WO2020224314A1

WO2020224314A1 - Field sequential display module, display device and control method for field sequential display module

Info

Publication number: WO2020224314A1
Application number: PCT/CN2020/077431
Authority: WO
Inventors: 孙川; 汪志强; 董学; 时凌云; 王雪绒; 陈雷; 马鑫; 芮博超; 王秋里; 姚建峰; 杨超; 胡国锋
Original assignee: 京东方科技集团股份有限公司; 北京京东方光电科技有限公司
Priority date: 2019-05-05
Filing date: 2020-03-02
Publication date: 2020-11-12
Also published as: CN109960082B; CN109960082A

Abstract

A field sequential display module, a display device and a control method for the field sequential display module. The field sequential display module comprises: a backlight module (300) used for cyclically turning on or off a plurality of monochromatic lights; a region adjustment panel (200) which is located on the backlight module (300); and a display panel (100) which is located on a side of the region adjustment panel (200) away from the backlight module (300), wherein the region adjustment panel (200) is used to adjust the transmittance of light, and an orthographic projection of a positive integer number of pixel points on the display panel (100) onto the region adjustment panel (200) coincides with an orthographic projection of one pixel point on the region adjustment panel (200) onto the region adjustment panel (200).

Description

Field sequential display module, display device and control method of field sequential display module

Cross references to related applications

This application claims the rights and interests of the Chinese patent application CN201910368509.4 filed on May 5, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of display technology, in particular, to a field sequential display module, a display device, and a control method of the field sequential display module.

Background technique

The structure of Liquid Crystal Display (LCD) is usually filled with liquid crystal between two parallel glass substrates. Thin Film Transistor (TFT) is provided on the lower glass substrate, and the color film layer is provided on the upper glass substrate. The signal and voltage on the TFT are changed to control the rotation direction of the liquid crystal molecules, so as to control whether the polarized light of each pixel point is emitted or not to achieve the purpose of display.

Contrast is an important indicator of liquid crystal display panels. The control ICs, filters and alignment films used in LCD manufacturing are all related to the contrast of liquid crystal display panels.

Public content

In the first aspect, embodiments of the present disclosure provide a field sequential display module, including:

Backlight module, used to turn on or off multiple monochromatic lights in cycles;

An area adjustment panel, the area adjustment panel is located on the backlight module; and

A display panel, the display panel is located on the side of the area adjustment panel away from the backlight module,

Wherein, the area adjustment panel is used to adjust the transmittance of light, and the orthographic projection of a positive integer number of pixels on the display panel on the area adjustment panel and one pixel on the area adjustment panel are in the same position. The orthographic projections on the area adjustment panel coincide.

In some embodiments of the present disclosure, the field sequential display module does not include a color filter layer.

In some embodiments of the present disclosure, the orthographic projection of a pixel on the display panel on the area adjustment panel coincides with the orthographic projection of a pixel on the area adjustment panel on the area adjustment panel.

In some embodiments of the present disclosure, an upper polarizer is provided on the side of the display panel facing away from the area adjustment panel, and a lower polarizer is provided on the side of the area adjustment panel facing the backlight module.

In some embodiments of the present disclosure, the backlight module includes a plurality of light emitting diodes.

In some embodiments of the present disclosure, the plurality of light emitting diodes include red light diodes, green light diodes, and blue light diodes.

In some embodiments of the present disclosure, the backlight module includes a plurality of sub-millimeter light emitting diodes.

In some embodiments of the present disclosure, the plurality of sub-millimeter light-emitting diodes include red sub-millimeter light-emitting diodes, green sub-millimeter light-emitting diodes, and blue sub-millimeter light-emitting diodes.

In some embodiments of the present disclosure, the display panel includes:

A first substrate and a second substrate disposed oppositely;

A first liquid crystal layer located between the first substrate and the second substrate; and

A plurality of thin film transistors arranged in a matrix arranged on the side of the second substrate facing the first liquid crystal layer;

The area adjustment panel includes:

A third substrate and a fourth substrate disposed oppositely;

A second liquid crystal layer located between the third substrate and the fourth substrate; and

A plurality of thin film transistors arranged in a matrix arranged on the side of the fourth substrate facing the second liquid crystal layer,

Wherein, the fourth substrate is arranged on a side of the first substrate away from the first liquid crystal layer.

