CN219245904U - Display device - Google Patents

Abstract

The application provides a display device, the display device includes display panel and backlight unit, display panel set up in the light-emitting side of backlight unit. The backlight module has a backlight frequency, and the backlight frequency of the backlight module is a non-integer multiple of the frame frequency of the display panel. Therefore, by setting the backlight frequency of the backlight module to be a non-integer multiple of the frame frequency of the display panel, even when the storage capacitor changes under the backlight illumination of the backlight module, the display panel has bright and dark alternate stripes, so that the human eyes can not perceive that water waves appear on the display panel, and the product taste and the visual experience of users are improved.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

In recent years, a submillimeter Light-Emitting Diode (Mini LED) display has been actively developed, which mainly comprises a Mini LED backlight module and a liquid crystal display panel. The Mini LED backlight module combines the quantum dot technology and the backlight massive partition technology, so that the MiniLED display has better picture quality, and has the advantages of lower cost, higher reliability, longer service life and the like, and the combination of the Mini LED backlight module and the liquid crystal display panel is widely cited.

The liquid crystal display panel generally includes a color film substrate, an array substrate, and liquid crystal disposed between the color film substrate and the array substrate, wherein an electric field for driving the liquid crystal to deflect is formed between a common electrode of the color film substrate and a pixel electrode of the array substrate, so as to realize that the liquid crystal display panel displays different images. The array substrate is also provided with a storage capacitor for maintaining the potential of the pixel electrode, and the charge quantity of the storage capacitor is changed under the backlight illumination of the Mini LED backlight module, so that the potential of the pixel electrode is reduced, and the liquid crystal display panel is darkened; when no backlight is irradiated, the potential of the pixel electrode increases, and the liquid crystal display panel becomes bright. Because the backlight of the Mini LED backlight module is frequent, the brightness change of the liquid crystal display panel is also frequent, so that water ripple easily appears on the liquid crystal display panel, and the visual experience of a user is poor.

Therefore, how to solve the problem that the water ripple phenomenon appears on the display panel due to the change of the charge amount of the storage capacitor caused by the backlight of the Mini LED backlight module is a urgent need for a person skilled in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present application is to provide a display device, which is aimed at solving the problem that in the prior art, a moire phenomenon occurs on a display panel due to the change of the charge amount of a storage capacitor caused by the backlight of a Mini LED backlight module.

In order to solve the above technical problems, an embodiment of the present application provides a display device, which includes a display panel and a backlight module, wherein the display panel is disposed on a light emitting side of the backlight module. The backlight module has a backlight frequency, and the backlight frequency of the backlight module is a non-integer multiple of the frame frequency of the display panel.

In summary, the display device provided in the embodiments of the present application includes a display panel and a backlight module, where the display panel is disposed on a light emitting side of the backlight module. The backlight module has a backlight frequency, and the backlight frequency of the backlight module is a non-integer multiple of the frame frequency of the display panel. Therefore, by setting the backlight frequency of the backlight module to be a non-integer multiple of the frame frequency of the display panel, even when the storage capacitor changes under the backlight illumination of the backlight module, the display panel has bright and dark alternate stripes, so that the human eyes can not perceive that water waves appear on the display panel, and the product taste and the visual experience of users are improved.

In an exemplary embodiment, the display panel includes a color substrate and an array substrate that are stacked, and a liquid crystal layer disposed between the color substrate and the array substrate, where the array substrate is located on the backlight module, and the color substrate is located on a side of the array substrate opposite to the backlight module.

In an exemplary embodiment, the color substrate includes a first substrate disposed opposite to the array substrate, and a common electrode disposed at a side of the first substrate facing the array substrate. The array substrate comprises a second substrate, a plurality of pixel electrodes, an array substrate common electrode, an insulating layer and a semiconductor layer, wherein the array substrate common electrode is arranged on one side of the second substrate facing the first substrate, the insulating layer covers the array substrate common electrode on the second substrate, the semiconductor layer is arranged on one side of the insulating layer opposite to the array substrate common electrode, and the pixel electrode is arranged on one side of the semiconductor layer opposite to the insulating layer. The liquid crystal layer comprises a plurality of liquid crystal molecules, and a preset electric field for driving the liquid crystal molecules to deflect is formed between the common electrode and the pixel electrode.

