Display device

Abstract

This application provides a display device including a light-emitting component, a first cylindrical lens array, and a display panel. The light-emitting component includes multiple light-emitting unit groups. The first cylindrical lens array is disposed on the light-emitting side of the light-emitting component and includes multiple first cylindrical lens units connected in sequence. The orthographic projection area of ​​one first cylindrical lens unit on the plane of the light-emitting component covers at least one light-emitting unit group. The display panel is disposed on the light-emitting side of the first cylindrical lens array. This display device combines the characteristics of a thin and light structure with 3D display functionality.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display device. Background Technology

[0002] As an important development direction of new display technology, naked-eye 3D display technology is highly favored by people for its realistic and immersive experience, which has led to the development of diverse technical solutions such as cylindrical lenses, variable lenses (variable cells) and directional light sources.

[0003] In the field of large-size glasses-free 3D displays, variable liquid crystal lens technology, side-lit light guide plate technology, and directional backlight technology are limited by their inherent characteristics, making it difficult for them to play a significant role. This has led to the long-term dominance of lenticular lens technology. The specific implementation of this technology involves placing a lenticular lens on the light-emitting side of the display screen to achieve a display effect from multiple viewpoints.

[0004] However, cylindrical lenses are precision optical components, and when placed on the light-emitting side of a display screen, they typically require additional encapsulation. This process inevitably increases the thickness of the display device, contradicting the current trend towards thinner and lighter displays. Utility Model Content

[0005] This application provides a display device that combines a thin and light structure with 3D display functionality.

[0006] This application provides a display device, including:

[0007] A light-emitting component, comprising multiple light-emitting unit groups;

[0008] A first cylindrical lens array is disposed on the light-emitting side of the light-emitting component. The first cylindrical lens array includes a plurality of first cylindrical lens units connected in sequence. The orthographic projection area of ​​one first cylindrical lens unit on the plane where the light-emitting component is located covers at least one group of light-emitting units.

[0009] The display panel is located on the light-emitting side of the first cylindrical lens array.

[0010] In some embodiments, the light-emitting component includes a backlight unit and a light valve, the light valve having multiple light-transmitting channels, and one or more of the light-transmitting channels corresponding to form a light-emitting unit group.

[0011] In some embodiments, the light valve is a liquid crystal light valve.

[0012] In some embodiments, the light-emitting component further includes a light-diffusing layer disposed between the backlight unit and the light valve.

[0013] In some embodiments, the light-emitting unit group includes one or more point light sources.

[0014] In some embodiments, the display device further includes a second cylindrical lens array disposed on the light-emitting side of the first cylindrical lens array, the second cylindrical lens array including a plurality of second cylindrical lens units connected in sequence; the projection of each second cylindrical lens unit onto the first cylindrical lens array covers at least one first cylindrical lens unit.

[0015] In some embodiments, the display device further includes an aperture stop disposed between the first cylindrical lens array and the second cylindrical lens array. The aperture stop has a plurality of light-transmitting holes, and the positions of the plurality of light-transmitting holes correspond one-to-one with the positions of the plurality of first cylindrical lens units.

[0016] In some embodiments, the width of the light-transmitting aperture is smaller than the width of the first cylindrical lens unit.

[0017] In some embodiments, the display device further includes a light guide plate disposed between the light-emitting component and the first cylindrical lens array.

[0018] In some embodiments, the display device further includes a diffusion film disposed between the display panel and the first cylindrical lens array.

