Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a liquid crystal display module and a liquid crystal dimming module. The liquid crystal dimming module is located on the light-emitting side of the liquid crystal display module. The dimming sub-pixels on the liquid crystal dimming module are arranged in one-to-one correspondence with the display sub-pixels on the liquid crystal display module, so that more precise partition dimming is realized, and the contrast of the liquid crystal display panel is improved. Meanwhile, the dimming sub-pixels of the liquid crystal dimming module adopt a passive driving mode, the number of masks and processes can be reduced, and thus the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, and in particular to a display panel and a display device. BACKGROUND

[0002] With the development of display technology, people's dependence on information exchange and transmission is increasing, and the application of low-power-consumption and high-contrast liquid crystal display (LCD) will gradually increase.

[0003] Local dimming technology refers to dividing the backlight into multiple regions and independently controlling the brightness of the backlight in different regions to improve the contrast of the liquid crystal display. However, due to the size of the light emitting diode (LED) in the backlight and the complex design of the driving circuit, the existing local dimming technology has the problems of high cost and difficulty in commercial application. SUMMARY

[0004] The present application provides a display panel and a display device to improve the contrast of the liquid crystal display while reducing the cost.

[0005] To solve the above problems, the technical scheme provided by the present application is as follows:

[0006] The display panel provided by the present application comprises:

[0007] A liquid crystal display module, comprising a plurality of arrayed display sub-pixels, the plurality of display sub-pixels are arranged in a sub-pixel row in a first direction and arranged in a sub-pixel column in a second direction, the second direction being different from the first direction;

[0008] A liquid crystal dimming module arranged on the light entrance side of the liquid crystal display module, the liquid crystal dimming module comprising a plurality of arrayed dimming sub-pixels, the dimming sub-pixels being arranged one-to-one corresponding to the display sub-pixels;

[0009] Wherein, the driving mode of the display sub-pixel is different from the driving mode of the dimming sub-pixel, the driving mode of the display sub-pixel is set to active driving, and the driving mode of the dimming sub-pixel is set to passive driving.

[0010] In the display panel provided by the present application, the dimming sub-pixel comprises a first electrode, and the liquid crystal dimming module comprises:

[0011] A first substrate comprising a first substrate and a plurality of first electrodes arrayed on the first substrate, each first electrode being arranged corresponding to one dimming sub-pixel;

[0012] A second substrate is arranged opposite to the first substrate, and is located on a side of the first electrode away from the first substrate. The second substrate comprises a second substrate and a second electrode arranged on a side of the second substrate facing the first electrode.

[0013] A first liquid crystal layer is arranged between the first electrode and the second electrode, and comprises first liquid crystal molecules.

[0014] The first substrate further comprises a plurality of control signal wires arranged between the first substrate and the first electrode, and each control signal wire is electrically connected to one first electrode.

[0015] In the display panel provided in the embodiments of the present application, each first electrode comprises at least one first sub-electrode and at least one second sub-electrode, and the first sub-electrode and the second sub-electrode are arranged at intervals in a first direction. The control signal wires comprise first sub-signal wires and second sub-signal wires, the first sub-signal wires are electrically connected to the first sub-electrodes, the second sub-signal wires are electrically connected to the second sub-electrodes, and the first sub-signal wires and the second sub-signal wires are arranged in insulation.

[0016] In the display panel provided in the embodiments of the present application, the first sub-electrode comprises a plurality of light modulation domains, the deflection angles of the first liquid crystal molecules corresponding to different light modulation domains are different, and the number of light modulation domains of the first sub-electrode is greater than the number of light modulation domains of the second sub-electrode.

[0017] In the display panel provided in the embodiments of the present application, the number of first sub-electrodes is greater than the number of second sub-electrodes, and the second sub-electrode is located between two adjacent first sub-electrodes. The first sub-signal wires and the second sub-signal wires are arranged at intervals in a second direction, and the second direction is different from the first direction. In the same light modulation sub-pixel, the first sub-electrode and the second sub-electrode are both located between the first sub-signal wires and the second sub-signal wires.

