Shading module, display device and electronic equipment

Abstract

According to the shading module, the display device and the electronic equipment, the shading module is used for the display device, the display device further comprises a display module and a light-emitting module, the light-emitting module, the shading module and the display module are sequentially arranged in a stacked mode, the light-emitting module is used for emitting light to the shading module, and the display module is used for receiving the light for displaying. The shading module comprises a device layer and a crystal layer, the crystal layer is arranged on the surface, facing the display module, of the device layer in a stacked mode, the device layer is used for vibrating to emit ultrasonic waves to the crystal layer, and the crystal layer is used for receiving the ultrasonic waves and switching from a first state to a second state. The crystal layer is a light-transmitting component so that the shading module is light-transmitting; when the crystal layer is in the second state, the crystal layer is a light-proof component to enable the shading module to shade light, so that when the display module is in the non-display state, the display module cannot receive light from the light-emitting module, and halo and scattering phenomena are avoided.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a shading module, a display device and an electronic device. Background Art

[0002] As people have higher and higher demands for the picture quality of display products, the halo or scattering phenomenon around the high-brightness area of ​​the screen has become an important factor affecting the picture quality. In the existing technology, the display partitions are usually increased or a light-absorbing layer is set between the display partitions to prevent light interference between the partitions. However, due to light leakage caused by mechanical damage or material attenuation of liquid crystal and other structures, the display will still have halo or scattering and affect the picture quality. Summary of the invention

[0003] The purpose of the present invention is to provide a shading module, a display device and an electronic device to solve the problem of halo or scattering around the high-brightness area of ​​the screen.

[0004] To achieve the purpose of the present invention, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a shading module for a display device, wherein the display device further comprises a display module and a light-emitting module, wherein the light-emitting module, the shading module and the display module are stacked in sequence, wherein the light-emitting module is used to emit light to the shading module, and the display module is used to receive the light for display; the shading module comprises a device layer and a crystal layer, wherein the crystal layer is stacked on a surface of the device layer facing the display module, wherein the device layer is used to vibrate to emit ultrasonic waves to the crystal layer, and wherein the crystal layer is used to receive the ultrasonic waves and switch from a first state to a second state; wherein when the crystal layer is in the first state, the crystal layer is a light-transmitting component to allow the shading module to transmit light; and when the crystal layer is in the second state, the crystal layer is an opaque component to allow the shading module to shield light.

[0006] In one embodiment, the device layer includes a first electrode layer, a second electrode layer and a vibration layer, the first electrode layer and the second electrode layer are arranged relative to each other, the vibration layer is arranged between the first electrode layer and the second electrode layer, the crystal layer is stacked on the surface of the first electrode layer facing away from the second electrode layer, and the first electrode layer and the second electrode layer are used to input electrical signals to drive the vibration layer to vibrate.

[0007] In one embodiment, the material of the vibration layer includes any one or a combination of more than one of barium titanate, lithium niobate, sodium bismuth titanate and quartz.

[0008] In one embodiment, the material of the crystal layer includes any one or a combination of multiple of lithium tantalate crystals, silicon crystals, lithium niobate crystals, barium titanate crystals and potassium sodium niobate crystals.

[0009] In one embodiment, the device layer also includes a supporting layer, which is arranged between the first electrode layer and the second electrode layer and connected to the vibration layer. The supporting layer has at least one cavity, and the gas in the cavity is used to vibrate under the drive of the vibration layer.

[0010] In one embodiment, the device layer further includes a first insulating layer and a second insulating layer, the first insulating layer is disposed on a surface of the first electrode layer facing the second electrode layer, and the second insulating layer is disposed on a surface of the second electrode layer facing the first electrode layer.

[0011] In one embodiment, the display module includes a plurality of display units arranged in an array, the shading module includes a plurality of shading regions corresponding one by one to the plurality of display units, the crystal layer in the shading region corresponding to the luminous display unit is in the first state, and the crystal layer in the shading region corresponding to the non-luminous display unit is in the second state.

[0012] In a second aspect, the present invention further provides a display device, comprising a display module, a light-emitting module and a shading module described in any one of the various embodiments of the first aspect, wherein the light-emitting module, the shading module and the display module are stacked in sequence, the light-emitting module is used to emit light to the shading module, and the display module is used to receive the light for display.