[0019] The display device provided in this application includes a light-emitting component, a first lenticular lens array, and a display panel. The light-emitting component includes multiple light-emitting unit groups, and the first lenticular lens array is disposed on the light-emitting side of the light-emitting component. The first lenticular lens array includes multiple sequentially arranged first lenticular lens units. The orthographic projection area of ​​one lenticular lens unit on the plane of the light-emitting component covers at least one light-emitting unit group. This correspondence allows the light to be precisely modulated. Due to its precise light modulation capability, the first lenticular lens array enables the left and right eyes to receive different image information, thereby forming realistic stereoscopic vision in the brain and achieving excellent 3D display effects. Furthermore, in this application, the first lenticular lens array capable of 3D display is disposed between the light-emitting component and the display panel. This unique design eliminates the need for the first lenticular lens array to be disposed on the light-emitting side of the display panel and independently packaged, as is done in existing technologies. This fundamentally avoids the thickness increase problem caused by packaging the lenticular lens array, significantly reducing the overall thickness of the display device and giving it a lightweight structural advantage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a first structure of a display device provided in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of a second structure of the display device provided in an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of a third structure of the display device provided in an embodiment of this application.

[0024] Figure 4 This is a fourth structural schematic diagram of the display device provided in the embodiments of this application.

[0025] Figure 5 This is a fifth structural schematic diagram of the display device provided in the embodiments of this application.

[0026] Figure 6 This is a sixth structural schematic diagram of the display device provided in the embodiments of this application.

[0027] Figure 7 This is a seventh structural schematic diagram of the display device provided in the embodiments of this application.

[0028] Figure 8 This is an eighth structural schematic diagram of the display device provided in the embodiments of this application.

[0029] Figure 9 This is a ninth structural schematic diagram of the display device provided in the embodiments of this application.

[0030] Figure 10 This is a first schematic diagram of forming a virtual light spot provided in an embodiment of this application.

[0031] Figure 11 This is a second schematic diagram for forming a virtual light spot, provided in an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] This application provides a display device that combines a thin and light structure with 3D display functionality. The following description, in conjunction with the accompanying drawings, provides a detailed explanation.

[0034] Please see Figure 1 , Figure 1 This is a schematic diagram of a first structure of a display device provided in an embodiment of this application.

[0035] This application provides a display device 100, which is a device capable of converting electronic signals into visual images and is widely used in many fields such as televisions, computer monitors, mobile phone screens, and billboards. In this application embodiment, the display device 100 can be applied to glasses-free 3D display.

[0036] The display device 100 includes a light-emitting component 11, a first cylindrical lens array 12, and a display panel 20.

[0037] The light-emitting component 11 includes multiple light-emitting unit groups 111, which are connected sequentially. These multiple light-emitting unit groups 111 can be arranged periodically; for example, a single light-emitting unit group 111 can be a backlight zone composed of MiniLEDs or Micro-LEDs, and each group can be driven independently. The light-emitting component 11 can provide a directional emission base light source, and its light-emitting unit groups 111 can be the smallest unit of light control.

[0038] The first cylindrical lens array 12 is disposed on the light-emitting side of the light-emitting component 11. The first cylindrical lens array 12 includes a plurality of first cylindrical lens units 121 arranged in sequence. The orthographic projection area of ​​one first cylindrical lens unit 121 on the plane where the light-emitting component 11 is located covers at least one group of light-emitting units 111, forming a one-to-one or many-to-one modulation unit mapping relationship. The plurality of first cylindrical lens units 121 can be arranged periodically.

[0039] The light-emitting component 11 and the first cylindrical lens array 12 can form a backlight module 10.

[0040] The display panel 20 is disposed on the light-emitting side of the first lens array 12. The display panel 20 is an image generating device (such as an LCD panel or an OLED panel) disposed on the light-emitting side of the first lens array 12, and includes multiple pixel units arranged in an array. Each pixel unit consists of a liquid crystal molecule layer, a driving electrode, and a color filter structure. By adjusting the driving electrode voltage to change the orientation of the liquid crystal molecules, the light transmittance of each sub-pixel (R / G / B) can be precisely controlled to achieve full-color display.

[0041] In this embodiment, the 3D display implementation mechanism is as follows: the light emitted by the light-emitting unit group 111 is precisely deflected by the first cylindrical lens unit 121 to form an outgoing beam with spatial separation characteristics; combined with the pixel-level image synthesis of the display panel 20, such as time-division multiplexing or parallax barrier technology, the left and right eyes receive differentiated image information, and stereoscopic vision is generated under the effect of retinal parallax.

