A two-dimensional and three-dimensional switching display screen based on liquid crystal lens

Abstract

The application discloses a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, which comprises a first substrate, a plurality of first electrode groups arranged on the first substrate, a same number of first annular electrodes in each first electrode group, concentric annular arrangement of each first annular electrode, a second substrate arranged opposite to the first substrate, a second annular electrode group arranged on the second substrate and corresponding to each first annular electrode on the first substrate, a plurality of second annular electrodes in the second annular electrode group, and application of different bias voltages to each second annular electrode group to form a gradual potential difference between the second annular electrode group and the first annular electrode, a liquid crystal layer arranged between the first substrate and the second substrate, and liquid crystal molecules filled in the liquid crystal layer. The application improves the display effect without increasing too many driving voltage sources.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of liquid crystal lens, in particular to a two-dimensional and three-dimensional switching display screen based on liquid crystal lens. BACKGROUND

[0002] Lens is a basic optical device, which can be found everywhere in optical instruments and equipment. With the development of optical technology, the requirements for lenses are getting higher and higher, one of which is to require continuous adjustable focal length of the lens, and the other is to provide large focal length lenses.

[0003] Liquid crystal lens is a technology created by using the unique physical and optical properties of liquid crystal material. Unlike traditional glass lenses, liquid crystal lenses can converge or diverge incident light according to the electric field applied to them, and in particular, the focal length of the liquid crystal lens can be adjusted by changing the supply voltage. Because the liquid crystal lens does not need to use mechanical action to adjust the focal length, the liquid crystal lens is more suitable for application in many image acquisition technologies than the traditional glass lens.

[0004] With the rapid development of stereoscopic display technology, there is an increasing demand for stereoscopic display devices. Among the many technologies for realizing three-dimensional stereoscopic display, naked-eye stereoscopic display is favored in the field of three-dimensional stereoscopic display because it does not require the viewer to wear glasses. When liquid crystal lenses are applied to display devices, naked-eye stereoscopic display can be achieved. Among them, using Fresnel liquid crystal lens to simulate ideal Fresnel lens can improve the effect of naked-eye display. The existing Fresnel liquid crystal lens divides the liquid crystal layer into multiple lens regions, and each lens region corresponds to a sub-lens of the Fresnel lens. According to the characteristics of the real Fresnel lens, the width of the lens region gradually decreases from the center to the edge. Since the number of electrodes in each lens region is generally the same, the width of the electrode closer to the center is larger, the efficiency of fitting the ideal Fresnel lens topography is lower, the available light efficiency is lower, and the display effect is poorer. SUMMARY

[0005] The applicant found that the prior art increases the number of electrodes closer to the center to increase the potential difference order of the lens region closer to the center, thereby improving the efficiency of fitting the ideal Fresnel lens topography, improving the available light efficiency, and improving the display effect. However, increasing the number of electrodes also increases the number of driving voltage sources. Too many hardware circuits such as driving chips will reduce the yield.

[0006] In view of the above part of the defects of the prior art, the technical problem to be solved by the present application is to provide a two-dimensional and three-dimensional switching display screen based on liquid crystal lens, which aims to improve the display effect without increasing too many driving voltage sources.

[0007] To achieve the above objectives, the present invention discloses a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, the display screen comprising:

[0008] A first substrate; a plurality of first electrode groups are disposed on the first substrate, each first electrode group including the same number of first ring electrodes, and the first ring electrodes are arranged in concentric rings; the first ring electrodes in the same order in each first electrode group are connected to the same first driving voltage source, the first ring electrodes in the same first electrode group have the same width, and the width of the first ring electrodes in different first electrode groups gradually decreases along a first direction; wherein, the first direction is the direction from the center of the first ring electrode outward.