[0013] In one embodiment, the display module includes a plurality of display units arranged in an array, the shading module includes a plurality of shading areas corresponding one-to-one to the plurality of display units, the crystal layer in the shading area corresponding to the luminous display unit is in the first state, and the crystal layer in the shading area corresponding to the non-luminous display unit is in the second state; the display device also includes a plurality of non-circuit units corresponding one-to-one to the plurality of display units, and the plurality of non-circuit units are electrically connected to the device layers in the plurality of shading areas and the plurality of display units, respectively; when the display unit is luminous, the display unit outputs a first signal to the non-circuit unit, and the non-circuit unit outputs a second signal to the device layer in the corresponding shading area, so that the crystal layer in the corresponding shading area is in the first state; when the display unit is not luminous, the display unit outputs the second signal to the non-circuit unit, and the non-circuit unit outputs the first signal to the device layer in the corresponding shading area, so that the crystal layer in the corresponding shading area is in the second state, and the first signal and the second signal have the same amplitude and opposite phase.

[0014] In a third aspect, the present invention further provides an electronic device, comprising the display device described in any one of the various embodiments of the second aspect.

[0015] A shading module is arranged between a display module and a light-emitting module, wherein the shading module includes a device layer and a crystal layer, wherein the crystal layer is stacked on a surface of the device layer facing the display module, wherein the device layer is used to vibrate to emit ultrasonic waves to the crystal layer, and wherein the crystal layer is used to receive ultrasonic waves and switch from a first state to a second state, wherein when the crystal layer is in the first state, the crystal layer is a light-transmitting component to allow the shading module to transmit light; and when the crystal layer is in the second state, the crystal layer is an opaque component to allow the shading module to shield light, so that when the display module is in a non-display state, the display module will not receive light from the light-emitting module, thereby avoiding the generation of halo and scattering phenomena. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of a display module of an embodiment;

[0018] Figure 2 is a schematic diagram of a display device according to an embodiment;

[0019] Figure 3 is a schematic diagram of a display device according to another embodiment;

[0020] Figure 4 is a schematic diagram of a display device according to another embodiment.

[0021] Description of reference numerals:

[0022] 1000-display device;

[0023] 100-shading module;

[0024] 10-device layer, 11-first electrode layer, 12-second electrode layer, 13-vibration layer, 14-support layer, 141-cavity, 142-partition, 15-first insulating layer, 16-second insulating layer;

[0025] 20-crystal layer;

[0026] 30-light-shielding area, 31-first light-shielding area, 32-second light-shielding area, 33-third light-shielding area;

[0027] 40-base material layer;

[0028] 200-display module, 201-display unit, 2011-first display unit, 2012-second display unit, 2013-third display unit, 202-source driver chip, 203-gate driver chip, 204-scan line, 205-data line;

[0029] 300-light-emitting module;

[0030] 400-shading driver chip;

[0031] 500-non-circuit unit;

[0032] 600- Public power supply. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0035] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more of the related listed items.

[0036] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] Please refer to Figure 1 The present invention provides an electronic device, including the display device 1000 in the embodiment of the present invention. Optionally, the electronic device can be an electronic reader, a television, an electronic book, a display, a mobile phone, etc., without limitation.

[0038] Please refer to Figures 1 to 3 The present invention further provides a display device 1000, including a display module 200, a light-emitting module 300 and a shading module 100 in an embodiment of the present invention. The light-emitting module 300, the shading module 100 and the display module 200 are stacked in sequence. The light-emitting module 300 is used to emit light to the shading module 100, and the display module 200 is used to receive light for display.

[0039] When the display device 1000 is a Mini LED display screen, its light-emitting module 300 includes a plurality of LED lamp beads arranged in an array, and the size of the LED lamp beads is between 100 and 200 microns to achieve fine local dimming, so that the screen can display different brightness in different areas, thereby improving contrast and image details. The display module 200 includes a plurality of display units 201 arranged in an array, each display unit 201 includes a pixel, each pixel includes three sub-pixels, or each display unit 201 includes a plurality of pixels, each pixel includes three sub-pixels that can emit red light, green light and blue light respectively, and each sub-pixel corresponds to an LED lamp bead.