[0042] In existing technologies, conventional solutions place the cylindrical lens on the light-emitting side of the display panel 20, requiring the addition of a protective cover and sealing layer, which undoubtedly increases the thickness of the display device 100. In this embodiment, the first cylindrical lens array 12 is bidirectionally physically protected by the substrate of the light-emitting component 11 and the display panel 20, eliminating the need for additional encapsulation structures. Through pre-modulation of the optical path, beam orientation is completed during the backlighting stage, avoiding the stacking of optical elements and encapsulation structures on the outside of the display panel 20, effectively reducing thickness, which is beneficial for the thinner and lighter design of the display device 100, and also simplifies the manufacturing process and reduces encapsulation costs.

[0043] In some embodiments, the display device 100 can also switch between 2D and 3D.

[0044] In some cases, please refer to Figure 2 , Figure 2 This is a second structural schematic diagram of the display device provided in the embodiments of this application. The light-emitting component 11 includes a backlight unit 1111 and a light valve 1112. The light valve 1112 has multiple light-transmitting channels, and one or more light-transmitting channels correspond to form a first light-emitting unit group 111.

[0045] Please see Figure 3 , Figure 3 This is a schematic diagram of a third structure of the display device provided in an embodiment of this application.

[0046] Multiple backlight units 1111 can employ high-density point light sources. For example, the backlight unit 1111 can be a Mini-LED chip with a Chip-on-Film (COF) package structure, or CFC chip for short. This type of CFC chip has advantages such as small size, high brightness, and low power consumption, providing sufficient and stable light for the display device 100. The backlight units 1111 can be mounted on a circuit board 1114, which is tightly integrated with the backlight units 1111 to form a light strip. This structure facilitates installation and layout, effectively improving the integration and stability of the backlight units 1111.

[0047] The light valve 1112 can achieve 2D and 3D conversion by changing the light transmission channel. For example, the light valve 1112 is a liquid crystal light valve. Understandably, in 3D mode, a driving voltage is applied to the liquid crystal light valve, causing the liquid crystal molecules in a selected light transmission channel area to deflect; the undeflected area forms an optical barrier, and the backlight is emitted directionally only through the open channel to form the light-emitting unit group 111; the beam is split by the first cylindrical lens array 12 to generate a multi-viewpoint 200 stereoscopic image. In 2D mode, the driving voltage is turned off, the liquid crystal molecules return to their parallel alignment, and the light transmission channel enters a fully open state, effectively eliminating the grating effect at the channel boundary. At this time, the backlight can uniformly cover the display panel 20, outputting a traditional 2D image to meet the user's viewing needs in different scenarios.

[0048] Please continue reading. Figure 3 The light-emitting component 11 also includes a light-diffusing layer 1113, which is disposed between the backlight unit 1111 and the light valve 1112. The light-diffusing layer 1113 can be a diffuser plate, whose main function is to scatter the point light source. Since the backlight unit 1111 uses a point light source, the light emitted by it has a certain degree of dispersion. If not processed, it will form undesirable phenomena such as moiré patterns on the display panel 20, affecting image quality. The light-diffusing layer 1113 can convert the discrete LED beam into a uniform surface light source, effectively eliminating moiré patterns and making the displayed image clearer and more uniform.

[0049] Between the backlight unit 1111 and the light-diffusing layer 1113, the display device 100 also includes a lamp support 1115. The lamp support 1115 abuts against both the backlight unit 1111 and the light-diffusing layer 1113, providing support and fixation. The lamp support 1115 can be made of an elastic material, such as silicone. Silicone has good elasticity and flexibility, which can buffer the stress between the backlight unit 1111 and the light-diffusing layer 1113 to a certain extent, while also ensuring close contact between the two, thus improving the structural stability and optical performance of the entire display device 100.

