Display module and display device

Abstract

The embodiment of the utility model provides a display module and a display device, relates to the technical field of display, and is used for enabling the display module to be flexibly switched between a peep-proof state and a shared state. The display module comprises a light-emitting substrate, a peep-proof film and a dimming panel. The peep-proof film is arranged on one side of the light-emitting substrate. The dimming panel is arranged on the side, away from the light-emitting substrate, of the peep-proof film. The dimming panel comprises a first substrate, a second substrate, a first liquid crystal layer, a first electrode and a second electrode, wherein the first substrate and the second substrate are oppositely arranged; the first substrate is closer to the peep-proof film than the second substrate; the first liquid crystal layer is filled between the first substrate and the second substrate; the first electrode and the second electrode are arranged between the first liquid crystal layer and the first substrate, the first electrode and the second electrode are used for receiving different voltages so as to control the light transmitting state of the first liquid crystal layer, and a plurality of openings are formed in the second electrode. The display module is used for displaying images.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a display module and a display device. BACKGROUND

[0002] With the continuous development of science and technology, various display devices such as mobile phones, tablets, and displays are emerging in an endless stream, bringing convenience to people's work and life. Users can use display devices to access various information including private information. For example, users can use display devices to access bank accounts, pay bills, make online purchases, and access various password-protected websites. When users access private information in public places, users may be subject to identity theft and privacy invasion. Therefore, in recent years, privacy protection has become the focus of research and development of display technology. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present disclosure aim to provide a display module and a display device, which can realize flexible switching between a privacy state and a sharing state.

[0004] To achieve the above-mentioned purpose, embodiments of the present disclosure provide the following technical solutions:

[0005] In one aspect, a display module is provided. The display module includes a light-emitting substrate, a privacy film, and a light-adjusting panel. The privacy film is disposed on one side of the light-emitting substrate. The light-adjusting panel is disposed on the side of the privacy film away from the light-emitting substrate; the light-adjusting panel includes a first substrate and a second substrate disposed opposite to each other, a first liquid crystal layer, a first electrode, and a second electrode, the first substrate is closer to the privacy film than the second substrate; the first liquid crystal layer is filled between the first substrate and the second substrate; the first electrode and the second electrode are disposed between the first liquid crystal layer and the first substrate, the first electrode and the second electrode are used to receive different voltages to control the light transmission state of the first liquid crystal layer, and a plurality of openings are formed in the second electrode.

[0006] In the display module, the first liquid crystal layer is filled between the first substrate and the second substrate, and the first electrode and the second electrode are arranged between the first liquid crystal layer and the first substrate. Thus, when the first electrode and the second electrode receive different voltages, an electric field for controlling the deflection of the first liquid crystal molecules in the first liquid crystal layer can be formed. Since the second electrode is provided with a plurality of openings, the first liquid crystal molecules in the first liquid crystal layer are inclined to the periphery of the openings under the action of the electric field, and the light from the light-emitting substrate passing through the privacy film is dispersed to the periphery. The display module realizes the sharing state. In the absence of voltage received by the first electrode and the second electrode, no electric field acts on the first liquid crystal layer, and the first liquid crystal molecules in the first liquid crystal layer are arranged in the initial state. The first liquid crystal molecules do not play a role in dispersing the light from the light-emitting substrate passing through the privacy film. Thus, the light passing through the light modulation panel is the light from the light-emitting substrate passing through the privacy film. Since the privacy film blocks part of the light at the side view angle, the display screen content of the display module becomes blurred or invisible at the side view angle, and the display screen content of the display module is clearly visible at the front view angle. In this case, the display module realizes the privacy function. Furthermore, the display module can realize flexible switching between the privacy state and the sharing state.

[0007] In some embodiments, the first electrode is located between the first substrate and the second electrode; the second electrode includes a plurality of first sub-electrodes and a plurality of second sub-electrodes, the plurality of first sub-electrodes extend along a first direction and are arranged in sequence along a second direction, the plurality of second sub-electrodes extend along the second direction and are arranged in sequence along the first direction; the first direction and the second direction intersect; the plurality of first sub-electrodes and the plurality of second sub-electrodes are cross-connected to enclose the plurality of openings.

[0008] In some embodiments, the first electrode includes a planar electrode; or, the first electrode includes a plurality of first electrode blocks, and at least two first electrode blocks are arranged in sequence along the first direction.

[0009] In some embodiments, the first electrode includes a plurality of first electrode blocks, and the plurality of first electrode blocks are arranged as a plurality of rows along the first direction and a plurality of columns along the second direction; the light modulation panel further includes a plurality of first signal lines extending along the first direction, a plurality of second signal lines extending along the second direction, and a plurality of transistors; the plurality of first electrode blocks are electrically connected to the second electrodes of the plurality of transistors, respectively; a plurality of first electrode blocks located in the same row are electrically connected to a first signal line through the control electrodes of the corresponding transistors, respectively; and a plurality of first electrode blocks located in the same column are electrically connected to a second signal line through the first electrodes of the corresponding transistors, respectively.

[0010] In some embodiments, the first electrode comprises a plurality of third sub-electrodes and a plurality of fourth sub-electrodes, the plurality of third sub-electrodes extend along a first direction and are arranged in sequence with intervals along a second direction, the plurality of fourth sub-electrodes extend along the second direction and are arranged in sequence with intervals along the first direction; the plurality of third sub-electrodes and the plurality of fourth sub-electrodes are cross-connected; wherein the third sub-electrodes are arranged between two adjacent first sub-electrodes, and the fourth sub-electrodes are arranged between two adjacent second sub-electrodes.

[0011] In some embodiments, the first electrode is located between the first substrate and the second electrode; the second electrode comprises a plurality of second electrode blocks arranged in an array, and at least one opening is formed in each of the second electrode blocks.

[0012] In some embodiments, the light control panel further comprises a plurality of first connection lines, each of the plurality of first connection lines is electrically connected with the plurality of second electrode blocks; the display module further comprises a driving chip; the driving chip is electrically connected with the plurality of first connection lines; and the driving chip is configured to provide a driving signal to the plurality of first connection lines.

[0013] In some embodiments, the driving chip is further configured to provide a touch signal, and to transmit the touch signal and the driving signal to the plurality of first connection lines in time division.

[0014] In some embodiments, the shape of the first connection line comprises a straight line, a broken line or a curve.

[0015] In some embodiments, the shape of the opening comprises a circle, an ellipse or a polygon.

[0016] In some embodiments, the first electrode comprises a plurality of fifth sub-electrodes extending along a second direction and arranged in sequence with intervals along a first direction, and the second electrode comprises a plurality of sixth sub-electrodes extending along the second direction and arranged in sequence with intervals along the first direction, and the gap between two adjacent sixth sub-electrodes constitutes the opening; the first direction and the second direction intersect; wherein along the first direction, the plurality of fifth sub-electrodes and the plurality of sixth sub-electrodes are arranged alternately.

[0017] In some embodiments, the shape of any one of the fifth sub-electrode and the sixth sub-electrode comprises a broken line or a curve.

[0018] In some embodiments, along the first direction, the distance between adjacent fifth sub-electrodes and sixth sub-electrodes is uniform.

[0019] In some embodiments, the plurality of fifth sub-electrodes and the plurality of sixth sub-electrodes are of the same material and are arranged in the same layer.

[0020] In some embodiments, the privacy film comprises light-shielding portions and light-transmitting portions; the light-shielding portions and the light-transmitting portions extend along a second direction and are arranged alternately along a first direction; the first direction and the second direction intersect; or, the light-shielding portions are provided with a plurality of light-transmitting openings, and the light-transmitting portions are located in the light-transmitting openings.

[0021] In some embodiments, the display module further comprises a display panel, which is arranged on a side of the light modulation panel away from the light-emitting substrate, or between the light modulation panel and the light-emitting substrate; the display panel comprises a color filter substrate, which comprises a black matrix layer provided with a plurality of black matrix openings; the included angle between the extension direction of the sidewall of the black matrix opening and the extension direction of the sidewall of the light-transmitting portion is an acute angle.

