Display device

Abstract

An embodiment of the present invention discloses a display device, which includes a display panel, a backlight module located on the backlight side of the display panel, a lens member located on the light-emitting side of the backlight module. At least when the display device is in a 3D display state, the lens member includes lens units, and each lens unit includes at least one lens. A slit member is located on the side of the lens member away from the backlight module. At least when the display device is in a 3D display state, the slit member includes slit units, and each slit unit includes at least one slit. When the display device is in a 3D display state, the lens units and the slit units are arranged in one-to-one correspondence. The light from the backlight module is converged by the lens units and then emitted from the slit units. By arranging the lens units and the slit units in one-to-one correspondence, the present invention converges the light from the backlight module and emits it from the slits, reducing the loss of the display brightness of the display device while realizing 3D display and improving the display quality of the display device during 3D display.

Description

Technical Field

[0001] The present invention relates to the field of displays, and particularly to a display device. Background Art

[0002] Currently, with the development of the information society, more and more requirements are put forward for display devices used to display images in various ways, and more and more new display technologies are developed. Among them, 3D (Three Dimension) display technology has attracted wide attention for its characteristics such as strong visual impact and high visual enjoyment. Existing 3D display devices form different images in the left and right eyes of people to make people's eyes have a stereoscopic sense, but there are problems of low display brightness and poor 3D imaging quality.

[0003] Therefore, there is an urgent need for a display device to solve the above technical problems. Summary of the Invention

[0004] The present invention provides a display device, which can alleviate the technical problems of low display brightness and poor 3D imaging quality of current 3D display devices.

[0005] The present invention provides a display device, comprising:

[0006] A display panel, including a plurality of pixels distributed in an array;

[0007] A backlight module, located on the backlight side of the display panel;

[0008] A lens member, located on the light-emitting side of the backlight module. At least when the display device is in a three-dimensional display state, the lens member includes a plurality of lens units, and one lens unit includes at least one lens;

[0009] A slit member, located on the side of the lens member away from the backlight module. At least when the display device is in the three-dimensional display state, the slit member includes a plurality of slit units, and one slit unit includes at least one slit;

[0010] Wherein, when the display device is in the three-dimensional display state, the lens units and the slit units are arranged in one-to-one correspondence, and the light from the backlight module is converged by the lenses and then exits from the slit units.

[0011] Preferably, the slit member includes a first liquid crystal layer, a first electrode layer located on the side of the first liquid crystal layer close to the lens member, and a second electrode layer located on the side of the first liquid crystal layer away from the lens member;

[0012] Wherein, the first electrode layer includes a first electrode, the second electrode layer includes a second electrode, and the first electrode and the second electrode control the first liquid crystal layer to form the slit.

[0013] Preferably, the lens member includes a first lens layer, the first lens layer includes a second liquid crystal layer, a third electrode layer on a side of the second liquid crystal layer close to the backlight module, and a fourth electrode layer on a side of the second liquid crystal layer away from the backlight module;

[0014] Wherein, the lens includes a first sub-lens, the third electrode layer includes a third electrode, the fourth electrode layer includes a fourth electrode, and the third electrode and the fourth electrode control the second liquid crystal layer to form the first sub-lens.

[0015] Preferably, the lens member further includes a second lens layer on a side of the first lens layer away from the backlight module, the second lens layer includes a third liquid crystal layer, a fifth electrode layer on a side of the third liquid crystal layer close to the backlight module, and a sixth electrode layer on a side of the third liquid crystal layer away from the backlight module;

[0016] Wherein, the lens further includes a second sub-lens, the fifth electrode layer includes a fifth electrode, the sixth electrode layer includes a sixth electrode, and the fifth electrode and the sixth electrode control the third liquid crystal layer to form the second sub-lens;

[0017] The first sub-lens and the second sub-lens are arranged in one-to-one correspondence.

[0018] Preferably, the first sub-lens is a Fresnel lens.