In some embodiments of the present disclosure, the thin film transistor provided on the fourth substrate is used to drive the second liquid crystal layer to control the light transmission ratio of each frame, and the thin film transistor provided on the second substrate is used for The first liquid crystal layer is driven to control the display of a monochrome image.

In some embodiments of the present disclosure, the display panel includes:

A first substrate and a second substrate disposed oppositely;

The area adjustment panel includes:

A third substrate arranged opposite to the first substrate;

A second liquid crystal layer located between the first substrate and the third substrate; and

A plurality of thin film transistors arranged in a matrix are arranged on the side of the third substrate facing the second liquid crystal layer.

In some embodiments of the present disclosure, the thin film transistor provided on the third substrate is used to drive the second liquid crystal layer to control the light transmission ratio of each frame, and the thin film transistor provided on the second substrate is used for The first liquid crystal layer is driven to control the display of a monochrome image.

In some embodiments of the present disclosure, the display panel further includes transparent conductive films disposed on both sides of the first liquid crystal layer, and the area adjustment panel further includes transparent conductive films disposed on both sides of the second liquid crystal layer.

In some embodiments of the present disclosure, the display panel and the area adjustment panel are adjusted independently of each other.

In a second aspect, an embodiment of the present disclosure provides a display device including the field sequential display module according to any one of the first aspect of the present disclosure.

In a third aspect, an embodiment of the present disclosure provides a method for controlling a field sequential display module for controlling the field sequential display module according to any one of the first aspect of the present disclosure, including:

The display panel obtains the video signal, and converts the image frames in the video signal into three basic monochrome image frames;

The area adjustment panel adjusts the brightness of each pixel included in the area adjustment panel according to a predetermined algorithm;

The backlight module receives the light source control signal from the display panel, turns on or off the monochromatic light, so as to control the display or turn off of the basic monochromatic image frame.

In some embodiments of the present disclosure, the predetermined algorithm includes identifying gray levels on different regions of the image frame, and adjusting the brightness of each pixel according to a result of the gray level recognition.

In some embodiments of the present disclosure, acquiring the video signal by the display panel, and converting the image frames in the video signal into three basic monochrome image frames includes: a lighting machine sends the video signal to the The flexible circuit board of the display panel, the chip in the display panel converts the image frame in the video signal into three basic monochrome image frames, wherein the monochrome image frame rate is 3 times the color display frame rate.

In some embodiments of the present disclosure, the signal of the area adjustment panel is generated by the chip of the display panel, or the signal of the area adjustment panel is directly generated by the lighting machine.

Additional aspects and advantages of the present disclosure will be partially given in the following description, which will become obvious from the following description, or be understood through the practice of the present disclosure.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings that need to be used in the description of the embodiments of the present disclosure.

FIG. 1 is a schematic structural diagram of a field sequential display module provided by an embodiment of the disclosure;

2 is a schematic structural diagram of a field sequential display module provided by an embodiment of the disclosure;

3 is a schematic structural diagram of a display panel and an area adjustment panel provided by an embodiment of the disclosure;

4 is a schematic structural diagram of a display panel and an area adjustment panel provided by an embodiment of the disclosure;

FIG. 5 is a flowchart of a method for controlling a field sequential display module provided by an embodiment of the disclosure;

6 is a schematic diagram of the principle of a field sequential display control method provided by an embodiment of the disclosure; and

FIG. 7 is a schematic diagram of the principle of a field sequential display control method provided by an embodiment of the disclosure.

Detailed ways

The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present disclosure, and cannot be construed as limiting the present disclosure.

Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present disclosure refers to the presence of the described features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may also be present. In addition, “connected” or “coupled” used herein may include wireless connection or wireless coupling. The term "and/or" as used herein includes all or any unit and all combinations of one or more associated listed items.

In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the embodiments of the present disclosure in detail with reference to the accompanying drawings. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

For traditional LCDs, the process of improving contrast is relatively difficult. In addition, in the LCD, the color film layer will block about 70% of the light, which will result in the low transmittance of the LCD, and the transmittance will directly affect the power consumption of the LCD. Due to the low transmittance, in order to ensure the display effect, It will inevitably increase the power consumption of the LCD. Based on this, in order to improve at least one of the above problems, the present application provides a field sequential display module, a display device, and a control method of the field sequential display module.