[0040] In one embodiment, when the display device 1000 is displaying, the LED lamp beads in different display units 201 emit light of different intensities to the corresponding sub-pixels according to the image data. In another embodiment, when the display device 1000 is displaying, multiple LED lamp beads on the light-emitting module 300 emit light at the same time, and the display module 200 may also include a liquid crystal layer, and multiple liquid crystals in the liquid crystal layer deflect or change physical states under the control of corresponding scanning signals and corresponding data signals, so that the light emitted by the light-emitting module 300 can be projected to the corresponding position of the screen through structures such as liquid crystals and polarizers to form a picture.

[0041] Since LED lamp beads are point light sources, and structures such as liquid crystals and polarizers are affected by environmental factors or material attenuation, when the display device 1000 is displaying, one of the display units 201 of the display device 1000 will be affected by the light source received by other display units 201 and cause halo or scattering. The risk of halo or scattering in the surrounding area of ​​the display unit 201 with higher brightness is higher. Therefore, a shading module 100 in an embodiment of the present invention is provided. The shading module 100 can control the light emitted by the light-emitting module 300 to the display module 200, so as to prevent the light from different display units 201 from affecting each other and causing halo or scattering.

[0042] Optionally, when the display device 1000 is an LCD display, the light source of the light emitting module 300 can directly emit light to the display module 200, or the light source can be arranged on the side of the light emitting module 300, and emit light to the display module 200 through reflection or refraction of the light guide structure, without limitation. Since the failure of the light emitting module 300 or the failure of the liquid crystal also has the risk of halo or scattering, the light shielding module 100 in the embodiment of the present invention can also be used to prevent the light of different display units 201 from affecting each other and causing halo or scattering.

[0043] Please refer to Figure 2 and Figure 3 The present invention provides a shading module 100, which is used for a display device 1000. The display device 1000 also includes a display module 200 and a light-emitting module 300. The light-emitting module 300, the shading module 100 and the display module 200 are stacked in sequence. The light-emitting module 300 is used to emit light to the shading module 100, and the display module 200 is used to receive light for display. The shading module 100 includes a device layer 10 and a crystal layer 20. The crystal layer 20 is stacked on the surface of the device layer 10 facing the display module 200. The device layer 10 is used to vibrate to emit ultrasonic waves to the crystal layer 20, and the crystal layer 20 is used to receive ultrasonic waves and switch from a first state to a second state. When the crystal layer 20 is in the first state, the crystal layer 20 is a light-transmitting component to make the shading module 100 light-transmitting; when the crystal layer 20 is in the second state, the crystal layer 20 is an opaque component to make the shading module 100 light-shielding.

[0044] Optionally, when the device layer 10 stops vibrating, that is, the device layer 10 stops emitting ultrasonic waves to the crystal layer 20, the crystal layer 20 can switch from the second state to the first state; or, when the vibration frequency of the device layer 10 changes, that is, the device layer 10 emits ultrasonic waves of different frequencies to the crystal layer 20, the crystal layer 20 can switch from the second state to the first state.

[0045] Optionally, within several consecutive time periods, which may be frames, seconds, milliseconds, etc., without limitation, the device layer 10 may vibrate at the same frequency or different frequencies within different time periods, so that the crystal layer 20 is in the first state or the second state within different time periods.

[0046] Optionally, the crystal layer 20 is a layered structure or a thin film structure formed by photonic crystals. The photonic crystals are artificial microstructured light-transmitting bodies formed by the periodic arrangement of media with different refractive indices, and have photonic bandgap characteristics. When the photonic crystals of the crystal layer 20 receive the ultrasonic waves emitted by the device layer 10, the crystal layer 20 undergoes Bragg diffraction, that is, the crystal layer 20 undergoes reversible periodic strain under the action of the ultrasonic waves, thereby changing the refractive index, density distribution, etc. of the crystal layer 20. Since the photonic bandgap of the crystal layer 20 depends on the periodic changes of the crystal, any changes will affect the position of the photonic bandgap, and the light waves with wavelengths within the bandgap range cannot propagate. Therefore, the wavelength within the bandgap range of the photonic bandgap of the crystal layer 20 is modulated to the wavelength of the light emitted by the light-emitting module 300 through ultrasonic waves. When the ultrasonic waves emitted by the device layer 10 act on the crystal layer 20 and cause the crystal layer 20 to undergo Bragg diffraction, the wavelength of the light emitted by the light-emitting module 300 is located in the photonic bandgap and cannot pass through the crystal layer 20, thereby achieving light shielding.