[0018] In the display panel provided in the embodiments of the present application, the number of first sub-electrodes is 2, the number of second sub-electrodes is 1, two first sub-electrodes are symmetrically arranged about the second sub-electrode, the first sub-electrode comprises two light modulation domains, and the second sub-electrode comprises one light modulation domain.

[0019] The liquid crystal light modulation module further comprises a first support column arranged on a side of the second sub-electrode close to the second electrode.

[0020] In the display panel provided in the embodiments of the present application, the first sub-electrode is provided with a plurality of slits in each light-adjusting domain, and the extending directions of the slits in two adjacent light-adjusting domains are different.

[0021] In the display panel provided in the embodiments of the present application, the liquid crystal display module comprises:

[0022] A third substrate is arranged on the side of the second substrate away from the first substrate, and the third substrate comprises a third substrate and a plurality of transistors and third electrodes arranged on the third substrate, each display sub-pixel comprises at least one transistor and one third electrode, and the third electrode is connected with the transistor.

[0023] A fourth substrate is arranged on the side of the third substrate away from the second substrate, and the fourth substrate comprises a fourth substrate and a fourth electrode arranged on the fourth substrate facing the third electrode.

[0024] A second liquid crystal layer is arranged between the third substrate and the fourth substrate.

[0025] A color film layer is arranged on the third substrate or the fourth substrate.

[0026] In the display panel provided in the embodiments of the present application, the third substrate is multiplexed as the second substrate.

[0027] The embodiments of the present application also provide a display device comprising:

[0028] A backlight module;

[0029] The display panel of one of the foregoing embodiments, wherein the display panel is arranged opposite to the backlight module, and the liquid crystal light-adjusting module is located between the liquid crystal display module and the backlight module.

[0030] The display panel and the display device provided in the present application have the following beneficial effects: the display panel comprises a liquid crystal display module and a liquid crystal light-adjusting module, the liquid crystal light-adjusting module is located on the light-incident side of the liquid crystal display module, the light-adjusting sub-pixels on the liquid crystal light-adjusting module are arranged one by one corresponding to the display sub-pixels on the liquid crystal display module, so that more precise partition light adjustment is achieved, and the contrast of the liquid crystal display surface is improved; at the same time, the light-adjusting sub-pixels of the liquid crystal light-adjusting module adopt a passive driving mode, which can reduce the number of masks and processes, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the relative positions of various structures on the display device provided in an embodiment of the present application.

[0033] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the relative display sub-pixels and dimming sub-pixels.

[0034] Figure 3 for Figure 2 A schematic diagram of a planar structure of the first electrode.

[0035] Figure 4 for Figure 2 Detailed structural diagram of the third substrate.

[0036] Figure 5 for Figure 1 Another cross-sectional structural diagram of the relative display sub-pixel and dimming sub-pixel. DETAILED DESCRIPTION

[0037] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in this application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and areas is exaggerated for clarity of understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0038] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the relative positions of various structures on the display device provided in an embodiment of the present application. Figure 2 for Figure 1 A schematic cross-sectional structure diagram of the relative display sub-pixel and dimming sub-pixel, Figure 3 for Figure 2 A schematic diagram of a planar structure of the first electrode, Figure 4 for Figure 2 Detailed structural diagram of the third substrate. Figure 1The display device 100 comprises a backlight module 10 and a display panel 2 arranged opposite to the backlight module 10. Exemplarily, the display device 100 can be a television, a mobile phone, a tablet computer, a computer display, a game device, a digital camera, a vehicle-mounted navigator, an automatic teller machine, a wearable device, or the like device having a display screen.

[0039] The display panel 2 comprises a liquid crystal display module 20 arranged on the light exit side of the backlight module 10 and a liquid crystal dimming module 30. The liquid crystal dimming module 30 is arranged between the liquid crystal display module 20 and the backlight module 10. That is, the liquid crystal dimming module 30 is located on the side of the liquid crystal display module 20 close to the backlight module 10, in other words, the liquid crystal dimming module 30 is located on the light entrance side of the liquid crystal display module 20.