[0009] A second substrate is disposed opposite to the first substrate; a second ring electrode group is disposed on the second substrate in a region corresponding to each of the first ring electrodes on the first substrate; the second ring electrode group includes a plurality of second ring electrodes and each second ring electrode group is used to apply different bias voltages to form a gradual potential difference between the second ring electrode group and the first ring electrode; the outermost second ring electrode in each second ring electrode group along the first direction is connected to the same second driving voltage source, and the second ring electrodes in each second ring electrode group in the same order from the inner side of the first direction are connected to the same third driving voltage source; the number of second ring electrodes in the second ring electrode group in the same region corresponding to the first electrode group is the same, and the number of second ring electrodes in the second ring electrode group in different regions corresponding to the first electrode group gradually decreases along the first direction.

[0010] A liquid crystal layer is disposed between the first substrate and the second substrate, and the liquid crystal layer is filled with liquid crystal molecules; the liquid crystal molecules are used to deflect after each of the first ring electrodes and each of the second ring electrodes is connected to their respective preset potentials to realize three-dimensional display and / or two-dimensional display.

[0011] When no voltage is applied between the first electrode group and each of the second annular electrode groups or an equal voltage is applied, the display screen is in a two-dimensional display state; when a corresponding voltage is applied between the first electrode group and each of the second annular electrode groups, a Fresnel liquid crystal sub-lens is formed, and the display screen is in a three-dimensional display state.

[0012] Optionally, the potential applied by each of the first driving voltage sources to the corresponding first ring electrode within the same first electrode group gradually increases along the first direction; the potential applied by each of the third driving voltage sources to the corresponding second ring electrode within the same second ring electrode group gradually decreases along the first direction.

[0013] Optionally, in implementing 3D display, the connection of each of the first annular electrodes and each of the second annular electrodes to their respective preset potentials is as follows:

[0014] The first ring electrode is connected to a first potential, and the first potential corresponding to each of the first ring electrodes in the same first electrode group gradually increases along a first direction; the second ring electrode is connected to a second potential, and the first potential corresponding to each of the first ring electrodes in the same second ring electrode group gradually decreases along a first direction.

[0015] Optionally, in implementing a two-dimensional display, the connection of each of the first annular electrodes and each of the second annular electrodes to their respective preset potentials is as follows:

[0016] Each of the second ring electrodes is connected to zero potential; the first ring electrode is connected to a third potential, and all of the third potentials are the same potential.

[0017] Optionally, the number of the first annular electrodes in the first electrode group is greater than or equal to the minimum number of electrodes capable of forming a Fresnel liquid crystal lens morphology.

[0018] Optionally, the number of the second annular electrodes in the second annular electrode group can be set according to the required display accuracy.

[0019] Optionally, the first annular electrode is arranged in layers, with adjacent first annular electrodes located at different layers; the second annular electrode is arranged in layers, with adjacent second annular electrodes located at different layers.

[0020] The beneficial effects of this invention are as follows: 1. This invention provides a second ring electrode group on a second substrate corresponding to each of the first ring electrodes on the first substrate. The second ring electrode group includes multiple second ring electrodes, and each second ring electrode group is used to apply different bias voltages to form a gradual potential difference between the second ring electrode group and the first ring electrode. Compared with the prior art, where one first ring electrode can only generate one potential difference, the closer to the center, the wider the electrode becomes due to the same number of potential levels, resulting in lower efficiency in fitting the ideal Fresnel lens morphology. In this invention, one first ring electrode corresponds to multiple second ring electrodes and can generate multiple potential differences. The closer the first ring electrode is to the center, the more second ring electrodes it corresponds to and the more potential difference levels it generates, thus improving the efficiency in fitting the ideal Fresnel lens morphology, improving the usable light efficiency, and enhancing the display effect. 2. In this invention, the outermost second ring electrode along the first direction in each second ring electrode group is connected to the same second driving voltage source, and the second ring electrodes in the same order from the inner side of the first direction in each second ring electrode group are connected to the same third driving voltage source. This invention connects the second ring electrodes in each second ring electrode group, starting from the inner side in the first direction, to the same third driving voltage source. Compared to the prior art that directly increases the number of first ring electrodes, this invention effectively reduces the number of driving voltage sources, thereby reducing the yield reduction problem caused by an excessive number of hardware circuits such as driving chips. 3. The number of second ring electrodes in the second ring electrode group of this invention is set according to the required display accuracy, which allows production to adapt to demand and avoids resource waste. 4. The first ring electrodes of this invention are arranged in layers, with adjacent first ring electrodes located at different layers; the second ring electrodes are also arranged in layers, with adjacent second ring electrodes located at different layers. The layered arrangement eliminates the need for insulating spacers between adjacent electrodes on the same horizontal plane, improving the display effect.

