Display module and control method of display module

Abstract

The invention provides a display module and a control method of the display module, and belongs to the technical field of display. The display module comprises a display panel and a backlight module; the display panel comprises a display area, the display area comprises a plurality of sub-pixels arranged in an array mode, the backlight module comprises a plurality of light-emitting units, each light-emitting unit comprises a plurality of light-emitting elements emitting monochromatic light of different colors, and the positions, corresponding to the display panel, of the light-emitting units are the adjacent sub-pixels; the plurality of light-emitting elements are configured to be lightened in a time-sharing manner; wherein when a first light-emitting element in the light-emitting unit is lightened, the total area occupied by sub-pixels in a light-transmitting state in a target display area of the display area is larger than the total area occupied by sub-pixels in the light-transmitting state when a second light-emitting element is lightened; the sub-pixels in the target display area correspond to the same display color, monochromatic light emitted by the first light-emitting element is different from monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element except the first light-emitting element in the light-emitting unit.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display module and a control method of the display module. Background Art

[0002] Currently, methods for liquid crystal display devices to achieve color display are divided into red (R), green (G), blue (B) filter layer display method and field sequential display method.

[0003] Among them, the liquid crystal display device using field sequential display is also called a field sequential display module. In the field sequential display module, the backlight source of the display module includes three primary color lamp groups, such as red lamp, green lamp and blue lamp, which respectively control the three primary color lamp groups to emit three primary color lights in parallel. The liquid crystal screen controls the color and brightness of the transmitted light according to the displayed information to achieve temporal additive color mixing, thereby utilizing the visual persistence characteristics of the human eye to synthesize a color image. Summary of the invention

[0004] In a first aspect of the present disclosure, a display module is provided, comprising a display panel and a backlight module for providing a backlight source for the display panel;

[0005] The display panel comprises a display area, and the display area comprises a plurality of sub-pixels arranged in an array;

[0006] The backlight module includes a plurality of light-emitting units, each of which includes a plurality of light-emitting elements that emit monochromatic light of different colors, and the light-emitting units correspond to a plurality of adjacent sub-pixels at positions on the display panel; the plurality of light-emitting elements are configured to light up in time-sharing manner;

[0007] Among them, when the first light-emitting element in the light-emitting unit is illuminated, the total area occupied by the sub-pixels in the target display area of ​​the display area that are in a light-transmitting state is greater than the total area occupied by the sub-pixels in the light-transmitting state when the second light-emitting element is illuminated; the sub-pixels in the target display area correspond to the same display color, the monochromatic light emitted by the first light-emitting element is different from the monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element in the light-emitting unit except the first light-emitting element.

[0008] Exemplarily, the plurality of light-emitting elements include a green light-emitting element, a red light-emitting element and a blue light-emitting element, and the first light-emitting element is the green light-emitting element.

[0009] Exemplarily, when the first light emitting element is turned on, the number of sub-pixels in the target display area that are in a light-transmitting state is greater than the number of sub-pixels in a light-transmitting state when the second light emitting element is turned on.

[0010] Exemplarily, the plurality of light emitting elements include a green light emitting element, a red light emitting element and a blue light emitting element; the first light emitting element is the green light emitting element;

[0011] Among them, when the blue light emitting element is lit, the number of sub-pixels in the target display area that are in a light-transmitting state is equal to the number of sub-pixels in a light-transmitting state when the red light emitting element is lit.

[0012] Exemplarily, some sub-pixels in the target display area that are in a light-transmitting state when the first light-emitting element is turned on are also in a light-transmitting state when the second light-emitting element is turned on.

[0013] Exemplarily, when the first light emitting element is lit, the sub-pixels in the target display area that are in a light-transmitting state are different from the sub-pixels that are in a light-transmitting state when the second light emitting element is lit.

[0014] Exemplarily, the plurality of light emitting elements include a green light emitting element, a red light emitting element and a blue light emitting element; the first light emitting element is the green light emitting element;

[0015] When the green light emitting element is lit, a plurality of first sub-pixels in the target display area are in a light-transmitting state; when the blue light emitting element is lit, a plurality of second sub-pixels in the target display area are in a light-transmitting state; when the red light emitting element is lit, a plurality of third sub-pixels in the target display area are in a light-transmitting state;

[0016] The first sub-pixels, the second sub-pixels and the third sub-pixels are arranged periodically; and in one arrangement period, the number of the first sub-pixels is greater than the number of the second sub-pixels and the third sub-pixels.

[0017] Exemplarily, when the first light-emitting element is lit, the aperture ratio of a single sub-pixel in the target display area that is in a light-transmitting state is greater than the aperture ratio of a single sub-pixel in a light-transmitting state when the second light-emitting element is lit.

[0018] Exemplarily, the plurality of sub-pixels include: a fourth sub-pixel, a fifth sub-pixel and a sixth sub-pixel;

[0019] The fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel are periodically arranged in the display area, and the fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel correspond to different aperture ratios;

[0020] When the first light-emitting element is turned on, the sub-pixel with the largest aperture ratio among the fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel is in the light-transmitting state.

[0021] Exemplarily, when the first light emitting element is lit, the number of sub-pixels in the target display area that are in a light-transmitting state is equal to the number of sub-pixels in a light-transmitting state when the second light emitting element is lit.

[0022] A second aspect of the present disclosure provides a method for controlling a display module, which is used to control the display module described in any embodiment of the first aspect, including:

[0023] Determine a target display area in the picture to be displayed, where each sub-pixel in the target display area has the same display color;

[0024] Splitting the display data of the display screen of the target display area into a plurality of sub-display data, each of the sub-display data corresponds to a color component in the display screen, and different color components correspond to light-emitting elements of different colors in the light-emitting unit;

[0025] For each sub-display data, after controlling part of the sub-pixels in the target display area to be in a light-transmitting state, control the light-emitting element corresponding to the sub-display data to light up;

[0026] In which, when the first light-emitting element in the light-emitting unit is illuminated, the total area occupied by the sub-pixels in the light-transmitting state in the target display area is greater than the total area occupied by the sub-pixels in the light-transmitting state when the second light-emitting element is illuminated, the monochromatic light emitted by the first light-emitting element is different from the monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element in the light-emitting unit except the first light-emitting element.

[0027] Exemplarily, for each sub-display data, controlling part of the sub-pixels in the target display area to be in a light-transmitting state includes:

[0028] Determine the current performance parameter of the target light emitting element corresponding to the sub-display data in the light emitting unit, wherein the performance parameter is used to characterize the correlation between the current magnitude and the light emitting brightness;

[0029] Based on the performance parameter, determining a target number of sub-pixels to be transparent in the target display area;

[0030] A target number of sub-pixels in the target display area are controlled to be in a light-transmitting state.

[0031] The display module of the above embodiment includes a display panel and a backlight module; wherein the display area of ​​the display panel includes a plurality of sub-pixels arranged in an array; the backlight module includes a plurality of light-emitting units, each of which includes a plurality of light-emitting elements emitting monochromatic light of different colors, and the light-emitting units correspond to a plurality of sub-pixels adjacent to each other in position; the plurality of light-emitting elements are configured to be lit up in a time-sharing manner in a display cycle; wherein, when the first light-emitting element in the light-emitting unit is lit, the total area occupied by the sub-pixels in the light-transmitting state in the target display area of ​​the display area is greater than the total area occupied by the sub-pixels in the light-transmitting state when the second light-emitting element is lit; the sub-pixels in the target display area correspond to the same display color, the monochromatic light emitted by the first light-emitting element is different from the monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element in the light-emitting unit except the first light-emitting element.