Firstly, the field sequential display mentioned in the embodiment of the present disclosure is introduced. The field sequential display refers to the use of RGB backlight, and the backlight R, G, and B are cyclically lit, and color display can be realized without a color film.

In the first aspect, an embodiment of the present disclosure provides a field sequential display module. As shown in FIG. 1, the field sequential display module includes: a display panel (Display Panel) 100, and a regional adjustment panel (Local Dimming Panel) 200和Backlight module 300. The display panel 100 is stacked on the area adjustment panel 200, and the area adjustment panel 200 is used to adjust the light transmittance. The orthographic projection of a positive integer number of pixels on the display panel 100 on the area adjustment panel 200 coincides with one pixel on the area adjustment panel 200. The backlight module 300 is disposed on the side of the area adjustment panel 200 that faces away from the display panel 100, and is used to cyclically turn on or turn off the monochromatic light so as to display an image on the display panel 100.

The field sequential display module provided by the embodiments of the present disclosure realizes color display by cyclically turning on or turning off the monochromatic light by the backlight module. The display panel 100 does not need to be separately provided with a color film layer, thereby improving the light transmittance of the screen. Compared with the way of realizing color display with color film, it can reduce the power consumption of the device while ensuring the display effect. In addition, the field sequential display module provided in the embodiment of the present disclosure includes a display panel 100 and an area adjustment panel 200. The display panel 100 and the area adjustment panel 200 can be adjusted independently, and the cooperation between the display panel 100 and the area adjustment panel 200 can achieve transparency. The coordination of the overrate adjustment and the display effect can achieve high contrast and high transmittance; because the positive integer number of pixels on the display panel 100 is projected on the area adjustment panel 200 and the area adjustment panel 200 is overlapped with a pixel point on the area adjustment panel 200, In addition, the display panel 100 and the area adjustment panel 200 will not affect each other during display, which is closer to the display effect of the organic light emitting display panel.

The correspondence between the pixel points on the area adjustment panel 200 and the display panel 100 can be explained more clearly in another way: n pixels on the display panel 100 correspond to one pixel point on the area adjustment panel 200, where n is 1, 2, 3... and other positive integers. For example, when the pixels on the display panel 100 are small squares, if n=2, the two pixels corresponding to the two adjacent small squares on the display panel 100 are the same as one rectangular pixel on the area adjustment panel 200. Point correspondence, the contour shape of the rectangular pixel point is just the contour shape formed by the splicing of two small squares. Of course, the above example is only to illustrate the correspondence between the pixels on the area adjustment panel 200 and the pixels on the display panel 100, and does not mean that the pixels must be square or rectangular, and may also be circles, triangles, or polygons.

As an optional solution, the orthographic projection of a pixel on the display panel 100 on the area adjustment panel 200 coincides with a pixel on the area adjustment panel 200, that is, in the case of n=1, the display panel 100 The pixel points correspond to the pixel points of the area adjustment panel 200 in a one-to-one manner. Assuming that the color depth of each screen is 8bit and can generate 0-255 gray scales, theoretically, the color of the field sequential display module provided by the embodiment of the present disclosure The depth is 8bit*8bit, that is, 0-65535 grayscale. When n=1, the effect of local dimming is the most refined, and high color depth can be achieved.

When n>1, a single pixel on the screen cannot achieve high color depth, but the regional adjustment (Local Dimming) effect can be achieved according to the algorithm. The fineness of the partition is related to the value of n. The smaller the value of n, the finer the effect of Local Dimming. The lower the transmittance of the adjustment panel 200 is. Therefore, in the design process, it is necessary to balance the local Dimming requirements and the power consumption requirements of the module according to the actual application, and adjust the area to adjust the light transmittance of the panel 200.

In addition, when adjusting the grayscale brightness, the luminance meter is placed above the field sequential display module, and the grayscale brightness is adjusted by changing the liquid crystal deflection voltage under different grayscales of the field sequential display module. Since the display panel 100 and the area adjustment panel 200 can be individually lit, the adjustment of the Gamma curve is the same as that of a conventional TFT-LCD, but the Gamma curve of the display panel 100 and the area adjustment panel 200 can be overlapped more easily.

As shown in FIG. 1, the display panel 100 is provided with an upper polarizer 140 on the side facing the area adjustment panel 200, and the area adjustment panel 200 is provided with a lower polarizer 240 on the side facing the backlight module 300.