[0050] In other cases, the light-emitting unit group 111 includes one or more point light sources. These point light sources can be MiniLEDs or MicroLEDs. 2D / 3D transformation can be achieved by illuminating a portion or all of the point light sources.

[0051] Understandably, in 3D mode, selective illumination of some point light source groups ensures that the spacing of the activated light sources matches the optical period of the cylindrical lens unit; unilluminated areas form natural light barriers, and the beam is split by the cylindrical lens to generate stereo parallax. In 2D mode, all light-emitting unit groups 111 are driven to emit light uniformly, eliminating directional modulation and outputting a continuous planar light field.

[0052] Please see Figure 4 , Figure 4 This is a fourth structural schematic diagram of the display device provided in the embodiments of this application. The display device 100 in the embodiments of this application also includes a second cylindrical lens array 13, which is also part of the backlight module 10.

[0053] The second cylindrical lens array 13 is located on the light-emitting side of the first cylindrical lens array 12 and is a second-level processing unit for light distribution. The second cylindrical lens array 13 includes a plurality of second cylindrical lens units 131 connected in sequence. The plurality of second cylindrical lens units 131 can be arranged periodically.

[0054] After the light beams initially segmented by the first cylindrical lens unit 121 enter the second cylindrical lens unit 131, the second cylindrical lens unit 131 further deflects and distributes the received light beams from multiple first cylindrical lens units 121 in different directions to multiple spatially denser different viewing directions. This refined light distribution significantly increases the number of final viewpoints 200, providing the observer with a richer and more realistic visual experience. Simultaneously, because the light is more finely segmented and distributed, light interference between different viewpoints 200 is significantly reduced, and crosstalk is effectively suppressed.

[0055] In this configuration, the projection of each second cylindrical lens unit 131 onto the first cylindrical lens array 12 covers at least one first cylindrical lens unit 121. For example, if one second cylindrical lens unit 131 covers N first cylindrical lens units 121, N or more viewpoints 200 can be formed, far exceeding the scheme of setting only one layer of cylindrical lens array, such as setting only the first cylindrical lens array 12. When only one layer of cylindrical lens array 12 is set, each first cylindrical lens unit 121 corresponds to 2 viewpoints 200; when a second cylindrical lens array 13 is added, the number of viewpoints 200 will increase significantly with the number of first cylindrical lens units 121 covered by the second cylindrical lens unit 131 and its own optical characteristics.

[0056] Furthermore, the second lenticular lens array 13 is composed of second lenticular lens units 131 that correspond one-to-one with the pixel units of the display panel 20. This correspondence allows the light emitted from a single pixel unit to be directionally deflected by the matching second lenticular lens unit 131 and precisely projected onto the preset viewpoint 200.

[0057] The distance between each viewpoint 200 and the display panel 20 ranges from 2 to 3.5 m. This distance range effectively suppresses crosstalk between viewpoints 200 through geometric optical constraints. In 3D display mode, the light from each pixel unit is deflected at a specific angle by the corresponding second cylindrical lens unit 131, forming discretely distributed viewpoints 200 on the viewing plane, thus achieving naked-eye 3D display.

[0058] Both the first cylindrical lens unit 121 and the second cylindrical lens unit 131 are freeform cylindrical lenses. The cylindrical profile of the freeform cylindrical lens is a freeform surface generated by a complex mathematical algorithm according to specific optical design requirements. This freeform surface can more precisely control the propagation path of light, achieving more flexible and efficient control of light, thereby meeting the high requirements for light quality.

[0059] The cylindrical profile accuracy of a freeform cylindrical lens is less than or equal to 50 nm. This accuracy directly affects the lens's control precision over light. If the profile accuracy is too high, meaning the actual profile deviates significantly from the theoretical design, unexpected scattering and refraction will occur as light passes through the lens, causing the light propagation path to deviate from the expected path, thus affecting light uniformity and collimation. However, when the profile accuracy is less than or equal to 50 nm, the freeform cylindrical lens can precisely control the light according to the theoretical design. Light passing through the lens propagates strictly along the predetermined path, achieving highly uniform light distribution and precise angle control.