[0032] Among them, when the light-emitting elements of different colors emit light, the total area of ​​the target display area of ​​the display panel that transmits the color light can be different. The larger the light-transmitting area, the more light of the color light allowed to pass through. Therefore, the amount of light emitted by the first light-emitting element that passes through the display panel can be greater than the amount of light emitted by the second light-emitting element that passes through the display panel. On the one hand, adopting this setting, under the same driving current, the light emitted by the first light-emitting element can be more transmitted through the display panel, thereby improving the transmittance of the light emitted by the first light-emitting element, thereby ensuring the brightness of the display panel while reducing the driving current of the first light-emitting element, thereby reducing power consumption. On the other hand, since the driving current of the first light-emitting element can be reduced, the device life of the first light-emitting element is also guaranteed. On the other hand, since the transmission area of ​​the light emitted by the first light-emitting element is larger than the transmission area of ​​the light emitted by the second light-emitting element, the picture of the target area can be a mixture of colors in different sizes in time, thereby reducing the jagged feeling of the picture and improving the picture quality.

[0033] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the proportions in the drawings are only for illustration and do not represent the actual proportions.

[0035] Figure 1 A cross-sectional schematic diagram of the display module is shown;

[0036] Figure 2 and Figure 3 Schematic diagrams of top views of several display modules are shown respectively;

[0037] Figure 4 A schematic diagram showing the light transmission area of ​​the display module in three field sequences is shown;

[0038] Figure 5 Shows Figure 4 Schematic diagram of light transmission of the display module in three field sequences;

[0039] Figure 6 , Figure 7 and Fig.10 Schematic diagrams showing the process of a cross-shaped display pattern in several field sequential displays are shown respectively;

[0040] Figure 8 and Fig. 9 The schematic diagrams of the process of L255 picture in several field sequence displays are shown respectively;

[0041] Fig.11 A schematic plan view of a sub-pixel is shown;

[0042] Fig.12 A schematic diagram of the system architecture of a display module is shown;

[0043] Fig.13 A schematic flow chart of the steps of a method for controlling a display module is shown. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] In this specification, "electrically connected" and "coupled" include the situation where the components are connected together through an element having some electrical function. There is no particular limitation on the "element having some electrical function" as long as it can transmit and receive electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

[0046] In this specification, "parallel" means a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" means a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0047] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, ie, meaning "including, but not limited to."

[0048] The "same layer" in the embodiments of the present application refers to the relationship between multiple film layers formed by the same material after the same step (e.g., a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same. The polygons in this specification are not strictly defined, and can be approximate triangles, parallelograms, trapezoids, pentagons or hexagons, etc., and there may be some small deformations caused by tolerances.

[0049] In the embodiment of the present application, since the source and drain of the transistor are symmetrical, the source and drain can be interchanged. In the embodiment of the present application, one of the source and drain of the transistor can also be called the first electrode, and the other of the source and drain can be called the second electrode.

[0050] Field-Sequential Color LCD is lit up by three-color backlight in sequence. The LCD screen controls the color and brightness of the transmitted light according to the displayed information to achieve temporal additive color mixing. It uses a critical flicker frequency higher than that acceptable to the human eye to display red, green, and blue images in the same display area in sequence, and uses the visual persistence characteristics of the human eye to synthesize color images. Therefore, no color filter is required, and the number of pixels is reduced to 1 / 3 of that of ordinary transmissive LCDs, making it easier to achieve high-capacity and large-screen displays.

[0051] Among them, the three-color backlight source can be an LED (Light-Emitting Diode Light), which is a commonly used light-emitting device that releases energy through the recombination of electrons and holes to emit light. The three primary color LEDs can include green LEDs, red LEDs and blue LEDs.

[0052] In some examples, the three-color backlight source can also use an OLED (Organic Light-Emitting Diode) substrate, which includes a plurality of light-emitting units. The light-emitting unit includes a cathode, an anode, and an organic light-emitting layer located between the cathode and the anode. The organic light-emitting layer emits light under the action of a driving current between the anode and the cathode. The OLED light-emitting unit also includes three primary color light-emitting units, such as a light-emitting unit that emits blue light, a light-emitting unit that emits green light, and a light-emitting unit that emits red light.

[0053] In the related art, taking the backlight source of field sequential display as LED as an example, the brightness of LEDs of different colors do not match under the same current, and as the backlight source of the display panel, the display panel has inconsistent current requirements for the RGB three-color LED of the backlight, and the service life of the three-color LED is also different; therefore, for field sequential display, it is particularly important to improve the service life of the entire field sequential machine.

[0054] In view of this, the inventors have conducted in-depth research and provided a display module and a control method for the display module. In the display module and the control method for the display module, the display module can be arranged so that when the three primary colors of red, green and blue are displayed in a time-sharing manner, the display panel has different areas through which the three primary colors of red, green and blue are transmitted, so that the transmission area of ​​the target color light is larger than the transmission areas of other color lights, thereby ensuring the light transmittance of the entire machine and increasing the service life of the light-emitting element that emits the target color light.

[0055] For example, taking the target color light as green light, when the three primary colors of red, green and blue are displayed in time-sharing mode, the green light transmission area in the display panel is the largest, thereby ensuring that the driving current of the green light-emitting LED is relatively small, and the green light transmittance is guaranteed, so that the display brightness of the whole machine is guaranteed; in this way, not only the power consumption is reduced, but also the life of the green LED can be guaranteed, so that the service life of the green LED, red LED and blue LED tends to be consistent.

[0056] The display module and the control method of the display module proposed in the embodiments of the present disclosure are exemplarily described below with reference to the accompanying drawings.

[0057] First, in one embodiment, a display module is provided. Figure 1-Figure 4 As shown, Figure 1 shows a cross-sectional schematic diagram of the display module, Figure 2 and Figure 3 Schematic diagrams of top views of several display modules are shown respectively. Figure 4 A schematic diagram of the light transmission area of ​​the display module in three field sequences is shown.

[0058] like Figure 1-Figure 3 As shown, the display module includes a display panel 10 and a backlight module 20 for providing a backlight source for the display panel.

[0059] The display panel 10 includes a display area, and the display area includes a plurality of sub-pixels P arranged in an array;

[0060] The backlight module 20 includes a plurality of light-emitting units 220, each of which includes a plurality of light-emitting elements 22 that emit monochromatic light of different colors, and the light-emitting units 220 correspond to a plurality of adjacent sub-pixels P in the display panel; the plurality of light-emitting elements 22 are configured to light up in time-sharing manner;

[0061] Among them, when the first light-emitting element 221 in the light-emitting unit 220 is illuminated, the total area occupied by the sub-pixels P in the light-transmitting state in the target display area of ​​the display area is greater than the total area occupied by the sub-pixels P in the light-transmitting state when the second light-emitting element 222 is illuminated; the sub-pixels P in the target display area correspond to the same display color, the monochromatic light emitted by the first light-emitting element 221 is different from the monochromatic light emitted by the second light-emitting element 222, and the second light-emitting element 222 is any light-emitting element 22 in the light-emitting unit 220 except the first light-emitting element 221.

[0062] like Figure 2 As shown, the display panel 10 may include a display area and a non-display area. The non-display area may surround or partially surround the display area. The display area includes a plurality of sub-pixels P, and the plurality of sub-pixels P are arranged in an array. For example, the plurality of sub-pixels P may be arranged in a first direction x and a second direction y. The first direction x may be a row direction, and the second direction y may be a column direction. In this way, the plurality of sub-pixels P may be arranged into a rectangular array of multiple rows and columns.

[0063] Among them, a sub-pixel P can be used as a pixel point in the display area.

[0064] The display panel 10 may be a liquid crystal display panel, such as Figure 1 As shown, the display panel may include a first substrate 11 and a second substrate 12 that are relatively arranged, and a liquid crystal 13 located between the first substrate 11 and the second substrate 12. In the area where each sub-pixel P is located, the display panel may include a common electrode 121, a pixel electrode 112, and a liquid crystal 13 located between the common electrode 121 and the pixel electrode 112.

[0065] Among them, the second substrate 12 includes a second substrate 122, the common electrode 121 is located on the side of the second substrate 122 close to the liquid crystal 13, the first substrate 11 includes a first substrate 111, the pixel electrode 112 is located on the side of the first substrate 111 close to the liquid crystal 13, and the pixel electrode 112 and the common electrode 121 can be made of light-transmitting conductive materials.