[0040] The liquid crystal display module 20 is used for displaying a picture, and the light exit side of the liquid crystal display module 20 is the side on which the liquid crystal display module 20 displays a picture. The backlight module 10 is used for providing backlight for the liquid crystal display module 20, and the liquid crystal dimming module 30 is used for partitioning the backlight of the backlight module 10 and providing the partitioned backlight to the liquid crystal display module 20 to improve the contrast of the liquid crystal display module 20. The light source of the backlight module 10 can adopt a side-in type or a direct type. Taking the case where the light source of the backlight module 10 adopts a direct type as an example, the backlight module 10 comprises a back plate and a lamp plate, a reflecting sheet, a diffusion plate, a prism sheet and the like optical structures arranged in the accommodating cavity of the back plate.

[0041] The liquid crystal display module 20 comprises a plurality of array-arranged display sub-pixels SP1. The plurality of display sub-pixels SP1 are arranged into sub-pixel rows in a first direction X, and the plurality of display sub-pixels SP1 are arranged into sub-pixel columns in a second direction Y. Every adjacent three display sub-pixels SP1 can constitute a pixel, and the three display sub-pixels SP1 in each pixel can display different colors to realize color display of the pixel, for example, the three display sub-pixels SP1 in each pixel can display red, green and blue respectively. The first direction X and the second direction Y are different, for example, the first direction X and the second direction Y are perpendicular. Of course, the application is not limited thereto, and the first direction X and the second direction Y can also intersect at other angles in the application.

[0042] The liquid crystal dimming module 30 comprises a plurality of arrayed dimming sub-pixels SP2, which are arranged one by one with the display sub-pixels SP1. That is, the plurality of dimming sub-pixels SP2 are arranged into a sub-pixel row in the first direction X, and are arranged into a sub-pixel column in the second direction Y. Each dimming sub-pixel SP2 is arranged one by one with a display sub-pixel SP1. The dimming sub-pixel SP2 controls the passing of the backlight of the backlight module 10 to provide backlight for the corresponding display sub-pixel SP1. For example, when the display sub-pixel SP1 needs to be lighted, the dimming sub-pixel SP2 corresponding to the display sub-pixel SP1 allows the backlight of the backlight module 10 to pass, thereby providing backlight for the display sub-pixel SP1. When the display sub-pixel SP1 does not need to be lighted, the dimming sub-pixel SP2 corresponding to the display sub-pixel SP1 blocks the backlight of the backlight module 10, so that the black picture displayed by the display sub-pixel SP1 is darker. In this way, the backlight can be divided at the pixel level, the division of the backlight is more fine, and the contrast is improved.

[0043] The driving mode of the display sub-pixel SP1 is different from the driving mode of the dimming sub-pixel SP2. The driving mode of the display sub-pixel SP1 is set to active driving, and the driving mode of the dimming sub-pixel SP2 is set to passive driving. It should be noted that active driving refers to active matrix driving. The driving mode controls the display of each sub-pixel point by setting an active element, such as a thin film transistor 212, at each sub-pixel point in the display matrix. Passive driving refers to passive matrix driving. The driving mode directly controls the display of the sub-pixel point by a control signal wire, without the need to set an active element at each sub-pixel point. The structure is relatively simple, thereby reducing the number of masks and processes and reducing the cost.

[0044] In the embodiment, the liquid crystal dimming module 30 is arranged between the liquid crystal display module 20 and the backlight module 10. The dimming sub-pixel SP2 on the liquid crystal dimming module 30 is arranged one by one with the display sub-pixel SP1 on the liquid crystal display module 20. The backlight can be divided at the pixel level, the division of the backlight is more fine, and the contrast is improved. At the same time, the dimming sub-pixel SP2 adopts passive driving mode, which can reduce the number of masks and processes, thereby improving the contrast while reducing the cost.

[0045] The specific structure of the liquid crystal display module 20 and the liquid crystal dimming module 30 will be described in detail below by taking one display sub-pixel SP1 and one dimming sub-pixel SP2 as an example.

[0046] Referring to Figure 2 , Figure 2The following schematic diagram shows the film structure of a display sub-pixel SP1 and a dimming sub-pixel SP2, respectively, on the liquid crystal display module 20 and the liquid crystal dimming module 30. However, the structures of the display sub-pixel SP1 and the dimming sub-pixel SP2 described in this application are not limited thereto. The dimming sub-pixel SP2 includes a first electrode 312. The liquid crystal dimming module 30 includes a first substrate 31 and a second substrate 32 disposed opposite each other, and a first liquid crystal layer 33 disposed between the first and second substrates 31 and 32. The second substrate 32 is located on the side of the first substrate 31 away from the backlight module 10.