In an exemplary embodiment, the orthographic projection of the semiconductor layer on the second substrate is located within the orthographic projection of the array substrate common electrode on the second substrate.

In an exemplary embodiment, the potential of the array substrate common electrode is 8V to 10V.

In an exemplary embodiment, the display panel further includes a plurality of sub-pixels including a display region and a non-display region disposed adjacently, and the array substrate common electrode and the semiconductor layer are located in the non-display region. The backlight module comprises a light-emitting area and a non-light-emitting area, wherein the position of the light-emitting area corresponds to the position of the display area, and the position of the non-light-emitting area corresponds to the position of the non-display area.

In an exemplary embodiment, the backlight module further includes a plurality of light shielding layers disposed at a side of the non-light emitting region facing the non-display region.

In an exemplary embodiment, the backlight module further includes a frame rate detection module and a backlight control module, the frame rate detection module detects a frame rate of the display panel, and the backlight control module controls a backlight frequency of the backlight module according to the frame rate of the display panel.

In an exemplary embodiment, the display panel further includes a plurality of scan lines transmitting scan signals, and the frame rate detection module is electrically connected to the scan lines to detect a frame rate of the display panel; or, the display panel further includes a driving module for providing a scan signal and a data signal, and the frame frequency detecting module is electrically connected with the driving module to detect the frame frequency of the display panel.

In an exemplary embodiment, the backlight frequency of the backlight module is 1.4 to 1.6 times the frame frequency of the display panel.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic layer structure of a display device according to an embodiment of the present disclosure;

fig. 2 is a schematic circuit diagram of a display panel of the display device shown in fig. 1;

FIG. 3 is a schematic diagram illustrating a first state of a storage capacitor according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating a second state of a storage capacitor according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a display panel according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a display panel according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another principle of water ripple of the display panel according to the embodiment of the present disclosure;

fig. 8 is a schematic diagram of a display panel according to an embodiment of the present disclosure, in which no water ripple occurs;

fig. 9 is a schematic structural diagram of a subpixel of a display panel according to an embodiment of the present disclosure.

Reference numerals illustrate:

001-a first direction; 002-a second direction; 1-a display device; 10-a display panel; 30-a backlight module; 31-a frame frequency detection module; 33-a backlight control module; 11-a color substrate; 111-a first substrate; 113-a common electrode; 13-an array substrate; 131-a second substrate; 133-pixel electrode; 135-a drive transistor; 137-array substrate common electrode; 138-an insulating layer; 139-a semiconductor layer; 15-a liquid crystal layer; 151-liquid crystal molecules; 301-a light emitting region; 302-non-light emitting areas; 303-a light shielding layer; sp-subpixels; sp 1-display region; sp 2-non-display region; clc-liquid crystal capacitance; cst—storage capacitor; GL-scan lines; a DL-data line; a-bright stripes; b-dark streaks.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms referred to in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are merely directions referring to the attached drawings, and thus, directional terms are used for better, more clear description and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprises," "comprising," "includes," "including," "may be" or "including" as used in this application mean the presence of the corresponding function, operation, element, etc. disclosed, but not limited to other one or more additional functions, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. It will also be understood that the meaning of "at least one" as described herein is one and more, such as one, two or three, etc., and the meaning of "a plurality" is at least two, such as two or three, etc., unless specifically defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Referring to fig. 1, fig. 1 is a schematic layer structure of a display device according to an embodiment of the disclosure. The display device 1 provided in the embodiment of the present application may at least include a display panel 10 and a backlight module 30, where the display panel 10 is disposed on a light emitting side of the backlight module 30, and the display panel 10 is configured to display an image under backlight provided by the backlight module 30.

In an exemplary embodiment, the backlight module 30 may be a sub-millimeter Light-Emitting Diode (Mini LED) backlight module.