[0022] In some embodiments, the display module has a display area and a device arrangement area, the device arrangement area is located beside the display area; the light-emitting substrate and the privacy film are located outside the device arrangement area; the first electrode is located in the display area, the second electrode and a part of the first liquid crystal layer are both located in the display area, and the second electrode and another part of the first liquid crystal layer are both located in the device arrangement area; the display module further comprises a camera, which is located in the device arrangement area and on a side of the light modulation panel close to the light-emitting substrate; the light modulation panel further comprises a third electrode located in the device arrangement area and on a side of the first liquid crystal layer close to the first substrate; the second electrode, the third electrode and the first liquid crystal layer all cover the camera.

[0023] In some embodiments, the third electrode and the first electrode are made of the same material and arranged in the same layer.

[0024] In another aspect, a display device is provided. The display device comprises the display module according to any one of the above embodiments and a circuit board connected with the display module.

[0025] The display device has the same structure and beneficial technical effects as the display module provided in some of the above embodiments, and will not be described here again. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only some of the drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, etc. of the product involved in the embodiments of the present disclosure.

[0027] Figure 1 A use scenario diagram of a display device according to some embodiments;

[0028] Figure 2 A structure diagram of a display module in a privacy state according to some embodiments;

[0029] Figure 3 A structure diagram of a display module in a sharing state according to some embodiments;

[0030] Figure 4 A structure diagram of a first electrode and a second electrode in a display module according to some embodiments;

[0031] Figure 5 A structure diagram of a display module in a privacy state according to some other embodiments;

[0032] Figure 6 A structure diagram of a display module in a sharing state according to some other embodiments;

[0033] Figure 7 An arrangement diagram of first liquid crystal molecules in a display module according to some embodiments;

[0034] Figure 8 A structure diagram of a first electrode and a second electrode in a display module according to some other embodiments;

[0035] Figure 9 An arrangement diagram of first liquid crystal molecules in a display module according to some other embodiments;

[0036] Figure 10 A structure diagram of a first electrode and a second electrode in a display module according to some other embodiments;

[0037] Figure 11 A structure diagram of a first electrode and a second electrode in a display module according to some other embodiments;

[0038] Figure 12 A structure diagram of a first electrode and a second electrode in a display module according to some other embodiments;

[0039] Figure 13Structure diagram of a first electrode and a second electrode in a display module according to some embodiments;

[0040] Figure 14 Structure diagram of a first electrode and a second electrode in a display module according to some embodiments;

[0041] Figure 15 Structure diagram of a first electrode and a second electrode in a display module according to some embodiments;

[0042] Figure 16 Structure diagram of a privacy film in a display module according to some embodiments;

[0043] Figure 17 Structure diagram of a privacy film in a display module according to some embodiments;

[0044] Figure 18 Structure diagram of a display module according to some embodiments;

[0045] Figure 19 Structure diagram of a display module according to some embodiments;

[0046] Figure 20 Structure diagram of a display module according to some embodiments;

[0047] Figure 21 Structure diagram of a display module according to some embodiments;

[0048] Figure 22 Structure diagram of a display module according to some embodiments;

[0049] Figure 23 Structure diagram of a display module according to some embodiments;

[0050] Figure 24 Structure diagram of a display module according to some embodiments;

[0051] Figure 25 Structure diagram of a display module according to some embodiments;

[0052] Figure 26 Structure diagram of a display module according to some embodiments;

[0053] Figure 27 Structure diagram of a display module according to some embodiments;

[0054] Figure 28 Structure diagram of a display module according to some embodiments;

[0055] Figure 29 Structure diagram of a display device according to some embodiments. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of embodiments of the present disclosure, but not all embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0057] Unless otherwise required by context, the term "comprises" or "comprising" in the specification and claims is to be construed as open language, i.e., "including but not limited to". In describing the embodiments of the specification, the terms "one embodiment", "some embodiments", "an exemplary embodiment", "an example", or "some examples" are intended to mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative representations of the above terms do not necessarily indicate a reference to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics described can be included in any suitable way in any one or more embodiments or examples.

[0058] Hereinafter, the terms "first" and "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0059] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", and includes the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0060] The use of "adapted for" or "configured for" herein means open and inclusive language that does not exclude devices adapted for or configured for performing additional tasks or steps.

[0061] As used herein, "about", "approximately", or "around" includes the stated value and the average value within an acceptable range of deviation from the specific value, where the acceptable range of deviation is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the specific quantity (i.e., the limitations of the measurement system).

[0062] As used herein, "parallel," "perpendicular," "equal" include the recited condition and conditions approximating the recited condition within an acceptable deviation range, where the acceptable deviation range is as determined by one of ordinary skill in the art taking into account the measurement at issue and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can have an acceptable deviation range of, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also have an acceptable deviation range of, for example, within 5°. "Equal" includes absolute equality and near equality, where near equality can have an acceptable deviation range of, for example, a difference between the two that is less than or equal to 5% of either.

[0063] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers can also be present.

[0064] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples. In the interest of clarity, not all of the circular features can be shown in the drawings. It will be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions can be made. These implementation-specific decisions can include, for example, manufacturing or tolerancing considerations, which can vary from one implementation to another. Thus, the exemplary embodiments are not to be construed as limited to the specific shapes of regions illustrated herein but are to include any shapes that might be predicted to result from the processes described herein. For example, etched regions will typically have curved features rather than the square or rectangular features shown in the drawings. Thus, the shapes shown in the drawings are exemplary and are not intended to limit the scope of the exemplary embodiments.

[0065] Reference Figure 1 As display devices 1000 become indispensable in people's daily life, users Q are increasingly concerned that their information will be seen by other users Q when working or using in public places, resulting in information leakage. As shown in the scenario Figure 1 , there is a risk of information leakage in scenarios such as business office, bank money withdrawal, or mobile phone password input, so users have higher demand for display devices.

[0066] To this end, an embodiment of the present disclosure provides a display module 100, referring to Figure 2 The display module 100 includes a light-emitting substrate 10, a privacy film 20, and a light-adjustable panel 30. The privacy film 20 is arranged on one side of the light-emitting substrate 10; and the light-adjustable panel 30 is arranged on the side of the privacy film 20 away from the light-emitting substrate 10.

[0067] With reference to Figure 2The light-adjusting panel 30 comprises a first substrate 31 and a second substrate 32 arranged oppositely, a first liquid crystal layer 33, a first electrode 34 and a second electrode 35. The first substrate 31 is closer to the privacy film 20 than the second substrate 32; the first liquid crystal layer 33 is filled between the first substrate 31 and the second substrate 32; the first electrode 34 and the second electrode 35 are arranged between the first liquid crystal layer 33 and the first substrate 31, and refer to Figure 2 、 Figure 3 and Figure 4 The first electrode 34 and the second electrode 35 are used to receive different voltages to control the light transmission state of the first liquid crystal layer 33; a plurality of openings K are arranged in the second electrode 35.

[0068] In some embodiments, the material of the first electrode 34 comprises Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO), or other transparent conductive materials.

[0069] In some embodiments, the material of the second electrode 35 comprises ITO or IZO, or other transparent conductive materials.

[0070] In some embodiments, the light-emitting substrate 10 comprises a side-in light source, a narrow collimation angle light source or a direct type Mini-LED / Micro-LED (MLED) light source.