[0047] Optionally, the material of the crystal layer 20 includes any one or a combination of lithium tantalate crystals, silicon crystals, lithium niobate crystals, barium titanate crystals, and potassium sodium niobate crystals, without limitation, so that the light shielding module 100 can use crystal layers 20 of different materials according to different light-emitting modules 300 to achieve the function of preventing halo and scattering. Exemplarily, the material of the crystal layer 20 is lithium tantalate.

[0048] Optionally, the device layer 10 and the crystal layer 20 may be bonded by an optically transparent adhesive (OCA adhesive) to ensure that light can pass through and prevent the device layer 10 from being separated from the crystal layer 20 when the device layer 10 vibrates.

[0049] Optionally, the shading module 100 can cover all the display units 201 of the aforementioned display device 1000. The display device 1000 includes multiple shading areas 30 corresponding one to one to the multiple display units 201. The shading module 100 can vibrate the device layer 10 in each shading area 30 and emit ultrasonic waves to the corresponding crystal layer 20 to put the corresponding area of ​​the crystal layer 20 in the second state, so that the corresponding display unit 201 will not have halo and scattering phenomena.

[0050] Optionally, there may be multiple shading modules 100, and the multiple shading modules 100 are arranged in one-to-one correspondence with multiple pixels or multiple sub-pixels. The display device 1000 can vibrate through different areas of the device layer 10 and emit ultrasonic waves to the corresponding crystal layer 20 to put the corresponding area of ​​the crystal layer 20 in the second state, so that the display unit 201 corresponding to certain pixels or certain sub-pixels will not have halo and scattering phenomena.

[0051] For example, please refer to Figure 2 and Figure 3 , Figure 2 and Figure 3 The shading module 100 shown has a first shading area 31, a second shading area 32 and a third shading area 33, and the display module 200 has a first display unit 2011, a second display unit 2012 and a third display unit 2013, and the first display unit 2011, the second display unit 2012 and the third display unit 2013 correspond to the first shading area 31, the second shading area 32 and the third shading area 33 respectively. Among them, when the first display unit 2011 and the third display unit 2013 both display luminescence, and the second display unit 2012 does not display luminescence, the device layer 10 in the first shading area 31 and the third shading area 33 does not vibrate or vibrates at another different frequency so that the crystal layer 20 in the first shading area 31 and the third shading area 33 is in a first state, and the device layer 10 in the second shading area 32 vibrates so that the crystal layer 20 in the second shading area 32 is in a second state, so that the light emitted by the light-emitting module 300 can pass through the first shading area 31 and the third shading area 33 to irradiate the first display unit 2011 and the third display unit 2013, and the light emitted by the light-emitting module 300 cannot irradiate the second display unit 2012 due to the shading effect of the second shading area 32, so that the second display unit 2012 will not have halo and scattering phenomena.

[0052] A shading module 100 is provided between the display module 200 and the light-emitting module 300, wherein the shading module 100 includes a device layer 10 and a crystal layer 20, wherein the crystal layer 20 is stacked on the surface of the device layer 10 facing the display module 200, wherein the device layer 10 is used to vibrate to emit ultrasonic waves to the crystal layer 20, and the crystal layer 20 is used to receive ultrasonic waves and switch from a first state to a second state, wherein when the crystal layer 20 is in the first state, the crystal layer 20 is a light-transmitting component to allow the shading module 100 to transmit light; and when the crystal layer 20 is in the second state, the crystal layer 20 is an opaque component to allow the shading module 100 to shield light, so that when the display module 200 is in a non-display state, the display module 200 will not receive light from the light-emitting module 300, thereby avoiding the generation of halo and scattering phenomena.

[0053] Please refer to Figure 2 and Figure 3The device layer 10 includes a first electrode layer 11, a second electrode layer 12 and a vibration layer 13. The first electrode layer 11 and the second electrode layer 12 are arranged relatively spaced apart, the vibration layer 13 is arranged between the first electrode layer 11 and the second electrode layer 12, and the crystal layer 20 is stacked on the surface of the first electrode layer 11 facing away from the second electrode layer 12. The first electrode layer 11 and the second electrode layer 12 are used to input electrical signals to drive the vibration layer 13 to vibrate.