In this embodiment, the display panel 10 may at least include a color substrate 11 and an array substrate 13 that are stacked, and a liquid crystal layer 15 that is disposed between the color substrate 11 and the array substrate 13, where the array substrate 13 is located on the backlight module 30, and the color substrate 11 is disposed on a side of the array substrate 13 opposite to the backlight module 30 and is spaced apart from the array substrate 13 by a preset distance. The array substrate 13 is used for controlling the electric signals, and the color substrate 11 is used for displaying colors.

In an exemplary embodiment, the color substrate 11 includes a first substrate 111 and a common electrode 113, the first substrate 111 is disposed opposite to the array substrate 13, and the common electrode 113 is disposed at a side of the first substrate 111 facing the array substrate 13. The array substrate 13 includes a second substrate 131 and a plurality of pixel electrodes 133, the second substrate 131 is disposed opposite to the first substrate 111 at intervals, and the plurality of pixel electrodes 133 are arrayed on a side of the second substrate 131 facing the first substrate 111. The liquid crystal layer 15 includes a plurality of liquid crystal molecules 151, and a predetermined electric field is formed between the common electrode 113 and the pixel electrode 133, and the predetermined electric field drives the liquid crystal molecules 151 to deflect, so as to display different images on the display panel 10.

In an exemplary embodiment, both the first substrate 111 and the second substrate 131 may be glass substrates.

It will be appreciated that the display device 1 may be used in electronic devices including, but not limited to, tablet computers, notebook computers, desktop computers, and the like. According to the embodiment of the present utility model, the specific type of the display device 1 is not particularly limited, and a person skilled in the art can correspondingly design according to the specific use requirement of the application of the display device 1, which is not described herein.

In an exemplary embodiment, the display device 1 may further include other necessary components and constituent parts such as a driving board, a power board, a high-voltage board, and a key control board, which can be correspondingly supplemented by those skilled in the art according to the specific type and actual function of the display device 1, and will not be described herein.

Referring to fig. 2 together, fig. 2 is a schematic circuit diagram of a display panel of the display device shown in fig. 1. In this embodiment, the array substrate 13 further includes a plurality of scan lines GL and a plurality of data lines DL, the plurality of scan lines GL extend along a first direction 001 and are sequentially arranged at intervals in parallel along a second direction 002, and the plurality of data lines DL extend along the second direction 002 and are sequentially arranged at intervals in parallel along the first direction 001. It is understood that one of the scan lines GL intersects the plurality of data lines DL, and one of the data lines DL intersects the plurality of scan lines GL.

In an exemplary embodiment, the first direction 001 is perpendicular to the second direction 002.

In this embodiment, the array substrate 13 further includes a plurality of driving transistors 135, where the driving transistors 135 are disposed at intersections of the scanning lines GL and the data lines DL, and one of the driving transistors 135 is electrically connected to one of the scanning lines GL, one of the data lines DL, and one of the pixel electrodes 133, respectively.

Specifically, the gate electrode of the driving transistor 135 is electrically connected to the scanning line GL, the source electrode of the driving transistor 135 is electrically connected to the data line DL, and the drain electrode of the driving transistor 135 is connected to the pixel electrode 133.

In this embodiment, the display panel 10 further includes a liquid crystal capacitor Clc and a storage capacitor Cst, the array substrate 13 includes an array substrate common electrode 137, two connection ends of the liquid crystal capacitor Clc are electrically connected to the pixel electrode 133 and the common electrode 113, and two connection ends of the storage capacitor Cst are electrically connected to the pixel electrode 133 and the array substrate common electrode 137.

In an exemplary embodiment, the liquid crystal capacitor Clc and the storage capacitor Cst may be equivalent capacitors, that is, two plates of the liquid crystal capacitor Clc may be the pixel electrode 133 and the common electrode 113, respectively, and two plates of the storage capacitor Cst may be the pixel electrode 133 and the array substrate common electrode 137, respectively.

It can be understood that the scan signal transmitted on the scan line GL controls the driving transistor 135 to be turned on, and the potential of the data signal transmitted on the data line DL is applied to the liquid crystal capacitor Clc and the storage capacitor Cst, and the liquid crystal capacitor Clc is formed with different preset electric fields for driving the liquid crystal molecules 151 to deflect. When the scan signal is ended, the storage capacitor Cst is used to maintain the voltage of the liquid crystal capacitor Clc to maintain the deflection of the liquid crystal molecules 151.