In an optional technical solution, as shown in FIG. 1 and FIG. 2, the backlight module 300 includes several light emitting diodes (LED) 310 or several millimeter light emitting diodes (mini LED) 320. Since the sub-millimeter light-emitting diode 320 can be partially lit, its partitioned display effect will be better, which is more conducive to the function of the area adjustment panel 200 and produces a better display effect.

In some embodiments of the present disclosure, the light-emitting color of the light-emitting diode is red (R), green (G) or blue (B); or, the light-emitting color of the sub-millimeter light-emitting diode used is red, green or blue. Since the field sequential display module provided by the embodiment of the present disclosure does not use a color film, the color display is realized by the combination of three monochromatic lights.

In the embodiment of FIG. 1, the backlight module 300 includes light emitting diodes 310; the display panel 100 includes: a first substrate 110 and a second substrate 130 disposed opposite to each other, and a first substrate located between the first substrate 110 and the second substrate 130; The liquid crystal layer 120 and the upper polarizer 140 disposed on the side of the second substrate 130 facing away from the first liquid crystal layer 120, wherein the first substrate 110 is on the bottom and the second substrate 130 is on the top; the area adjustment panel 200 includes: a third substrate 210 , The second liquid crystal layer 220 located between the third substrate 210 and the first substrate 110 of the display panel 100, and the lower polarizer 240 disposed on the side of the third substrate 210 facing away from the second liquid crystal layer 220, wherein the third substrate 210 is below, and the area adjustment panel 200 shares the first substrate 110 of the display panel 100. The area adjustment panel 200 is disposed between the backlight module 300 and the display panel 100.

The difference between the field sequential display module in FIG. 2 and the field sequential display module in FIG. 1 is that the backlight module 300 uses sub-millimeter light emitting diodes 320 instead of light emitting diodes 310.

In an alternative embodiment, as shown in FIG. 3, the display panel 100 includes: a first substrate 110 and a second substrate 130 disposed oppositely, and a first liquid crystal located between the first substrate 110 and the second substrate 130. A plurality of thin film transistors 150 (schematically shown) arranged in a matrix are provided on the side of the second substrate 130 facing the first liquid crystal layer 120. The area adjustment panel 200 includes: a third substrate 210 and a fourth substrate 230 disposed opposite to each other, and a second liquid crystal layer 220 located between the third substrate 210 and the fourth substrate 230. The fourth substrate 230 faces the second liquid crystal layer 220. A number of thin film transistors 250 (schematically shown) arranged in a matrix are arranged on one side; the fourth substrate 230 is arranged on the side of the first substrate 110 away from the first liquid crystal layer 120. The manufacturing process of the field sequential display module provided in this embodiment includes: separately manufacturing the display panel 100 and the area adjustment panel 200, and then accurately align the respective pixels of the display panel 100 and the area adjustment panel 200.

The field sequential display module provided by the embodiment of the present disclosure includes 2 liquid crystal layers and 2 thin film transistors arranged in a matrix. The thin film transistor 250 provided on the fourth substrate 230 controls the light transmission ratio of each frame of the picture to realize the local Dimming effect. , And the thin film transistor 150 provided on the second substrate 130 is used to control the display of red, green and blue monochromatic images, combined with the backlight module 300 that can make the red, green and blue monochromatic light cyclically lit, the field of the embodiment of the present disclosure The sequential display module has the characteristics of high contrast, high color depth, and high transmittance. It can be combined with image processing algorithms to use liquid crystal display (LCD) to achieve high dynamic range image (High-Dynamic Range, referred to as HDR) effects, compared with ordinary The image can provide more dynamic range and image details.

