Liquid crystal display modules and their control methods and devices, electronic equipment

Abstract

A liquid crystal display module and its control method, control device, and electronic device are disclosed. The liquid crystal display module includes: a backlight assembly; a liquid crystal panel located on the light-emitting side of the backlight assembly; and a sensing assembly located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing assembly facing the backlight assembly. The sensing assembly can be used to directly obtain the light intensity distribution information of the light generated by the backlight assembly, thereby accelerating the system calibration speed and improving the system calibration accuracy during image display, thus achieving the purpose of improving display effect and increasing display speed.

Description

Technical Field

[0001] This invention relates to the field of display, and in particular to a liquid crystal display module and its control method, control device, and electronic equipment. Background Technology

[0002] Liquid crystal displays (LCDs) are widely used in various fields due to their advantages such as small size, light weight, and low radiation. An LCD mainly consists of a backlight assembly and a liquid crystal panel. Since the liquid crystal panel itself does not emit light, the backlight assembly is used to provide the light required for the LCD to display images.

[0003] As the display quality of LCDs continues to improve to meet user demands, backlight components are no longer simply used to provide a light source. By controlling the backlight component through local dimming technology, the brightness of the backlight component can be adjusted according to different display conditions and power consumption, thereby effectively increasing the performance of the display device. Specifically, in LCDs using local dimming technology, the backlight component is divided into multiple light source structures, each of which can independently adjust the intensity of the light it produces.

[0004] However, existing LCD monitors using local adjustable backlight technology often suffer from unsatisfactory display effects and display speeds when displaying images. Summary of the Invention

[0005] The problem solved by this invention is to provide a liquid crystal display module and its control method, control device, and electronic equipment to improve display effect and increase display speed.

[0006] To address the aforementioned problems, the present invention provides a liquid crystal display module, comprising: a backlight assembly; a liquid crystal panel located on the side of the backlight assembly from which light is emitted; and a sensing assembly located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing assembly facing the backlight assembly.

[0007] Optionally, the sensing component includes a phototransistor, the phototransistor including a first electrode, a second electrode, and a control electrode, the control electrode being adapted to control the first electrode and the second electrode to be turned on and off; at least the electrodes of the first electrode and the second electrode are made of transparent conductors.

[0008] Optionally, the sensing component further includes an interconnect structure, wherein the interconnect structure is made of a transparent conductor.

[0009] Optionally, the transparent conductor includes at least one of transparent conductive oxide, conductive transparent nitride, and transparent conductive graphene.

[0010] Optionally, it may also include: a control device adapted to control the liquid crystal panel to achieve image display.

[0011] Optionally, the control device is also adapted to obtain light intensity distribution information of the light generated by the backlight component through the sensing component; the control device is adapted to control the liquid crystal panel according to the light intensity distribution information.

[0012] Optionally, the control device pre-stores the light transmission information of the sensing component; the control device is adapted to control the liquid crystal panel according to the light transmission information.

[0013] Optionally, it further includes: a contact surface located on the side of the sensing component facing away from the backlight component; incident light propagates along the direction of the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; the sensing component collects the signal light to perform imaging.

[0014] Optionally, the contact surface is the surface of the liquid crystal panel facing away from the backlight assembly.

[0015] Optionally, the sensing component includes: an imaging light source adapted to generate the incident light; when the sensing component acquires the signal light, the control device is adapted to turn off the backlight component and turn on the imaging light source.

[0016] Optionally, the backlight assembly includes multiple light source structures; when the sensing assembly collects the signal light, the control device shuts down the light source structure corresponding to the imaged object on the contact surface; the unshutted light source structure generates the incident light.

[0017] Optionally, it also includes: a reflective surface, which is located between the photosensitive surface of the sensing component and the backlight component; the signal light is reflected again on the reflective surface and then collected by the sensing component.

[0018] Optionally, the reflective surface is the surface of the sensing component facing the backlight component.

[0019] Optionally, it further includes: an air layer located between the backlight assembly and the sensing assembly; and a scattering layer located between the sensing assembly and the liquid crystal panel.

[0020] Furthermore, the present invention also provides a control method for a liquid crystal display module, the liquid crystal display module comprising: a backlight assembly; a liquid crystal panel located on the side of the backlight assembly from which light is emitted; and a sensing assembly located between the backlight assembly and the liquid crystal panel, the photosensitive surface of the sensing assembly facing the backlight assembly. The control method comprises: obtaining light intensity distribution information of the light generated by the backlight assembly through the sensing assembly; and controlling the liquid crystal panel according to the light intensity distribution information to optimize image display.

[0021] Optionally, before obtaining the light intensity distribution information, the method further includes: pre-storing the light transmission information of the sensing component; in the step of controlling the liquid crystal panel to optimize image display, the liquid crystal panel is controlled to optimize image display based on the light intensity distribution information and the light transmission information.

[0022] Optionally, the liquid crystal display module further includes: a contact surface located on the side of the sensing component facing away from the backlight; incident light propagates along the direction from the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; the control method further includes: acquiring the signal light through the sensing component to perform imaging.

[0023] Optionally, the sensing component includes: an imaging light source adapted to generate the incident light; in the step of acquiring the signal light through the sensing component for imaging, the backlight component is turned off.

[0024] Optionally, the backlight assembly includes multiple light source structures; in the step of acquiring the signal light through the sensing component for imaging, the light source structure corresponding to the imaged object on the contact surface is turned off; the light source structure that is not turned off generates the incident light.

[0025] Accordingly, the present invention also provides a control device for a liquid crystal display module, wherein the liquid crystal display module includes: a backlight assembly; a liquid crystal panel located on the side of the backlight assembly from which light is emitted; a sensing assembly located between the backlight assembly and the liquid crystal panel, the photosensitive surface of the sensing assembly facing the backlight assembly; the control device includes a display module, the display module being adapted to obtain light intensity distribution information of the light generated by the backlight assembly through the sensing assembly; the display module is also adapted to control the liquid crystal panel in conjunction with the light intensity distribution information to achieve image display.

[0026] Optionally, the control device pre-stores the light transmission information of the sensing component; the display module is adapted to control the liquid crystal panel to optimize image display based on the light intensity distribution information and the light transmission information.