[0071] The display module 100 provided by the embodiment comprises the first liquid crystal layer 33 filled between the first substrate 31 and the second substrate 32, and the first electrode 34 and the second electrode 35 arranged between the first liquid crystal layer 33 and the first substrate 31. Thus, when the first electrode 34 and the second electrode 35 receive different voltages, an electric field for controlling the deflection of the first liquid crystal molecules 331 in the first liquid crystal layer 33 can be formed. The electric field formed by the first electrode 34 and the second electrode 35 can be a horizontal electric field, as shown in Figure 3 or Figure 6 Since the second electrode 35 is provided with a plurality of openings K, the first liquid crystal molecules 331 in the first liquid crystal layer 33 tilt along the radial direction of the openings K under the action of the electric field. Thus, the first liquid crystal molecules 331 controlled by the horizontal electric field formed by the first electrode 34 and the second electrode 35 have components in any mutually perpendicular direction. Thus, after the light emitted by the light-emitting substrate 10 passes through the privacy film 20 and enters the light-adjusting panel 30, the first liquid crystal molecules 331 in the light-adjusting panel 30 will diverge the light from the light-emitting substrate 10 passing through the privacy film 20, and the display module 100 realizes the sharing state. In the case that the first electrode 34 and the second electrode 35 receive the same voltage or no voltage, since there is no electric field acting on the first liquid crystal layer 33, as shown in Figure 2As shown, the first liquid crystal molecules 331 in the first liquid crystal layer 33 are arranged in an initial state, and the first liquid crystal molecules 331 do not play a role in diffusing the light transmitted through the privacy film 20 from the light-emitting substrate 10, so that the light transmitted through the light modulation panel 30 is the light transmitted through the privacy film 20 from the light-emitting substrate 10, and the light modulation panel 30 does not change the propagation direction of the light. Since the privacy film 20 blocks part of the light at the side view angle, the display screen content of the display module 100 becomes blurred or invisible at the side view angle, and the display screen content of the display module 100 is clearly visible at the front view angle. Therefore, in this case, the display module 100 realizes the privacy state.

[0072] That is, when the user needs the display module 100 to be in the sharing state, the user only needs to input different voltages to the first electrode 34 and the second electrode 35. When the user needs the display module 100 to be in the privacy state, the user only needs to input the same voltage or no voltage to the first electrode 34 and the second electrode 35. Further, the display module 100 can realize flexible switching between the privacy state and the sharing state, which can better improve the user experience. In some embodiments, the first liquid crystal molecules 331 in the first liquid crystal layer 33 include positive liquid crystals. The optical path difference Δ of the first liquid crystal layer 33 is 300 nm to 3000 nm. For example, the optical path difference Δ of the first liquid crystal layer 33 is 300 nm, 600 nm, 800 nm, 1500 nm, 2000 nm, or 3000 nm. Wherein, the optical path difference Δ of the first liquid crystal layer 33 = nd, n is the refractive index of the first liquid crystal layer 33, and d is the thickness of the first liquid crystal layer 33. The included angle between the second electrode 35 and the first liquid crystal molecules 331 in the first liquid crystal layer 33 is 0° to 45°, for example, 0°, 20°, 30°, or 45°. The response speed of the first liquid crystal molecules 331 can be improved by adjusting the angle between the second electrode 35 and the first liquid crystal molecules 331 in the first liquid crystal layer 33.

[0073] Reference Figure 2 The initial state of the first liquid crystal molecules 331 in the first liquid crystal layer 33 is that the included angle between the long axis of the first liquid crystal molecules 331 and the plane where the first substrate 31 is located is 90°±10°, that is, the first liquid crystal molecules 331 are vertically arranged or approximately vertically arranged on the plane where the first substrate 31 is located.

[0074] The initial state of the first liquid crystal molecules 331 refers to the state of the first liquid crystal molecules 331 when they are not subjected to the action of an electric field.

[0075] Alternatively, reference Figure 5 The initial state of the first liquid crystal molecules 331 in the first liquid crystal layer 33 is that the included angle between the long axis of the first liquid crystal molecules 331 and the plane where the first substrate 31 is located is 5°±5°, that is, the first liquid crystal molecules 331 are horizontally arranged or approximately horizontally arranged on the plane where the first substrate 31 is located.

[0076] In order to make the display module 100 realize the sharing state, the first electrode 34 and the second electrode 35 need to receive different voltages. After the first electrode 34 and the second electrode 35 receive different voltages, an electric field for controlling the deflection of the first liquid crystal molecules 331 in the first liquid crystal layer 33 can be formed, so as to change the propagation direction of light. The angle of deflection of the first liquid crystal molecules 331 can be controlled by the size of the electric field, that is, the size of the voltage difference on the first electrode 34 and the second electrode 35. The difference between the voltages received by the first electrode 34 and the second electrode 35 is 4V-20V, for example, 4V, 8V, 10V, 12V, 18V or 20V. The difference between the voltages received by the first electrode 34 and the second electrode 35 in this range can better control the first liquid crystal molecules 331 in the first liquid crystal layer 33 to better disperse light.

[0077] The second electrode 35 is provided with a plurality of openings K, which can be understood as a hollow or hollow part in the orthographic projection of the first substrate 31. In this way, after the second electrode 35 and the first electrode 34 receive different voltages, the direction of the electric field formed is along the radial direction of the opening K, and the first liquid crystal molecules 331 can disperse the light from the light-emitting substrate 10 to the periphery through the light shielding film 20.

[0078] The shape of the first electrode 34 and the second electrode 35 in the light modulation panel 30 can include various forms, and the possible shapes of the first electrode 34 and the second electrode 35 will be introduced below.

[0079] In combination with reference Figure 2 and Figure 4 , the first electrode 34 is located between the first substrate 31 and the second electrode 35; the second electrode 35 includes a plurality of first sub-electrodes 351 and a plurality of second sub-electrodes 352, the plurality of first sub-electrodes 351 extend along the first direction X and are arranged in sequence along the second direction Y, the plurality of second sub-electrodes 352 extend along the second direction Y and are arranged in sequence along the first direction X; the first direction X and the second direction Y intersect; the plurality of first sub-electrodes 351 and the plurality of second sub-electrodes 352 are cross-connected to enclose a plurality of openings K.

[0080] For example, with reference to Figure 4, the second electrode 35 includes 6 first sub-electrodes 351 and 7 second sub-electrodes 352, the 6 first sub-electrodes 351 extend along the first direction X and are sequentially and spacedly arranged along the second direction Y, the 7 second sub-electrodes 352 extend along the second direction Y and are sequentially and spacedly arranged along the first direction X, the 6 first sub-electrodes 351 and the 7 second sub-electrodes 352 are cross-connected to enclose a plurality of openings K, so that the second electrode 35 forms a grid shape. In this way, after the first electrode 34 and the second electrode 35 receive different voltages, an electric field for controlling the deflection of the first liquid crystal molecules 331 in the first liquid crystal layer 33 is formed, and the first liquid crystal molecules 331 corresponding to the plurality of openings K will diffuse the light from the light-emitting substrate 10 through the anti-peep film 20 under the action of the electric field, so that the display module 100 realizes the anti-peep state.

[0081] wherein the number of the first sub-electrodes 351 and the second sub-electrodes 352 can also be other integers, as long as the cross-connection of the first sub-electrodes 351 and the second sub-electrodes 352 can enclose a plurality of openings K.

[0082] In some embodiments, referring to Figure 4 , the first electrode 34 includes a surface electrode. That is, the first electrode 34 is a whole-surface electrode structure. Since the structure of the surface electrode is relatively simple, the electrode can be manufactured in a large area during preparation, reducing the fine processing steps required by complex electrode structures, thereby simplifying the process and improving the preparation efficiency of the display module 100.

[0083] In other embodiments, referring to Figure 10 , the first electrode 34 includes a plurality of first electrode blocks 341, and at least two first electrode blocks 341 are spacedly arranged along the first direction X. Since the at least two first electrode blocks 341 are independent of each other, only the first electrode block 341 of the target area can receive the voltage, so that a voltage difference is formed between the first electrode block 341 of the target area and the second electrode 35, thereby causing the deflection of the first liquid crystal molecules 331 in the target area, and there is no voltage difference or a smaller voltage difference between the first electrode blocks 341 outside the target area and the second electrode 35, which cannot cause the deflection of the first liquid crystal molecules 331 outside the target area, so as to independently open the anti-peep function of the target area, thereby realizing the multi-zone independent control of the anti-peep function of the display module 100.

[0084] Exemplarily, referring to Figure 10 , the first electrode 34 includes a plurality of first electrode blocks 341, and the plurality of first electrode blocks 341 are spacedly arranged along the first direction X, that is, the plurality of first electrode blocks 341 are spacedly arranged in a row along the first direction X. For example, the first electrode 34 includes 3 first electrode blocks 341, 4 first electrode blocks 341, 5 first electrode blocks 341, or 6 first electrode blocks 341, and can also include other numbers of first electrode blocks 341, which are not limited.