[0021] In summary, this invention can improve the efficiency of ideal Fresnel lens morphology, increase the available light efficiency, and enhance the display effect without increasing the number of driving voltage sources. It also reduces the problem of reduced yield caused by an excessive number of hardware circuits such as driving chips. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens according to a specific embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the mechanism of a Fresnel liquid crystal lens display device in the prior art;

[0024] Figure 3 This is a schematic diagram of the Fresnel lens formed in a Fresnel liquid crystal lens display device in the prior art;

[0025] Figure 4 This is a schematic diagram of the mechanism of a Fresnel liquid crystal lens display device in another prior art;

[0026] Figure 5 This is a schematic diagram of a Fresnel lens formed in a Fresnel liquid crystal lens display device in another prior art;

[0027] Figure 6 This is a schematic diagram of a Fresnel lens formed by a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, according to a specific embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of fitting an ideal Fresnel lens to a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens according to a specific embodiment of the present invention;

[0029] Figure 8 This is a top-view schematic diagram of the first electrode group corresponding to a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, provided in a specific embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the potential difference between the first and second annular electrodes, viewed from above, of a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, provided in a specific embodiment of the present invention. Detailed Implementation

[0031] This invention discloses a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens. Those skilled in the art can refer to the content of this document and appropriately modify the technical details to achieve the desired implementation. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The methods and applications of this invention have been described through preferred embodiments. Those skilled in the art can clearly modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit, and scope of this invention to implement and apply the technology of this invention.

[0032] The applicant's research revealed that existing technologies, by adding more electrodes connected to different potentials closer to the center of the lens region, increase the number of potential difference levels in that region, thereby improving the efficiency of the ideal Fresnel lens morphology, the available light efficiency, and the display effect. However, increasing the number of electrodes also increases the number of driving voltage sources, and an excessive number of hardware circuits such as driving chips can lead to a decrease in yield.

[0033] The structure of conventional liquid crystal Fresnel lens display devices can generally be as follows: Figure 2 As shown, Figure 2 Showing half of the liquid crystal Fresnel lens, Figure 2In the diagram, 201 is the first substrate, 202 is the annular electrode disposed on the first substrate, 203 is the driving voltage source for the annular electrode 202, providing a corresponding voltage to the annular electrode 202, 204 is the second substrate, 205 is the common surface electrode, 206 is the liquid crystal molecule, and 207, 208 and 209 are the three regions corresponding to the sub-lenses of the Fresnel lens.

[0034] Figure 3 for Figure 2 Corresponding to Fresnel lenses formed by existing technology, 207, 208, and 209 correspond to three sub-lens regions, from Figure 3 As can be seen in the prior art, the number of steps formed by the potential difference in each sub-lens region is consistent. However, due to the structure of the Fresnel lens, the closer the sub-lens region is to the center, the wider the step is. This results in a lower efficiency in fitting the ideal Fresnel lens shape, a lower usable light efficiency, and a worse display effect.

[0035] To address the problem of low efficiency in fitting ideal Fresnel lens morphologies in existing technologies, another existing technology proposes a solution, such as... Figure 4 As shown, Figure 4 Showing half of the liquid crystal Fresnel lens, Figure 4 In the diagram, 401 is the first substrate, 402 is a ring electrode disposed on the first substrate, 403 is the driving voltage source for the ring electrode 402, providing a corresponding voltage to the ring electrode 402, 404 is the second substrate, 405 is the common surface electrode, 406 is the liquid crystal molecule, and 407, 408, and 409 are the three regions corresponding to the sub-lenses of the Fresnel lens. Figure 4 In the sub-lens region, the number of ring electrodes increases as it gets closer to the center.