[0027] Optionally, the liquid crystal display module further includes: a contact surface located on the side of the sensing component facing away from the backlight; incident light propagates along the direction from the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; the control device further includes: an imaging module, which collects the signal light through the sensing component to perform imaging.

[0028] Optionally, the sensing component includes: an imaging light source adapted to generate the incident light; when the signal light is acquired by the sensing component for imaging, the imaging module is also adapted to turn off the backlight component.

[0029] Optionally, the backlight assembly includes multiple light source structures; when the signal light is collected by the sensing component for imaging, the imaging module is also adapted to shut down the light source structure corresponding to the imaged object on the contact surface; the unshutted light source structure generates the incident light.

[0030] In addition, the present invention also provides an electronic device, including: the liquid crystal display module of the present invention.

[0031] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0032] In this invention, the liquid crystal display module includes a sensing component located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing component facing the backlight assembly. The sensing component can directly obtain the light intensity distribution information of the light generated by the backlight assembly, thereby accelerating the system calibration speed and improving the accuracy of system calibration during image display, ultimately improving the display effect and increasing the display speed.

[0033] In an optional embodiment of the present invention, the material of the electrodes or interconnection structure of the sensing component can be set as a transparent conductor to improve the light transmittance of the sensing component, thereby reducing the influence of the sensing component setting on the light transmission of the backlight component, and thus improving the display effect.

[0034] In an optional embodiment of the present invention, the liquid crystal display module further includes a contact surface located on the side of the sensing component facing away from the backlight component. Incident light propagating along the direction from the sensing component toward the liquid crystal panel is reflected on the contact surface to form signal light carrying imaging information. The sensing component can collect the signal light for imaging. The sensing component can also image a device to be imaged that is in contact with the contact surface, thereby expanding the functionality of the liquid crystal display module.

[0035] In an optional embodiment of the present invention, when the backlight assembly includes multiple light source structures, when the sensing assembly collects signal light for imaging, the control device shuts down the light source structure corresponding to the imaged object; the unshutted light source structure generates incident light for imaging. Employing locally adjustable backlight technology in the liquid crystal display module allows the use of unshutted light source structures to generate incident light, eliminating the need for an imaging light source in the sensing assembly and simplifying the structure. Attached Figure Description

[0036] Figure 1 This is a cross-sectional structural diagram of a liquid crystal display module with uniform backlighting.

[0037] Figure 2 This is a cross-sectional structural diagram of a liquid crystal display module employing locally adjustable backlight technology.

[0038] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the liquid crystal display module of the present invention;

[0039] Figure 4 yes Figure 3 A schematic cross-sectional view of the photosensitive transistor in the liquid crystal display module embodiment shown;

[0040] Figure 5 yes Figure 3 The diagram shows the optical path structure for imaging the object to be imaged on the contact surface using a liquid crystal display module embodiment.

[0041] Figure 6 yes Figure 3 The image shown is a result of the liquid crystal display module embodiment imaging the image of the object to be imaged 153.

[0042] Figure 7 This is a cross-sectional structural schematic diagram of another embodiment of the liquid crystal display module of the present invention;

[0043] Figure 8 This is a functional block diagram of an embodiment of the control device for the liquid crystal display module of the present invention. Detailed Implementation

[0044] As is known from the background technology, existing liquid crystal displays (LCDs) using locally adjustable backlight technology suffer from unsatisfactory display effects and display speeds. This paper analyzes the reasons for these unsatisfactory display effects and speeds in conjunction with the image display process of an LCD:

[0045] When an LCD displays an image, the displayed image can be represented as:

[0046]

[0047] in, This indicates the image being displayed. C represents the modulation information of the LCD panel, and C represents the light intensity distribution information of the light generated by the backlight assembly.

[0048] Reference Figure 1 and Figure 2 ,in Figure 1 This is a cross-sectional structural diagram of a liquid crystal display module with uniform backlighting. Figure 2 This is a cross-sectional structural diagram of a liquid crystal display module that uses locally adjustable backlight technology.

[0049] like Figure 1 As shown, for a liquid crystal display, ideally, the light produced by the backlight assembly 11 is uniformly distributed, therefore C is a fixed value; however, as Figure 2 As shown, in actual conditions, the light emitted by the backlight assembly 21 is uniformly distributed. The light intensity distribution information of the light emitted by the backlight assembly 21 is represented as follows: Without locally adjustable backlighting, the displayed image will deviate from the original image.

[0050]

[0051] in, This indicates a display image obtained without using local adjustable backlight technology; This represents the modulation information of the liquid crystal panel 12 under ideal conditions with uniform backlighting; This represents the light intensity distribution information of the light generated by the backlight assembly 21 under actual conditions. To ensure that the displayed image matches the ideal image, local adjustable backlight technology is used to change the modulation information of the liquid crystal panel 22, so that:

[0052]

[0053] Right now

[0054]

[0055] in, This indicates the modulation information of the liquid crystal panel 22 after adopting local adjustable backlight technology.

[0056] In addition, it should be noted that, The coordinate system is ; , The coordinate system is ; The coordinate system is To ensure clarity, in practical applications, the relationship between different coordinate systems can be determined through calibration to achieve conversion. Generally, the resolution of the backlight assembly 11 / 21 is much smaller than that of the LCD panel 12 / 22. Therefore, different algorithm combinations can be selected to meet the performance requirements of real-world applications. However, in LCDs using locally adjustable backlight technology, time is required for system calibration to accurately determine the modulation information of the LCD panel 12 / 22, and thus the control information of the LCD panel 12 / 22. Furthermore, determining the light intensity value in adjacent areas of different light source structures within the backlight assembly 21 is challenging. Since the light intensity value in adjacent areas is the superposition of at least two areas and is related to the image information of the displayed image itself, a certain high-order nonlinear coupling is formed. In some cases, this high-order nonlinear coupling can trigger a chain reaction, resulting in uncertainty in the solution of that area, thus causing image display distortion.

[0057] For example, To represent the coupling between two adjacent regions, a chain reaction can be represented as: Ultimately, it returned to the origin, thus making the solution difficult and calibration challenging.

[0058] It is evident that the need for and difficulty in system calibration is the reason why existing LCD displays have unsatisfactory display effects and display speeds.

[0059] To solve the aforementioned technical problem, the present invention provides a liquid crystal display module, comprising:

[0060] A backlight assembly; a liquid crystal panel located on the side of the backlight assembly from which light is emitted; and a sensing assembly located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing assembly facing the backlight assembly.