[0085] In this way, the display module 100 is divided into multiple independent regions along the first direction X, and the more the number of first electrode blocks 341 into which the first electrode 34 is divided, the more the display module 100 can realize multi-region privacy and sharing. The display module 100 can not only be divided into multiple independent regions along the first direction X to realize multi-region independent control in the first direction X, but also can continue to divide the first electrode blocks 341 into multiple independent regions along the second direction Y on the basis of being divided into multiple independent regions along the first direction X, that is, arrange the first electrode blocks 341 into multiple rows and multiple columns, so that the privacy control or sharing control of the regions in the display module 100 is more accurate.

[0086] For example, referring to Figure 11 , the first electrode 34 includes a plurality of first electrode blocks 341, and the plurality of first electrode blocks 341 are arranged into multiple rows along the first direction X and multiple columns along the second direction Y. That is, the plurality of first electrode blocks 341 in the first electrode 34 are arranged into multiple rows, and each row of the multiple rows of first electrode blocks 341 includes a plurality of first electrode blocks 341.

[0087] For example, along the first direction X, the number of first electrode blocks 341 is 3, 5, or 6. Along the second direction Y, the number of first electrode blocks 341 is 3, 5, or 6. In other embodiments, the number of first electrode blocks 341 in each row and the number of first electrode blocks 341 in each column can also be other integers, which are not limited.

[0088] Continuing to refer to Figure 11 , the light modulation panel 30 further includes a plurality of first signal lines L1 extending along the first direction X, a plurality of second signal lines L2 extending along the second direction Y, and a plurality of transistors MOS; the plurality of first electrode blocks 341 are respectively electrically connected to the second poles J2 of the plurality of transistors MOS; the plurality of first electrode blocks 341 located in the same row are respectively electrically connected to one first signal line L1 through the control poles J3 of the corresponding transistors MOS, and the plurality of first electrode blocks 341 located in the same column are respectively electrically connected to one second signal line L2 through the first poles J1 of the corresponding transistors MOS. That is, each first electrode block 341 is connected to the first signal line L1 and the second signal line L2 through a transistor MOS, and the privacy state or the sharing state of the region corresponding to the first electrode block 341 can be controlled in an active driving mode through the switching of the transistor MOS.

[0089] In some embodiments, the area of the display module 100 that is controlled by the privacy control or the sharing control can be more accurate. For example, the area of the first electrode block 341 can be equal to or approximately equal to the area of a plurality of pixels in the display module 100. For example, the area of the first electrode block 341 can be equal to or approximately equal to the area of 2 pixels or 5 pixels in the display module 100. Alternatively, the area of the first electrode block 341 can be equal to or approximately equal to the area of 1 pixel in the display module 100. In this case, since the area range of the display module 100 that is controlled by the privacy control or the sharing control is small, more accurate wide-narrow viewing angle control can be achieved. By further dividing the first electrode 34 into pixel-level partitions and connecting the first signal line L1 and the second signal line L2 through the transistor MOS switch, the first electrode block 341 can be designed as an active driving mode, and more accurate wide-narrow viewing angle control can be achieved. The voltage applied to each pixel-level first electrode block 341 controls the deflection of the first liquid crystal molecules 331 in the first liquid crystal layer 33 above the first electrode block 341, thereby achieving a wide viewing angle state. If no voltage is applied, the display module 100 is in a privacy state, and is in a narrow viewing angle state.

[0090] For example, the first signal line L1 can be a gate line in a gate driving circuit.

[0091] The shapes of the first electrode 34 and the second electrode 35 can also be other forms, for example, referring to Figure 12 The first electrode 34 includes a plurality of third sub-electrodes 343 and a plurality of fourth sub-electrodes 344. The plurality of third sub-electrodes 343 extend along the first direction X and are arranged in sequence along the second direction Y. The plurality of fourth sub-electrodes 344 extend along the second direction Y and are arranged in sequence along the first direction X. The plurality of third sub-electrodes 343 and the plurality of fourth sub-electrodes 344 are cross-connected. A third sub-electrode 343 is arranged between two adjacent first sub-electrodes 351, and a fourth sub-electrode 344 is arranged between two adjacent second sub-electrodes 352. That is, the plurality of third sub-electrodes 343 and the plurality of fourth sub-electrodes 344 in the first electrode 34 cross each other to form a first grid, the plurality of first sub-electrodes 351 and the plurality of second sub-electrodes 352 in the second electrode 35 cross each other to form a second grid, and adjacent electrodes in the plurality of third sub-electrodes 343, the plurality of fourth sub-electrodes 344, the plurality of first sub-electrodes 351, and the plurality of second sub-electrodes 352 cross each other to form a third grid.

[0092] In this way, the third sub-electrode 343 and the fourth sub-electrode 344 in the first electrode 34 and the first sub-electrode 351 and the second sub-electrode 352 in the second electrode 35 cross each other to form a sub-opening K1, and the first liquid crystal molecules 331 in the first liquid crystal layer 33 are inclined to the periphery of the sub-opening K1 under the action of an electric field, so that the first liquid crystal molecules 331 diverge the light passing through the light-emitting substrate 10 and the privacy film 20 to the periphery, and the display module 100 realizes the sharing state.

[0093] In combination with reference Figure 2 and Figure 13 , the first electrode 34 is located between the first substrate 31 and the second electrode 35; the second electrode 35 includes a plurality of second electrode blocks 350 arranged in an array, and at least one opening K is formed in each second electrode block 350. For example, as shown in Figure 13 , four openings K are formed in each second electrode block 350. In other embodiments, the number of openings K formed in the second electrode block 350 can also be 5, 6, or 8, or other numbers of openings, which are not limited here.

[0094] In this way, only the second electrode blocks 350 in the target area can receive a voltage, so that a voltage difference is formed between the second electrode blocks 350 in the target area and the first electrode 34, and no voltage difference is formed between the second electrode blocks 350 outside the target area and the first electrode 34, so as to independently turn on the privacy function of the target area, and further realize the multi-zone independent control of the privacy function of the display module 100. If the privacy state and the sharing state of multiple areas need to be synchronously switched, the same voltage can be applied to the second electrode blocks 350 in the area.

[0095] For example, continuing to refer to Figure 13 , the dimming panel 30 further includes a plurality of first connection lines S, and the plurality of first connection lines S are respectively electrically connected with the plurality of second electrode blocks 350; the display module 100 further includes a driving chip IC, and the driving chip IC is electrically connected with the plurality of first connection lines S; and the driving chip IC is configured to provide a driving signal to the plurality of first connection lines S.

[0096] In this way, the number of first connection lines S in the dimming panel 30 is equal to the number of second electrode blocks 350, and one second electrode block 350 is connected with one first connection line S, so that the driving chip IC can transmit a signal to the second electrode block 350 through the first connection line S corresponding to each second electrode block 350, so as to realize the switching of the privacy state or the sharing state of the area corresponding to the second electrode block 350.

[0097] In this way, the driving chip IC can only receive a voltage for the second electrode block 350 of the target area through the first connection line S, so as to form a voltage difference between the second electrode block 350 of the target area and the first electrode 34, and no or small voltage difference between the first electrode block 350 outside the target area and the first electrode 34, so as to control the privacy function of the target area to be turned on independently by the driving chip IC, and further to realize the multi-area independent control of the privacy function of the display module 100.

[0098] In some embodiments, the driving chip IC is further configured to provide a touch signal, and to transmit the touch signal and the driving signal to the plurality of first connection lines S in time division.

[0099] Since the driving chip IC is connected to the second electrode block 350 through the first connection line S, the driving chip IC can also provide a touch signal, so that the light modulation panel 30 can realize the touch function while realizing the privacy function. Since the touch function is integrated in the light modulation panel 30, it is not necessary to additionally prepare a film layer with a touch function, and it is not necessary to use a mask for preparing the film layer with the touch function. This not only saves the cost and improves the aperture ratio of the display module 100, but also increases the flexibility and timeliness of the display module 100.

[0100] In some embodiments, the shape of the first connection line S includes a straight line type, a broken line type, or a curved line type.