[0066] Among them, a light-shielding layer is also included on one side of the second substrate 122, and the light-shielding layer can also be called a black matrix layer. The orthographic projection of the light-shielding layer on the first substrate 111 can overlap with the signal lines (such as the gate lines of the display area and the data lines of the display area) arranged on one side of the first substrate. The light-shielding layer includes an opening OP, and the orthographic projection of the opening OP on the first substrate 111 can overlap with the orthographic projection of the pixel electrode 112 on the first substrate 111. The opening OP is the opening of the sub-pixel P, and the light emitted by the backlight source can be emitted from the opening OP. Figure 1 Only an embodiment in which the pixel electrode and the common electrode are arranged on different substrates is illustrated. Optionally, the pixel electrode and the common electrode can also be arranged on one side of the first substrate 111. In this case, the pixel electrode and the common electrode can be arranged on the same layer or on different layers.

[0067] Among them, one side of the first substrate 111 may also include a pixel driving circuit, and a gate line GL and a data line DL connected to the pixel driving circuit, the gate line GL and the data line DL intersect to define a plurality of sub-pixels P, and the pixel electrode 112 is located in the area defined by the intersection of the data line DL and the gate line GL; the pixel driving circuit may include a thin film transistor T, the gate of the thin film transistor T is connected to the gate line GL, the source can be connected to the data line DL, and the drain can be connected to the thin film transistor T.

[0068] Among them, the pixel driving circuit can provide a driving voltage to the pixel electrode 112, and the liquid crystal 13 can be deflected under the action of the electric field formed between the pixel electrode 112 and the common electrode 121. The deflection of the liquid crystal 13 can control the transmittance of the light emitted by the backlight source, thereby realizing the grayscale adjustment of each color light by the sub-pixel P.

[0069] The backlight module 20 may include a third substrate 21 and a plurality of light-emitting units 220 located on one side of the third substrate 21. Each light-emitting unit 220 includes a plurality of light-emitting elements 22. Different light-emitting elements 22 in the same light-emitting unit 220 may emit light of different colors. For example, Figure 1 As shown, the light-emitting unit 220 can emit three primary color lights, and the light-emitting unit 220 can include three light-emitting elements 22, namely a green light-emitting element G, a red light-emitting element R and a blue light-emitting element B.

[0070] The light emitting element 22 may be an LED lamp bead, or may be an OLED light emitting unit 220 .

[0071] The size of the LED lamp may be 100 microns to 300 microns, or may be greater than 300 microns. The OLED light-emitting unit 220 may include a cathode, an anode, and an organic light-emitting layer located between the cathode and the anode. In this case, the backlight module 20 may include a substrate, and a plurality of light-emitting units 220 located on the substrate. The substrate may include a driving circuit corresponding to each light-emitting element 22, and the driving circuit may include a thin film transistor T. In some examples, the substrate may have a structure similar to that of the first substrate.

[0072] In an exemplary embodiment, in a light-emitting unit 220, there may be one or more light-emitting elements 22 of the same color. For example, in the light-emitting unit 220, there may be a plurality of light-emitting elements 22 emitting green light, a plurality of light-emitting elements 22 emitting red light, and a plurality of light-emitting elements 22 emitting blue light, wherein the number of light-emitting elements 22 emitting different light-emitting colors may be the same. For example, the number of light-emitting elements 22 emitting green light, light-emitting elements 22 emitting red light, and light-emitting elements 22 emitting blue light may all be j; j is a positive integer.

[0073] In this exemplary embodiment, in each field, the light emitting elements 22 emitting the same color light can all be illuminated, or at least partially illuminated. For example, in the display of the green field, the light emitting elements 22 emitting green light can all be illuminated, or at least some of the green light emitting elements G can be illuminated.

[0074] Among them, one light emitting unit 220 may correspond to a display block in the display area, and the display block is called a sub-display area A1. For example, Figure 1 As shown, the display area can be divided into multiple sub-display areas A1, each sub-display area A1 can include multiple sub-pixels P located adjacent to each other, the multiple sub-pixels P in the sub-display area A1 can be arranged in a matrix, one light-emitting unit 220 can correspond to one sub-display area A1, and the light-emitting units 220 of different sub-display areas A1 can be isolated to avoid the light-emitting unit 220 corresponding to one sub-display area A1 from causing color crosstalk to another sub-display area A1.

[0075] like Figure 2 As shown, the backlight source can be a direct-type backlight source, and the multiple sub-pixels P in the sub-display area A1 can be arranged in a 5*5 array or a 4*4 array. For example, one sub-display area A1 can be arranged in a 5*5 array, and one sub-display area A1 corresponds to one light-emitting unit 220. The orthographic projection of the light-emitting unit 220 on the display panel can be located in the sub-display area A1.

[0076] like Figure 3As shown, the backlight source may be an edge-type backlight source, a plurality of sub-display areas A1 may be arranged along the second direction y, each sub-display area A1 includes n rows of sub-pixels P; and one sub-display area A1 corresponds to one light-emitting unit 220 .

[0077] In this embodiment, the display panel can be configured to display images. For example, the display panel may include a display driver chip. The display driver chip can split the image data into a color component map of three color components based on the incoming image data, such as a green component map, a blue component map, and a red component map, wherein the green component map may include the grayscale value of each sub-pixel P in the green channel, the red component map may include the grayscale value of each sub-pixel P in the red channel, and the blue component map may include the grayscale value of each sub-pixel P in the blue channel.

[0078] When driving the display, the color of the display panel can be refreshed in sequence according to the three color component maps. For example, taking the driving in the order of the green component map, the blue component map and the red component map as an example, when displaying according to the green component map, the liquid crystal 13 in the sub-pixel P can be driven to deflect to the corresponding angle first, and then the green light-emitting element G in the light-emitting unit 220 of the backlight module 20 is driven to emit light, thereby the green light passes through the liquid crystal 13 with a certain deflection angle at the sub-pixel P; when displaying according to the blue component map, the liquid crystal 13 in the sub-pixel P can be driven to deflect to the corresponding angle first, and then the blue light-emitting element B in the light-emitting unit 220 of the backlight module 20 is driven to emit light, thereby the blue light passes through the liquid crystal 13 with a certain deflection angle at the sub-pixel P; when displaying according to the red component map, the liquid crystal 13 in the sub-pixel P can be driven to deflect to the corresponding angle first, and then the red light-emitting element R in the light-emitting unit 220 of the backlight module 20 is driven to emit light, thereby the red light passes through the liquid crystal 13 with a certain deflection angle at the sub-pixel P. The transmitted green light, blue light and red light are then mixed in time, and the corresponding display colors are displayed using the visual pause effect of the human eye.

[0079] In this embodiment, the plurality of light emitting elements 22 in the light emitting unit 220 are configured to be lit in time division, which can be understood as the plurality of light emitting elements 22 being lit in sequence in the display of one frame.

[0080] When a light emitting element 22 of a certain color in the light emitting unit 220 is lit, light emitting elements 22 of other colors may not be lit. For example, when the green light emitting element G is lit, the red light emitting element R and the blue light emitting element B are not lit.

[0081] In this embodiment, in the display of at least one frame of the picture, the display panel can be configured so that when the first light-emitting element 221 in the light-emitting unit 220 is lit, the area occupied by the sub-pixel P in the light-transmitting state in the target display area is larger than the area occupied by the sub-pixel P in the light-transmitting state when the second light-emitting element 222 is lit.

[0082] The sub-pixels P in the target display area correspond to the same display color. Display color refers to the display color of the sub-pixel P in the frame, which can be white, black, yellow, etc. The grayscale value of the sub-pixel P in the three color component diagrams is obtained by the display color of the sub-pixel P.

[0083] For example, Figure 4 As shown, taking the target display area as a cross-shaped graphic as an example, the display color of the cross-shaped graphic can be any color among black, white, gray, and color. In the image data to be displayed, the display color of each pixel in the cross-shaped graphic can be consistent.