[0061] In this invention, the liquid crystal display module includes a sensing component located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing component facing the backlight assembly. The sensing component can directly obtain the light intensity distribution information of the light generated by the backlight assembly, thereby accelerating the system calibration speed and improving the accuracy of system calibration during image display, ultimately improving the display effect and increasing the display speed.

[0062] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0063] refer to Figure 3 The diagram shows a cross-sectional structural schematic of an embodiment of the liquid crystal display module of the present invention.

[0064] The liquid crystal display module includes: a backlight assembly 110; a liquid crystal panel 120 located on the side of the backlight assembly 110 from which light is emitted; and a sensing assembly 130 located between the backlight assembly 110 and the liquid crystal panel 120, with the photosensitive surface 131 of the sensing assembly 130 facing the backlight assembly 110.

[0065] The sensing component 130 facing the backlight component 110 can be used to directly obtain the light intensity distribution information of the light generated by the backlight component 110, thereby enabling the backlight distribution to be directly obtained during image display, thus accelerating the system calibration speed, improving the system calibration accuracy, and helping to improve the display effect and increase the display speed.

[0066] The backlight assembly 110 generates the light required for the liquid crystal display module to display images, i.e., it generates backlight. The liquid crystal panel 120 modulates the backlight to optimize image display.

[0067] In some embodiments of the present invention, the backlight assembly 110 includes a plurality of light source structures 111. The backlight assembly 110 is a backlight assembly controlled using local dimming technology. Therefore, the plurality of light source structures 111 can be independently controlled and adjusted.

[0068] The liquid crystal panel 120 includes: an array substrate (not shown) and a color filter substrate (not shown) spaced apart, and a liquid crystal layer (not shown) filled between the array substrate and the color filter substrate. Specifically, the liquid crystal panel 120 can be a liquid crystal display panel based on amorphous silicon thin film transistor (a-Si:H TFT), a liquid crystal display panel based on low-temperature polysilicon thin film transistor (LTP-Si TFT), or a liquid crystal display panel based on indium gallium zinc oxide thin film transistor (IGZOTFT).

[0069] The photosensitive surface 131 of the sensing component 130 faces the backlight component 110 to collect light propagating along the backlight component 110 toward the liquid crystal panel 120.

[0070] Since the sensing component 130 is located between the backlight component 110 and the liquid crystal panel 120, the light generated by the backlight component 110 must pass through the sensing component 130 before it can be used for image display. Therefore, in order to improve the light transmittance and reduce the impact of the sensing component 130's placement on image display, in some embodiments of the present invention, the sensing component 130 includes: a photosensitive transistor (such as...). Figure 4 As shown, the photosensitive transistor includes a first electrode 132 and a second electrode 133, as well as a control electrode 134 that controls the conduction and cutoff of the first electrode 132 and the second electrode 133; at least the electrodes of the first electrode 132 and the second electrode 133 are made of transparent conductors.

[0071] Specifically, the sensing component 130 includes a plurality of photosensitive pixels, each photosensitive pixel including a photosensitive transistor; the first electrode 132 of the photosensitive transistor is the source electrode, the second electrode 133 of the photosensitive pixel is the drain electrode, and the control electrode 134 of the photosensitive transistor is the gate electrode. Therefore, in the photosensitive transistor, at least the source and drain electrodes are made of transparent conductors.

[0072] like Figure 3 and Figure 4 As shown, whether the light propagates along the direction from the backlight assembly 110 to the liquid crystal assembly 120 or along the direction from the liquid crystal assembly 120 to the backlight assembly 110, it needs to be transmitted through the backlight assembly 110. Therefore, when the materials of the electrodes of the first electrode 132 and the second electrode 133 are set as transparent conductors, the light transmittance of the sensing assembly 130 can be effectively improved, and the influence of the sensing assembly 130 on the transmitted light can be reduced.

[0073] It should be noted that, as Figure 4 As shown, since the position of the control electrode 134 of the photosensitive transistor corresponds to the light-absorbing semiconductor layer 135, and the photosensitive surface 131 of the sensing component 130 faces the backlight component 110, the light-absorbing semiconductor layer 135 is located between the control electrode 134 and the backlight component 110 in the direction facing the backlight component 110. When the material of the control electrode 134 is set to a non-transparent conductor, the control electrode 134 can also block light propagating along the direction from the liquid crystal component 120 to the backlight component 110.

[0074] Furthermore, in some embodiments of the present invention, the sensing component further includes an interconnect structure (not shown in the figure), wherein the interconnect structure is made of a transparent conductor. The interconnect structure is used to realize the connection between electronic components in the sensing component 130 and between the sensing component 130 and external circuits.

[0075] It should be noted that the transparent conductor includes at least one of transparent conductive oxides, conductive transparent nitrides, and transparent conductive graphene. Specifically, the transparent conductive oxide can be one or more of indium tin oxide (ITO), zinc tin oxide (IZO), aluminum zinc oxide (AZO), fluorine-doped tin oxide (FTO), gallium-doped tin oxide (GTO), etc.; the conductive transparent nitride includes one or more of titanium nitride, titanium oxynitride, tantalum nitride, and tantalum oxynitride, etc. Furthermore, the transparent conductor can also be other transparent metals or alloys.

[0076] Continue to refer to Figure 3 In some embodiments of the present invention, the liquid crystal display module further includes a control device 140, which is adapted to control the liquid crystal panel 120 to achieve image display.

[0077] The control device 140 is connected to the liquid crystal panel 120 and is adapted to control the liquid crystal panel 120 to modulate the light generated by the backlight assembly 110 to achieve image display. Specifically, the target image displayed by the liquid crystal display module can be represented as: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates information about the light emitted by the backlight assembly 110 under ideal conditions.

[0078] In some embodiments of the present invention, the control device 140 is also adapted to obtain light intensity distribution information of the light generated by the backlight assembly 110 under actual conditions through the sensing component 130. The control device 140 is adapted to control the liquid crystal panel 120 in conjunction with the light intensity distribution information, that is, the target image displayed by the liquid crystal display module can be represented as: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120 after adopting locally adjustable backlight technology. This indicates that the light intensity distribution information of the light generated by the backlight component 110 is obtained through the sensing component 130.