[0036] Figure 5 for Figure 4 Corresponding to Fresnel lenses formed by existing technology, 407, 408, and 409 correspond to three sub-lens regions, from Figure 5 As can be seen, the greater the number of annular electrodes in the sub-lens region closer to the center, the greater the potential difference, the more steps there are, and the narrower the steps become. This improves the efficiency of fitting the ideal Fresnel lens morphology, increases the usable light efficiency, and enhances the display effect. However, it is evident that this existing technology, compared to the previous one, significantly increases the number of driving voltage sources, and the excessive number of hardware circuits such as driving chips leads to a decrease in yield.

[0037] Therefore, embodiments of the present invention provide a two-dimensional and three-dimensional switching display screen based on a liquid crystal lens, such as... Figure 1 As shown, the display screen includes:

[0038] A first substrate 101 is provided with a plurality of first electrode groups, each first electrode group including the same number of first annular electrodes 102, and the first annular electrodes 102 are arranged in concentric rings; the first annular electrodes 102 in the same order in each first electrode group are connected to the same first driving voltage source 103, the first annular electrodes 102 in the same first electrode group have the same width, and the width of the first annular electrodes 102 in different first electrode groups gradually decreases along a first direction; wherein, the first direction is the direction from the center of the first annular electrode 102 outward.

[0039] A second substrate 104 is disposed opposite to the first substrate 101; a group of second ring electrodes 105 is disposed on the second substrate 104 in a region corresponding to each of the first ring electrodes 102 on the first substrate 101; the group of second ring electrodes 105 includes a plurality of second ring electrodes 105 and each group of second ring electrodes 105 is used to apply different bias voltages to form a gradual potential difference between the group of second ring electrodes 105 and the first ring electrodes 102; the outermost second ring electrode 105 in each group of second ring electrodes 105 along the first direction is connected to the same second driving voltage source 106, and the second ring electrodes 105 in each group of second ring electrodes 105 in the same order from the inner side of the first direction are connected to the same third driving voltage source 107; the number of second ring electrodes 105 in the group of second ring electrodes 105 in the region corresponding to the first electrode group is the same, and the number of second ring electrodes 105 in the group of second ring electrodes 105 in the regions corresponding to the first electrode group gradually decreases along the first direction.

[0040] A liquid crystal layer is disposed between the first substrate 101 and the second substrate 104, and the liquid crystal layer is filled with liquid crystal molecules. The liquid crystal molecules are used to deflect after each first annular electrode 102 and each second annular electrode 105 is connected to its respective preset potential to realize three-dimensional display and / or two-dimensional display.

[0041] When no voltage is applied between the first electrode group and each of the second ring electrodes 105 groups or an equal voltage is applied, the display screen is in a two-dimensional display state; when a corresponding voltage is applied between the first electrode group and each of the second ring electrodes 105 groups, a Fresnel liquid crystal sub-lens is formed, and the display screen is in a three-dimensional display state.

[0042] exist Figure 1 In the middle, there are three first electrode groups that correspond to three Fresnel liquid crystal sub-lenses, namely 109, 110 and 111.

[0043] It's important to note that liquid crystal lenses play a crucial role in glasses-free 3D displays. Glasses-free 3D technology typically utilizes a special arrangement of liquid crystal display screens to simulate the visual effects of the human eye observing the natural world, thereby creating stereoscopic images. Liquid crystal lenses play a key role in this process. In glasses-free 3D displays, liquid crystal lenses can alter the polarization direction of light, thus affecting the image seen by the human eye from different angles. By combining liquid crystal lenses with special image sources and reflective films, 3D visual effects can be achieved without glasses. Liquid crystal lenses can also change the focusing position of light, thus affecting the sharpness and depth of the 3D image. For example, by adjusting the focal length and viewing angle of the liquid crystal lens, the images seen by the left and right eyes can be focused at different positions in front of the screen, creating a stereoscopic effect. Furthermore, liquid crystal lenses can control image visibility by changing the polarization state of light. For example, in light-barrier 3D technology, liquid crystal lenses can be used with special polarizing films to present the images for the left and right eyes at different viewing angles, thereby achieving a 3D visual effect. In summary, liquid crystal lenses play a crucial role in glasses-free 3D displays, with applications spanning all stages from image source to final display. As glasses-free 3D technology continues to develop, the application of liquid crystal lenses in this field will continue to expand and be optimized.