[0084] In this embodiment, when displaying the target display area, the area occupied by the sub-pixel P of the target display area that transmits light through the first light-emitting element 221 is larger than the area occupied by the sub-pixel P that transmits light through the second light-emitting element 222 .

[0085] For example, Figure 5 As shown, the light-emitting unit 220 includes three light-emitting elements 22 of different colors, and the three light-emitting elements 22 are lit in sequence. One of the second light-emitting elements 222 is lit first, and the sub-pixel P in the target area that allows the light of the second light-emitting element 222 to pass through is P1; then, the first light-emitting element 221 is lit, and the sub-pixel P in the target area that allows the light of the first light-emitting element 221 to pass through is P2; then, another second light-emitting element 222 is lit last, and the sub-pixel P in the target area that allows the light of the second light-emitting element 222 to pass through is P3. Among them, the number of sub-pixels P1 and sub-pixels P3 are both less than the number of sub-pixels P2, so that the transmission area of ​​the light emitted by the second light-emitting element 222 is the largest.

[0086] The area of ​​the sub-pixel P may refer to: the plane area of ​​the orthographic projection of the opening of the sub-pixel P on the display panel; Figure 4 As shown, the total area occupied by the sub-pixels P in the light-transmitting state may refer to: the total area of ​​the openings OP of the sub-pixels P in the light-transmitting state in the display area. Exemplarily, assuming that the opening area of ​​the sub-pixel P is i, and the number of sub-pixels P in the light-transmitting state is m, the total area occupied by the sub-pixels P in the light-transmitting state may be i*m.

[0087] Then, if Figure 4As shown, the area occupied by the sub-pixel P of light emitted through the first light-emitting element 221 is larger than the area occupied by the sub-pixel P of light emitted through the second light-emitting element 222. This can be understood as: the light-transmitting area of ​​light emitted through the first light-emitting element 221 in the target display area is larger than the light-transmitting area of ​​light emitted through the second light-emitting element 222 in the target display area.

[0088] In one example, it can also be expressed as: when the first light-emitting element 221 is illuminated, the area ratio of the sub-pixels P in the target display area that is in the light-transmitting state is greater than the area ratio of the sub-pixels P in the light-transmitting state when the second light-emitting element 222 is illuminated.

[0089] The area ratio occupied by the sub-pixels P in the light-transmitting state may refer to: the ratio of the total area of ​​the sub-pixels P in the light-transmitting state to the plane area of ​​the target display area. Exemplarily, assuming that the plane area of ​​the target display area is K, the opening area of ​​the sub-pixel P is i, and the number of sub-pixels P in the light-transmitting state is m, then the area ratio occupied by the sub-pixels P in the light-transmitting state may be: i*m / K.

[0090] The monochromatic light emitted by the first light emitting element 221 is different from the monochromatic light emitted by the second light emitting element 222, and the second light emitting element 222 is any light emitting element 22 in the light emitting unit 220 except the first light emitting element 221. Thus, in the light emitting unit 220, the light emitted by the first light emitting element 221 has the largest transmission area in the target display area.

[0091] The light emitting elements 22 of different colors in the light emitting unit 220 may have different light emitting brightness under the same driving current. Thus, in an exemplary embodiment, the first light emitting element 221 may be the light emitting element 22 with the lowest current-brightness cost performance in the light emitting unit 220, that is, the first light emitting element 221 is the light emitting element 22 with the lowest light emitting brightness under the same driving current among the light emitting elements 22 in the light emitting unit 220.

[0092] In the related art, in order to improve the brightness of the light emitted by the first light-emitting element 221, the driving current of the first light-emitting element 221 is generally increased. However, increasing the driving current will reduce the service life of the first light-emitting element 221, making the first light-emitting element 221 scrapped earlier than the second light-emitting element 222. In this embodiment, by increasing the transmission area of ​​the light emitted by the first light-emitting element 221, not only the brightness of the light emitted to the display panel can be guaranteed, but also the first light-emitting element 221 can work under a smaller driving current, thereby ensuring the service life of the first light-emitting element 221, so that the actual service life of each light-emitting element 22 in the light-emitting unit 220 can be consistent; and the overall power consumption of the display module can also be reduced.

[0093] Please combine Figure 4 As shown, in the display of the target display area, different colored lights emitted by different light-emitting elements 22 pass through areas of different sizes in a time sequence, so that the colors on areas of different sizes are mixed in time, thereby reducing the jaggedness of the picture and improving the picture quality.

[0094] It should be noted that Figure 4 The transmittance of a frame of picture in different time sequence color fields is reflected in one picture for easy understanding. It can be understood that the time interval between the colors displayed in these different color fields is very small, so the visual pause effect of the human eye is used to display the cross pattern of the corresponding color.

[0095] In one embodiment, please combine Fig.12 As shown, Fig.12 A schematic diagram of the driving system of the display module is shown. Fig.12 As shown, the display panel may include a processor, a timing drive module and a backlight drive module. The processor may be configured to decompose the incoming image data into color component images of three colors. The data of the three color component images may enter the timing drive module. The timing drive module may generate a first timing control signal corresponding to each color component image based on each color component image. The first timing control signal is used to control the deflection angle of the liquid crystal 13 in each sub-pixel P in the display panel, which may be driven by row scanning.

[0096] The timing driving module can also generate a second timing control signal corresponding to each color component image based on each color component image, and the second timing control signal is sent to the backlight driving module, and the backlight driving module controls the corresponding light-emitting elements 22 in each light-emitting unit 220 in the backlight module 20 to emit light according to the second timing control. The second timing control signal can control each light-emitting unit 220 in the backlight module 20 to light up in a partition, such as lighting up the light-emitting element 22 in the display block driven by the current first timing control signal.

[0097] In an exemplary embodiment, the plurality of light emitting elements 22 include a green light emitting element G, a red light emitting element R and a blue light emitting element B, wherein the first light emitting element 221 is the green light emitting element G, and the second light emitting element 222 is the red light emitting element R and the blue light emitting element B.

[0098] In this way, the transmission area of ​​the green light in the target display area can be increased.

[0099] In this way, the brightness of the green light can be improved and the poor picture quality can be improved. At the same time, the improvement in brightness is because the transmission area of ​​the green light is increased. In this way, the green light-emitting element G can operate at a lower wick current to avoid damage to the wick of the green light-emitting element G, thereby extending the service life of the green light-emitting element G and making the actual service life of the green light-emitting element G consistent with the actual service life of the red light-emitting element R and the blue light-emitting element B.

[0100] In an exemplary embodiment, the largest transmission area of ​​the light emitted by the first light emitting element 221 may mean that the number of sub-pixels P through which the light emitted by the first light emitting element 221 is transmitted is the largest. For example, when the first light emitting element 221 is lit, the number of sub-pixels P in the light-transmitting state in the target display area is greater than the number of sub-pixels P in the light-transmitting state when the second light emitting element 222 is lit.

[0101] In this embodiment, the areas of the sub-pixels P may be the same, that is, the aperture ratios of the sub-pixels P may be the same, where the aperture ratio refers to the ratio of the plane area of ​​the opening of the sub-pixel P to the area of ​​the display region.

[0102] like Figure 4 , which shows the case where the number of sub-pixels P through which the light emitted by the first light emitting element 221 passes is the largest, thereby maximizing the transmission area of ​​the light emitted by the first light emitting element 221 .

[0103] In an example of this embodiment, the sub-pixel P of the light emitted by the first light-emitting element 221 and the sub-pixel P of the light emitted by the second light-emitting element 222 may be different sub-pixels P. For example, Figure 4 and Figure 7 As shown, Figure 7 FIG. 4 shows a schematic diagram of the field sequence display process of a frame of picture, such as Figure 7 As shown, the sub-pixel P of light emitted by the first light-emitting element 221 and the sub-pixel P of light emitted by the second light-emitting element 222 are independent of each other.