In another alternative embodiment, as shown in FIG. 4, the display panel 100 includes: a first substrate 110 and a second substrate 130 disposed opposite to each other, and a first substrate 110 and a second substrate 130 located between the first substrate 110 and the second substrate 130. In the liquid crystal layer 120, a number of thin film transistors 150 arranged in a matrix are provided on the side of the second substrate 130 facing the first liquid crystal layer 120. The area adjustment panel 200 includes a third substrate 210 disposed opposite to the first substrate 110, and a second liquid crystal layer 220 located between the first substrate 110 and the third substrate 210. The third substrate 210 faces the second liquid crystal layer 220. A number of thin film transistors 250 arranged in a matrix are provided on one side. The manufacturing process of the field sequential display module provided in this embodiment includes: after the manufacturing of the display panel 100 is completed, an alignment film is disposed on the underside of the first substrate 110, and then a third substrate 210 including a plurality of thin film transistors arranged in a matrix is manufactured. Then, the first substrate 110 and the third substrate 210 are aligned, and the pixel points corresponding to the display panel 100 and the area adjustment panel 200 need to be accurately aligned during the assembly process. The number of substrates used in the field sequential display module provided by this embodiment is small, which can make the field sequential display module lighter and thinner.

As shown in FIGS. 3 and 4, the second substrate 130 provided by the embodiment of the present disclosure may use a glass substrate for aligning with the first substrate 110 below, so as to be between the first substrate 110 and the second substrate 130. The liquid crystal layer is formed. The field sequential display module includes two liquid crystal layers and two thin film transistors arranged in a matrix. The thin film transistors respectively drive corresponding layers of liquid crystal. For example, the thin film transistors arranged on the second substrate 130 are used to drive the first liquid crystal layer 120, as shown in FIG. 3 The thin film transistor provided on the fourth substrate 230 in the middle or the thin film transistor provided on the third substrate 210 in FIG. 4 is used to drive the second liquid crystal layer 220. RGB chips are packaged in the backlight module 300, which can drive R, G, and B monochromatic lights to light up respectively.

In addition, as shown in FIGS. 3 and 4, the display panel 100 and the area adjustment panel 200 are also provided with a transparent conductive film 400 and an orientation layer. The transparent conductive film 400 can be made of ITO (tin doped indium trioxide) or AZO (aluminum doped Hetero zinc oxide) and so on. The thin film transistor matrix design in this solution is the same as the existing thin film transistor matrix design process, and no special process is required to realize it. The first substrate 110, the second substrate 130, the third substrate 210, the fourth substrate 230, etc. described above can all be made of glass substrates.

In a second aspect of the embodiments of the present disclosure, a display device is provided, and this display device includes the field sequential display module in each of the embodiments provided in the first aspect of the present disclosure. The light transmittance of the screen in the display device provided by the embodiment of the present disclosure is high, and compared with the way of realizing color display with a color film, the device has lower power consumption on the basis of a good display effect.

In addition, the display panel 100 and the area adjustment panel 200 included in the display device can be adjusted independently. The cooperation between the display panel 100 and the area adjustment panel 200 can achieve the coordination of transmittance adjustment and display effect, and can better adapt to the actual situation of different use occasions. Usage requirements.

In the third aspect, the embodiments of the present disclosure provide a method for controlling the field sequential display module, which is used to control the field sequential display module as described in the various embodiments provided in the first aspect of the present disclosure, as shown in FIG. 5, The control method includes:

S10: The display panel 100 obtains the video signal, and converts the image frames in the video signal into three basic monochrome image frames;

S20: the area adjustment panel 200 adjusts the brightness of each pixel included in the area adjustment panel 200 according to a predetermined algorithm;

S30: The backlight module 300 receives the light source control signal from the display panel 100, and turns on or off the monochromatic light to control the display or turn off of the basic monochromatic image frame.

As shown in Figure 6, when displaying a frame of H×W (height×width) image, the lighter sends a video signal to the flexible circuit board (FPC) of the display panel 100, and the chip (IC) in the display panel 100 converts the video The image frame in the signal is converted into three kinds of monochrome image frame display of R, G, B. At this time, the monochrome image frame rate is required to be 3 times the color display frame rate, that is, when the screen display frame rate is 60Hz, monochrome image is required The frame rate is 180Hz.

The signal of the area adjustment panel 200 is generated by the IC of the display panel 100, as shown in FIG. 6, or the signal of the area adjustment panel 200 is directly generated by the lighting machine, as shown in FIG. 7, the generated signal of the area adjustment panel 200 is sent to The area adjusts the FPC of the panel 200. The area adjustment panel 200 adjusts the brightness of each pixel on the area adjustment panel 200 based on the image to be displayed, and presents the corresponding grayscale image generated by the algorithm.

