensation gain distribution model for the pixel compensation partition 02 is the same as the method provided in any one of the above embodiments, and will not be described herein.

In this embodiment, the accurate temperature value of each light adjustable region 01 can be obtained, so that the accurate light emission compensation gain of each light adjustable region 01 can be obtained, and the temperature-dependent light emission compensation effect is excellent.

The foregoing is merely exemplary embodiments of the present application, and any person skilled in the art may easily conceive of changes or substitutions within the technical scope of the present application, which should be covered by the present application. The protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A temperature-dependent compensation method of a display device is characterized in that the display device comprises a display panel;

The display panel comprises N light adjustable areas, wherein the N light adjustable areas comprise M temperature detection areas, and each area of the display device corresponding to the temperature detection areas is provided with a temperature sensor, wherein N is more than or equal to M, and M is more than or equal to 2;

the display panel further comprises K pixel compensation subareas, and one pixel compensation subarea is overlapped with at least one light adjustable area along the thickness direction of the display panel, wherein K is more than or equal to 2;

The temperature-dependent compensation method comprises the following steps:

Respectively establishing N initial two-dimensional temperature distribution models corresponding to the light adjustable areas according to the brightness signals of the N light adjustable areas;

correcting the N initial two-dimensional temperature distribution models according to the temperature signals received by the temperature sensors in the M temperature detection areas to obtain two-dimensional temperature distribution models corresponding to each light adjustable area;

obtaining an initial two-dimensional pixel compensation gain distribution model corresponding to the light adjustable region according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table;

and determining a two-dimensional pixel compensation gain distribution model corresponding to the pixel compensation partition according to the initial two-dimensional pixel compensation gain distribution model.

2. The temperature-dependent compensation method of claim 1, wherein said modeling an initial two-dimensional temperature distribution of said display device based on the luminance signal of each of said light-tunable regions comprises:

Recording a brightness signal L _i,n of the light adjustable region at the n position at the i-th moment; wherein the set of the first L moments closest to the current moment is U, i epsilon U; the position set of the N light adjustable areas is V, and N is E V;

Weighting and summing the brightness signals L _i,n and T '_n＝f(∑_i∈U w_i*L_i,n in a time domain to obtain an initial temperature estimated value T' _n of the light adjustable region at the n position; where w _i is an influence coefficient of the time variable on the luminance signal L _i,n.

3. The temperature dependent compensation method of claim 2, wherein the display panel comprises a backlight including a plurality of independently controllable dimming regions, the light adjustable region of the display panel being the dimming region;

The brightness signal is the brightness of the backlight emitted by each dimming area of the backlight plate.

4. The temperature dependent compensation method of claim 2, wherein the display panel comprises a plurality of pixels, and the light adjustable region of the display panel is a region in which the pixels are located;

the luminance signal is display luminance when each of the pixels displays an image.

5. The temperature-dependent compensation method according to claim 2, wherein said correcting the initial two-dimensional temperature distribution model based on the temperature signals received by the temperature sensors in the respective temperature detection areas to obtain the two-dimensional temperature distribution model of the display device comprises:

Recording a temperature signal T "_m received by the temperature sensor in the temperature detection region at m-position; wherein M is W, W is a set of positions of the M temperature detection areas in N light adjustable areas;

Determining a temperature correction weight T _a according to the temperature signal T '_m of the temperature detection region and an initial temperature estimated value T' _m; wherein T' _m ε S, S is the set of the initial temperature estimates for the M temperature detection regions;

And correcting the initial temperature estimated value T' _n of the light adjustable region at the n position according to the temperature correction weight T _a to obtain a temperature estimated value T _n of the light adjustable region at the n position.

6. The temperature-dependent compensation method of claim 5, wherein obtaining an initial two-dimensional pixel compensation gain distribution model for the light adjustable region according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table comprises:

And determining an initial pixel compensation gain LG (T _n) of the light adjustable region at the n position according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table.

7. The temperature-dependent compensation method of claim 6, wherein determining a two-dimensional pixel compensation gain distribution model for the pixel compensation zone from the initial two-dimensional pixel compensation gain distribution model comprises:

Determining the initial pixel compensation gains of the light adjustable region covered by the pixel compensation partition at the k position and at least two light adjustable regions adjacent to the pixel compensation partition at the k position according to the initial two-dimensional pixel compensation gain distribution model; the position set of the K pixel compensation partitions is Z, and K is Z;

Spatially filtering the initial pixel compensation gains of the light adjustable region covered by the pixel compensation partition at the k position and the at least two light adjustable regions adjacent to the pixel compensation partition at the k position, LG _k＝∑_j∈Xw_j*LG(T_j, to obtain a pixel compensation gain LG _k at the k position; wherein LG (T _j) ∈x, X is the set of the initial pixel compensation gains of the light adjustable region covered by the pixel compensation partition at the k position and at least the two light adjustable regions adjacent to the pixel compensation partition at the k position; w _j is the weight coefficient of the spatial position.