[0104] Mutually independent may mean that when the first light emitting element 221 emits light, the sub-pixel P in the light-transmitting state is in the light-opaque state when the second light emitting element 222 emits light. Figure 5 As shown, when the first light emitting element 221 emits light, the sub-pixel P2 is in a light-transmitting state, and when the second light emitting element 222 emits light, the sub-pixel P2 is in a light-opaque state. Similarly, when the second light emitting element 222 emits light, the sub-pixel P1 is in a light-transmitting state, and when the first light emitting element 221 emits light, the sub-pixel P1 is in a light-opaque state.

[0105] In this way, the display driving of the display panel can be simplified, and the light mixing of multiple colors by the same sub-pixel P can be reduced, thereby achieving color mixing uniformity of the entire picture in the target display area.

[0106] In an example of this embodiment, a plurality of sub-pixels P in the display area may be grouped to obtain a plurality of pixel groups, each of which may include at least four sub-pixels P adjacent to each other in a row direction. Exemplarily, a plurality of pixel groups may be arranged in a row direction, each of which includes a plurality of columns of sub-pixels P, and one pixel group includes at least four columns of sub-pixels P.

[0107] Furthermore, each pixel group can be divided into multiple sub-pixel groups, and the multiple sub-pixel groups respectively correspond to multiple light-emitting elements 22 that emit light of different colors, that is, the number of sub-pixel groups is the same as the number of light-emitting elements 22 in the light-emitting unit 220. In this way, in the row direction, each sub-pixel group can include at least one sub-pixel P, wherein the sub-pixel group corresponding to the first light-emitting element 221 includes the largest number of sub-pixels P.

[0108] For example, Figure 4 As shown, every 9 columns of sub-pixels P form a group, and one pixel group is divided into 3 sub-pixel groups. In the row direction, the number of sub-pixels P included in the three sub-pixel groups is 2, 5, and 2 respectively. Then, the sub-pixel group including 5 sub-pixels P corresponds to the first light-emitting element 221, and the sub-pixel group including 2 sub-pixels P corresponds to the second light-emitting element 222. In this way, the ratio of the number of sub-pixels P of light emitted by the first light-emitting element 221 to the number of sub-pixels P of light emitted by the second light-emitting element 222 can be: 2:5:2.

[0109] Of course, in some other examples, the ratio of the sub-pixels P included in each sub-pixel group in the pixel group may also be other ratios, for example, Fig. 9 As shown, Fig. 9 FIG. 4 shows a schematic diagram of the light transmission area of ​​the display area in three field sequences when the L255 picture is displayed. Fig. 9 As shown, every 9 columns of sub-pixels P form a group, and one pixel group is divided into 3 sub-pixel groups. In the row direction, the number of sub-pixels P included in the three sub-pixel groups is 2, 4, and 3 respectively, so the ratio of the number of sub-pixels P included in each sub-pixel group in the pixel group is: 2:4:3. Among them, on a row of sub-pixels P, the number of sub-pixels P corresponding to the first light-emitting element 221 is 4, the number of sub-pixels P corresponding to one second light-emitting element 222 is 2, and the number of sub-pixels P corresponding to another second light-emitting element 223 is 3. The first light-emitting element 221 can be a green light-emitting element G, the second light-emitting element 222 can be a red light-emitting element R, and the second light-emitting element 223 can be a blue light-emitting element B.

[0110] In this embodiment, a plurality of pixel groups may be arranged in a row direction, so that all sub-pixel groups in the display area may be regarded as a periodic arrangement structure.

[0111] Exemplarily, the plurality of light emitting elements 22 include a green light emitting element G, a red light emitting element R and a blue light emitting element B; wherein the first light emitting element 221 is a green light emitting element G; thus, Figure 5 As shown, when the green light emitting element G is lit, a plurality of first sub-pixels P2 in the target display area are in a light-transmitting state; when the blue light emitting element B is lit, a plurality of second sub-pixels P3 in the target display area are in a light-transmitting state; when the red light emitting element R is lit, a plurality of third sub-pixels P1 in the target display area are in a light-transmitting state;

[0112] The first sub-pixels P2 , the second sub-pixels P3 and the third sub-pixels P1 are arranged periodically; and in one arrangement period, the number of the first sub-pixels P2 is greater than the number of the second sub-pixels P3 and the third sub-pixels P1 .

[0113] like Figure 7 and Figure 8 As shown, Figure 8 A field sequence picture diagram of the L255 picture is shown, and the backlight source is started in the order of the red field, the green field and the blue field. In the red field R, multiple third sub-pixels P1 are in a light-transmitting state, and every two sub-pixels P of the multiple third sub-pixels P1 form a sub-pixel group R, which are arranged at intervals in the display area; in the green field G, multiple first sub-pixels P2 are in a light-transmitting state, and every five sub-pixels P of the multiple first sub-pixels P2 form a sub-pixel group G, which are arranged at intervals in the display area; in the blue field B, multiple second sub-pixels P3 are in a light-transmitting state, and every two sub-pixels P of the multiple second sub-pixels P3 form a sub-pixel group B, which are arranged at intervals in the display area.

[0114] In this way, the sub-pixel group R, the sub-pixel group G and the sub-pixel group B are arranged periodically in the display area, thereby improving the uniformity of the display color of the picture in the target display area.

[0115] Of course, in order to improve the uniformity of displayed colors and the fineness of the displayed colors of the pictures viewed by the human eye, the fewer sub-pixels P included in the pixel group, the more uniform the picture color. For example, when the pixel group includes 4 sub-pixels P, the ratio of the number of sub-pixels P included in the sub-pixel group R, the sub-pixel group G and the sub-pixel group B can be: 1:2:1.

[0116] In some other embodiments, when the number of sub-pixels P transmitted through the light emitted by the first light-emitting element 221 is the largest, the sub-pixel P1 transmitted through the light emitted by the first light-emitting element 221 may have overlapping sub-pixels P with the sub-pixel P2 transmitted through the light emitted by the second light-emitting element 222. For example, some sub-pixels P in the target display area that are in a light-transmitting state when the first light-emitting element 221 is turned on are also in a light-transmitting state when the second light-emitting element 222 is turned on.

[0117] It should be noted that the sub-pixel P1 of the light emitted by the first light-emitting element 221 and the sub-pixel P2 of the light emitted by the second light-emitting element 222 may partially overlap, that is, some sub-pixels P in the plurality of sub-pixels P1 may be in a light-transmitting state when the second light-emitting element 222 emits light, and the remaining sub-pixels P may be in a light-opaque state when the second light-emitting element 222 emits light. Similarly, some sub-pixels P in the sub-pixels P2 may be in a light-transmitting state when the first light-emitting element 221 emits light, and the remaining sub-pixels P may be in a light-opaque state when the first light-emitting element 221 emits light, or all sub-pixels P2 may be in a light-transmitting state when the first light-emitting element 221 emits light.

[0118] By adopting this example, some sub-pixels in the target display area can simultaneously mix the light emitted by the first light-emitting element 221 and the light emitted by the second light-emitting element 222, thereby improving the color saturation of the target display area.

[0119] In this embodiment, the first light emitting element 221 may be a green light emitting element G, and the second light emitting element 222 may include a blue light emitting element B and a red light emitting element R.

[0120] In an exemplary embodiment, the second sub-pixel P2 that emits light through the blue light-emitting element B and the second sub-pixel P2 that emits light through the red light-emitting element R may be different, that is, the second sub-pixel P2 that emits light through the blue light-emitting element B and the second sub-pixel P2 that emits light through the red light-emitting element R may be independent sub-pixels P from each other.

[0121] For example, Figure 6 As shown, Figure 6 FIG. 4 shows a schematic diagram of the field sequence display process of another frame of picture, such as Figure 6 As shown, it includes a green light emitting element G, a blue light emitting element B and a red light emitting element R, wherein the number of sub-pixels P emitting light through the green light emitting element G is the largest.