[0044] In one specific embodiment, such as Figure 6 As shown, Figure 6 These are the three Fresnel liquid crystal sub-lenses 109, 110, and 111 corresponding to the first electrode group. Figure 6 As can be seen from the embodiments, the present invention can achieve and Figure 5 To achieve the same effect as existing technologies, the closer to the center of the sub-lens region, the more ring electrodes are formed, resulting in a greater potential difference, more steps, and narrower steps. This improves the efficiency of fitting the ideal Fresnel lens morphology, increases the usable light efficiency, and enhances the display effect. However, from... Figure 1 and Figure 4 The comparison shows that the embodiments of the present invention greatly reduce the setting of additional driving voltage sources and reduce the problem of reduced yield caused by an excessive number of hardware circuits such as driving chips.

[0045] In one specific embodiment, the ideal Fresnel lens morphology corresponding to the embodiment of the present invention can be as follows: Figure 7 As shown, Figure 7 The three semi-transparent lenses in the middle correspond to Fresnel liquid crystal mirror lenses in areas 109, 110, and 111.

[0046] In one specific embodiment, the top view of the display screen structure corresponding to the embodiment of the present invention can be as follows: Figure 8 As shown, Figure 8 The central display screen is divided into three Fresnel-transparent liquid crystal mirror lens areas: 109, 110, and 111.

[0047] In one specific embodiment, the Fresnel lens of the present invention can be implemented as follows: Figure 9 As shown, potentials of 1V, 2V, 3V, 4V, 5V, and 6V are applied to the first ring electrodes 102 of the three first electrode groups, and potentials of 0V, 0.25V, and 0.5V are applied to the second ring electrodes 105. The potential difference between the first ring electrodes 102 and the second ring electrodes 105 can be as follows: Figure 9 As shown, the closer the first electrode group is to the center, the greater the potential difference. The three first electrode groups from left to right in the figure correspond to (6V, 5V, 4V, 3V, 2V, 1V), (6V, 5.5V, 5V, 4.5V, 4V, 3.5V, 3V, 2.5V, 2V, 1.5V, 1V, 0.5V), and (6V, 5.75V, 5.5V, 5V, 4.75V, 4.5V, 4V, 3.75V, 3.5V, 3V, 2.75V, 2.5V, 2V, 1.75V, 1.5V, 1V, 0.75V, 0.5V). Furthermore, if one of the first annular electrodes 102 in the first electrode group closest to the center corresponds to four annular electrodes, a third driving voltage source 107 of 0.75V can be added to divide, for example, the 6V first annular electrode 102 into 6V, 5.75V, 5.5V, and 5.25V, corresponding to four more uniform voltage gradients. In this embodiment of the invention, the center is the center of the circle corresponding to each annular electrode.

[0048] In one specific embodiment, the potential applied by each first driving voltage source 103 to the corresponding first ring electrode 102 in the same first electrode group gradually increases along the first direction; the potential applied by each third driving voltage source 107 to the corresponding second ring electrode 105 in the same second ring electrode 105 group gradually decreases along the first direction.

[0049] Specific applications can be as follows: Figure 9 As shown.

[0050] By ensuring that the potential difference amplitude of the first annular electrode 102 changes in the same way, the second annular electrodes 105 in the second annular electrode group can be connected to the same third driving voltage source 107 in the same order from the inner side of the first direction, effectively reducing the number of driving voltage sources.

[0051] In one specific embodiment, when implementing three-dimensional display, each first ring electrode 102 and each second ring electrode 105 is connected to their respective preset potentials as follows:

[0052] The first ring electrode 102 is connected to the first potential, and the first potential corresponding to each first ring electrode 102 in the same first electrode group gradually increases along the first direction; the second ring electrode 105 is connected to the second potential, and the first potential corresponding to each first ring electrode 102 in the same second ring electrode 105 group gradually decreases along the first direction.