[0079] The backlight assembly 110 includes multiple light source structures 111. The backlight assembly 110 is a backlight assembly controlled using local dimming technology, and the light intensity distribution information of the light generated by the backlight assembly 110 is directly obtained through the sensing component 130. This approach to image display can accelerate system calibration and improve its accuracy during the image display process, thereby improving display quality and increasing display speed.

[0080] It should be noted that, as Figure 3 As shown, the sensing component 130 is located between the backlight component 110 and the liquid crystal panel 120. The light generated by the backlight component 110 is also modulated by the sensing component 130 during its acquisition process. Therefore, the liquid crystal panel 120 actually further modulates the light transmitted through the sensing component 130. In other words, the light received by the liquid crystal panel 120 is essentially the light intensity distribution information of the light generated by the backlight component 110. The result of the modulation by the sensing component 130, superimposed on the target image displayed by the liquid crystal display module, is represented as follows: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0081] However, the modulation information of the transmitted light by the sensing component 130 is related to the overall light transmission information of the sensing component 130 and is definite. Therefore, in some embodiments of the present invention, the control device 140 pre-stores the light transmission information of the sensing component 130; the control device 140 is suitable for controlling the liquid crystal panel 120 in conjunction with the light transmission information.

[0082] It should be noted that the light transmission information of the sensing component 130 can be obtained through testing, thereby forming the modulation information of the sensing component 130 on the transmitted light. The control device 140 can make the modulation information of the liquid crystal panel 120 into To eliminate the influence of the sensing component 130 on the image display, that is, to ensure that the final displayed target image is:

[0083] in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This represents the modulation information of the liquid crystal panel 120 after taking into account the influence of the sensing component 130 on the image display. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0084] Continue to refer to Figure 3 In some embodiments of the present invention, the liquid crystal display module further includes a contact surface 150, the contact surface 150 being located on the side of the sensing component 130 facing away from the backlight component 110. Furthermore, referring to reference... Figure 5 Incident light 151 propagates along the direction of the sensing component 130 toward the liquid crystal panel 120 and is reflected on the contact surface 150 to form signal light 152 carrying imaging information; the sensing component 130 collects the signal light 152 to perform imaging.

[0085] As can be seen, in addition to accelerating system calibration and improving calibration accuracy during image display, the sensing component 130 can also image the image to be imaged 153 that is in contact with the contact surface 150, thereby expanding the function of the liquid crystal display module.

[0086] The contact surface 150 is used to contact the image target 153 to input imaging information. Specifically, in some embodiments of the present invention, the contact surface 150 is used to contact a fingerprint to input fingerprint information. For example... Figure 5 As shown, in this embodiment, the contact surface 150 is the surface of the liquid crystal panel 120 facing away from the backlight assembly 110.

[0087] In other embodiments of the present invention, the liquid crystal display module further includes a reflective surface 160, which is located between the photosensitive surface 131 of the sensing component 130 and the backlight component 110, to reflect the signal light 152 so that the signal light 152 propagates towards the photosensitive surface 131 of the sensing component 130, thereby realizing optical signal acquisition. Specifically, the reflective surface 160 is the surface of the sensing component 130 facing the backlight component 110.

[0088] The contact surface 150 and the reflecting surface 160 form a waveguide, and the signal light 152 formed by the incident light 151 after being reflected on the contact surface 150 propagates between the contact surface 150 and the reflecting surface 160 in waveguide mode.

[0089] In other embodiments of the present invention, the contact surface and the reflective surface may also be other surfaces of the liquid crystal display module, as long as the contact surface and the reflective surface can maintain optical smoothness to form a waveguide.

[0090] It should be noted that, as Figure 3As shown, in some embodiments of the present invention, the liquid crystal display module further includes an air layer 162, which is located 130 between the backlight assembly 110 and the sensing assembly. When the air layer 162 is present, light propagating along the direction from the backlight assembly 110 to the liquid crystal panel 120 cannot couple into the waveguide formed by the contact surface 150 and the reflective surface 160, that is, there is no waveguide mode light in the liquid crystal display module, so imaging is not possible.

[0091] Therefore, the liquid crystal display module further includes a scattering layer 170, which is located between the sensing component 130 and the liquid crystal panel 120. The scattering layer 170 is used to couple incident light into the waveguide formed by the contact surface 150 and the reflecting surface 160 for imaging.

[0092] In some embodiments of the present invention, the scattering layer 170 may be at least one of a random scattering layer or a microstructure layer. Specifically, when the scattering layer 170 is a transmissive random scattering layer, the surface of the scattering layer facing away from the display component is a rough surface; and / or, the refractive index distribution of the scattering layer material is non-uniform. When the scattering layer 170 is a microstructure layer, periodic or non-periodic microstructures are provided on the surface of the microstructure layer facing away from the display component; light transmitted through the microstructure layer is at least partially refracted at the microstructures.

[0093] Continue to refer to Figure 5 The photosensitive surface 131 of the sensing component 130 faces the backlight component 110, and the backlight component 110, which includes multiple light source structures 111, is a backlight component controlled using local dimming technology; therefore, in this embodiment, when the sensing component 130 collects the signal light 152, the control device 140 shuts down the light source structure corresponding to the image target 153 on the contact surface 150 (such as...). Figure 5 The light source structure corresponding to region 154 in the middle); the light source structure that is not turned off (such as... Figure 5 The incident light is generated by the light source structure corresponding to region 155 in the middle.

[0094] The control device 140 is connected to the backlight assembly 110. When the contact surface 150 contacts the image target 153 to perform imaging, the control device 140 shuts down the light source structure corresponding to the image target 153.

[0095] In some embodiments of the present invention, a fixed area may be provided on the contact surface 150 for the image-to-be-imaged object 153 to contact, and the control device 140 shuts down the light source structure at the position corresponding to the fixed area, that is, the light source structure in the projection area of ​​the fixed area on the backlight assembly 110.

[0096] In other embodiments of the present invention, the control device may also detect the position of the imaged object in contact with the contact surface through the touch component, and turn off the light source component corresponding to the position of the imaged object, that is, the projection of the imaged object on the backlight component 110 is located within the coverage area of ​​the turned-off light source component.