[0047] The first substrate 31 includes a first substrate 311 and a plurality of first electrodes 312 arranged in an array on the first substrate 311. Each first electrode 312 is provided corresponding to one of the dimming sub-pixels SP2. The first substrate 31 also includes a plurality of control signal traces 313 provided between the first substrate 311 and the first electrodes 312. Each control signal trace 313 is electrically connected to one of the first electrodes 312 and is configured to provide an electrical signal to the first electrode 312 to achieve passive driving of the dimming sub-pixel SP2.

[0048] The second substrate 32 is disposed opposite the first substrate 31 and is located on the side of the first electrode 312 away from the first substrate 311. The second substrate 32 includes a second substrate 321 and a second electrode 322 disposed on the side of the second substrate 321 facing the first electrode 312. When an electrical signal is applied to the second electrode 322 and the first electrode 312, an electric field is formed between the second electrode 322 and the first electrode 312. The second electrode 322 and the first electrode 312 can be made of the same material, for example, a transparent conductive material such as indium tin oxide (ITO).

[0049] Optionally, the second substrate 321 and the first substrate 311 are made of the same material. For example, the second substrate 321 and the first substrate 311 may be rigid substrates or flexible substrates. When the second substrate 321 and the first substrate 311 are rigid substrates, they may include rigid transparent substrates such as glass substrates, quartz substrates, or silicon wafers. When the second substrate 321 and the first substrate 311 are flexible substrates, they may include flexible transparent substrates such as polyimide (PI) film, ultra-thin glass film, polyethylene terephthalate (PET), and triacetyl cellulose (TAC).

[0050] The first liquid crystal layer 33 is disposed between the first electrode 312 and the second electrode 322, and includes first liquid crystal molecules 331. The first liquid crystal molecules 331 are deflected by an electric field between the first electrode 312 and the second electrode 322, and change their arrangement state to control the backlight transmittance of the backlight module 10.

[0051] The liquid crystal dimming module 30 further includes a first sealant 34 and a first support column 35 disposed between the first substrate 31 and the second substrate 32. The first sealant 34 surrounds the first liquid crystal layer 33. The first support column 35 is connected between the first electrode 312 and the second electrode 322 to control the cell gap of the liquid crystal dimming module 30.

[0052] With reference to Figure 2 and Figure 3 The first substrate 31 further includes a first insulating layer 314 between the control signal trace 313 and the first electrode 312. The first insulating layer 314 has a via hole, and the first electrode 312 in the via hole of the first insulating layer 314 is in contact with and electrically connected to the control signal trace 313. Optionally, the first insulating layer 314 can be silicon nitride (SiNx), silicon oxide (SiOx), or a stack of silicon nitride and silicon oxide.

[0053] In an embodiment, each of the first electrodes 312 includes at least one first sub-electrode 3121 and at least one second sub-electrode 3122, and the first sub-electrodes 3121 and the second sub-electrodes 3122 are disposed at intervals in the first direction X. The control signal trace 313 includes a first sub-signal trace 3131 and a second sub-signal trace 3132, the first sub-signal trace 3131 is electrically connected to the first sub-electrode 3121, and the second sub-signal trace 3132 is electrically connected to the second sub-electrode 3122. The first insulating layer 314 has a first via hole 3141 at a position corresponding to the first sub-signal trace 3131, and a second via hole 3142 at a position corresponding to the second sub-signal trace 3132. Part of the first sub-electrode 3121 is in contact with and electrically connected to the first sub-signal trace 3131 in the first via hole 3141, and part of the second sub-electrode 3122 is in contact with and electrically connected to the second sub-signal trace 3132 in the second via hole 3142.