[0101] For example, as shown in FIG. 6, the shape of the first connection line S includes a straight line type. Figure 13 For example, as shown in FIG. 6, the shape of the first connection line S includes a straight line type.

[0102] For example, as shown in FIG. 7, the shape of the first connection line S includes a broken line type. Figure 14 For example, as shown in FIG. 7, the shape of the first connection line S includes a broken line type.

[0103] For example, the shape of the first connection line S can also include a curved line type.

[0104] In addition, the first connection line S in the broken line type or the curved line type can also avoid the occurrence of moire when the display module 100 displays a picture.

[0105] For example, as shown in FIG. 8, the shape of the first connection line S includes a curved line type. Figure 15The first electrode 34 includes a plurality of fifth sub-electrodes 345 extending along the second direction Y and arranged along the first direction X in sequence with intervals, and the second electrode 35 includes a plurality of sixth sub-electrodes 356 extending along the second direction Y and arranged along the first direction X in sequence with intervals, and a gap between adjacent two sixth sub-electrodes 356 constitutes the opening K; the first direction X and the second direction Y intersect; wherein, along the first direction X, the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 are arranged alternately. That is, the fifth sub-electrodes 345 and the sixth sub-electrodes 356 are both in strip shape and arranged alternately in a row with intervals.

[0106] The gap between the adjacent fifth sub-electrodes 345 and the sixth sub-electrodes 356 constitutes the opening K, and the first liquid crystal molecules 331 in the first liquid crystal layer 33 are inclined to the periphery of the opening K under the action of the electric field, so that the first liquid crystal molecules 331 diverge the light transmitted by the light-emitting substrate 10 through the privacy film 20 to the periphery, and the display module 100 realizes the sharing state.

[0107] In other embodiments, Figure 13 The plurality of first connection lines S in the display module 100 shown can also be electrically connected with the circuit board FPC.

[0108] In some embodiments, continuing to refer to Figure 15 The shape of any one of the fifth sub-electrodes 345 and the sixth sub-electrodes 356 includes a broken line shape or a curve shape. Since the fifth sub-electrodes 345 and the sixth sub-electrodes 356 in broken line shape or curve shape have electric field components along the first direction X and the second direction Y on the liquid crystal molecules 331 in the first liquid crystal layer 33 when a voltage is applied, the liquid crystal molecules 331 will only diverge the light to the periphery, so that the display module 100 realizes the sharing state.

[0109] Exemplarily, the shape of the fifth sub-electrodes 345 and the sixth sub-electrodes 356 includes a broken line shape, or the shape of the fifth sub-electrodes 345 and the sixth sub-electrodes 356 includes a curve shape, or the shape of the fifth sub-electrodes 345 includes a broken line shape and the shape of the sixth sub-electrodes 356 includes a curve shape, or the shape of the fifth sub-electrodes 345 includes a curve shape and the shape of the sixth sub-electrodes 356 includes a broken line shape.

[0110] Continuing to refer to Figure 15The interval between the adjacent fifth sub-electrode 345 and the sixth sub-electrode 356 along the first direction X is uniform. That is, the interval between the fifth sub-electrode 345 and the adjacent sixth sub-electrode 356 along the first direction X is equal to the interval between the fifth sub-electrode 345 and the adjacent sixth sub-electrode 356 along the first direction X. Alternatively, the interval between the sixth sub-electrode 356 and the adjacent fifth sub-electrode 345 along the first direction X is equal to the interval between the sixth sub-electrode 356 and the adjacent fifth sub-electrode 345 along the first direction X. In this way, when the voltage is applied to the first electrode 34 and the second electrode 35, the first liquid crystal molecules 331 in the first liquid crystal layer 33 of the display module 100 are consistent in the light dispersion effect of the light transmitted through the light blocking film 20 of the light-emitting substrate 10 under the action of the electric field, thereby facilitating the consistency of the visual effect of the display module 100 on the entire display surface.

[0111] For example, the width of the fifth sub-electrode 345 is 5 μm to 20 μm, such as 5 μm, 10 μm, 15 μm, or 20 μm. The width of the fifth sub-electrode 345 can also be adjusted according to actual needs, without limitation.

[0112] For example, the width of the sixth sub-electrode 356 is 5 μm to 20 μm, such as 5 μm, 10 μm, 15 μm, or 20 μm. The width of the sixth sub-electrode 356 can also be adjusted according to actual needs, without limitation.

[0113] The width of the fifth sub-electrode 345 refers to the dimension of the fifth sub-electrode 345 along the first direction X, and the width of the sixth sub-electrode 356 refers to the dimension of the sixth sub-electrode 356 along the first direction X.

[0114] For example, the interval between the adjacent fifth sub-electrode 345 and the sixth sub-electrode 356 is 5 μm to 20 μm, such as 5 μm, 10 μm, 15 μm, or 20 μm. The interval between the adjacent fifth sub-electrode 345 and the sixth sub-electrode 356 can also be adjusted according to actual needs, without limitation.

[0115] In some embodiments, the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 are made of the same material and are arranged in the same layer. In this way, the fifth sub-electrodes 345 and the sixth sub-electrodes 356 can be prepared at the same time, which can simplify the preparation process of the display module 100. The plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 arranged in the same layer means that the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 are prepared in the same process.

[0116] In some embodiments, the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 can be of the same material and located in different layers.

[0117] The plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 can be of the same material and located in different layers. Here, “different layers” means that the positions of the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 are located in different layers of the display module 100, that is, the distances from the fifth sub-electrodes 345 and the sixth sub-electrodes 356 to the first substrate 31 are not equal.

[0118] The plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 can be of the same material and located in different layers. Here, “different layers” means that the positions of the plurality of fifth sub-electrodes 345 and the plurality of sixth sub-electrodes 356 are located in different layers of the display module 100, that is, the distances from the fifth sub-electrodes 345 and the sixth sub-electrodes 356 to the first substrate 31 are not equal.

[0119] The light-adjusting panel 30 further includes a first insulating layer 36. For details, refer to Figure 2 When the first electrode 34 and the second electrode 35 are located in different layers, the first insulating layer 36 is arranged between the first electrode 34 and the second electrode 35. When the first electrode 34 and the second electrode 35 are located in the same layer, refer to Figure 15 The first insulating layer 36 is arranged between the first electrode 34 and the second electrode 35 in the same layer. The first insulating layer can prevent the risk of short circuit between the first electrode 34 and the second electrode 35.

[0120] In some embodiments, the material of the first insulating layer 36 includes inorganic insulating material or organic insulating material. For example, the inorganic insulating material can include SiN x or SiO2.

[0121] In combination with reference to Figure 4 , Figure 8 , Figure 12 and Figure 15 , the display module 100 includes a display area AA, a peripheral area BB, and a binding area CC, wherein the peripheral area BB is arranged around the display area AA, and the binding area CC is located on the side of the peripheral area BB away from the display area AA. The first electrode 34 and the second electrode 35 are located in the display area AA.

[0122] The display module 100 further includes: a first transmission line M1, a second transmission line M2, and a circuit board FPC. The circuit board FPC is located in the bonding area CC. The first transmission line M1 and the second transmission line M2 are both located in the peripheral area BB. One end of the first transmission line M1 extends to the bonding area CC and is electrically connected to the circuit board FPC, and the other end of the first transmission line M1 is electrically connected to the first electrode 34. One end of the second transmission line M2 extends to the bonding area CC and is electrically connected to the circuit board FPC, and the other end of the second transmission line M2 is electrically connected to the second electrode 35.

[0123] like Figure 8 , Figure 12 , Figure 15 The first electrode 34 in the display module 100 shown is connected to one end of the first transmission line M1 located in the peripheral area BB. The other end of the first transmission line M1 extends to the bonding area CC and is electrically connected to the circuit board FPC. The second electrode 35 is connected to one end of the second transmission line M2 located in the peripheral area BB. The other end of the second transmission line M2 extends to the bonding area CC and is electrically connected to the circuit board FPC.