8. The temperature-dependent compensation method of claim 7, wherein X is a set of the ray tunable region covered by the pixel compensation partition at the k-position and the initial pixel compensation gains of all the ray tunable regions adjacent to and surrounding the pixel compensation partition at the k-position.

9. A display device, wherein the display device can use the temperature-dependent compensation method provided in any one of claims 1 to 8 to perform temperature-dependent pixel compensation during display, the display device comprising:

a display panel including N light adjustable regions and K pixel compensation partitions; the N light adjustable areas comprise M temperature detection areas, and one pixel compensation partition overlaps at least one light adjustable area along the thickness direction of the display panel; wherein N is more than or equal to M, M is more than or equal to 2,K and more than or equal to 2;

The driving chip comprises a temperature-dependent compensation module and a driving unit, and the driving unit is used for driving the display panel to display images;

A temperature sensor provided in an area of the display device corresponding to the temperature detection area;

the temperature-dependent compensation module obtains compensation gains for each pixel compensation partition of the display panel according to the brightness signal of the display panel and the temperature signal acquired by the sensor, and the specific process comprises the following steps:

Acquiring the brightness signals of the N light adjustable areas of the display panel from the driving unit, and respectively establishing N initial two-dimensional temperature distribution models corresponding to the light adjustable areas;

acquiring temperature signals from the temperature sensors arranged in the M temperature detection areas of the display panel, and correcting the N initial two-dimensional temperature distribution models to obtain two-dimensional temperature distribution models corresponding to each light adjustable area;

Obtaining an initial two-dimensional pixel compensation gain distribution model corresponding to the light adjustable region of the display panel according to the two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table;

And determining a two-dimensional pixel compensation gain distribution model of the pixel compensation partition of the display panel according to the initial two-dimensional pixel compensation gain distribution model.

10. The display device of claim 9, wherein the display device comprises a display device,

The display panel comprises a backlight plate and a display screen, and the backlight plate emits backlight to the display screen; the backlight panel comprises a dimming area which is used as the light adjustable area of the display panel; the backlight brightness emitted by the dimming area in the backlight plate is used as the brightness signal of the display panel;

The driving unit comprises a display screen driving unit and a backlight driving unit, wherein the display screen driving unit is used for controlling the display screen to display, and the backlight plate driving unit is used for controlling the backlight plate to emit backlight to the display screen;

The driving chip further comprises a partition dimming module, and the partition dimming module respectively controls the backlight brightness of each dimming area through the backlight plate driving unit.

11. The display device according to claim 10, wherein the acquiring the luminance signal of each of the light adjustable regions of the display panel from the driving unit includes:

The partition dimming module acquires backlight driving signals of the dimming areas in the backlight plate from the backlight driving unit, and processes the backlight driving signals of the dimming areas to obtain the brightness signals corresponding to the dimming areas;

and the regional dimming module transmits the obtained brightness signal to the temperature-dependent compensation module.

12. The display device according to claim 10, wherein the acquiring the luminance signal of each of the light adjustable regions of the display panel from the driving unit includes:

the temperature-dependent compensation module acquires backlight driving signals of all dimming areas in the backlight plate from the backlight plate driving unit, and processes the backlight driving signals of all the dimming areas to obtain the brightness signals corresponding to all the dimming areas.

13. The display device according to claim 10, wherein the acquiring the luminance signal of each of the light adjustable regions of the display panel from the driving unit includes:

the temperature-dependent compensation module acquires light-emitting driving signals of the light adjustable areas of the display screen from the display screen driving unit, predicts backlight driving signals of the dimming areas of the backlight plate according to the light-emitting driving signals, and processes the backlight driving signals in the dimming areas to obtain brightness signals corresponding to the dimming areas.

14. A display device, characterized in that the display device comprises: a display panel including N light adjustable regions and K pixel compensation partitions; along the thickness direction of the display panel, one pixel compensation partition is overlapped with at least one light adjustable area; temperature sensors are arranged in the light adjustable areas, wherein K is more than or equal to 2 and N is more than or equal to 2;

The display device can respectively establish a two-dimensional temperature distribution model corresponding to the light adjustable region according to the temperature signals of the temperature sensors in the N light adjustable regions; obtaining an initial two-dimensional pixel compensation gain distribution model corresponding to the light adjustable region according to a two-dimensional temperature distribution model and a preset temperature-pixel compensation gain lookup table; and determining a two-dimensional pixel compensation gain distribution model corresponding to the pixel compensation partition according to the initial two-dimensional pixel compensation gain distribution model.