[0060] Please see Figure 5 , Figure 5 This is a fifth structural schematic diagram of the display device provided in the embodiments of this application.

[0061] The width W2 of the second cylindrical lens array 13 is equal to the width W1 of the first cylindrical lens array 12. This equal-width design ensures that the optical path remains stable when light passes through the two lens arrays successively, effectively suppressing light scattering and energy loss caused by width mismatch.

[0062] Furthermore, the width of the second cylindrical lens unit 131 is configured to be equal to the width P of the pixel unit in the display panel 20 to achieve pixel-level optical alignment.

[0063] In some embodiments, the width W1 of the first cylindrical lens array 12 satisfies the product of the number of viewpoints 200 and the width P of the pixel unit.

[0064] In other embodiments, for example, when the virtual light source enhancement mode is enabled (such as when a single point light source is dynamically brightened to be equivalent to a three-point light source), the width W1 of the first cylindrical lens unit 121 is adjusted to be 3 times the product of the number of viewpoints 200 and the width P of the pixel unit.

[0065] In a specific embodiment, the width W1 of the first lens array 12 is not fixed but can be flexibly adjusted according to actual needs. Different application scenarios and different display requirements may require optimization of the width setting. Therefore, no specific restrictions are imposed on its setting here, and designers can make reasonable choices and designs according to the actual situation to achieve the best display effect.

[0066] Please see Figure 6 , Figure 6 This is a sixth structural schematic diagram of the display device provided in the embodiments of this application.

[0067] The first lens array 12 may first perform preliminary beam splitting and focusing on the light emitted from the light source, so that the light beams form a beam with a certain regular distribution. However, these beams may still have some stray light and overlap during propagation, affecting the uniformity and accuracy of the light.

[0068] To address this issue, the display device 100 also includes an aperture 14, which may also be part of the backlight module 10.

[0069] Aperture 14 is an optical element used to control the range and amount of light passing through. Aperture 14 can be made of materials such as metal or plastic, and its thickness can be 50 to 200 μm. By setting openings (light-transmitting holes) of different shapes and sizes at specific positions, the propagation path of light is restricted, thereby achieving the filtering and control of light.

[0070] An aperture 14 is positioned between the first cylindrical lens array 12 and the second cylindrical lens array 13. The aperture 14 has multiple light-transmitting holes, each configured to allow a single light spot to pass through. This means that each light-transmitting hole only allows light from a specific position and direction to pass through, effectively filtering out stray and overlapping light, ensuring that the light passing through the aperture 14 is an independent, clear, single light spot. This design significantly improves light utilization and uniformity, providing high-quality light input for further processing by the second cylindrical lens array 13.

[0071] The spacing between adjacent light-transmitting holes is equal to the period width of the first cylindrical lens unit 121. The first cylindrical lens unit 121 shapes and focuses light in a specific direction, and its period width determines the distribution pattern of light in a certain direction.

[0072] When the spacing between adjacent light-transmitting holes is equal to the periodic width of the first cylindrical lens unit 121, it can be ensured that the single light spot passing through each light-transmitting hole can accurately propagate and distribute according to a preset pattern after being processed by the first cylindrical lens unit 121. This precise matching relationship can avoid problems such as misalignment, overlap, or missing light during propagation, further improving the uniformity and accuracy of light on the display panel 20.

[0073] The aperture 14 is fabricated using an exposure and development film process. This process is based on advanced exposure and development techniques, which enable the formation of extremely precise patterns on the film. The precision of these patterns can reach the micrometer level, thereby ensuring that the boundaries between the light-transmitting and non-light-transmitting areas on the aperture 14 are clear and the dimensions are accurate.

[0074] The aperture 14 has an elongated, strip-shaped opening, the length of which is parallel to the extension direction of the first cylindrical lens unit 121. This precise matching of the aperture's period with that of the first cylindrical lens unit 121 minimizes the deviation in the light spot position, thus meeting display requirements.