[0054] The first sub-signal wire 3131 and the second sub-signal wire 3132 are insulated, that is, the electrical signals on the first sub-signal wire 3131 and the second sub-signal wire 3132 are different, so that the first sub-electrode 3121 and the second sub-electrode 3122 can be independently controlled, and the deflection angle of the first liquid crystal molecules 331 in the corresponding area of the first sub-electrode 3121 and the second sub-electrode 3122 can be adjusted, and the light transmittance is controlled.

[0055] Therefore, when the liquid crystal display module 20 needs to display a large viewing angle, electrical signals are applied to the first sub-electrode 3121 and the second sub-electrode 3122, so that light is transmitted in the corresponding area of the first sub-electrode 3121 and the second sub-electrode 3122; when the liquid crystal display module 20 needs to display a narrow viewing angle to achieve the privacy function, an electrical signal is applied to the second sub-electrode 3122, and no electrical signal is applied to the first sub-electrode 3121, so that light is transmitted in the corresponding area of the second sub-electrode 3122, and no light is transmitted in the corresponding area of the first sub-electrode 3121.

[0056] Optionally, the first sub-electrode 3121 includes a plurality of light-adjusting domains, and the deflection angles of the first liquid crystal molecules 331 corresponding to different light-adjusting domains are different, so as to increase the light-emitting angle of the light-adjusting sub-pixel SP2. The number of light-adjusting domains of the first sub-electrode 3121 is greater than that of the second sub-electrode 3122, so that the light-emitting angle of the corresponding area of the first sub-electrode 3121 is greater than that of the corresponding area of the second sub-electrode 3122. Therefore, when a large viewing angle is needed, the light-emitting angle can be further increased to increase the viewing angle because the first sub-electrode 3121 includes a plurality of light-adjusting domains; and when the privacy function is needed to be achieved, the light-emitting angle is small because the number of light-adjusting domains of the second sub-electrode 3122 is small, so that the light-emitting angle can be converged and the viewing angle can be reduced.

[0057] The first sub-electrode 3121 is provided with a plurality of slits 3120 in each light-adjusting domain, the extension directions of the slits 3120 in adjacent two light-adjusting domains are different, for example, the slits 3120 in adjacent two light-adjusting domains are symmetrically arranged. The slit 3120 is a hollow structure on the first sub-electrode 3121. Specifically, the first sub-electrode 3121 can include a trunk electrode, a frame electrode and a branch electrode. The trunk electrode extends along the first direction X. The frame electrode surrounds the trunk electrode. The trunk electrode divides the first sub-electrode 3121 into a plurality of light-adjusting domains. The branch electrode is located in the light-adjusting domain and is connected with the trunk electrode and the frame electrode. The gap between adjacent branch electrodes is the slit 3120. The angle between the slit 3120 and the first direction X ranges from 0° to 45°, for example, it can be 7°, etc., so as to better increase the light-emitting angle of the corresponding area of the first sub-electrode 3121.

[0058] The number of the first sub-electrodes 3121 is greater than the number of the second sub-electrodes 3122, and the second sub-electrodes 3122 are located between adjacent two first sub-electrodes 3121. The first sub-signal wires 3131 and the second sub-signal wires 3132 are arranged at intervals in the second direction Y, and the first sub-electrodes 3121 and the second sub-electrodes 3122 are located between the first sub-signal wires 3131 and the second sub-signal wires 3132. The first sub-electrode 3121 exceeds the end of the second sub-electrode 3122 at one end close to the first sub-signal wire 3131 to be electrically connected with the first sub-signal wire. Correspondingly, the second sub-electrode 3122 exceeds the end of the first sub-electrode 3121 at one end close to the second sub-signal wire 3132 to be electrically connected with the second sub-signal wire.

[0059] In an embodiment, with reference to Figure 3The number of the first sub-electrodes 3121 is 2, the number of the second sub-electrodes 3122 is 1, two first sub-electrodes 3121 are symmetrically arranged about the second sub-electrode 3122, the first sub-electrode 3121 includes two dimming domains, such as a first dimming domain DM1 and a second dimming domain DM2, the first dimming domain DM1 and the second dimming domain DM2 are symmetrically arranged about the middle line P-P' of the first sub-electrode 3121. The second sub-electrode 3122 includes one dimming domain. By setting the second sub-electrode 3122 as a single domain, the light-emitting angle of the corresponding area of the second sub-electrode 3122 can be further reduced, and better privacy protection effect can be achieved. In addition, since the second sub-electrode 3122 adopts a single-domain design, the first support column 35 can be arranged on the side of the second sub-electrode 3122 close to the second electrode 322, so as to improve the stability of the first support column 35.