[0122] like Figure 6As shown, the backlight source is started in the order of the red field, the green field and the blue field. In the red field R, multiple third sub-pixels P1 are in a light-transmitting state, and every two sub-pixels P of the multiple third sub-pixels P1 form a sub-pixel group R, which are arranged at intervals in the display area; in the green field G, multiple first sub-pixels P2 are in a light-transmitting state, and the multiple first sub-pixels P2 are all the sub-pixels P in the target display area; in the blue field B, multiple second sub-pixels P3 are in a light-transmitting state, and every two sub-pixels P of the multiple second sub-pixels P3 form a sub-pixel group B, which are arranged at intervals in the display area.

[0123] In this way, the sub-pixel group R, the sub-pixel group B and the plurality of first sub-pixels P2 all have overlapping sub-pixels P. For example, the plurality of first sub-pixels P2 include all the sub-pixels P in the sub-pixel group R and the sub-pixel group B. Thus, after the three colors are mixed in time, the display color of the target display area can be presented.

[0124] In an exemplary embodiment, taking the example of multiple light-emitting elements 22 including a green light-emitting element G, a red light-emitting element R and a blue light-emitting element B, wherein the first light-emitting element 221 may be a green light-emitting element G, wherein when the blue light-emitting element B is illuminated, the number of sub-pixels P in a light-transmitting state in the target display area is equal to the number of sub-pixels P in a light-transmitting state when the red light-emitting element R is illuminated.

[0125] By adopting this embodiment, the service life of the green light emitting element G can be extended, and the transmittance of the light emitted by the red light emitting element R and the blue light emitting element B can be ensured to be consistent, so that the two light emitting elements 22 can operate under the same driving current, thereby ensuring that the actual service life of the two light emitting elements 22 is consistent.

[0126] Of course, in some other examples, the number of sub-pixels P that emit light through the blue light-emitting element B may be less than the number of sub-pixels P that emit light through the red light-emitting element R. Alternatively, the number of sub-pixels P that emit light through the blue light-emitting element B may be greater than the number of sub-pixels P that emit light through the red light-emitting element R.

[0127] In an exemplary embodiment, the transmission area of ​​the light emitted through the first light emitting element 221 may also be increased by increasing the aperture ratio of the sub-pixel P that transmits the first light emitting element 221 .

[0128] Please combine Fig.11 As shown, Fig.11 Schematic diagram of a top view of three sub-pixels P is shown. Fig.11 As shown, when the first light-emitting element 221 is illuminated, the aperture ratio of a single sub-pixel P in a light-transmitting state in the target display area is greater than the aperture ratio of a single sub-pixel P in a light-transmitting state when the second light-emitting element 222 is illuminated.

[0129] like Fig.11 As shown, the opening of the sub-pixel P refers to the area defined by the opening on the black matrix, in which light is allowed to pass. The opening ratio refers to the ratio of the plane area of ​​the opening of the sub-pixel P to the area of ​​the display area.

[0130] When the aperture ratio of the sub-pixel P that emits light through the first light-emitting element 221 is the largest, it can be ensured that the transmission area of ​​the light emitted by the first light-emitting element 221 is large.

[0131] Among them, when the second light emitting element 222 is lit, the aperture ratio of a single sub-pixel P in a light-transmitting state is relatively small.

[0132] In one example, the maximum difference between the aperture ratio of the sub-pixel P emitting light through the first light-emitting element 221 and the aperture ratio of the single sub-pixel P emitting light through the second light-emitting element 222 may be around 7%, such as 6%, 7%, or 8%.

[0133] like Fig.11 As shown, in an exemplary embodiment, each sub-pixel P in the display area may correspond to a different aperture ratio. For example, the display area may include three sub-pixels P, such as a fourth sub-pixel 1121 , a fifth sub-pixel 1123 , and a sixth sub-pixel 1122 .

[0134] The fourth sub-pixel 1121, the fifth sub-pixel 1123 and the sixth sub-pixel 1122 are periodically arranged in the display area, and the fourth sub-pixel 1121, the fifth sub-pixel 1123 and the sixth sub-pixel 1122 correspond to different aperture ratios;

[0135] When the first light emitting element 221 is turned on, the sub-pixel P with the largest aperture ratio among the fourth sub-pixel 1121 , the fifth sub-pixel 1123 and the sixth sub-pixel 1122 is in a light-transmitting state.

[0136] like Fig.11 As shown, each sub-pixel P in the display area can correspond to three aperture ratios, and the fourth sub-pixel 1121, the fifth sub-pixel 1123 and the sixth sub-pixel 1122 corresponding to the three aperture ratios are periodically arranged in the display area. For example, the fourth sub-pixel 1121, the fifth sub-pixel 1123 and the sixth sub-pixel 1122 are periodically arranged in the row direction x, and their arrangement state in the row direction can be: the fourth sub-pixel 1121, the fifth sub-pixel 1123, the sixth sub-pixel 1122, the fourth sub-pixel 1121, the fifth sub-pixel 1123, the sixth sub-pixel 1122, the fourth sub-pixel 1121, the fifth sub-pixel 1123, the sixth sub-pixel 1122...., that is, every two adjacent sub-pixels P in the row direction correspond to different aperture ratios.

[0137] refer to Fig.11 , Fig.11 It is only schematically shown that the pixel electrode 112 is provided with a pixel electrode layer including a plurality of slits, and the common electrode 121 is provided in a block structure. Taking the pixel electrode 112 and the common electrode 121 being located on the same side of the liquid crystal, such as being both located on the side of the first substrate 111 as an example, the pixel electrode 112 can be provided on the side of the common electrode 121 away from the first substrate 111, and adjacent common electrodes 121 are electrically connected through a common electrode line CL1 on the same layer as the gate line GL. Optionally, the common electrode line CL1 and the common electrode 121 can be directly electrically connected.

[0138] In one example, in this case, a method for achieving different aperture ratios for two adjacent sub-pixels P may be to design the areas of the pixel electrodes 112 of the sub-pixel regions differently, such as the areas of the positive projections of the pixel electrodes 112 of two adjacent sub-pixels P on the first substrate 111 are different, thereby achieving a differentiated design of the aperture ratios.

[0139] In one example, the light shielding layer in two adjacent sub-pixels P may block different areas to achieve different aperture ratios. For example, in two adjacent sub-pixels P, the black matrix set on the second substrate 122 blocks different areas of the sub-pixel region of the first substrate 111 to achieve differentiated aperture ratios. Fig.11 In this case, the aperture ratio of the green sub-pixel (the fourth sub-pixel 1121) is greater than the aperture ratios of the other two color sub-pixels.

[0140] In the case where the black matrix blocks different areas of the sub-pixel region of the first substrate 111, the connection points of the signal lines on the first substrate can be designed specifically. For example, the electrical connection points of the signal lines (the connection points between the signal lines and the corresponding electrodes) can be set near the sub-pixels with smaller aperture ratios. Fig.11 As shown, for the blue sub-pixel (fifth sub-pixel 1123), the connecting electrode portion CL2 connecting the adjacent row common electrode 121 can be set in the area corresponding to the blue sub-pixel. In this way, such a design can maintain the aperture ratio of the green sub-pixel (fourth sub-pixel 1121).

[0141] in, Fig.11 It is shown that every two adjacent sub-pixels P in the row direction correspond to different aperture ratios.

[0142] Among them, a column of sub-pixels P in the column direction may correspond to the same aperture ratio.

[0143] In one example, every two adjacent sub-pixels P in the column direction may correspond to different aperture ratios.

[0144] like Fig.11As shown, the aperture ratio of the opening OP of the fourth sub-pixel 1121 may be 63%, the aperture ratio of the opening OP of the fifth sub-pixel 1123 may be 57.2%, and the aperture ratio of the opening OP of the sixth sub-pixel 1122 may be 55.6%. The difference between the aperture ratios of the sub-pixel P with the largest aperture ratio and the sub-pixel P with the smallest aperture ratio is 7.4%.