[0053] It should be noted that, in order to achieve 3D display, the liquid crystal molecules need to meet the molecular arrangement corresponding to the Fresnel lens, so the above-mentioned corresponding voltage is applied.

[0054] In one specific embodiment, when implementing a two-dimensional display, each first ring electrode 102 and each second ring electrode 105 is connected to their respective preset potentials as follows:

[0055] Each of the second ring electrodes 105 is connected to zero potential; the first ring electrode 102 is connected to a third potential, and all of the third potentials are the same potential.

[0056] In addition, in other embodiments, two-dimensional display can also be achieved without applying voltage. By aligning the liquid crystal molecules, the liquid crystal molecules can maintain the light transmittance performance required for two-dimensional display even without applying voltage.

[0057] In one specific embodiment, the number of first annular electrodes 102 in the first electrode group is greater than or equal to the minimum number of electrodes capable of forming a Fresnel liquid crystal lens morphology.

[0058] In one specific embodiment, the number of second annular electrodes 105 in the second annular electrode 105 group is set according to the required display accuracy.

[0059] The accuracy is related to the width of the area corresponding to the voltage difference; the smaller the width, the higher the accuracy. Therefore, in this embodiment of the invention, with the width of the first annular electrode 102 fixed, the display accuracy can be determined by setting the number of second annular electrodes 105.

[0060] In one specific embodiment, the first annular electrode 102 is arranged in layers, with adjacent first annular electrodes 102 located at different layers; the second annular electrode 105 is arranged in layers, with adjacent second annular electrodes 105 located at different layers. This can be as follows: Figure 1 As shown.

[0061] It should be noted that the hierarchical arrangement eliminates the need for insulators to be placed between adjacent electrodes on the same horizontal plane. This avoids the situation where the voltage difference corresponding to the insulator (which may be 0) is insufficient to achieve the required deflection of the liquid crystal molecules at that location, thus improving the display effect.

[0062] In this embodiment of the invention, a group of second ring electrodes 105 is disposed on the second substrate 104 corresponding to each of the first ring electrodes 102 on the first substrate 101. Each group of second ring electrodes 105 includes multiple second ring electrodes 105, and each group of second ring electrodes 105 is used to apply different bias voltages to create a gradual potential difference between the group of second ring electrodes 105 and the first ring electrodes 102. Compared to the prior art, where one first ring electrode 102 can only generate one potential difference, the closer to the center, the wider the electrode becomes due to the same number of potential levels, resulting in lower efficiency in fitting the ideal Fresnel lens morphology. In this embodiment of the invention, one first ring electrode 102 corresponds to multiple second ring electrodes 105 and can generate multiple potential differences. The closer the first ring electrode 102 is to the center, the more second ring electrodes 105 it corresponds to, and the more potential difference levels it generates, thus improving the efficiency in fitting the ideal Fresnel lens morphology, increasing the usable light efficiency, and enhancing the display effect. In this embodiment of the invention, the outermost second ring electrode 105 in each group of second ring electrodes 105 along the first direction is connected to the same second driving voltage source 106, and the second ring electrodes 105 in each group of second ring electrodes 105, starting from the inner side in the first direction, are connected to the same third driving voltage source 107. By connecting the second ring electrodes 105 in each group of second ring electrodes 105, starting from the inner side in the first direction, to the same third driving voltage source 107, compared to the prior art which directly increases the number of first ring electrodes 102, this embodiment of the invention can effectively reduce the number of driving voltage sources, thereby reducing the problem of reduced yield caused by an excessive number of hardware circuits such as driving chips. The number of second ring electrodes 105 in each group of second ring electrodes 105 in this embodiment of the invention is set according to the required display accuracy, thus adapting production to demand and avoiding resource waste. In this embodiment of the invention, the first ring electrodes 102 are arranged in layers, with adjacent first ring electrodes 102 located at different layers; the second ring electrodes 105 are also arranged in layers, with adjacent second ring electrodes 105 located at different layers. The hierarchical arrangement eliminates the need for insulators to be placed between adjacent electrodes on the same horizontal plane, thus improving the display effect.