Since there is a corresponding relationship between the pixel points of the display panel 100 and the pixel points of the area adjustment panel 200, the resolution of the area adjustment panel 200 is H/n×W/n, where n represents the number of pixels in each Local Dimming partition, n≥ 1. Since the grayscale image of the area adjustment panel 200 is also expressed as low grayscale at the low grayscale of the displayed image, and high grayscale is also expressed as high grayscale at the high grayscale, the difference between light and dark of the displayed image is more obvious, thus improving The role of LCD contrast.

In one of the feasible embodiments, the predetermined algorithm used in the area adjustment panel 200 includes grayscale recognition on different areas of the image frame, and adjusts the brightness of each pixel according to the result of the grayscale recognition, that is, the predetermined algorithm can Recognize the picture, adjust the gray scale of each area on the image frame adaptively according to the picture content, and further improve the fineness of contrast adjustment.

The light bar of the backlight module 300 receives the light source (LED) on or off signal from the display panel 100. When the screen displays a red image, the red chip in the backlight module 300 is turned on to emit light, and the blue and green chips are turned off and do not emit light. . In the same way, the display of blue and green images is the same as the above, so that the color display of the image is realized in the entire field sequential display module range.

Based on the structural solution proposed in the present disclosure, the transmittance performance of each layer is compared with that of the common liquid crystal display module as shown in Table 1:

Table 1

Among them, UP POL is the upper polarizer, Down Pol is the lower polarizer, BLU is the backlight module, CF is the color film layer, LC is the liquid crystal layer, and GLASS is the glass substrate. In Table 1, assuming that the luminous efficiency of the white LED in the backlight of the traditional liquid crystal display module is 100% and the aperture ratio of the TFT is 53%, the screen transmittance is calculated to be about 5%. For the field sequential display module proposed in the embodiment of the present disclosure, the LED luminous efficiency of the RGB chip in the backlight module 300 is about 70% of that of the white LED. Since the screen does not require sub-pixels, theoretically the TFT aperture ratio can be increased by 33% After calculation, the transmittance is about 9%, which theoretically increases the transmittance by 80% compared to traditional liquid crystal display modules. If n>1, that is, the number of Local Dimming partitions is smaller than the screen resolution of the display panel 100, the transmittance can be further improved.

The beneficial effects brought about by the technical solutions provided by the embodiments of the present disclosure are:

Color display is realized by using the backlight module to cyclically turn on or turn off the monochromatic light. The display panel does not need to be separately provided with a color film layer, which improves the light transmittance of the screen. Compared with the color display method using color film, it can On the basis of ensuring the display effect, the power consumption of the LCD is reduced; furthermore, the display panel and the area adjustment panel in the field sequential display module provided by the embodiments of the present disclosure can be adjusted independently, and the two can cooperate to achieve transmittance adjustment Coordination with the display effect can achieve high contrast and high transmittance, so that the field sequential display module can better adapt to the needs of different use occasions. In addition, since the orthographic projection of a positive integer number of pixels on the display panel on the area adjustment panel coincides with a pixel point on the area adjustment panel, the display panel and the area adjustment panel will not affect each other during display, which is closer to organic light emitting display. The display effect of the panel.

It should be understood that, although the various steps in the flowchart of the drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless specifically stated in this article, the execution of these steps is not strictly limited in order, and they can be executed in other orders. Moreover, at least part of the steps in the flowchart of the drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the order of execution is also It is not necessarily performed sequentially, but may be performed alternately or alternately with other steps or at least a part of sub-steps or stages of other steps.

The above are only part of the embodiments of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present disclosure, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of this disclosure.

Claims

A field sequential display module, including:

Backlight module, used to turn on or off multiple monochromatic lights in cycles;

An area adjustment panel, the area adjustment panel is located on the backlight module; and

A display panel, the display panel is located on the side of the area adjustment panel away from the backlight module,