[0060] With reference back to Figure 2 The liquid crystal display module 20 includes a third substrate 21 and a fourth substrate 22 arranged opposite to each other, and a second liquid crystal layer 23 arranged between the third substrate 21 and the fourth substrate 22. The fourth substrate 22 is located on the side of the third substrate 21 away from the backlight module 10.

[0061] The third substrate 21 is arranged on the side of the second substrate 32 away from the first substrate 31, and includes a third substrate 211 and a plurality of transistors 212 and a third electrode 213 arranged on the third substrate 211. Each display sub-pixel SP1 includes at least one transistor 212 and one third electrode 213, and the third electrode 213 is connected with the transistor 212. The transistor 212 is used to provide a driving signal for the third electrode 213, so as to realize active driving of the display sub-pixel SP1.

[0062] The fourth substrate 22 is arranged on the side of the third substrate 21 away from the second substrate 32, and includes a fourth substrate 221 and a fourth electrode 222 arranged on the fourth substrate 221 facing the third electrode 213. After the fourth electrode 222 and the third electrode 213 are connected to the electrical signal, an electric field is formed between the fourth electrode 222 and the third electrode 213. The fourth electrode 222 and the third electrode 213 can be made of the same material, such as transparent conductive material, e.g. Indium Tin Oxide (ITO). Optionally, the fourth substrate 221 and the third substrate 211 are made of the same material, such as rigid substrate or flexible substrate. When the fourth substrate 221 and the third substrate 211 are rigid substrates, they can be hard transparent substrates such as glass substrates, quartz substrates or silicon wafers. When the fourth substrate 221 and the third substrate 211 are flexible substrates, they can be flexible transparent substrates such as Polyimide (PI) film, ultra-thin glass film, Poly ethyleneterephthalate (PET), Triacetyl Cellulose (TAC), etc.

[0063] The second liquid crystal layer 23 is arranged between the third electrode 213 and the fourth electrode 222, and includes second liquid crystal molecules 231. The second liquid crystal molecules 231 are deflected under the action of the electric field between the third electrode 213 and the fourth electrode 222, and change their arrangement state to control the transmittance of the backlight after passing through the liquid crystal light modulation module 30, so as to realize the display function.

[0064] Correspondingly, the liquid crystal display module 20 further includes a second sealant 24 and a second support column 25 arranged between the third substrate 21 and the fourth substrate 22. The second sealant 24 surrounds the second liquid crystal layer 23. The second support column 25 is connected between the third electrode 213 and the fourth electrode 222 to control the cell gap of the liquid crystal display module 20.

[0065] Of course, in order to realize color display of the liquid crystal display module 20, the liquid crystal display module 20 further comprises a color filter layer, which is arranged on the third substrate 21 or the fourth substrate 22, for example, when the color filter layer is arranged on the third substrate 21, the color filter layer can be located between the transistor 212 and the third electrode 213; when the color filter layer is arranged on the fourth substrate 22, the color filter layer can be located between the fourth electrode 222 and the fourth substrate 221. Wherein, the color filter layer comprises a plurality of color filter blocks, each color filter block corresponds to one display sub-pixel SP1. The plurality of color filter blocks can comprise red color filter blocks, green color filter blocks and blue color filter blocks, the display sub-pixel SP1 corresponding to the red color filter block can display red, the display sub-pixel SP1 corresponding to the green color filter block can display green, and the display sub-pixel SP1 corresponding to the blue color filter block can display blue, thereby realizing color display.

[0066] Optionally, referring to Figure 2 and Figure 4 , the third substrate 21 further comprises a fifth electrode 214 located between the transistor 212 and the third electrode 213, the fifth electrode 214 can provide an electrical signal for the liquid crystal display module 20, or form a horizontal electric field with the third electrode 213 to control the deflection of the second liquid crystal molecules 231, at this time, the fourth electrode 222 can not be arranged. The material of the fifth electrode 214 can be the same as that of the third electrode 213.