[0097] On the other hand, the light generated by the unclosed light source component is coupled into the waveguide formed by the contact surface 150 and the reflective surface 160 after being transmitted through the sensing component 130, so as to form a signal light 152 carrying imaging information. The signal light 152 is collected by the imaging component 130, thereby realizing imaging. Figure 6 That is, it shows Figure 3 The image shown is the result of the liquid crystal display module embodiment imaging the image of the image target 153.

[0098] Reference Figure 7 The diagram shows a cross-sectional view of another embodiment of the liquid crystal display module of the present invention.

[0099] The similarities between this embodiment and the previous embodiments will not be repeated here. The difference between this embodiment and the previous embodiments is that, in this embodiment, the sensing component 230 includes: an imaging light source 236, which is adapted to generate the incident light 251; when the sensing component 230 acquires the signal light 252, the control device 240 is adapted to turn off the backlight component 210 and turn on the imaging light source 236.

[0100] The imaging light source 236 is used to generate the incident light 251; when imaging the object to be imaged 253, the control device 240 turns off the backlight assembly 210 to prevent backlight interference with imaging; and turns on the imaging light source 236 to achieve imaging.

[0101] It should be noted that in this embodiment, the backlight assembly 210 and the sensing assembly 230 are directly bonded together in the liquid crystal display module, meaning that the liquid crystal display module does not include an air layer. Therefore, the light generated by the imaging light source 236 can be directly coupled into the waveguide formed by the contact surface 250 and the reflective surface 260 to achieve imaging. Thus, in this embodiment, the liquid crystal display module does not include a scattering layer.

[0102] Accordingly, the present invention also provides an electronic device. The electronic device includes the liquid crystal display module of the present invention.

[0103] Specifically, the liquid crystal display module is the liquid crystal display module of the present invention. For specific technical solutions, please refer to the aforementioned embodiments of the liquid crystal display module. The present invention will not be repeated here.

[0104] In addition, the present invention also provides a control method for a liquid crystal display module.

[0105] It should be noted that the reference Figure 3 The diagram shows a cross-sectional view of the liquid crystal display module used in the embodiment of the control method described above. The liquid crystal display module includes: a backlight assembly 110; a liquid crystal panel 120 located on the light-emitting side of the backlight assembly 110; and a sensing assembly 130 located between the backlight assembly 110 and the liquid crystal panel 120, with the photosensitive surface 131 of the sensing assembly 130 facing the backlight assembly 110. Specifically, the specific technical solution of the liquid crystal display module is described in the aforementioned embodiment of the liquid crystal display module, and will not be repeated here.

[0106] The control method includes: obtaining light intensity distribution information of the light generated by the backlight component 110 through the sensing component 130; and controlling the liquid crystal panel 120 to achieve image display based on the light intensity distribution information.

[0107] The light intensity distribution information of the light generated by the backlight component 110 can be directly obtained through the sensing component 130, thereby enabling the backlight distribution to be directly obtained during image display, which speeds up system calibration, improves system calibration accuracy, and helps to improve display effect and increase display speed.

[0108] Specifically, the target image displayed by the liquid crystal display module can be represented as: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates that the light intensity distribution information of the light generated by the backlight component 110 is obtained through the sensing component 130.

[0109] In some embodiments of the present invention, the backlight assembly 110 is a backlight assembly controlled using local dimming technology, and the backlight assembly 110 includes multiple light source structures 111. The light intensity distribution information of the light generated by the backlight assembly 110 is directly obtained through the sensing component 130. This approach to image display can accelerate system calibration and improve its accuracy during the image display process, thereby improving display quality and increasing display speed.

[0110] In addition, such as Figure 3As shown, the sensing component 130 is located between the backlight component 110 and the liquid crystal panel 120. The light generated by the backlight component 110 is also modulated by the sensing component 130 during its acquisition process. Therefore, the liquid crystal panel 120 actually further modulates the light transmitted through the sensing component 130. In other words, the light received by the liquid crystal panel 120 is essentially the light intensity distribution information of the light generated by the backlight component 110. The result of the modulation by the sensing component 130, superimposed on the target image displayed by the liquid crystal display module, is represented as follows: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0111] However, the modulation information of the transmitted light by the sensing component 130 is related to the overall light transmission information of the sensing component 130 and is definite. Therefore, in some embodiments of the present invention, before the step of obtaining the light intensity distribution information, the light transmission information of the sensing component 130 is pre-stored. Therefore, in the step of controlling the liquid crystal panel 120 to realize image display, the liquid crystal panel 120 is controlled to realize image display by combining the light intensity distribution information and the light transmission information.

[0112] Specifically, the light transmission information of the sensing component 130 can be obtained through testing to form the modulation information of the sensing component 130 on the transmitted light. The control method makes the modulation information of the liquid crystal panel 120 as To eliminate the influence of the sensing component 130 on the image display, that is, to ensure that the final displayed target image is:

[0113] in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This represents the modulation information of the liquid crystal panel 120 after taking into account the influence of the sensing component 130 on the image display. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0114] Continue to refer to Figure 3 Combined with reference Figure 5 The liquid crystal display module further includes: a contact surface 150, which is located on the side of the sensing component 130 facing away from the backlight component 110; incident light 151 propagating along the direction of the sensing component 130 toward the liquid crystal panel 120 is reflected on the contact surface 150 to form signal light 152 carrying imaging information; therefore, the control method further includes: acquiring the signal light 152 through the sensing component 130 to perform imaging.

[0115] It can be seen that, in addition to accelerating system calibration and improving calibration accuracy during image display, the control method can also image the image to be imaged 153 that is in contact with the contact surface 150 through the sensing component 130, thereby expanding the function of the liquid crystal display module.

[0116] It should be noted that, in some embodiments of the present invention, the liquid crystal display module further includes a reflective surface 160, which is located between the photosensitive surface 131 of the sensing component 130 and the backlight component 110, so as to reflect the signal light 152 and make the signal light 152 propagate toward the photosensitive surface 131 of the sensing component 130, thereby realizing optical signal acquisition.

[0117] The contact surface 150 and the reflecting surface 160 form a waveguide, and the signal light 152 formed by the incident light 151 after being reflected on the contact surface 150 propagates between the contact surface 150 and the reflecting surface 160 in waveguide mode.

[0118] In other embodiments of the present invention, the contact surface and the reflective surface may also be other surfaces of the liquid crystal display module, as long as the contact surface and the reflective surface can maintain optical smoothness to form a waveguide.