Wherein, the area adjustment panel is used to adjust the transmittance of light, and the orthographic projection of a positive integer number of pixels on the display panel on the area adjustment panel and one pixel on the area adjustment panel are in the same position. The orthographic projections on the area adjustment panel coincide.
4. The field sequential display module of claim 1, wherein the field sequential display module does not include a color filter layer.
The field sequential display module according to claim 1, wherein the orthographic projection of a pixel on the display panel on the area adjustment panel and a pixel on the area adjustment panel are on the area adjustment panel The orthographic projections on coincide.
The field sequential display module according to any one of claims 1-3, wherein an upper polarizer is provided on the side of the display panel facing away from the area adjustment panel, and the area adjustment panel faces the backlight module A lower polarizer is provided on one side of the group.
5. The field sequential display module according to any one of claims 1 to 3, wherein the backlight module comprises a plurality of light emitting diodes.
5. The field sequential display module of claim 5, wherein the plurality of light emitting diodes include red light diodes, green light diodes and blue light diodes.
5. The field sequential display module according to any one of claims 1 to 3, wherein the backlight module comprises a plurality of sub-millimeter light emitting diodes.
8. The field sequential display module according to claim 7, wherein the plurality of sub-millimeter light-emitting diodes comprise red sub-millimeter light-emitting diodes, green sub-millimeter light-emitting diodes, and blue sub-millimeter light-emitting diodes.
The field sequential display module according to any one of claims 1-3, wherein the display panel comprises:

A first substrate and a second substrate disposed oppositely;

A first liquid crystal layer located between the first substrate and the second substrate; and

A plurality of thin film transistors arranged in a matrix arranged on the side of the second substrate facing the first liquid crystal layer;

The area adjustment panel includes:

A third substrate and a fourth substrate disposed oppositely;

A second liquid crystal layer located between the third substrate and the fourth substrate; and

A plurality of thin film transistors arranged in a matrix arranged on the side of the fourth substrate facing the second liquid crystal layer,

Wherein, the fourth substrate is arranged on a side of the first substrate away from the first liquid crystal layer.
9. The field sequential display module according to claim 9, wherein the thin film transistor provided on the fourth substrate is used to drive the second liquid crystal layer to control the light transmission ratio of each frame of picture, and the second substrate is The provided thin film transistor is used to drive the first liquid crystal layer to control the display of a monochrome image.
The field sequential display module according to any one of claims 1-3, wherein the display panel comprises:

A first substrate and a second substrate disposed oppositely;

A first liquid crystal layer located between the first substrate and the second substrate; and

A plurality of thin film transistors arranged in a matrix arranged on the side of the second substrate facing the first liquid crystal layer;

The area adjustment panel includes:

A third substrate arranged opposite to the first substrate;

A second liquid crystal layer located between the first substrate and the third substrate; and

A plurality of thin film transistors arranged in a matrix are arranged on the side of the third substrate facing the second liquid crystal layer.
11. The field sequential display module according to claim 11, wherein a thin film transistor provided on the third substrate is used to drive the second liquid crystal layer to control the light transmission ratio of each frame of the picture, and the second substrate is The provided thin film transistor is used to drive the first liquid crystal layer to control the display of a monochrome image.
The field sequential display module according to claim 9, wherein the display panel further comprises transparent conductive films arranged on both sides of the first liquid crystal layer, and the area adjustment panel further comprises transparent conductive films arranged on both sides of the second liquid crystal layer. Transparent conductive film.
3. The field sequential display module according to any one of claims 1 to 3, wherein the display panel and the area adjustment panel are adjusted independently of each other.
A display device comprising the field sequential display module according to any one of claims 1-14.
A control method of a field sequential display module for controlling the field sequential display module according to any one of claims 1-14, comprising:

The display panel obtains the video signal, and converts the image frames in the video signal into three basic monochrome image frames;

The area adjustment panel adjusts the brightness of each pixel included in the area adjustment panel according to a predetermined algorithm;

The backlight module receives the light source control signal from the display panel, turns on or off the monochromatic light, so as to control the display or turn off of the basic monochromatic image frame.
The method for controlling a field sequential display module according to claim 16, wherein the predetermined algorithm includes identifying gray levels on different regions of the image frame, and adjusting the gray levels according to the result of the gray level recognition. The brightness of each pixel.
The control method of the field sequential display module according to claim 16, wherein the display panel obtains the video signal, and converts the image frames in the video signal into three basic monochrome image frames including: lighting The machine sends the video signal to the flexible circuit board of the display panel, and the chip in the display panel converts the image frame in the video signal into three basic monochrome image frames, wherein the monochrome image frame rate It is 3 times of the color display frame rate.
The control method of the field sequential display module according to claim 18, wherein the signal of the area adjustment panel is generated by the chip of the display panel, or the signal of the area adjustment panel is directly generated by the lighting machine .