[0067] Referring to Figure 4 , the third substrate 21 further comprises a light shielding electrode 215 arranged corresponding to the transistor 212, the transistor 212 can be a thin film transistor 212, the transistor 212 comprises an active layer 2121, a gate 2122, a gate insulating layer 2123, a source 2124 and a drain 2125, and the light shielding electrode 215 is arranged corresponding to at least the active layer 2121. The material of the light shielding electrode 215 comprises molybdenum, titanium and other metals with light shielding properties.

[0068] Of course, the third substrate 21 further comprises a plurality of insulating layers arranged between the light shielding electrode 215, the transistor 212, the fifth electrode 214 and the third electrode 213 and other structures. For example, the plurality of insulating layers comprise a buffer layer 216, a first interlayer insulating layer 217, a passivation layer 218, a planarization layer 219 and a second interlayer insulating layer 220.

[0069] The buffer layer 216 covers the light-shielding electrode 215 and the third substrate 211. The active layer 2121 is disposed on the side of the buffer layer 216 away from the third substrate 211, and includes a channel portion and source and drain contact portions on opposite sides of the channel portion. The gate insulating layer 2123 and the gate electrode 2122 are disposed on the side of the active layer 2121 away from the third substrate 211, and correspond to the channel portion.

[0070] The first interlayer insulating layer 217 covers the gate electrode 2122, part of the active layer 2121, and the buffer layer 216. The source electrode 2124 and the drain electrode 2125 are disposed on the side of the first interlayer insulating layer 217 away from the third substrate 211. The source electrode 2124 and the drain electrode 2125 are electrically connected to the source and drain contact portions, respectively, through vias in the first interlayer insulating layer 217. Optionally, the transistor 212 further includes an auxiliary electrode 2126 connected to the light-shielding electrode 215, which can be electrically connected to the drain electrode 2125 of the transistor 212.

[0071] The passivation layer 218 covers the source electrode 2124, the drain electrode 2125, and the first interlayer insulating layer 217. The planarization layer 219 covers the passivation layer 218. The fifth electrode 214 is disposed on the side of the passivation layer 218 away from the third substrate 211. The second interlayer insulating layer 220 covers the fifth electrode 214 and the planarization layer 219. The third electrode 213 is disposed on the side of the second interlayer insulating layer 220 away from the third substrate 211, and is electrically connected to the drain electrode 2125 through a via in the second interlayer insulating layer 220.

[0072] In an embodiment, referring to Figures 1 to 5 , Figure 5 for Figure 1 opposite display sub-pixels SP1 and dimming sub-pixels SP2. Referring to Figure 5 , and Figure 2 The difference between the example embodiment and the above-described embodiments is that the third substrate 211 on the liquid crystal display module 20 is multiplexed as the second substrate 321 on the liquid crystal dimming module 30, i.e., the liquid crystal display module 20 and the liquid crystal dimming module share one substrate, so as to reduce the number of substrates and further reduce the cost. For other descriptions, please refer to the above-described embodiments, which will not be described here again.

[0073] According to the above-described embodiments, it can be known that:

[0074] The display panel and the display device provided by the application comprise a liquid crystal display module and a liquid crystal dimming module, the liquid crystal dimming module is located on the light entering side of the liquid crystal display module, the dimming sub-pixels on the liquid crystal dimming module are arranged in one-to-one correspondence with the display sub-pixels on the liquid crystal display module, so that more fine partition dimming is realized, and the contrast of the liquid crystal display panel is improved; meanwhile, the dimming sub-pixels of the liquid crystal dimming module adopt a passive driving mode, the number of masks and processes can be reduced, and thus the cost can be reduced.

[0075] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0076] The above has introduced the embodiments of the application in detail, and the principle and implementation mode of the application have been described by applying specific examples; the above embodiment description is only used for helping to understand the technical scheme and core idea of the application; the person skilled in the art should understand that the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.