[0124] In some embodiments, reference Figure 16 The privacy film 20 includes a light-blocking portion 21 and a light-transmitting portion 22; the light-blocking portion and the light-transmitting portion 22 extend along the second direction Y and are alternately arranged along the first direction X; the first direction X and the second direction Y intersect. In this case, the privacy film 20 is shaped like a venetian blind, and light from the light-emitting substrate 10 incident perpendicularly onto the privacy film 20 can pass through without obstruction; and along the first direction X, as the incident angle of the light increases, the light is gradually blocked by the light-blocking portion 21, and the amount of light transmitted decreases accordingly, thus narrowing the viewing angle of the display module 100 screen. In this way, the display module 100 can achieve privacy protection for vertical or horizontal viewing angles in the privacy state.

[0125] In other embodiments, reference is made to... Figure 17 The privacy film 20 has a light-shielding part 21 with multiple light-transmitting openings 210, and a light-transmitting part 22 is located in each light-transmitting opening 210. In this way, the light that is perpendicularly incident on the privacy film 20 from the light-emitting substrate 10 can pass through without obstruction, while the light at other angles is blocked by the light-shielding part 21. That is, the light around the light-transmitting opening 210 (i.e., the light around the light-transmitting opening 210) is blocked. The light coming out from the dimming panel 30 is the light that is perpendicularly incident on the privacy film 20 from the light-emitting substrate 10. The viewing angle of the display module 100 screen is narrowed. Under these circumstances, the display module 100 can achieve privacy protection in the up, down, left, and right viewing angles in the privacy state.

[0126] Continue to refer to Figure 2The display module 100 further comprises a display panel 40, which is arranged on the side of the light control panel 30 away from the light-emitting substrate 10; the display panel 40 comprises a color film substrate 42, and the color film substrate 42 comprises a black matrix layer 421 provided with a plurality of black matrix openings 420; the included angle between the side wall extension direction of the black matrix opening 420 and the side wall extension direction of the light-transmitting part 22 is an acute angle or perpendicular to each other. In this way, the light passing through the black matrix opening 420 and the light passing through the light-transmitting part 22 can be prevented from interfering with each other, so that the display module 100 can avoid the occurrence of moire when displaying a picture.

[0127] For example, the included angle between the side wall extension direction of the black matrix opening 420 and the side wall extension direction of the light-transmitting part 22 is ±10°, such as -10°, -5°, 0°, 5°, 8° or 10°.

[0128] In some embodiments, the shape of the opening K comprises a circle, an ellipse or a polygon. In this way, when a voltage is applied to the first electrode 34 and the second electrode 35, the first liquid crystal molecules 331 in the first liquid crystal layer 33 are inclined to the periphery of the opening K under the action of the electric field, so that the light passing through the privacy film 20 from the light-emitting substrate 10 is more dispersed to the periphery, so that the user can obtain more consistent display effect when watching the display module 100 from any angle, which widens the viewing angle and improves the user experience. It is also beneficial to enable the display module 100 to present more realistic and full color effects in the sharing state.

[0129] For example, in combination with reference to Figure 4 and Figure 7 the shape of the opening K comprises a rectangle. In other embodiments, the shape of the opening K can also comprise other shapes, such as a pentagon, a hexagon or an octagon, as long as the first liquid crystal molecules 331 in the first liquid crystal layer 33 can disperse the light passing through the privacy film 20 from the light-emitting substrate 10 to the periphery under the action of the electric field.

[0130] For example, in combination with reference to Figure 8 the shape of the opening K comprises an ellipse, so that the horizontal electric field formed by the first electrode 34 and the second electrode 35 can control the first liquid crystal molecules 331 to incline in the horizontal direction and the vertical direction, and the liquid crystal molecules 331 disperse the light passing through the privacy film 20 from the light-emitting substrate 10 to the periphery, so as to realize the sharing state of the display module 100.

[0131] For example, in combination with reference to Figure 9The shape of the opening K includes a circle, so that when a voltage is applied to the first electrode 34 and the second electrode 35, the first liquid crystal molecules 331 in the first liquid crystal layer 33 will disperse the light passing through the light-emitting substrate 10 and the light-blocking film 20 more uniformly in all directions under the action of the electric field, which is more conducive to improving the display effect of the display module 100.

[0132] It should be noted that the shape of the opening K includes a circle, which means that the shape of the opening K can be a standard circle, but is not limited to a standard circle, and can also be an approximate circle.

[0133] Continuing to refer to Figure 2 The color film substrate 42 further includes a substrate 422 and a color filter layer 423, and the color filter layer 423 and the black matrix layer 421 are both located on the substrate 422. The color filter layer 423 includes a plurality of color filter portions, and one color filter portion is arranged in one black matrix opening 420. The plurality of color filter portions include color filter portions of multiple colors, so that the reflectivity of the display module 100 to external ambient light can be effectively reduced by the black matrix layer 421, and the normal light emission of the display module 100 can be avoided. The adverse effects of the black matrix layer 421.

[0134] Referring to Figure 18 The display panel 40 can also be arranged between the light-emitting substrate 10 and the light-blocking panel 30. While the light-blocking panel 30 realizes the privacy function, the display module 100 further includes a protective film 70 arranged on the side of the second substrate 32 of the light-blocking panel 30 away from the first substrate 31. In this way, the cover plate 60 does not need to be arranged on the light-emitting side of the display module 100, which can improve the screen-to-body ratio and realize an integrated effect.

[0135] Illustratively, the protective film 70 includes an anti-reflection layer (Anti-Reflection, AR), an anti-glare layer (Anti-Glare, AG), and an anti-fingerprint layer (Anti-Fingerprint, AF).

[0136] The display mode of the display panel 40 is a vertical alignment (Vertical Alignment, VA) display mode, an in-plane switching (In Plane Switching, IPS) display mode, or a fringe field switching (Fringe Field Switching, FFS) display mode.

[0137] The display panel 40 further comprises an array substrate 41 opposite to the color filter substrate 42, a second liquid crystal layer 43, a fourth electrode 44 and a fifth electrode 45, the array substrate 41 is closer to the light-emitting substrate 10 than the color filter substrate 42; the second liquid crystal layer 43 is filled between the color filter substrate 42 and the array substrate 41; the fourth electrode 44 and the fifth electrode 45 are arranged between the second liquid crystal layer 43 and the array substrate 41.

[0138] With reference to Figure 2 , the display panel 40 further comprises a first polarizer 48 and a second polarizer 49 opposite to each other, the first polarizer 48 is arranged on the side of the array substrate 41 away from the color filter substrate 42, and the second polarizer 49 is arranged on the side of the color filter substrate 42 away from the array substrate 41. The angle between the transmission axis of the first polarizer 48 and the transmission axis of the second polarizer 49 is 80°-100°, for example, 80°, 85°, 90°, 95° or 100°.

[0139] For example, the transmission axis of the first polarizer 48 is -5°-5°, for example, -5°, 0° or 5°, and the transmission axis of the second polarizer 49 is 85°-95°, for example, 85°, 90° or 95°.

[0140] For example, the transmission axis of the second polarizer 49 is -5°-5°, for example, -5°, 0° or 5°, and the transmission axis of the first polarizer 48 is 85°-95°, for example, 85°, 90° or 95°.

[0141] With the increasing attention of users to personal privacy and information security, the information protection in the display area of the display module 100 can be realized by switching between narrow viewing angle (anti-peeping state) and wide viewing angle (sharing state) through the light-adjustable panel 30, with reference to Figure 19 , the current display module 100 usually has a camera 50, due to the existence of the camera 50, the background hacker can easily attack the face information through the camera 50, which makes the user's information exist the risk of leakage, the current camera 50 switch of the display module 100 is mainly realized by the physical button N sliding to close and open (as shown in Figure 20 ), or the camera 50 is always in the open mode (as shown in Figure 21 ), both of which cannot realize one-key control or active protection function, and the former has space and cost problems, and the latter cannot guarantee the safety of face information.