Referring to fig. 3 together, fig. 3 is a schematic diagram illustrating a first state of the storage capacitor according to an embodiment of the disclosure. In this embodiment, the array substrate 13 further includes an insulating layer 138 and a semiconductor layer 139, where the array substrate common electrode 137 is disposed on a side of the second substrate 131 facing the first substrate 111, and the insulating layer 138 covers the array substrate common electrode 137 on the second substrate 131, that is, the insulating layer 138 is disposed on a surface of the second substrate 131 where the array substrate common electrode 137 is disposed and a surface of the array substrate common electrode 137 facing away from the second substrate 131. The semiconductor layer 139 is disposed on a side of the insulating layer 138 opposite to the common electrode 137 of the array substrate, the pixel electrode 133 is disposed on a side of the semiconductor layer 139 opposite to the insulating layer 138, and opposite sides of the semiconductor layer 139 (i.e., left and right sides of the semiconductor layer 139 shown in fig. 3) extend out of the pixel electrode 133. The pixel electrode 133, the array substrate common electrode 137, the insulating layer 138, and the semiconductor layer 139 form a MIS (Metal Insulator Semiconductor) capacitor structure, i.e., the storage capacitor Cst.

It is understood that the MIS capacitor structure is composed of a metal, an insulating material, and a semiconductor material.

In an exemplary embodiment, the semiconductor layer 139 may be monocrystalline silicon or polycrystalline silicon.

In this embodiment, the display panel 10 is not in the first state of the storage capacitor Cst under the backlight illumination of the backlight module 30, and two plates of the storage capacitor Cst in the first state are the pixel electrode 133 and the array substrate common electrode 137, respectively, and at this time, the capacitance of the storage capacitor Cst is C1.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a second state of the storage capacitor according to the embodiment of the present disclosure. In this embodiment, the display panel 10 is in the second state of the storage capacitor Cst under the backlight illumination of the backlight module 30. Opposite sides of the semiconductor layer 139 become conductors under backlight illumination, so that the MIS capacitance structure changes, i.e., the storage capacitance Cst changes. The two electrode plates of the storage capacitor Cst in the second state are the semiconductor layer 139 and the array substrate common electrode 137, and the capacitance of the storage capacitor Cst is C2, and C2 is greater than C1.

It will be appreciated that under backlight illumination, as the capacitance of the storage capacitor Cst increases, the charge amount Q thereof is unchanged, so that the voltage U between the two plates of the storage capacitor Cst decreases, i.e., c=q/U. When the scan driving signal is finished, the voltage U decreases to decrease the potential on the pixel electrode 133, so that the electric field strength of the preset electric field formed by the pixel electrode 133 and the common electrode 137 decreases, the deflection angle of the liquid crystal molecules 151 decreases, and the light transmitted through the liquid crystal layer 15 decreases, thereby decreasing the brightness of the light emitting side of the display panel 10.

In this embodiment, referring to fig. 5, fig. 5 is a schematic diagram illustrating a principle of occurrence of bright and dark fringes on a display panel according to an embodiment of the present application. Because the backlight module 30 provided in the embodiment of the present application is a Mini LED backlight module, the backlight provided by the Mini LED backlight module has a frequency. Therefore, the brightness of the display panel 10 changes with the backlight frequency of the backlight module 30, and the frequency of the brightness change of the display panel 10 is the same as the backlight frequency of the backlight module 30. When the backlight module 30 provides backlight, the brightness of the display panel 10 decreases, i.e., dark stripes b appear on the display panel 10; when the backlight module 30 does not provide backlight, the brightness of the display panel 10 increases, i.e., bright stripes a appear on the display panel 10.