[0054] Optionally, the vibration layer 13 is a layered structure or a thin film structure formed by a piezoelectric material. The piezoelectric material refers to a crystal material that generates a voltage between the two end faces when subjected to pressure. At the same time, the piezoelectric material can also convert electrical energy into mechanical energy, that is, convert electrical signals into mechanical vibrations, and the vibration layer 13 can vibrate at different frequencies according to electric fields of different intensities to generate ultrasonic waves of different frequencies. The frequency of the ultrasonic wave is consistent with the frequency of the electrical signal, and the ultrasonic wave can act on the crystal layer 20 to cause the crystal layer 20 to generate strain, thereby changing the lattice spacing of the crystal layer 20, so that light within a specific wavelength range cannot pass through the crystal layer 20 to achieve shading.

[0055] Optionally, the material of the vibration layer 13 includes any one or more of barium titanate, lithium niobate, sodium bismuth titanate and quartz, without limitation, so that the shading module 100 can use vibration layers 13 of different materials according to different light-emitting modules 300 to achieve the function of preventing halo and scattering. Exemplarily, the material of the vibration layer 13 is barium titanate. Optionally, both the first electrode layer 11 and the second electrode layer 12 can be transparent conductive materials, or opaque conductive materials with low resistivity, specifically indium tin oxide or indium zinc oxide, without limitation.

[0056] Among them, please refer to Figure 1 The display module 200 includes a plurality of display units 201 arranged in an array, the shading module 100 includes a plurality of shading regions 30 corresponding to the plurality of display units 201, the crystal layer 20 in the shading region 30 corresponding to the luminous display unit 201 is in a first state, and the crystal layer 20 in the shading region 30 corresponding to the non-luminous display unit 201 is in a second state. Each display unit 201 includes a pixel, each pixel includes three sub-pixels, or each display unit 201 includes a plurality of pixels, each pixel includes three sub-pixels, without limitation.

[0057] Also, please refer to Figure 1The display module 200 further includes a source driver chip 202, a gate driver chip 203, a plurality of scan lines 204, and a plurality of data lines 205. The source driver chip 202 is electrically connected to the pixels or sub-pixels in the plurality of display units 201 on each row through the plurality of scan lines 204, and is used to output a scan signal to the pixels or sub-pixels in the plurality of display units 201 to turn on the pixels or sub-pixels in the display units 201. The gate driver chip 203 is electrically connected to the pixels or sub-pixels in the plurality of display units 201 on each column through the plurality of data lines 205, and is used to output a drive signal to the pixels or sub-pixels in the plurality of display units 201 to make the pixels or sub-pixels in the plurality of display units 201 emit light.

[0058] In one embodiment, please refer to Figures 1 to 3 The display device 1000 includes a shading driving chip 400, one of the first electrode layer 11 and the second electrode layer 12 is electrically connected to the common power supply 600, and the other is electrically connected to the shading driving chip 400, and the shading driving chip 400 is used to input an electrical signal to one of the first electrode layer 11 and the second electrode layer 12.

[0059] Taking the case where the first electrode layer 11 is electrically connected to the shading driving chip 400 and the second electrode layer 12 is electrically connected to the common power supply 600 as an example, the first electrode layer 11 includes a plurality of plates corresponding to the plurality of display units 201, each of the plates is insulated from each other, and each of the plates is electrically connected to the shading driving chip 400. The embodiment where the second electrode layer 12 is electrically connected to the shading driving chip 400 and the first electrode layer 11 is electrically connected to the common power supply 600 is similar to the aforementioned embodiment, and can be referred to without further description.

[0060] The shading driving chip 400 outputs different electrical signals to different electrodes of the first electrode layer 11 to make the different electrodes conductive, thereby causing the vibration layer 13 to vibrate in different areas corresponding to different electrodes and emit ultrasonic waves consistent with the frequency of the electrical signal, so that the crystal layer 20 in the shading area 30 corresponding to the luminous display unit 201 is in the first state, and the crystal layer 20 in the shading area 30 corresponding to the non-luminous display unit 201 is in the second state, thereby preventing the light of different display units 201 from affecting each other and causing halo or scattering.