[0142] In order to solve the above problems, with reference to Figure 22, the display module 100 has a display area AA and a device setting area DD, the device setting area DD is located beside the display area AA; the light-emitting substrate 10 and the anti-peep film 20 are located outside the device setting area DD; the first electrode 34 is located in the display area AA, the second electrode 35 and part of the first liquid crystal layer 33 are both located in the display area AA, and the second electrode 35 and the other part of the first liquid crystal layer 33 are both located in the device setting area DD; the display module 100 further comprises a camera 50, the camera 50 is located in the device setting area DD and is located on the side of the light modulation panel 30 close to the light-emitting substrate 10.

[0143] With reference to the foregoing Figure 22 , the light modulation panel 30 further comprises: a third electrode 51 located in the device setting area DD and located on the side of the first liquid crystal layer 33 close to the first substrate 31; the second electrode 35, the third electrode 51 and the first liquid crystal layer 33 all cover the camera 50.

[0144] In this way, by applying a voltage on the third electrode 51 and the second electrode 35, an electric field for controlling the deflection of the first liquid crystal molecules 331 in the first liquid crystal layer 33 located in the device setting area DD can be formed, and since a plurality of openings K are provided in the second electrode 35, the first liquid crystal molecules 331 in the first liquid crystal layer 33 tilt around the openings K under the action of the electric field, so that the first liquid crystal molecules 331 disperse the light transmitted through the anti-peep film 20 from the light-emitting substrate 10 to the surroundings to form a mist, blurring the shooting effect of the camera 50 (as shown in Figure 24 ), achieving the protection of face information, or the display module 100 can also actively open the camera blurring function according to the active monitoring of the system that there is a security risk. In the case where no voltage is applied to the first electrode 34 and the second electrode 35, since there is no electric field acting on the first liquid crystal layer 33, the first liquid crystal molecules 331 in the first liquid crystal layer 33 are arranged in the initial state, and the first liquid crystal layer 33 does not adjust the light in the device setting area DD (as shown in Figure 22 ), which can avoid interference with the camera shooting and perform normal shooting function.

[0145] In addition, with reference to the foregoing Figure 23 , since the third electrode 51 and the first electrode 34 are spaced apart from each other, the switching between the narrow viewing angle (anti-peep state) and the wide viewing angle (sharing state) of the display area AA does not interfere with the switching between the blurring of the camera 50 shooting effect and the normal shooting function of the device setting area DD, and the two can be independently controlled to realize their respective functions. That is, the display module 100 has four states, i.e., the display area AA sharing state and the camera 50 protection opening, the display area AA sharing state and the camera 50 normal use, the display area AA anti-peep state and the camera 50 protection opening, and the display area AA anti-peep state and the camera 50 normal use.

[0146] The device setting area DD is provided with a camera blurring function. The camera blurring function can be designed according to actual needs, or can be started according to system security software. When the camera blurring function is identified or triggered, a certain voltage is applied between the third electrode 51 and the first electrode 34 in the device setting area DD of the light adjusting panel 30, so that the lens of the camera 50 is blurred.

[0147] For example, the distance between the third electrode 51 and the first electrode 34 is 2 μm to 200 μm, for example, 2 μm, 20 μm, 100 μm, 150 μm or 200 μm. The distance between the third electrode 51 and the first electrode 34 is within this range, which not only effectively avoids the electrical connection between the third electrode 51 and the first electrode 34, but also increases the sectional area of the third electrode 51 in the device setting area DD, improves the blurring effect of the device setting area DD on the camera 50, and achieves the purpose of protecting facial information.

[0148] In some embodiments, the voltage difference input on the third electrode 51 and the second electrode 35 can be 2V to 30V, for example, 2V, 10V, 20V, 25V or 30V. The voltage difference between the third electrode 51 and the second electrode 35 within this range can tilt the first liquid crystal molecules 331 in the first liquid crystal layer 33 vertically arranged in this area to the four directions, disperse the light to the four directions to form a mist, blur the shooting effect, and achieve the purpose of protecting facial information.

[0149] The arrangement state of the first liquid crystal molecules 331 in the first liquid crystal layer 33 in the device setting area DD when no voltage is applied to the third electrode 51 and the second electrode 35 is the same as the state of the first liquid crystal molecules 331 in the first liquid crystal layer 33 in the display area AA when no voltage is applied to the first electrode 34 and the second electrode 35, which will not be described here.

[0150] The shape design of the third electrode 51 and the second electrode 35 in the device setting area DD can be the same as that of the first electrode 34 and the second electrode 35, which will not be described here.

[0151] In some embodiments, the third electrode 51 and the first electrode 34 are made of the same material and are arranged in the same layer. In this way, the third electrode 51 and the first electrode 34 can be prepared at the same time, which can simplify the preparation process of the display module 100.

[0152] Reference Figure 22 Or Figure 24 The second polarizer 49 is also located in the device setting area DD, and the first polarizer 48 is only located in the display area AA, which can improve the light transmittance of the display module 100.

[0153] Reference Figure 25 Or Figure 26, the device setting area DD of the display module 100 is provided with the third electrode 51, the display panel 40 is arranged on the side of the light modulation panel 30 away from the light-emitting substrate 10, and part of the display panel 40 is located in the display area AA and the other part of the display panel 40 is located in the device setting area DD. In the display panel 40 located in the device setting area DD, the fourth electrode 44, the fifth electrode 45, the second liquid crystal layer 43, the first polarizer 48, the black matrix layer 421 and the color filter layer 423 are not arranged. In this way, the second liquid crystal layer 43 does not adjust light in the device setting area DD, and the influence of the second liquid crystal layer 43 on the imaging of the camera 50 can be avoided. When taking a photo, the light amount of the device setting area DD can be improved.

[0154] wherein, Figure 25 is a state in which the display area AA of the display module 100 is in a shared state and the camera 50 is normally used, Figure 26 is a state in which the display area AA of the display module 100 is in a shared state and the camera 50 is protected and opened.

[0155] Referring to Figure 27 or Figure 28 , the device setting area DD of the display module 100 is provided with the third electrode 51, the display panel 40 is arranged on the side of the light modulation panel 30 away from the light-emitting substrate 10, and part of the display panel 40 is located in the display area AA and the other part of the display panel 40 is located in the device setting area DD. In the display panel 40 located in the device setting area DD, the fourth electrode 44, the fifth electrode 45, the second liquid crystal layer 43, the first polarizer 48, the black matrix layer 421 and the color filter layer 423 are not arranged. In this way, the second liquid crystal layer 43 does not adjust light in the device setting area DD, and the influence of the second liquid crystal layer 43 on the imaging of the camera 50 can be avoided. When taking a photo, the light amount of the device setting area DD can be improved.

[0156] In this case, referring to Figure 27 or Figure 28 , the cover plate 60 can be arranged on the side of the display panel 40 away from the light-emitting substrate 10, and the cover plate 60 is located in the display area AA and the device setting area DD. In this way, the gap in the device setting area DD due to the absence of the display panel 40 can be compensated. In other embodiments, the cover plate 60 can not be arranged in the display module 100, so that the cost can be reduced.

[0157] wherein, Figure 27 is a state in which the display area AA of the display module 100 is in a shared state and the camera 50 is normally used, Figure 28 is a state in which the display area AA of the display module 100 is in a shared state and the camera 50 is protected and opened.

[0158] In some embodiments, when the third electrode 51 is disposed in the device disposition region DD of the display module 100, the display module 100 further comprises a third transmission line (not shown) disposed in the peripheral region BB, one end of the third transmission line extending to the binding region CC and electrically connected to the circuit board FPC, and the other end of the third transmission line electrically connected to the third electrode 51.

[0159] In other embodiments, one end of the third transmission line extends to the binding region CC and is electrically connected to the driving chip, and the other end of the third transmission line is electrically connected to the third electrode 51.

[0160] Embodiments of the present disclosure further provide a display device 1000. Referring to Figure 29 , the display device 1000 comprises the display module 100 according to any of the above embodiments and a circuit board 200 electrically connected to the display module 100.