[0019] Preferably, the slit unit includes a first slit sub-unit and a second slit sub-unit arranged alternately along the arrangement direction of the slit unit, and the lens unit includes a first lens sub-unit and a second lens sub-unit arranged alternately along the arrangement direction of the lens unit;

[0020] The first slit sub-unit and the first lens sub-unit are arranged in one-to-one correspondence, and the second slit sub-unit and the second lens sub-unit are arranged in one-to-one correspondence;

[0021] Wherein, the display device includes a first driving period and a second driving period. In the first driving period, the light from the backlight module is converged by the first lens sub-unit and then exits from the first slit sub-unit; in the second driving period, the light from the backlight module is converged by the second lens sub-unit and then exits from the second slit sub-unit.

[0022] Preferably, the plurality of pixels distributed in an array include a plurality of pixel columns arranged along a first direction and a plurality of pixel rows arranged along a second direction;

[0023] Wherein, the extending direction of the lens and the extending direction of the slit are respectively parallel to the first direction, and the arranging direction of the lenses and the arranging direction of the slits are respectively parallel to the second direction.

[0024] Preferably, each pixel row includes a plurality of pixel units, and one pixel unit includes at least one pixel.

[0025] Wherein, the pixel units and the lens units are arranged in one-to-one correspondence, and the pixel units and the slit units are arranged in one-to-one correspondence.

[0026] Preferably, the lens member is located between the backlight module and the display panel, and the slit member is located between the lens member and the display panel.

[0027] Preferably, the slits and the lenses are arranged in one-to-one correspondence.

[0028] Preferably, along the arranging direction of the lens units, the number of the lenses in the lens units first decreases and then increases.

[0029] By arranging the lens units and the slit units in one-to-one correspondence, the present invention converges the light from the backlight module and emits the light from the slits. While realizing 3D display, the loss of the display brightness of the display device is reduced, and the display quality of the display device during 3D display is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 is the first schematic structural diagram of the display device provided by the embodiment of the present invention;

[0032] Figure 2 is Figure 1 the enlarged schematic diagram of area A in

[0033] Figure 3 is the first schematic structural diagram of the lens member provided by the embodiment of the present invention;

[0034] Figure 4 is the second schematic structural diagram of the lens member provided by the embodiment of the present invention;

[0035] Figure 5 is the third schematic structural diagram of the lens member provided by the embodiment of the present invention;

[0036] Figure 6 It is a schematic structural diagram of the display device provided by an embodiment of the present invention in the first driving cycle;

[0037] Figure 7 It is a schematic structural diagram of the display device provided by an embodiment of the present invention in the second driving cycle. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise stated, the orientation words such as "upper" and "lower" usually refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" are in terms of the outline of the device.

[0039] Currently, existing 3D display devices have problems of low display brightness and poor 3D imaging quality.

[0040] Please refer to Figures 1 to 7 , an embodiment of the present invention provides a display device 10, including:

[0041] A display panel 100, including a plurality of pixels 111 distributed in an array;

[0042] A backlight module 200, located on the backlight side of the display panel 100;

[0043] A lens member 300, located on the light-emitting side of the backlight module 200. At least when the display device 10 is in a three-dimensional display state, the lens member 300 includes a plurality of lens units 310, and one lens unit 310 includes at least one lens 301;

[0044] A slit member 400, located on the side of the lens member 300 away from the backlight module 200. At least when the display device 10 is in the three-dimensional display state, the slit member 400 includes a plurality of slit units 410, and one slit unit 410 includes at least one slit 401;

[0045] Wherein, when the display device 10 is in the three-dimensional display state, the lens units 310 and the slit units 410 are arranged in one-to-one correspondence, and the light from the backlight module 200 is converged by the lens 301 and then emitted from the slit 401.