Referring to fig. 6 and fig. 7, fig. 6 is a schematic diagram illustrating a principle of water ripple on a display panel according to an embodiment of the present application, and fig. 7 is another schematic diagram illustrating a principle of water ripple on a display panel according to an embodiment of the present application. The difference between fig. 6 and fig. 7 is that: the backlight frequencies of the backlight modules 30 are different. In the embodiment of the application, the frame frequency of the display panel 10 in fig. 6 is the same as the backlight frequency of the backlight module 30, for example, the frame frequency of the display panel 10 and the backlight frequency of the backlight module 30 are both 60Hz. In fig. 7, the backlight frequency of the backlight module 30 is twice the frame frequency of the display panel 10, for example, the frame frequency of the display panel 10 is 60Hz, and the backlight frequency of the backlight module 30 is 120Hz. It can be seen that when the backlight frequency of the backlight module 30 is an integer multiple of the frame frequency of the display panel 10, bright and dark alternate stripes appear at the fixed position on the display panel 10, that is, the bright stripes a and the dark stripes b which are sequentially and alternately distributed at the fixed position on the display panel 10 appear, so that the human eyes perceive that water waves appear on the display panel 10. The frame frequency of the display panel 10 is also the frequency of the scanning signal transmitted on the scanning line GL.

In the embodiment, the backlight frequency of the backlight module 30 is set to be a non-integer multiple of the frame frequency of the display panel 10.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating a principle that the display panel disclosed in the embodiment of the present application does not have water ripple. It can be understood that, when the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10, the positions of the bright and dark alternate stripes on the display panel 10 are scrolled, that is, the positions of the bright stripes a and the dark stripes b on the display panel 10, which are sequentially and alternately distributed, are scrolled. The scrolling direction is the arrangement direction of the plurality of scanning lines GL (i.e. the second direction 002), so that the human eye cannot perceive the water ripple on the display panel 10.

In this embodiment, in order to further avoid the occurrence of water ripple on the display panel 10 perceived by human eyes, the backlight frequency of the backlight module 30 is 1.4 to 1.6 times the frame frequency of the display panel 10, for example, 1.4, 1.42, 1.47, 1.5, 1.51, 1.55, 1.58, 1.6, or other values, which are not particularly limited in this application.

It can be appreciated that when the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10, but the multiple of the difference is close to an integer, the occurrence of water ripple on the display panel 10 is also easily perceived by human eyes. Therefore, the backlight frequency of the backlight module 30 is set to be 1.4 to 1.6 times the frame rate of the display panel 10, so that the backlight frequency of the backlight module 30 is a non-integer multiple and much smaller than the integer multiple of the frame rate of the display panel 10. Furthermore, if the backlight frequency of the backlight module 30 is set to be too high, for example, the backlight frequency of the backlight module 30 is 2.4 times the frame frequency of the display panel 10, the power consumption of the backlight module 30 is increased and the temperature of the chip driving the backlight module 30 to emit light is too high.

In summary, the display device 1 provided in the embodiment of the utility model includes the display panel 10 and the backlight module 30, wherein the display panel 10 is disposed on the light emitting side of the backlight module 30, the backlight module 30 has a backlight frequency, and the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10. Therefore, the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10, so that even when the storage capacitor Cst is changed under the backlight illumination of the backlight module 30, the display panel 10 has bright and dark alternate stripes, the human eyes can not sense the water ripple on the display panel 10, and the product taste and the visual experience of the user are improved.

In this embodiment, referring to fig. 4, the orthographic projection of the semiconductor layer 139 on the second substrate 131 is located in the orthographic projection of the array substrate common electrode 137 on the second substrate 131, so that the array substrate common electrode 137 can shield part of backlight, thereby avoiding the semiconductor layer 139 from becoming a conductor under the irradiation of the backlight, and further avoiding the change of the capacitance of the storage capacitor Cst caused by the change of the polar plate of the storage capacitor Cst.