[0145] When the first light emitting element 221 is lit, the sub-pixel P with the largest aperture ratio among the fourth sub-pixel 1121, the fifth sub-pixel 1123 and the sixth sub-pixel 1122 is in a light-transmitting state. Fig.11 As shown, when the first light emitting element 221 is turned on, the fourth sub-pixel 1121 is in a light-transmitting state.

[0146] Taking the example of multiple light-emitting elements 22 including a green light-emitting element G, a red light-emitting element R and a blue light-emitting element B, the green light-emitting element G is the first light-emitting element 221. When the green light-emitting element G emits light, each fourth sub-pixel 1121 is in a light-transmitting state, and the fifth sub-pixel 1123 and the sixth sub-pixel 1122 are in a light-opaque state; when the blue light-emitting element B emits light, the fifth sub-pixel 1123 is in a light-transmitting state, and the fourth sub-pixel 1121 and the sixth sub-pixel 1122 are in a light-opaque state; when the red light-emitting element R emits light, the sixth sub-pixel 1122 is in a light-transmitting state, and the fourth sub-pixel 1121 and the fifth sub-pixel 1123 are in a light-opaque state.

[0147] In this embodiment, when the first light emitting element 221 is turned on, the number of sub-pixels P in the target display area that are in a light-transmitting state may be equal to the number of sub-pixels P in a light-transmitting state when the second light emitting element 222 is turned on.

[0148] In one example, every three sub-pixels P adjacent in the row direction may form a pixel group, and each pixel group may include a fourth sub-pixel 1121, a fifth sub-pixel 1123, and a sixth sub-pixel 1122. In each field sequence, one of the fourth sub-pixel 1121, the fifth sub-pixel 1123, and the sixth sub-pixel 1122 in each pixel group is in a light-transmitting state. In this way, the number of sub-pixels P that emit light through each color of the light-emitting element 22 may be the same. For example, the number of sub-pixels P that emit light through each green light-emitting element G, red light-emitting element R, and blue light-emitting element B is M.

[0149] In this example, it is only necessary to make the sub-pixel P with the largest aperture ratio in each pixel group in a light-transmitting state when the first light-emitting element 221 emits light. Therefore, the transmission area of ​​the light emitted by the first light-emitting element 221 can be increased by increasing the aperture ratio of the sub-pixel P that emits light through the first light-emitting element 221.

[0150] In another example, Fig.10As shown, every three adjacent sub-pixels P in the row direction may be a pixel group, each pixel group may include multiple sub-pixels P with the same aperture ratio, and different pixel groups may correspond to different aperture ratios. For example, including a first pixel group, a second pixel group and a third pixel group, the first pixel group includes three fourth sub-pixels 1121, the second pixel group includes three fifth sub-pixels 1123, and the third pixel group includes three sixth sub-pixels 1122. The first pixel group, the second pixel group and the third pixel group may be arranged periodically in the display area.

[0151] In this example, the pixel group with the largest aperture ratio among the plurality of pixel groups is in a light-transmitting state when the first light-emitting element 221 emits light. Fig.10 As shown, the number of sub-pixels P passing through the first light-emitting element 221 and the second light-emitting element 222 is the same, but the aperture ratios of the sub-pixels P passing through the first light-emitting element 221 and the second light-emitting element 222 are different, so that the transmission area of ​​the light emitted by the first light-emitting element 221 is larger than the transmission area of ​​the light emitted by the second light-emitting element 222.

[0152] In one embodiment, a control method for a display module is also provided. Fig.13 As shown, a schematic diagram of the steps of the control method is shown, such as Fig.13 As shown, this control method can be applied to Figure 1-Figure 12 Any of the above-mentioned display modules may specifically include the following steps:

[0153] Step S100: determining a target display area in the picture to be displayed;

[0154] Step S200: splitting the display data of the display screen of the target display area into a plurality of sub-display data, each sub-display data corresponds to a color component in the display screen, and different color components correspond to light emitting elements 22 of different colors in the light emitting unit 220;

[0155] Step S300: for each sub-display data, after controlling part of the sub-pixels P in the target display area to be in a light-transmitting state, control the light-emitting element 22 corresponding to the sub-display data to light up;

[0156] Among them, when the first light-emitting element 221 in the light-emitting unit 220 is illuminated, the area occupied by the sub-pixel P in the light-transmitting state in the target display area is larger than the area occupied by the sub-pixel P in the light-transmitting state when the second light-emitting element 222 is illuminated, the monochromatic light emitted by the first light-emitting element 221 is different from the monochromatic light emitted by the second light-emitting element 222, and the second light-emitting element 222 is any light-emitting element 22 in the light-emitting unit 220 except the first light-emitting element 221.

[0157] In this embodiment, the display colors of the sub-pixels P in the target display area are the same.

[0158] Among them, the display data of the display screen of the target display area can be split into multiple sub-display data, each sub-display data corresponds to a color component in the display screen, and the sub-display data can refer to the color component map described in the above embodiment, wherein different color components correspond to light-emitting elements 22 of different colors in the light-emitting unit 220, that is, different color component maps correspond to light-emitting elements 22 of different colors.

[0159] The display data may include display color data of each sub-pixel P in the display area, and the display color data may include grayscale values ​​in a red channel, a green channel, and a blue channel.

[0160] Among them, for each sub-display data, a first timing control signal and a second timing control signal can be generated, and the first timing control signal is used to control the deflection angle of the liquid crystal 13 of each sub-pixel P in the display area, that is, the corresponding driving voltage is loaded to the pixel electrode 112 of each sub-pixel P through the first timing control signal.

[0161] The second timing control signal is used to control the light emitting elements 22 of different colors in the backlight source to emit light in different timings based on each color component image, that is, to emit light in time division.

[0162] For each sub-display data, part of the sub-pixels P in the target display area may be controlled to be in a light-transmitting state at a first time, and the light-emitting element 22 corresponding to the sub-display data may be controlled to light up at a second time after the first time.

[0163] For example, Figure 4 For example, including red sub-display data of the red component, green sub-display data of the green component and blue sub-display data of the blue component, in the field sequence of the red sub-display data, the liquid crystal 13 of multiple third sub-pixels P1 in the cross-shaped display area is first controlled to be deflected so that it is in a light-transmitting state, and the remaining sub-pixels P in the cross-shaped display area are in a light-opaque state, and then the red light-emitting element R is controlled to emit light; in the field sequence of the green sub-display data, the liquid crystal 13 of multiple first sub-pixels P2 in the cross-shaped display area is first controlled to be deflected so that it is in a light-transmitting state, and the remaining sub-pixels P in the cross-shaped display area are in a light-opaque state, and then the green light-emitting element G is controlled to emit light; in the field sequence of the blue sub-display data, the liquid crystal 13 of multiple second sub-pixels P3 in the cross-shaped display area is first controlled to be deflected so that it is in a light-transmitting state, and the remaining sub-pixels P in the cross-shaped display area are in a light-opaque state, and then the blue light-emitting element B is controlled to emit light.

[0164] In this way, the cross-shaped pattern can be mixed in the time domain, and the color mixing scheme adopts global color mixing. For example, the sub-pixel P is in a light-transmitting state in one of the three field sequences, so that the light transmitted by multiple sub-pixels P is mixed together to form the display color of the target display area.

[0165] In this embodiment, when the first light-emitting element 221 in the light-emitting unit 220 is illuminated, the area occupied by the sub-pixel P in the light-transmitting state in the target display area is larger than the area occupied by the sub-pixel P in the light-transmitting state when the second light-emitting element 222 is illuminated, the monochromatic light emitted by the first light-emitting element 221 is different from the monochromatic light emitted by the second light-emitting element 222, and the second light-emitting element 222 is any light-emitting element 22 in the light-emitting unit 220 except the first light-emitting element 221.

[0166] In this embodiment, in each field sequence, part of the sub-pixels P in the target display area may be controlled to be in a light-transmitting state, and the remaining part of the sub-pixels P in the target display area may be controlled to be in a light-opaque state.