[0075] Furthermore, the width of the light-transmitting aperture is less than or equal to half the width of the first cylindrical lens unit 121, which effectively improves the uniformity of the center brightness and reduces crosstalk between viewpoints 200.

[0076] The aperture ratio of the aperture 14 is 20% to 50%, for example, 30% to 40%. Within this range, the aperture ratio of the aperture 14 can achieve the best balance between brightness and light uniformity, providing sufficient brightness to meet the usage requirements of the display device in different environments, while effectively controlling stray light and ensuring uniform light distribution on the display panel 20.

[0077] Please see Figure 7 , Figure 7 This is a seventh structural schematic diagram of the display device provided in the embodiments of this application. The display device 100 also includes a light guide plate 15, which is typically made of a transparent material, such as glass or polymethyl methacrylate (PMMA). The light guide plate 15 may have a special microstructure, such as dots, prisms, etc.

[0078] A light guide plate 15 is disposed between the light-emitting component 11 and the first columnar lens array 12. The light guide plate 15 is configured to collimate the light generated by the light-emitting component 11. Specifically, the main function of the light guide plate 15 is to convert the point light source or line light source generated by the light-emitting component 11 into a surface light source and collimate the light, so that the light can propagate in a specific direction and angle, thereby improving the utilization rate and uniformity of the light.

[0079] The thickness D1 of the light guide plate 15 can be 5 to 30 mm, preferably 8 to 15 mm, and can be set according to the light emission pattern of the light-emitting component 11. For example, when the light-emitting component 11 is a direct-lit backlight module 10, the thickness of the light guide plate 15 is greater than or equal to 10 mm to avoid hot spots. When the light-emitting component 11 is a side-lit backlight module 10, the thickness of the light guide plate 15 is less than or equal to 5 mm to achieve ultra-thinness.

[0080] The light guide plate 15 can be divided into multiple light guide sections 151, each light guide section 151 corresponding to one or more light-emitting unit groups 111.

[0081] The light processed by adjacent light guide sections 151 may interpenetrate, causing light crosstalk. To resolve this issue, please refer to... Figure 8 , Figure 8This is an eighth structural schematic diagram of the display device provided in the embodiments of this application. The display device 100 also includes an isolator 152, which is an element used to separate adjacent components. In this backlight module 10, the isolator 152 is disposed between adjacent light guide portions 151 to prevent light crosstalk and ensure that light can propagate independently and accurately, thereby improving the overall performance and display quality of the backlight module 10.

[0082] To better prevent light crosstalk, the isolator 152 can be made of a black material layer, such as a black ink layer. Black materials have high light absorption properties; when light shines on the black material layer, most of the light is absorbed, and only a very small portion is reflected or transmitted, effectively preventing light from interfering with each other.

[0083] Please continue reading. Figure 3 The light guide plate 15 can be connected to adjacent structures via an adhesive layer 18, such as OCA (Optically Clear Adhesive). For example, if the light guide plate 15 is sandwiched between the first column lens array 12 and the light valve 1112, then the light guide plate 15 is connected to both the first column lens array 12 and the light valve 1112 via the adhesive layer 18.

[0084] When light enters the display panel 20 directly from the first cylindrical lens array 12, moiré patterns may appear due to light interference, which can negatively impact the quality of the displayed image. To effectively eliminate moiré patterns, the display device 100 also includes a diffusion film 30, which is disposed between the display panel 20 and the first cylindrical lens array 12. This diffusion film 30 can be a linear diffusion film 30, wherein the extension direction of the microstructure is parallel to the long axis of the first cylindrical lens unit 121. When light exits from the first cylindrical lens array 12, it passes through this linear diffusion film 30. The microstructure of the linear diffusion film 30 performs specific scattering processing on the light, changing the propagation direction and distribution state of the light, thereby breaking the light interference conditions that may produce moiré patterns. The light processed by the linear diffusion film 30 is ultimately rendered by the display panel 20 to present a clear, moiré-free, high-quality image, providing users with a superior visual experience.