[0063] In summary, the embodiments of the present invention can improve the efficiency of the ideal Fresnel lens morphology, improve the available light efficiency, and enhance the display effect without increasing the number of driving voltage sources. They also reduce the problem of reduced yield caused by an excessive number of hardware circuits such as driving chips.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0065] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0066] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A two-dimensional / three-dimensional switching display screen based on a liquid crystal lens, characterized in that, The display screen includes: A first substrate; a plurality of first electrode groups are disposed on the first substrate, each first electrode group including the same number of first ring electrodes, and the first ring electrodes are arranged in concentric rings; the first ring electrodes in the same order in each first electrode group are connected to the same first driving voltage source, the first ring electrodes in the same first electrode group have the same width, and the width of the first ring electrodes in different first electrode groups gradually decreases along a first direction; wherein, the first direction is the direction from the center of the first ring electrode outward. A second substrate is disposed opposite to the first substrate; a second ring electrode group is disposed on the second substrate in a region corresponding to each of the first ring electrodes on the first substrate; the second ring electrode group includes a plurality of second ring electrodes and each second ring electrode group is used to apply different bias voltages to form a gradual potential difference between the second ring electrode group and the first ring electrode; the outermost second ring electrode in each second ring electrode group along the first direction is connected to the same second driving voltage source, and the second ring electrodes in each second ring electrode group in the same order from the inner side of the first direction are connected to the same third driving voltage source; the number of second ring electrodes in the second ring electrode group in the same region corresponding to the first electrode group is the same, and the number of second ring electrodes in the second ring electrode group in different regions corresponding to the first electrode group gradually decreases along the first direction. A liquid crystal layer is disposed between the first substrate and the second substrate, and the liquid crystal layer is filled with liquid crystal molecules; the liquid crystal molecules are used to deflect after each of the first ring electrodes and each of the second ring electrodes is connected to their respective preset potentials to realize three-dimensional display and / or two-dimensional display. When no voltage is applied or an equal voltage is applied between the first electrode group and each of the second annular electrode groups, the display screen is in a two-dimensional display state; when a corresponding voltage is applied between the first electrode group and each of the second annular electrode groups, a Fresnel liquid crystal sub-lens is formed, and the display screen is in a three-dimensional display state. Specifically, in achieving three-dimensional display, the first and second ring electrodes are connected to their respective preset potentials as follows: the first ring electrode is connected to a first potential, and the first potential corresponding to each of the first ring electrodes within the same first electrode group gradually increases along a first direction; the second ring electrode is connected to a second potential, and the second potential corresponding to each of the second ring electrodes within the same second ring electrode group gradually decreases along the first direction. In achieving two-dimensional display, the first and second ring electrodes are connected to their respective preset potentials as follows: each of the second ring electrodes is connected to zero potential; the first ring electrode is connected to a third potential, and all of the third potentials are the same potential. The first annular electrode is arranged in layers, with adjacent first annular electrodes located at different layers; the second annular electrode is arranged in layers, with adjacent second annular electrodes located at different layers.

2. The two-dimensional / three-dimensional switching display screen based on a liquid crystal lens according to claim 1, characterized in that, The potential applied by each of the first driving voltage sources to the corresponding first ring electrode within the same first electrode group gradually increases along the first direction; the potential applied by each of the third driving voltage sources to the corresponding second ring electrode within the same second ring electrode group gradually decreases along the first direction.

3. The two-dimensional / three-dimensional switching display screen based on a liquid crystal lens according to claim 1, characterized in that, The number of the first annular electrodes in the first electrode group is greater than or equal to the minimum number of electrodes required to form a Fresnel liquid crystal lens morphology.

4. The two-dimensional / three-dimensional switching display screen based on a liquid crystal lens according to claim 1, characterized in that, The number of the second annular electrodes in the second annular electrode group is set according to the required display accuracy.

Images