In the embodiment of the present application, the potential of the array substrate common electrode 137 is 8V to 10V, for example, 8V, 8.1V, 8.3V, 8.5V, 8.8V, 9V, 9.2V, 9.5V, 9.8V, 10V, or other values, which are not particularly limited in the present application. It is understood that the potential of the array substrate common electrode 137 is 8V to 10V, which is the maximum value allowed to be reached by the current potential of the array substrate common electrode 137 of the display panel 10, and the potential of the array substrate common electrode 137 is adjusted to the maximum value, which is beneficial to improving the stability of the storage capacitor Cst. Even if the plate of the storage capacitor Cst is changed, the potential of the array substrate common electrode 137 is at a maximum value, and the change in capacitance of the storage capacitor Cst is relatively small, so that the change in the voltage U between the two plates of the storage capacitor Cst is small.

In this embodiment, referring to fig. 1 and 9, fig. 9 is a schematic structural diagram of a sub-pixel of a display panel disclosed in the embodiment of the present application, and the display panel 10 includes a plurality of sub-pixels sp, where the sub-pixels sp are located between two adjacent scanning lines GL and two adjacent data lines DL. Each of the sub-pixels sp includes a display region sp1 and a non-display region sp2 that are adjacently disposed, the array substrate common electrode 137, the semiconductor layer 139, and the driving transistor 135 are located in the non-display region sp2, a portion of the pixel electrode 133 is located in the display region sp1 to form the liquid crystal capacitor Clc with the common electrode 113, and another portion of the pixel electrode 133 is located in the non-display region sp2 to form the storage capacitor Cst with the array substrate common electrode 137, the insulating layer 138, and the semiconductor layer 139.

It is understood that the material of the pixel electrode 133 may be Indium Tin Oxide (ITO) with good transparency, so that the backlight of the backlight module 30 may pass through the display area sp1, and the material of the array substrate common electrode 137 and the driving transistor 135 may include opaque metals, so that the backlight of the backlight module 30 may not pass through the non-display area sp2.

In this embodiment, the backlight module 30 includes a light emitting region 301 and a non-light emitting region 302, where the position of the light emitting region 301 corresponds to the position of the display region sp1, and the position of the non-light emitting region 302 corresponds to the position of the non-display region sp2. That is, the front projection of the light emitting region 301 on the second substrate 131 coincides with the front projection of the display region sp1 on the second substrate 131, and the front projection of the non-light emitting region 302 on the second substrate 131 coincides with the front projection of the non-display region sp2 on the second substrate 131.

It can be understood that the position of the non-display area sp2 corresponds to the position of the non-light emitting area 302, so that the backlight of the backlight module 30 cannot irradiate the area where the common electrode 137 of the array substrate is located, thereby avoiding the change of the capacitance of the storage capacitor Cst.

Further, as shown in fig. 1, the backlight module 30 further includes a plurality of light shielding layers 303, the light shielding layers 303 are disposed on a side of the non-light emitting area 302 facing the non-display area sp2, and the light shielding layers 303 can completely block the backlight of the backlight module 30 from irradiating the area where the common electrode 137 of the array substrate is located, so as to avoid the change of the capacitance of the storage capacitor Cst.

In an exemplary embodiment, the light shielding layer 303 may be a reflective cover or formed through a black coating process.

In the embodiment of the present application, referring to fig. 1 and 2, the backlight module 30 further includes a frame rate detection module 31 and a backlight control module 33. The frame frequency detecting module 31 is electrically connected to the scanning line GL for detecting the frame frequency of the display panel 10 in real time, and the backlight control module 33 is configured to control the backlight frequency of the backlight module 30 according to the frame frequency of the display panel 10.

It is understood that the frame frequency of the display panel 10 is changed during display, and thus, the frame frequency of the display panel 10 is detected in real time by providing the frame frequency detection module 31, and the backlight control module 33 controls the backlight frequency of the backlight module 30 to be a non-integer multiple of the frame frequency of the display panel 10 according to the frame frequency of the display panel 10.

In an exemplary embodiment, the frame rate detection module 31 may be electrically connected to one of the scan lines GL, and calculate the frame rate of the display panel 10 by detecting the interval time of two adjacent scan signals.

In other embodiments of the present application, the display panel 10 further includes a driving module electrically connected to the scan line GL and the data line DL, and the driving module is configured to provide the scan signal to the scan line GL and to provide the data signal to the data line DL. The frame frequency detecting module 31 may be electrically connected to the driving module to detect the frame frequency of the display panel 10.