[0119] In some embodiments of the present invention, the backlight assembly 110 is a backlight assembly controlled using locally adjustable backlight technology, and the backlight assembly 110 includes multiple light source structures 111. Therefore, in the step of acquiring the signal light 152 through the sensing assembly 130 for imaging, the light source structure corresponding to the image target 153 on the contact surface 150 (e.g., ...) is turned off. Figure 5 The light source structure corresponding to region 154 in the middle); the light source structure that is not turned off (such as... Figure 5 The incident light is generated by the light source structure corresponding to region 155 in the middle.

[0120] In some embodiments of the present invention, a fixed area can be set on the contact surface 150 to contact the image target 153. Therefore, in the step of collecting the signal light 152 through the sensing component 130 for imaging, it is only necessary to turn off the light source structure at the position corresponding to the fixed area, that is, the light source structure in the projection area of ​​the fixed area on the backlight component 110.

[0121] In some other embodiments of the present invention, the liquid crystal display module may also integrate a touch component. Therefore, before the step of collecting the signal light 152 through the sensing component 130 for imaging, the control method may further include: in the step of detecting the position of the imaged object in contact with the contact surface through the touch component, and collecting the signal light 152 through the sensing component 130 for imaging, turning off the light source component corresponding to the position of the imaged object, that is, the projection of the imaged object on the backlight component 110 is located within the coverage area of ​​the turned-off light source component.

[0122] On the other hand, such as Figure 5 As shown, the light generated by the unclosed light source component is coupled into the waveguide formed by the contact surface 150 and the reflective surface 160 after being transmitted through the sensing component 130, so as to form a signal light 152 carrying imaging information. The signal light 152 is collected by the imaging component 130, thereby realizing imaging. Figure 6 That is, it shows Figures 3 to 5 The image shown is the result of the liquid crystal display module embodiment imaging the image of the image target 153.

[0123] It should be noted that when the backlight assembly 110 is configured as a backlight assembly controlled by local dimming technology, the practice of turning off part of the light source structure of the backlight assembly 110 and using the light generated by the remaining light source structure for imaging is only an example. In other embodiments of the present invention, an imaging light source is integrated into the sensing assembly for imaging.

[0124] refer to Figure 7 The diagram shows a cross-sectional view of the liquid crystal display module used in another embodiment of the control method for the liquid crystal display module of the present invention.

[0125] In this embodiment, the sensing component 230 includes an imaging light source 236, which is adapted to generate the incident light 251; in the step of collecting the signal light 252 through the sensing component 230 for imaging, the backlight component 210 is turned off.

[0126] It should be noted that in this embodiment, the backlight component 210 is a uniform backlight component. That is, the light generated by the backlight component 210 is uniform backlight. However, this is only an example. The technical solution of the present invention does not limit the type of backlight component.

[0127] Accordingly, the present invention also provides a control device for a liquid crystal display module.

[0128] Reference Figure 8 The diagram shows a functional block diagram of an embodiment of the control device for the liquid crystal display module of the present invention.

[0129] It should be noted that the reference Figure 3 The diagram shows a cross-sectional view of the liquid crystal display module used in the embodiment of the control device. The liquid crystal display module includes: a backlight assembly 110; a liquid crystal panel 120 located on the light-emitting side of the backlight assembly 110; and a sensing assembly 130 located between the backlight assembly 110 and the liquid crystal panel 120, with the photosensitive surface 131 of the sensing assembly 130 facing the backlight assembly 110. Specifically, the specific technical solution of the liquid crystal display module is described in the aforementioned embodiment of the liquid crystal display module, and will not be repeated here.

[0130] Therefore, as Figure 8 As shown, the control device 300 includes a display module 310, which is adapted to obtain light intensity distribution information of the light generated by the backlight component 110 through the sensing component 130. The display module 310 is also suitable for combining the light intensity distribution information. The control device 300 controls the liquid crystal panel 120 to achieve image display. The display module 310 of the control device 300 directly obtains the light intensity distribution information of the light generated by the backlight component 110 through the sensing component 130. This allows the backlight distribution to be directly obtained during image display, thereby accelerating the system calibration speed, improving the system calibration accuracy, and ultimately improving the display effect and speed.

[0131] Specifically, the display module 310 is connected to the sensing component 130, and obtains the light intensity distribution information of the light generated by the backlight component 110 through the sensing component. Therefore, the target image displayed by the liquid crystal display module can be represented as: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates that the light intensity distribution information of the light generated by the backlight component 110 is obtained through the sensing component 130.

[0132] In some embodiments of the present invention, the backlight assembly 110 is a backlight assembly controlled using local dimming technology, and the backlight assembly 110 includes multiple light source structures 111. The display module 310 directly obtains the light intensity distribution information of the light generated by the backlight assembly 110 through the sensing component 130. This approach to image display can accelerate system calibration and improve its accuracy during the image display process, thereby improving display quality and increasing display speed.

[0133] like Figure 3 As shown, the sensing component 130 is located between the backlight component 110 and the liquid crystal panel 120. The light generated by the backlight component 110 is also modulated by the sensing component 130 during its acquisition process. Therefore, the liquid crystal panel 120 actually further modulates the light transmitted through the sensing component 130. In other words, the light received by the liquid crystal panel 120 is essentially the light intensity distribution information of the light generated by the backlight component 110. The result of the modulation by the sensing component 130, superimposed on the target image displayed by the liquid crystal display module, is represented as follows: ,in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0134] However, the modulation information of the transmitted light by the sensing component 130 is related to the overall light transmission information of the sensing component 130 and is definite. Therefore, in some embodiments of the present invention, the control device 300 pre-stores the light transmission information of the sensing component 130; the display module 310 combines the light intensity distribution information... The light transmission information is used to control the liquid crystal panel 120 to achieve image display.

[0135] Specifically, the light transmission information of the sensing component 130 can be obtained through testing and pre-stored in the control device 300 to form the modulation information of the sensing component 130 on the transmitted light. The display module 310 makes the modulation information of the liquid crystal panel 120 as To eliminate the influence of the sensing component 130 on the image display, that is, to ensure that the final displayed target image is:

[0136] in, This indicates the target image ultimately displayed by the liquid crystal display module. This indicates the modulation information of the liquid crystal panel 120. This represents the modulation information of the liquid crystal panel 120 after taking into account the influence of the sensing component 130 on the image display. This indicates that the light intensity distribution information of the light generated by the backlight assembly 110 is obtained through the sensing component 130. This indicates the modulation information of the transmitted light by the sensing component 130.