[0085] Please see Figure 9 , Figure 9This is a ninth structural schematic diagram of the display device provided in this application embodiment. The display device 100 further includes a first condenser lens 16, which is disposed between the light guide plate 15 and the first columnar lens array 12. The width of the first condenser lens 16 in the display device 100 can be equal to the width W4 of the light guide plate 15 to eliminate edge light loss. The first condenser lens 16 is configured to converge light rays. Specifically, the first condenser lens 16 is configured to further converge the collimated light rays output from the light guide plate 15 to a preset angle range (within ±5°); or, to compensate for the manufacturing tolerances of the dots on the light guide plate 15, ensuring that the center offset of the light spot is ≤3μm to meet the alignment requirements of 4K displays.

[0086] Please continue reading. Figure 9 The display device 100 also includes a second condenser lens 17, which is disposed on the light-emitting side of the light-emitting component 11. The second condenser lens 17 has the function of refracting the light emitted by the point light source, and through this refraction, the effect of multiple virtual light sources can be achieved.

[0087] Specifically, the display device 100 further includes a control module configured to perform any one or a combination of the following steps.

[0088] Please see Figure 10 , Figure 10 This is a first schematic diagram of forming a virtual light spot provided in an embodiment of this application.

[0089] The first step involves simultaneously lighting two adjacent point light sources and adjusting their brightness ratio to create an equivalent virtual light source between them. Specifically, the adjacent first point light source A1 and second point light source A2 are driven synchronously, and their brightness is adjusted according to a specific weight ratio. Let the weight coefficient be α, and 0.2 ≤ α ≤ 0.8, then the brightness I of the first point light source A1... A1 =I max ×(1-α), the brightness I of the second point light source A2 A2 =I max ×α. When α is 0.5, an equivalent virtual light source B1 will be formed at the midpoint of the line connecting the first point light source A1 and the second point light source A2.

[0090] Please see Figure 11 , Figure 11 This is a second schematic diagram for forming a virtual light spot, provided in an embodiment of this application.

[0091] The second step involves dynamically adjusting the brightness of a single point light source, effectively making it equivalent to multiple virtual light sources with spatial offsets. For example, one physical point light source can generate three virtual light sources through brightness scanning, thus increasing the number of viewpoints 200 to three times the number that a single physical point light source can serve. Specifically, during the time period t1, the brightness of point light source M is set to 120% I. max At this time, the second focusing lens 17 refracts the light emitted from the point light source, causing the virtual light source X to shift to the left by Δs relative to the point light source M, thus forming the viewpoint L1; during the time period t2, the brightness of the point light source M is adjusted to 80% I. max The second focusing lens 17 does not refract the light emitted from the point light source M (i.e., the light passes through directly). At this time, the offset of the virtual light source Y relative to the point light source M is 0, forming viewpoint C1; during the time period t3, the brightness of the point light source M is set to 150% I. max The second focusing lens 17 refracts the light emitted from the point light source M again, causing the virtual light source Z to shift to the right by Δs relative to the point light source M, forming viewpoint R1. Because the switching speed of the point light source is extremely fast, reaching 240 times per second, the human eye cannot perceive this flickering phenomenon and will only feel that there are three light sources (i.e., viewpoint L1, viewpoint C1, and viewpoint R1) at the same time.

[0092] As described in the second step above, when a single point light source is dynamically brightened to be equivalent to a three-point light source, the width W1 of the first cylindrical lens unit 121 needs to be adjusted. The adjusted width W1 is the product of three times the number of viewpoints 200 and the width P of the pixel unit.

[0093] In other cases, the display device 100 also includes a liquid crystal light valve disposed between the light-emitting component 11 and the second condenser lens 17. As described above, the liquid crystal light valve has unique optical characteristics, and the arrangement of its internal liquid crystal molecules can change according to the change of the applied electric field, thereby precisely controlling the size, shape and position of its light-transmitting area.