[0061] Optionally, the shading driving chip 400 may be electrically connected to the source driving chip 202 and / or the gate driving chip 203 of the display module 200 , so that whether each shading area 30 is shading corresponds to whether each display unit 201 is emitting light.

[0062] Optionally, the common power supply 600 may be a grounding port arranged outside the shading module 100, the display module 200, the light-emitting module 300 and the shading driving chip 400, and the second electrode layer 12 may also be electrically connected to the light-emitting module 300 through conductive tape and metal wires, so that the second electrode layer 12 is grounded through the grounding port on the light-emitting module 300, that is, the light-emitting module 300 and the shading module 100 share the same grounding port without limitation.

[0063] The shading driver chip 400 is disposed outside the device layer 10. Regarding the connection method between the shading driver chip 400 and the first electrode layer 11, in one embodiment, the shading driver chip 400 is electrically connected to the first electrode layer 11 by setting a metal wiring. Optionally, the multiple output ends of the shading driver chip 400 can be electrically connected to the multiple plates on the first electrode layer 11 one by one through multiple wires. For example, in the stacking direction of the device layer 10, any one of the adjacent and connected first electrode layer 11 can be provided with a wiring hole to allow multiple wires to pass through.

[0064] In another embodiment, the device layer 10 further includes a first insulating layer 15, which is disposed on the surface of the first electrode layer 11 facing the second electrode layer 12, and a metal layer (not shown) is disposed in the first insulating layer 15, and metal traces are disposed in the metal layer and are electrically connected to the multiple plates of the first electrode layer 11 one by one, and the metal traces are disposed in the metal layer and are also electrically connected to the shading driving chip 400. Optionally, the metal layer can also be disposed in any layer structure adjacent to the first electrode layer 11 without limitation.

[0065] In another embodiment, please refer to Figures 2 to 4 The display device 1000 further includes a plurality of non-circuit units 500 corresponding to the plurality of display units 201 one by one, and the plurality of non-circuit units 500 are electrically connected to the device layers 10 in the plurality of light-shielding regions 30 and the plurality of display units 201, respectively. When the display unit 201 emits light, the display unit 201 outputs a first signal to the non-circuit unit 500, and the non-circuit unit 500 outputs a second signal to the device layer 10 in the corresponding light-shielding region 30, so that the crystal layer 20 in the corresponding light-shielding region 30 is in a first state; when the display unit 201 does not emit light, the display unit 201 outputs a second signal to the non-circuit unit 500, and the non-circuit unit 500 outputs a first signal to the device layer 10 in the corresponding light-shielding region 30, so that the crystal layer 20 in the corresponding light-shielding region 30 is in a second state, and the first signal and the second signal have the same amplitude and opposite phase, so as to prevent the light from different display units 201 from affecting each other and causing halo or scattering.

[0066] The non-circuit unit 500 is used to invert the input signal and then output it. That is, when the signal input to the non-circuit unit 500 is a high level, the signal output by the non-circuit unit 500 is a low level with the same amplitude but opposite phase, and when the signal input to the non-circuit unit 500 is a low level, the signal output by the non-circuit unit 500 is a high level with the same amplitude but opposite phase.

[0067] Each non-circuit unit 500 is electrically connected to the first electrode layer 11 or the second electrode layer 12 of the device layer 10 in each shading area 30, and is also electrically connected to the scan line 204 or the data line 205 in each display unit 201. When the scan line 204 and the data line 205 in the display unit 201 output a scan signal or a drive signal to multiple pixels or multiple sub-pixels in the display unit 201, the corresponding non-circuit unit 500 can output the first signal or the second signal to the device layer 10 according to the scan signal or the drive signal, so that the crystal layer 20 in the corresponding shading area 30 is in the first state or the second state, thereby preventing the light from different display units 201 from affecting each other and causing halo or scattering.

[0068] Optionally, when each non-circuit unit 500 is electrically connected to the data line 205 in each display unit 201, the first signal is a driving signal, and when each non-circuit unit 500 is electrically connected to the scan line 204 in each display unit 201, the first signal is a scan signal. Optionally, the first signal is a high level and the second signal is a low level.

[0069] Taking the one-to-one electrical connection between multiple non-circuit units 500 and multiple plates of the first electrode layer 11 as an example, the connection method between the multiple non-circuit units 500 and the first electrode layer 11 is similar to the connection method between the shading driving chip 400 and the first electrode layer 11, which can be referred to and will not be repeated.