[0137] Continue to refer to Figure 3 Combined with reference Figure 5 The liquid crystal display module further includes a contact surface 150, which is located on the side of the sensing component 130 facing away from the backlight component 110; incident light 151 propagating along the direction of the sensing component 130 toward the liquid crystal panel 120 is reflected on the contact surface 150 to form signal light 152 carrying imaging information; therefore, the control device 300 further includes an imaging module 320, which collects the signal light through the sensing component to perform imaging.

[0138] It can be seen that, in addition to accelerating system calibration and improving calibration accuracy during image display, the control device 300 can also image the image to be imaged 153 that is in contact with the contact surface 150 through the sensing component 130, thereby expanding the function of the liquid crystal display module.

[0139] It should be noted that, in some embodiments of the present invention, the liquid crystal display module further includes a reflective surface 160, which is located between the photosensitive surface 131 of the sensing component 130 and the backlight component 110, so that the signal light 152 propagates toward the photosensitive surface 131 of the sensing component 130, thereby realizing light signal acquisition.

[0140] The contact surface 150 and the reflecting surface 160 constitute a waveguide. The signal light 152 formed after the incident light 151 is reflected on the contact surface 150 propagates between the contact surface 150 and the reflecting surface 160 in waveguide mode. In other embodiments of the present invention, the contact surface and the reflecting surface may also be other surfaces of the liquid crystal display module, as long as the contact surface and the reflecting surface can maintain optical smottness to form a waveguide.

[0141] In some embodiments of the present invention, the backlight assembly 110 is a backlight assembly controlled by locally adjustable backlight technology, and the backlight assembly 110 includes multiple light source structures 111. Therefore, the imaging module 310 is also connected to the backlight assembly 110, and when the sensing component 130 collects the signal light 152 for imaging, it shuts down the light source structure corresponding to the image target 153 on the contact surface 150 (e.g., ...). Figure 5 The light source structure corresponding to region 154 in the middle); the light source structure that is not turned off (such as... Figure 5 The incident light is generated by the light source structure corresponding to region 155 in the middle.

[0142] It should be noted that in some embodiments of the present invention, a fixed area can be set on the contact surface 150 to contact the imaged object 153. Therefore, the imaging module 310 only needs to turn off the light source structure at the position corresponding to the fixed area, that is, the light source structure in the projection area of ​​the fixed area on the backlight assembly 110.

[0143] In other embodiments of the present invention, the liquid crystal display module may also integrate a touch component, so the imaging module may also be connected to the touch component, and the touch component detects the position of the image to be imaged in contact with the contact surface; after obtaining the position of the image to be imaged, the imaging module turns off the light source component corresponding to the position of the image to be imaged, that is, the projection of the image to be imaged on the backlight component is located within the coverage area of ​​the turned-off light source component.

[0144] On the other hand, as shown in Figure 5, the light generated by the unclosed light source component is coupled into the waveguide formed by the contact surface 150 and the reflective surface 160 after being transmitted through the sensing component 130, so as to form a signal light 152 carrying imaging information. The signal light 152 is collected by the imaging component 130, thereby realizing imaging. Figure 6 That is, it shows Figures 3 to 5 The image shown is the result of the liquid crystal display module embodiment imaging the image of the image target 153.

[0145] refer to Figure 7 The diagram shows a cross-sectional view of the liquid crystal display module used in another embodiment of the control device for the liquid crystal display module of the present invention.

[0146] In this embodiment, the sensing component 230 includes an imaging light source 236, which is adapted to generate the incident light 251. Therefore, when the sensing component collects the signal light 252 for imaging, the imaging module is also adapted to turn off the backlight component 210.

[0147] It should be noted that in this embodiment, the backlight component 210 is a uniform backlight component. That is, the light generated by the backlight component 210 is uniform backlight. However, this is only an example. The technical solution of the present invention does not limit the type of backlight component.

[0148] In summary, in the technical solution of this invention, the liquid crystal display module includes a sensing component located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing component facing the backlight assembly. The sensing component can directly obtain the light intensity distribution information of the light generated by the backlight assembly, thereby accelerating the system calibration speed and improving the accuracy of system calibration during image display, thus achieving the purpose of improving display effect and increasing display speed. Furthermore, the materials of the electrodes or interconnect structures of the sensing component can be set as transparent conductors to improve the light transmittance of the sensing component, thereby reducing the influence of the sensing component's placement on the light transmission generated by the backlight assembly, and further improving the display effect. In addition, the liquid crystal display module also includes a contact surface located on the side of the sensing component facing away from the backlight assembly. Incident light propagating along the direction of the sensing component towards the liquid crystal panel is reflected on the contact surface to form signal light carrying imaging information. The sensing component can collect the signal light for imaging. The sensing component can also image the object to be imaged in contact with the contact surface, thereby expanding the functionality of the liquid crystal display module. Furthermore, when the backlight assembly includes multiple light source structures, when the sensing component collects signal light for imaging, the control device shuts down the light source structure corresponding to the imaged object; the unshutted light source structure generates incident light for imaging. The use of locally adjustable backlight technology in the liquid crystal display module allows the generation of incident light using the unshutted light source structure, eliminating the need for an imaging light source in the sensing component and simplifying the structure.

[0149] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A liquid crystal display module, characterized in that, include: Backlight assembly; A liquid crystal panel, wherein the liquid crystal panel is located on the side of the backlight assembly from which light is emitted; A sensing component, wherein the sensing component is located between the backlight component and the liquid crystal panel, and the photosensitive surface of the sensing component faces the backlight component; The contact surface is located on the side of the sensing component that is away from the backlight component. Incident light propagates along the direction of the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information. A reflective surface is located between the photosensitive surface of the sensing component and the backlight component. The signal light is reflected again on the reflective surface and then collected by the sensing component. The reflective surface is the surface of the sensing component facing the backlight component. The contact surface and the reflecting surface constitute a waveguide, and the signal light formed by the incident light after being reflected on the contact surface propagates between the contact surface and the reflecting surface in waveguide mode.