Claims

1. A display panel, characterized by, The application relates to a liquid crystal display module and a liquid crystal light-adjusting module. The liquid crystal display module comprises a plurality of array-arranged display sub-pixels, the display sub-pixels are arranged in sub-pixel rows in a first direction and are arranged in sub-pixel columns in a second direction, and the second direction is different from the first direction. The liquid crystal light-adjusting module is arranged on the light-entering side of the liquid crystal display module, the liquid crystal light-adjusting module comprises a plurality of array-arranged light-adjusting sub-pixels, the light-adjusting sub-pixels are arranged one by one with the display sub-pixels, the liquid crystal light-adjusting module comprises a first substrate, a second substrate and a first liquid crystal layer arranged between the first substrate and the second substrate, the first substrate comprises a plurality of first electrodes, the second substrate comprises a second electrode, each first electrode is arranged in correspondence with a light-adjusting sub-pixel, and the first liquid crystal layer comprises first liquid crystal molecules. The driving mode of the display sub-pixel is different from the driving mode of the light-adjusting sub-pixel, the driving mode of the display sub-pixel is set as active driving, and the driving mode of the light-adjusting sub-pixel is set as passive driving. The light-adjusting sub-pixel comprises a first electrode, each first electrode comprises at least one first sub-electrode and at least one second sub-electrode, the first sub-electrode and the second sub-electrode are arranged at intervals in the first direction, the first sub-electrode and the second sub-electrode each comprise a plurality of light-adjusting domains, the number of light-adjusting domains of the first sub-electrode is greater than that of the second sub-electrode, and the deflection angles of the first liquid crystal molecules corresponding to different light-adjusting domains are different.

2. The display panel of claim 1, wherein, The first substrate comprises a first substrate and a plurality of first electrodes arranged on the first substrate. The second substrate is arranged opposite to the first substrate, the second substrate comprises a second substrate and a second electrode arranged on the side of the second substrate facing the first electrode. The first substrate further comprises a plurality of control signal wires arranged between the first substrate and the first electrode, and each control signal wire is electrically connected with a first electrode.

3. The display panel of claim 2, wherein, The control signal wire comprises a first sub-signal wire and a second sub-signal wire, the first sub-signal wire is electrically connected with the first sub-electrode, the second sub-signal wire is electrically connected with the second sub-electrode, and the first sub-signal wire and the second sub-signal wire are insulatively arranged.

4. The display panel of claim 3, wherein, The first sub-electrode is provided with a plurality of slits in each light-adjusting domain, and the extension directions of the slits in adjacent two light-adjusting domains are different.

5. The display panel of claim 3, wherein, The number of the first sub-electrodes is greater than that of the second sub-electrodes, the second sub-electrode is located between adjacent two first sub-electrodes, and the first sub-signal wire and the second sub-signal wire are arranged at intervals in the second direction, and in the same light-adjusting sub-pixel, the first sub-electrode and the second sub-electrode are located between the first sub-signal wire and the second sub-signal wire.

6. The display panel of claim 5, wherein, The number of the first sub-electrodes is 2, the number of the second sub-electrode is 1, two first sub-electrodes are symmetrically arranged about the second sub-electrode, the first sub-electrode comprises two light-adjusting domains, and the second sub-electrode comprises one light-adjusting domain. The liquid crystal light-adjusting module further comprises a first supporting column, and the first supporting column is arranged on the side of the second sub-electrode close to the second electrode.

7. The display panel of any of claims 2-6, wherein, The liquid crystal display module comprises: a third substrate arranged on the side of the second substrate away from the first substrate, the third substrate comprising a third substrate and a plurality of transistors and third electrodes arranged on the third substrate, each display sub-pixel comprising at least one transistor and one third electrode, and the third electrode being connected with the transistor; a fourth substrate arranged on the side of the third substrate away from the second substrate, the fourth substrate comprising a fourth substrate and a fourth electrode arranged on the fourth substrate facing the third electrode; a second liquid crystal layer arranged between the third substrate and the fourth substrate; a color filter layer arranged on the third substrate or the fourth substrate.

8. The display panel of claim 7, wherein, The third substrate is multiplexed as the second substrate.

9. A display device, characterized by comprising: comprises: a backlight module; The display panel according to any one of claims 1 to 8 is arranged opposite to the backlight module, and the liquid crystal light-adjusting module is located between the liquid crystal display module and the backlight module.

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