[0167] In one example, the aperture ratios of the sub-pixels P in the display area may be the same. In order to ensure the transmittance of the light emitted by the first light-emitting element 221 , the number of sub-pixels P that emit light through the first light-emitting element 221 may be the largest.

[0168] Exemplarily, in each field sequence, the current performance parameters of the target light-emitting element 22 corresponding to the sub-display data in the light-emitting unit 220 are determined, and based on the performance parameters, the target number of sub-pixels P to be transparent in the target display area is determined; then, the target number of sub-pixels P in the target display area are controlled to be in a transparent state.

[0169] Among them, the performance parameters are used to characterize the correlation between current size and luminous brightness.

[0170] Generally speaking, the current magnitude and the luminous brightness are proportional, that is, they can be approximated as a linear relationship. The correlation between the current magnitude and the luminous brightness can refer to: when the current magnitude and the luminous brightness are linearly related, the slope of the linear relationship. For example, the correlation can be expressed as the following relationship:

[0171] L=a*I+b, where a and b are constants.

[0172] When L is constant, the larger a is, the smaller the current is, and the smaller a is, the larger the current is. This correlation can characterize the life decay degree and power consumption of the light-emitting element 22. For example, the larger a is, the slower the life decay may be and the smaller the power consumption is; the smaller a is, the faster the life decay may be and the greater the power consumption is.

[0173] Therefore, based on the association relationship, the lifetime decay and power consumption of the light-emitting element 22 targeted by the current field sequence can be determined. Thus, based on the lifetime decay and power consumption, the target number of sub-pixels P that emit light through the current light-emitting element 22 in the target display area can be determined, and then the target number of sub-pixels P are controlled to be in a light-transmitting state.

[0174] Exemplarily, light-emitting elements 22 with higher lifetime attenuation and power consumption may correspond to a larger number of sub-pixels P.

[0175] In this embodiment, the light emitting element 22 with higher lifetime attenuation and power consumption is the first light emitting element 221 . For example, the green light emitting element G can generally be used as the first light emitting element 221 .

[0176] By adopting this embodiment, the number of sub-pixels P corresponding to the current light-emitting element 22 can be dynamically determined in each field sequence, so that the light-transmitting area is adapted to the lifetime attenuation and power consumption of the current light-emitting element 22, thereby achieving ultimate power saving.

[0177] In one embodiment, a display device is also provided, which may include Figure 1-Figure 12 Any display module described above.

[0178] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0179] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0180] The above is a detailed introduction to a display module and a control method for the display module provided by the present disclosure. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method of the present disclosure and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present disclosure, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

[0181] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0182] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0183] References herein to "one embodiment," "embodiment," or "one or more embodiments" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present disclosure. In addition, please note that examples of the term "in one embodiment" do not necessarily all refer to the same embodiment.

[0184] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present disclosure can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0185] In the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present disclosure may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A display module, characterized in that: It includes a display panel and a backlight module for providing a backlight source for the display panel; The display panel comprises a display area, and the display area comprises a plurality of sub-pixels arranged in an array; The backlight module includes a plurality of light-emitting units, each of which includes a plurality of light-emitting elements that emit monochromatic light of different colors, and the light-emitting units correspond to a plurality of adjacent sub-pixels on the display panel; the plurality of light-emitting elements are configured to light up in a time-sharing manner; Among them, when the first light-emitting element in the light-emitting unit is illuminated, the total area occupied by the sub-pixels in the target display area of ​​the display area that are in a light-transmitting state is greater than the total area occupied by the sub-pixels in the light-transmitting state when the second light-emitting element is illuminated; the sub-pixels in the target display area correspond to the same display color, the monochromatic light emitted by the first light-emitting element is different from the monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element in the light-emitting unit except the first light-emitting element.

2. The display module according to claim 1, characterized in that: The plurality of light emitting elements include a green light emitting element, a red light emitting element and a blue light emitting element, and the first light emitting element is the green light emitting element.

3. The display module according to claim 1, characterized in that: When the first light emitting element is lit, the number of sub-pixels in the target display area that are in a light-transmitting state is greater than the number of sub-pixels in a light-transmitting state when the second light emitting element is lit.

4. The display module according to claim 3, characterized in that: The plurality of light emitting elements include a green light emitting element, a red light emitting element and a blue light emitting element; the first light emitting element is the green light emitting element; Among them, when the blue light emitting element is lit, the number of sub-pixels in the target display area that are in a light-transmitting state is equal to the number of sub-pixels in a light-transmitting state when the red light emitting element is lit.

5. The display module according to claim 3, characterized in that: Some sub-pixels in the target display area that are in a light-transmitting state when the first light-emitting element is turned on are also in a light-transmitting state when the second light-emitting element is turned on.

6. The display module according to claim 3, characterized in that: When the first light emitting element is lit, the sub-pixels in the target display area that are in a light-transmitting state are different from the sub-pixels that are in a light-transmitting state when the second light emitting element is lit.

7. The display module according to claim 6, characterized in that: The plurality of light emitting elements include a green light emitting element, a red light emitting element and a blue light emitting element; the first light emitting element is the green light emitting element; When the green light emitting element is lit, a plurality of first sub-pixels in the target display area are in a light-transmitting state; when the blue light emitting element is lit, a plurality of second sub-pixels in the target display area are in a light-transmitting state; when the red light emitting element is lit, a plurality of third sub-pixels in the target display area are in a light-transmitting state; The first sub-pixels, the second sub-pixels and the third sub-pixels are arranged periodically; and in one arrangement period, the number of the first sub-pixels is greater than the number of the second sub-pixels and the third sub-pixels.

8. The display module according to any one of claims 1 to 7, characterized in that: When the first light emitting element is lit, the aperture ratio of a single sub-pixel in the target display area that is in a light-transmitting state is greater than the aperture ratio of a single sub-pixel in a light-transmitting state when the second light emitting element is lit.

9. The display module according to claim 8, characterized in that: The plurality of sub-pixels include: a fourth sub-pixel, a fifth sub-pixel and a sixth sub-pixel; The fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel are periodically arranged in the display area, and the fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel correspond to different aperture ratios; When the first light-emitting element is turned on, the sub-pixel with the largest aperture ratio among the fourth sub-pixel, the fifth sub-pixel and the sixth sub-pixel is in the light-transmitting state.

10. The display module according to claim 8, characterized in that: When the first light emitting element is lit, the number of sub-pixels in the target display area that are in a light-transmitting state is equal to the number of sub-pixels in a light-transmitting state when the second light emitting element is lit.

11. A method for controlling a display module, characterized in that: Used to control the display module according to any one of claims 1 to 10, comprising: Determine a target display area in the picture to be displayed, where each sub-pixel in the target display area has the same display color; Splitting the display data of the display screen of the target display area into a plurality of sub-display data, each of the sub-display data corresponds to a color component in the display screen, and different color components correspond to light-emitting elements of different colors in the light-emitting unit; For each sub-display data, after controlling part of the sub-pixels in the target display area to be in a light-transmitting state, control the light-emitting element corresponding to the sub-display data to light up; In which, when the first light-emitting element in the light-emitting unit is illuminated, the total area occupied by the sub-pixels in the light-transmitting state in the target display area is greater than the total area occupied by the sub-pixels in the light-transmitting state when the second light-emitting element is illuminated, the monochromatic light emitted by the first light-emitting element is different from the monochromatic light emitted by the second light-emitting element, and the second light-emitting element is any light-emitting element in the light-emitting unit except the first light-emitting element.

12. The control method of the display module according to claim 11, characterized in that: For each of the sub-display data, controlling part of the sub-pixels in the target display area to be in a light-transmitting state comprises: Determine the current performance parameter of the target light emitting element corresponding to the sub-display data in the light emitting unit, wherein the performance parameter is used to characterize the correlation between the current magnitude and the light emitting brightness; Based on the performance parameter, determining a target number of sub-pixels to be transparent in the target display area; A target number of sub-pixels in the target display area are controlled to be in a light-transmitting state.

Images