2. The liquid crystal display module as described in claim 1, characterized in that, The sensing component includes a phototransistor, the phototransistor including a first electrode, a second electrode and a control electrode, the control electrode being adapted to control the first electrode and the second electrode to be turned on and off; At least the electrodes of the first and second poles are made of transparent conductors.

3. The liquid crystal display module as described in claim 2, characterized in that, The sensing component further includes an interconnect structure, wherein the interconnect structure is made of a transparent conductor.

4. The liquid crystal display module as described in claim 2 or 3, characterized in that, The transparent conductor includes at least one of transparent conductive oxide, conductive transparent nitride, and transparent conductive graphene.

5. The liquid crystal display module as described in claim 1, characterized in that, Also includes: A control device suitable for controlling a liquid crystal panel to optimize image display.

6. The liquid crystal display module as described in claim 5, characterized in that, The control device is also adapted to obtain light intensity distribution information of the light generated by the backlight component through the sensing component; The control device is suitable for controlling the liquid crystal panel according to the light intensity distribution information.

7. The liquid crystal display module as described in claim 5 or 6, characterized in that, The control device pre-stores the light transmission information of the sensing component; The control device is adapted to control the liquid crystal panel based on the light transmission information.

8. The liquid crystal display module as described in claim 1, characterized in that, The contact surface is the surface of the liquid crystal panel that faces away from the backlight assembly.

9. The liquid crystal display module as described in claim 1, characterized in that, The sensing component includes: an imaging light source, the imaging light source being adapted to generate the incident light; When the sensing component acquires the signal light, the control device is adapted to turn off the backlight component and turn on the imaging light source.

10. The liquid crystal display module as described in claim 1, characterized in that, The backlight assembly includes multiple light source structures; When the sensing component acquires the signal light, the control device shuts down the light source structure corresponding to the imaged object on the contact surface; the unshutted light source structure generates the incident light.

11. The liquid crystal display module as described in claim 1, characterized in that, Also includes: An air layer is located between the backlight assembly and the sensing assembly; A scattering layer is located between the sensing component and the liquid crystal panel.

12. A control method for a liquid crystal display module, the liquid crystal display module comprising: Backlight assembly; A liquid crystal panel, wherein the liquid crystal panel is located on the side of the backlight assembly from which light is emitted; A sensing component, wherein the sensing component is located between the backlight component and the liquid crystal panel, and the photosensitive surface of the sensing component faces the backlight component; The contact surface is located on the side of the sensing component that is away from the backlight component. Incident light propagates along the direction of the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information. A reflective surface is located between the photosensitive surface of the sensing component and the backlight component. The signal light is reflected again on the reflective surface and then collected by the sensing component. The reflective surface is the surface of the sensing component facing the backlight component. The contact surface and the reflective surface form a waveguide. The signal light formed after the incident light is reflected on the contact surface propagates between the contact surface and the reflective surface in a waveguide mode. The control method includes: The light intensity distribution information of the light generated by the backlight component is obtained through the sensing component; Based on the light intensity distribution information, the liquid crystal panel is controlled to optimize image display.

13. The control method as described in claim 12, characterized in that, Before obtaining the light intensity distribution information, the method further includes: pre-storing the light transmission information of the sensing component; In the step of controlling the liquid crystal panel to optimize image display, the liquid crystal panel is controlled to optimize image display based on the light intensity distribution information and the light transmission information.

14. The control method as described in claim 12, characterized in that, The liquid crystal display module further includes a contact surface, which is located on the side of the sensing component that is away from the backlight; Incident light propagates along the direction of the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; The control method further includes: The signal light is acquired by the sensing component for imaging.

15. The control method as described in claim 14, characterized in that, The sensing component includes: an imaging light source, the imaging light source being adapted to generate the incident light; In the step of acquiring the signal light through the sensing component for imaging, the backlight component is turned off.

16. The control method as described in claim 14, characterized in that, The backlight assembly includes multiple light source structures; In the step of acquiring the signal light through the sensing component for imaging, the light source structure corresponding to the imaged object on the contact surface is turned off; the un-turned light source structure generates the incident light.

17. A control device for a liquid crystal display module, wherein, The liquid crystal display module includes: a backlight assembly; a liquid crystal panel located on the side of the backlight assembly from which light is emitted; a sensing assembly located between the backlight assembly and the liquid crystal panel, with the photosensitive surface of the sensing assembly facing the backlight assembly; a contact surface located on the side of the sensing assembly facing away from the backlight assembly, where incident light propagates along the direction from the sensing assembly towards the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; and a reflective surface located between the photosensitive surface of the sensing assembly and the backlight assembly, where the signal light is reflected again and collected by the sensing assembly, the reflective surface being the surface of the sensing assembly facing the backlight assembly; wherein the contact surface and the reflective surface constitute a waveguide, and the signal light formed after the incident light is reflected on the contact surface propagates between the contact surface and the reflective surface in a waveguide mode. The control device is characterized in that it includes a display module, which is adapted to obtain light intensity distribution information of the light generated by the backlight component through the sensing component; the display module is also adapted to control the liquid crystal panel to achieve image display in conjunction with the light intensity distribution information.

18. The control device as claimed in claim 17, characterized in that, The control device has pre-stored the light transmission information of the sensing component; The display module is adapted to control the liquid crystal panel to optimize image display based on the light intensity distribution information and the light transmission information.

19. The control device as claimed in claim 17, characterized in that, The liquid crystal display module further includes a contact surface, which is located on the side of the sensing component that is away from the backlight; Incident light propagates along the direction of the sensing component toward the liquid crystal panel and is reflected on the contact surface to form signal light carrying imaging information; The control device further includes an imaging module, which acquires the signal light through the sensing component to perform imaging.

20. The control device as claimed in claim 19, characterized in that, The sensing component includes: an imaging light source, the imaging light source being adapted to generate the incident light; When the signal light is collected by the sensing component for imaging, the imaging module is also adapted to turn off the backlight component.

21. The control device as claimed in claim 19, characterized in that, The backlight assembly includes multiple light source structures; When the signal light is collected by the sensing component for imaging, the imaging module is also adapted to shut down the light source structure corresponding to the imaged object on the contact surface. The incident light is generated by the light source structure that is not turned off.

22. An electronic device, characterized in that, include: The liquid crystal display module according to any one of claims 1 to 11.

Images