[0094] In the first step described above, the local light-transmitting area of ​​the liquid crystal light valve can precisely transmit light emitted from two adjacent point light sources. By applying a specific electric field signal to the liquid crystal light valve through the control module, the size and position of the local light-transmitting area can be flexibly adjusted to accommodate adjacent point light sources with different spacing and arrangements. This ensures that the light emitted from both point light sources can pass through the light-transmitting area efficiently and accurately, thereby providing stable and controllable lighting conditions for the subsequent formation of an equivalent virtual light source between the two.

[0095] In the second step described above, the liquid crystal light valve can dynamically change the characteristics of its light-transmitting area according to the instructions issued by the control module.

[0096] Specifically, during different time periods (t1, t2, t3) of the point light source brightness adjustment, the control module synchronously applies corresponding electric field change signals to the liquid crystal light valve. During time period t1, when the point light source brightness is 120%... max Furthermore, when the virtual light source needs to shift left by Δs, the light-transmitting area of ​​the liquid crystal light valve changes accordingly, and its shape and position are adjusted to allow the light to achieve the effect of shifting left after refraction; during the time period t2, the brightness of the point light source is 80%I. max Furthermore, the virtual light source remains unbiased, and the light-transmitting area of ​​the liquid crystal light valve is adjusted to allow direct light transmission without interfering with the direction of light propagation; during time period t3, the brightness of the point light source is 150% I. max Furthermore, when the virtual light source needs to be shifted to the right by Δs, the liquid crystal light valve changes the characteristics of the light-transmitting area again, causing the light to be refracted and shifted to the right. Through the coordinated operation of the liquid crystal light valve, the point light source brightness adjustment, and the second condenser lens 17, the effect of a single point light source being equivalent to multiple virtual light sources can be achieved more accurately and flexibly, further improving the number of viewpoints 200 and the display quality of the display device 100, and meeting diverse application needs such as high resolution and multi-view display.

[0097] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0098] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0099] The display device provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A display device, characterized by comprising: include: A light-emitting component, comprising multiple light-emitting unit groups; A first cylindrical lens array is disposed on the light-emitting side of the light-emitting component. The first cylindrical lens array includes a plurality of first cylindrical lens units connected in sequence. The orthographic projection area of ​​one first cylindrical lens unit on the plane where the light-emitting component is located covers at least one group of light-emitting units. The display panel is located on the light-emitting side of the first cylindrical lens array.

2. The display device according to claim 1, wherein The light-emitting component includes a backlight unit and a light valve. The light valve has multiple light-transmitting channels, and one or more of the light-transmitting channels correspond to form a light-emitting unit group.

3. The display device according to claim 2, wherein The optical valve is a liquid crystal optical valve.

4. The display device according to claim 3, wherein The light-emitting component further includes a light-diffusing layer, which is disposed between the backlight unit and the light valve.

5. The display device according to claim 1, wherein The light-emitting unit group includes one or more point light sources.

6. The display device according to any one of claims 1 to 5, wherein It also includes a second cylindrical lens array disposed on the light-emitting side of the first cylindrical lens array. The second cylindrical lens array includes a plurality of second cylindrical lens units connected in sequence. The projection of each second cylindrical lens unit onto the first cylindrical lens array covers at least one first cylindrical lens unit.

7. The display device according to claim 6, wherein It also includes an aperture stop, which is disposed between the first cylindrical lens array and the second cylindrical lens array. The aperture stop has multiple light-transmitting holes, and the positions of the multiple light-transmitting holes correspond one-to-one with the positions of the multiple first cylindrical lens units.

8. The display device according to claim 7, wherein The width of the light-transmitting hole is smaller than the width of the first cylindrical lens unit.

9. The display device according to any one of claims 1 to 5, wherein It also includes a light guide plate, which is disposed between the light-emitting component and the first cylindrical lens array.

10. The display device according to any one of claims 1 to 5, wherein It also includes a diffusion film disposed between the display panel and the first cylindrical lens array.

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