[0161] The display device 1000 described above can be any display device that displays both motion (e.g., video) and still (e.g., still images) and both text and graphics. More specifically, it is contemplated that the display module of the embodiments described herein can be implemented in or associated with a variety of electronic devices such as, but not limited to, mobile telephones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 players, camcorders, game consoles, wrist watches, clocks, calculators, television monitors, flat-panel displays, computer monitors, auto displays (e.g., odometer display, etc.), cockpit controls and / or displays, camera view displays (e.g., display of a rear view camera in a vehicle), electronic photographs, electronic billboards or signs, projections, architectural structures, packaging, and aesthetic structures (e.g., display of images on a piece of jewelry) and the like.

[0162] Embodiments of the present disclosure further provide a method for manufacturing a display module 100, comprising the following steps:

[0163] Step S1: forming a light modulation panel.

[0164] Step S1 comprises:

[0165] Step S11: forming a first electrode. Specifically, a first electrode film is formed on a first substrate, a first mask is disposed on the side of the first electrode film away from the first substrate, and the first electrode film is etched with the first mask as a mask to form a first electrode.

[0166] Step S12: forming a first insulating film. Specifically, a first insulating film is formed on the side of the first electrode away from the first substrate, a second mask is arranged on the side of the first insulating film away from the first substrate, and the first insulating film is etched with the second mask as a mask to form a first insulating layer.

[0167] Step S13: forming a second electrode. Specifically, a second electrode film is formed on the side of the first insulating layer away from the first substrate, a third mask is arranged on the side of the second electrode film away from the first substrate, and the second electrode film is etched with the third mask as a mask to form a second electrode.

[0168] Step S14: coating a first liquid crystal molecule on the side of the second electrode away from the first substrate, arranging a second substrate on the side of the first liquid crystal molecule away from the first substrate, and forming a first liquid crystal layer between the first substrate and the second substrate.

[0169] Step S2: forming a display panel. The structure of the display panel can refer to the description above, and will not be described here.

[0170] Step S3: adhering the light-adjusting panel to the display panel.

[0171] Step S4: arranging a peep-proof film. The peep-proof film includes an opaque part and a transparent part. The structure of the peep-proof film can refer to the description above, and will not be described here.

[0172] Subsequently, the display module is assembled and tested to complete the manufacturing process of the display device, and finally the product is delivered to the end customer.

[0173] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display module, characterized by The display module comprises: a light-emitting substrate; a privacy film arranged on one side of the light-emitting substrate; a light-adjusting panel arranged on the side of the privacy film away from the light-emitting substrate; the light-adjusting panel comprises: a first substrate and a second substrate arranged oppositely, the first substrate being closer to the privacy film than the second substrate; a first liquid crystal layer filled between the first substrate and the second substrate; a first electrode and a second electrode arranged between the first liquid crystal layer and the first substrate, the first electrode and the second electrode being used to receive different voltages to control the light transmission state of the first liquid crystal layer; a plurality of openings are arranged in the second electrode.

2. The display module of claim 1, wherein, The first electrode is located between the first substrate and the second electrode. The second electrode comprises a plurality of first sub-electrodes and a plurality of second sub-electrodes, the plurality of first sub-electrodes extending along a first direction and being arranged in sequence along a second direction, the plurality of second sub-electrodes extending along the second direction and being arranged in sequence along the first direction; the first direction and the second direction intersect; the plurality of first sub-electrodes and the plurality of second sub-electrodes are cross-connected to enclose the plurality of openings.

3. The display module of claim 2, wherein, The first electrode comprises a planar electrode; or The first electrode comprises a plurality of first electrode blocks, at least two first electrode blocks being arranged in sequence along the first direction.

4. The display module of claim 3, wherein, The first electrode comprises a plurality of first electrode blocks, the plurality of first electrode blocks being arranged as a plurality of rows along the first direction and a plurality of columns along the second direction; The light-adjusting panel further comprises a plurality of first signal lines extending along the first direction, a plurality of second signal lines extending along the second direction, and a plurality of transistors; The plurality of first electrode blocks are respectively electrically connected to the second electrodes of the plurality of transistors; the plurality of first electrode blocks located in the same row are respectively electrically connected to one of the first signal lines through the control electrodes of the corresponding transistors, and the plurality of first electrode blocks located in the same column are respectively electrically connected to one of the second signal lines through the first electrodes of the corresponding transistors.

5. The display module of claim 2, wherein, The first electrode comprises a plurality of third sub-electrodes and a plurality of fourth sub-electrodes, the plurality of third sub-electrodes extending along a first direction and being arranged in sequence along a second direction, the plurality of fourth sub-electrodes extending along the second direction and being arranged in sequence along the first direction; the plurality of third sub-electrodes and the plurality of fourth sub-electrodes are cross-connected; wherein the third sub-electrodes are arranged between adjacent two first sub-electrodes, and the fourth sub-electrodes are arranged between adjacent two second sub-electrodes.

6. The display module of claim 1, wherein, The first electrode is located between the first substrate and the second electrode. The second electrode comprises a plurality of second electrode blocks arranged in an array, and at least one opening is arranged in each second electrode block.

7. The display module of claim 6, wherein, The light-adjusting panel further comprises a plurality of first connection lines, and the plurality of first connection lines are respectively electrically connected to the plurality of second electrode blocks. The display module further comprises a driving chip, the driving chip is electrically connected to the plurality of first connection lines, and the driving chip is configured to provide a driving signal to the plurality of first connection lines.

8. The display module of claim 7, wherein, The driving chip is further configured to provide a touch signal, and transmit the touch signal and the driving signal to the plurality of first connection lines in time division manner; and / or, The shape of the first connection line comprises a straight line type, a broken line type or a curve shape.

9. The display module of any one of claims 2-8, wherein, The shape of the opening comprises a circular shape, an elliptical shape or a polygonal shape.

10. The display module of claim 1, wherein, The first electrode comprises a plurality of fifth sub-electrodes extending along a second direction and arranged in sequence and in a spaced manner along a first direction, the second electrode comprises a plurality of sixth sub-electrodes extending along the second direction and arranged in sequence and in a spaced manner along the first direction, and a gap between adjacent two sixth sub-electrodes constitutes the opening; the first direction and the second direction intersect; Wherein, along the first direction, the plurality of fifth sub-electrodes and the plurality of sixth sub-electrodes are arranged alternately.

11. The display module of claim 10, wherein, The shape of any one of the fifth sub-electrodes and the sixth sub-electrodes comprises a broken line shape or a curve shape; and / or, Along the first direction, the spacing between adjacent fifth sub-electrodes and sixth sub-electrodes is uniform.

12. The display module of any one of claims 10-11, wherein, The plurality of fifth sub-electrodes and the plurality of sixth sub-electrodes are of the same material and are arranged in the same layer.

13. The display module of claim 1, wherein, The privacy film comprises an opaque part and a transparent part; The opaque part and the transparent part extend along a second direction and are arranged alternately along a first direction; the first direction and the second direction intersect; or, The opaque part is provided with a plurality of transparent openings, and the transparent part is located in each of the transparent openings.

14. The display module of claim 13, wherein, The display module further comprises a display panel, the display panel is arranged on a side of the light modulation panel away from the light-emitting substrate; or, is arranged between the light modulation panel and the light-emitting substrate; Wherein, the display panel comprises a color filter substrate, the color filter substrate comprises a black matrix layer, and the black matrix layer is provided with a plurality of black matrix openings; the included angle between the extension direction of the side wall of the black matrix opening and the extension direction of the side wall of the transparent part is an acute angle.

15. The display module of claim 1, wherein, The display module has a display area and a device setting area, and the device setting area is located beside the display area. The light-emitting substrate and the privacy film are located outside the device setting area. The first electrode is located in the display area, a part of the second electrode and the first liquid crystal layer are located in the display area, and another part of the second electrode and the first liquid crystal layer are located in the device setting area. The display module further comprises a camera, the camera is located in the device setting area and on a side of the light modulation panel close to the light-emitting substrate. The light modulation panel further comprises a third electrode located in the device setting area and on a side of the first liquid crystal layer close to the first substrate. The second electrode, the third electrode and the first liquid crystal layer all cover the camera.

16. The display module of claim 15, wherein, The third electrode and the first electrode are of the same material and are arranged in the same layer.

17. A display device comprising: Comprise: The display module of any one of claims 1-16; And, A circuit board connected with the display module.

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