In an exemplary embodiment, the driving module may be disposed on a circuit board, and the circuit board may be disposed on a side of the backlight module 30 facing away from the display panel 10.

In an exemplary embodiment, the frame rate detection module 31, the backlight control module 33, and the driving module may be integrated circuits (Integrated Circuit, ICs).

In summary, the display device 1 provided in the embodiment of the utility model includes the display panel 10 and the backlight module 30, wherein the display panel 10 is disposed on the light emitting side of the backlight module 30, the backlight module 30 has a backlight frequency, and the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10. Therefore, the backlight frequency of the backlight module 30 is a non-integer multiple of the frame frequency of the display panel 10, so that even when the storage capacitor Cst is changed under the backlight illumination of the backlight module 30, the display panel 10 is provided with bright and dark alternate stripes, the human eyes can not sense the water ripple on the display panel 10, and the product taste and the visual experience of the user are improved.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the application of the present application is not limited to the examples described above, but that modifications and variations can be made by a person skilled in the art from the above description, all of which modifications and variations are intended to fall within the scope of the claims appended hereto. Those skilled in the art will recognize that the methods of accomplishing all or part of the above embodiments and equivalents thereof may be employed and still fall within the scope of the present application.

Claims (10)

1. The display device comprises a display panel and a backlight module, wherein the display panel is arranged on the light emitting side of the backlight module.

2. The display device of claim 1, wherein the display panel comprises a color substrate and an array substrate that are stacked, and a liquid crystal layer disposed between the color substrate and the array substrate, the array substrate is disposed on the backlight module, and the color substrate is disposed on a side of the array substrate opposite to the backlight module.

3. The display device according to claim 2, wherein the color substrate includes a first substrate disposed opposite to the array substrate and a common electrode disposed on a side of the first substrate facing the array substrate;

the array substrate comprises a second substrate, a plurality of pixel electrodes, an array substrate common electrode, an insulating layer and a semiconductor layer, wherein the array substrate common electrode is arranged on one side of the second substrate facing the first substrate, the insulating layer covers the array substrate common electrode on the second substrate, the semiconductor layer is arranged on one side of the insulating layer facing away from the array substrate common electrode, and the pixel electrode is arranged on one side of the semiconductor layer facing away from the insulating layer;

the liquid crystal layer comprises a plurality of liquid crystal molecules, and a preset electric field for driving the liquid crystal molecules to deflect is formed between the common electrode and the pixel electrode.

4. The display device of claim 3, wherein an orthographic projection of the semiconductor layer on the second substrate is located within an orthographic projection of the array substrate common electrode on the second substrate.

5. The display device according to claim 3, wherein the potential of the array substrate common electrode is 8V to 10V.

6. The display device according to claim 3, wherein the display panel further comprises a plurality of sub-pixels including a display region and a non-display region disposed adjacently, the array substrate common electrode and the semiconductor layer being located in the non-display region;

the backlight module comprises a light-emitting area and a non-light-emitting area, wherein the position of the light-emitting area corresponds to the position of the display area, and the position of the non-light-emitting area corresponds to the position of the non-display area.

7. The display device according to claim 6, wherein the backlight module further comprises a plurality of light shielding layers disposed on a side of the non-light emitting region facing the non-display region.

8. The display device according to any one of claims 1 to 7, wherein the backlight module further comprises a frame rate detection module and a backlight control module, the frame rate detection module detects a frame rate of the display panel, and the backlight control module controls a backlight frequency of the backlight module according to the frame rate of the display panel.

9. The display device according to claim 8, wherein the display panel further comprises a plurality of scan lines transmitting scan signals, the frame rate detection module being electrically connected to the scan lines to detect a frame rate of the display panel; or,

the display panel also comprises a driving module for providing scanning signals and data signals, and the frame frequency detection module is electrically connected with the driving module so as to detect the frame frequency of the display panel.

10. The display device according to any one of claims 1-7, wherein a backlight frequency of the backlight module is 1.4 to 1.6 times a frame rate of the display panel.

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