[0070] Optionally, the display device 1000 may be provided with a shading driving chip 400 and multiple non-circuit units 500 to collaboratively control the shading module 100, so that when one of the shading driving chip 400 and the multiple non-circuit units 500 is damaged or fails, the other can still continue to control the shading module 100.

[0071] Please refer to Figure 2 and Figure 3 The device layer 10 also includes a support layer 14, which is arranged between the first electrode layer 11 and the second electrode layer 12 and connected to the vibration layer 13. The support layer 14 has at least one cavity 141, and the gas in the cavity 141 is used to vibrate under the drive of the vibration layer 13.

[0072] Exemplarily, the support layer 14 is connected to the surface of the vibration layer 13 facing away from the first electrode layer 11. Optionally, the support layer 14 may also be connected to the surface of the vibration layer 13 facing the first electrode layer 11, without limitation.

[0073] Optionally, the number of the cavities 141 may be one or more, and the multiple cavities 141 are spaced apart from each other by multiple partitions 142. Optionally, each of the aforementioned light shielding regions 30 corresponds to one cavity 141 or multiple cavities 141, without limitation.

[0074] Optionally, the support layer 14 can be made of a material with high light transmittance, good wear and friction resistance, and stable chemical properties, specifically a layered structure or a thin film structure formed by materials such as polyethylene terephthalate (PET), non-crystallized polyethylene terephthalate (APET), and polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG), without limitation.

[0075] Optionally, the gas in the cavity 141 may be air, nitrogen, oxygen, carbon dioxide, argon, etc., without limitation. When the vibration layer 13 vibrates, the support layer 14 vibrates synchronously driven by the vibration layer 13, and the gas in the cavity 141 of the support layer 14 also vibrates synchronously with the vibration layer 13. The gas in the cavity 141 vibrates and emits ultrasonic waves to the crystal layer 20, so as to enhance the influence of the device layer 10 on the crystal layer 20 and improve the light shielding effect.

[0076] Please refer to Figure 2 and Figure 3 The device layer 10 further includes a first insulating layer 15 and a second insulating layer 16 . The first insulating layer 15 is disposed on a surface of the first electrode layer 11 facing the second electrode layer 12 , and the second insulating layer 16 is disposed on a surface of the second electrode layer 12 facing the first electrode layer 11 .

[0077] Exemplarily, the first insulating layer 15 is disposed between the first electrode layer 11 and the vibration layer 13 , the support layer 14 is connected to the surface of the vibration layer 13 facing away from the first insulating layer 15 , and the second insulating layer 16 is disposed between the second electrode layer 12 and the support layer 14 .

[0078] Optionally, the first insulating layer 15 and the second insulating layer 16 may be made of inorganic materials such as aluminum oxide, silicon nitride, silicon oxide, and silicon oxynitride, without limitation. Optionally, the first insulating layer 15 and the second insulating layer 16 are both layered structures or thin film structures formed of the above materials.

[0079] Optionally, the shading module 100 further includes a substrate layer 40, and the device layer 10 and the crystal layer 20 are sequentially stacked on the substrate layer 40. Optionally, the substrate layer 40 may be composed of materials such as glass and quartz and other structures (e.g., a buffer layer) on the substrate layer 40. Exemplarily, the substrate layer 40 is made of a glass material with a low thermal expansion coefficient, low density, and high chemical stability to ensure that the deformation and warping of the substrate layer 40 during processing and use are smaller, and at the same time, it is not easy to cause appearance changes due to material decomposition when subjected to corrosion by various acidic and alkaline chemicals or gases.

[0080] Since the vibration layer 13 is a piezoelectric material, when the vibration layer 13 is electrically connected to the first electrode layer 11 or the second electrode layer 12, the vibration frequency of the vibration layer 13 will be affected by the voltage on the first electrode layer 11 or the second electrode layer 12, resulting in shading failure. At the same time, when the support layer 14 is made of conductive material, since the support layer 14 is connected to the vibration layer 13, the vibration frequency of the vibration layer 13 will also be affected by the voltage on the first electrode layer 11 or the second electrode layer 12. By setting the first insulating layer 15 and the second insulating layer 16, the first insulating layer 15 is set on the surface of the first electrode layer 11 facing the second electrode layer 12, and the second insulating layer 16 is set on the surface of the second electrode layer 12 facing the first electrode layer 11, so that there will be no short circuit between the first electrode layer 11, the second electrode layer 12, the vibration layer 13 and the support layer 14.

[0081] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0082] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A shading module, characterized in that: Used in a display device, the display device further comprising a display module and a light-emitting module, the light-emitting module, the light-shielding module and the display module are stacked in sequence, the light-emitting module is used to emit light to the light-shielding module, and the display module is used to receive the light for display; The light shielding module includes a device layer and a crystal layer, wherein the crystal layer is stacked on a surface of the device layer facing the display module, the device layer is used to vibrate to transmit ultrasonic waves to the crystal layer, and the crystal layer is used to receive the ultrasonic waves and switch from a first state to a second state; When the crystal layer is in the first state, the crystal layer is a light-transmitting component so that the light-shielding module can pass the light; when the crystal layer is in the second state, the crystal layer is an opaque component so that the light-shielding module can block the light.

2. The shading module according to claim 1, characterized in that: The device layer includes a first electrode layer, a second electrode layer and a vibration layer. The first electrode layer and the second electrode layer are arranged relatively spaced apart, the vibration layer is arranged between the first electrode layer and the second electrode layer, the crystal layer is stacked on the surface of the first electrode layer facing away from the second electrode layer, and the first electrode layer and the second electrode layer are used to input electrical signals to drive the vibration layer to vibrate.

3. The shading module according to claim 2, characterized in that: The material of the vibration layer includes any one or a combination of multiple materials selected from the group consisting of barium titanate, lithium niobate, sodium bismuth titanate and quartz.

4. The shading module according to claim 2, characterized in that: The material of the crystal layer includes any one or a combination of multiple of lithium tantalate crystals, silicon crystals, lithium niobate crystals, barium titanate crystals and potassium sodium niobate crystals.

5. The shading module according to claim 2, characterized in that: The device layer also includes a support layer, which is arranged between the first electrode layer and the second electrode layer and connected to the vibration layer. The support layer has at least one cavity, and the gas in the cavity is used to vibrate under the drive of the vibration layer.

6. The shading module according to claim 5, characterized in that: The device layer further includes a first insulating layer and a second insulating layer. The first insulating layer is disposed on a surface of the first electrode layer facing the second electrode layer, and the second insulating layer is disposed on a surface of the second electrode layer facing the first electrode layer.

7. The shading module according to any one of claims 1 to 6, characterized in that: The display module includes a plurality of display units arranged in an array, the shading module includes a plurality of shading regions corresponding one by one to the plurality of display units, the crystal layer in the shading region corresponding to the luminous display unit is in the first state, and the crystal layer in the shading region corresponding to the non-luminous display unit is in the second state.

8. A display device, characterized in that: It comprises a display module, a light-emitting module and a shading module as described in any one of claims 1 to 7, wherein the light-emitting module, the shading module and the display module are stacked in sequence, the light-emitting module is used to emit light to the shading module, and the display module is used to receive the light for display.

9. The display device according to claim 8, characterized in that: The display module includes a plurality of display units arranged in an array, the shading module includes a plurality of shading regions corresponding to the plurality of display units one by one, the crystal layer in the shading region corresponding to the luminous display unit is in the first state, and the crystal layer in the shading region corresponding to the non-luminous display unit is in the second state; The display device further comprises a plurality of non-circuit units corresponding to the plurality of display units one by one, and the plurality of non-circuit units are respectively electrically connected to the device layers in the plurality of light-shielding regions and the plurality of display units; When the display unit emits light, the display unit outputs a first signal to the non-circuit unit, and the non-circuit unit outputs a second signal to the device layer in the corresponding shading area, so that the crystal layer in the corresponding shading area is in the first state; when the display unit does not emit light, the display unit outputs the second signal to the non-circuit unit, and the non-circuit unit outputs the first signal to the device layer in the corresponding shading area, so that the crystal layer in the corresponding shading area is in the second state, and the first signal and the second signal have the same amplitude and opposite phase.

10. An electronic device, characterized in that: Comprising the display device as claimed in claim 8 or 9.

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