[0046] Through the one-to-one correspondence setting of the lens unit 310 and the slit unit 410, the present invention converges the light from the backlight module 200 and emits it from the slit. While realizing 3D display, the loss of the display brightness of the display device 10 is reduced, and the display quality of the display device 10 during 3D display is improved.

[0047] The technical solution of the present invention will be described below in conjunction with specific embodiments.

[0048] Please refer to Figure 1 and Figure 2 , in this embodiment, the type of the slit member 400 may be a film grating, a metal grating, a liquid crystal grating, or a grating formed by using a black color resist material, etc.

[0049] In some embodiments, the type of the slit member 400 is a liquid crystal grating, which is beneficial to improving the imaging quality of the display device 10 during 3D display.

[0050] Please refer to Figure 1 and Figure 2 , the slit member 400 includes a first liquid crystal layer 402, a first electrode layer 404 located on the side of the first liquid crystal layer 402 close to the lens member 300, and a second electrode layer 405 located on the side of the first liquid crystal layer 402 away from the lens member 300.

[0051] Among them, the first electrode layer 404 includes a first electrode, the second electrode layer 405 includes a second electrode, and the first electrode and the second electrode control the first liquid crystal layer 402 to form the slit 401.

[0052] The slit member 400 further includes a first substrate 406 and a second substrate 407 respectively located on opposite sides of the first liquid crystal layer 402. The first electrode layer 404 is located on the side of the first substrate 406 close to the first liquid crystal layer 402, or the first electrode layer 404 is located on the side of the first substrate 406 away from the first liquid crystal layer 402; the second electrode layer 405 is located on the side of the second substrate 407 close to the first liquid crystal layer 402, or the second electrode layer 405 is located on the side of the second substrate 407 away from the first liquid crystal layer 402.

[0053] The slit member 400 further includes a first polarizer layer 408 and a second polarizer layer 409 respectively located on opposite sides of the first liquid crystal layer 402. The first polarizer layer 408 has a first transmission axis, and the second polarizer layer 409 has a second transmission axis. The first polarizer layer 408 is located on the side of the first substrate 406 close to the first liquid crystal layer 402, or the first polarizer layer 408 is located on the side of the first substrate 406 away from the first liquid crystal layer 402; the first polarizer layer 408 can be on the same side of the first substrate 406 as the first electrode layer 404, or the first polarizer layer 408 can be on the same side of the first substrate 406 as the first electrode layer 404; when the first polarizer layer 408 and the first electrode layer 404 are on the same side of the first substrate 406, the first polarizer layer 408 is located on the side of the first electrode layer 404 close to the first substrate 406, or the first polarizer layer 408 is located on the side of the first electrode layer 404 away from the first substrate 406. The second polarizer layer 409 is located on the side of the second substrate 407 close to the first liquid crystal layer 402, or the second polarizer layer 409 is located on the side of the second substrate 407 away from the first liquid crystal layer 402; the second polarizer layer 409 can be on the same side of the second substrate 407 as the second electrode layer 405, or the second polarizer layer 409 can be on the same side of the second substrate 407 as the second electrode layer 405; when the second polarizer layer 409 and the second electrode layer 405 are on the same side of the second substrate 407, the second polarizer layer 409 is located on the side of the second electrode layer 405 close to the second substrate 407, or the second polarizer layer 409 is located on the side of the second electrode layer 405 away from the second substrate 407.

[0054] When the display device 10 is in a three-dimensional display state, the first liquid crystal layer 402 forms a first light-shielding region T1 and a first light-transmitting region T2 under the control of the first electrode and the second electrode. The first light-shielding region T1 and the first light-transmitting region T2 are alternately arranged, so that the first light-transmitting region T2 forms the slit 401. Specifically, the extending direction of the first light-transmitting axis of the first polarizer layer 408 is parallel to the extending direction of the second light-transmitting axis of the second polarizer layer 409. The first liquid crystal layer 402 includes a first liquid crystal 403. When the display device 10 is in a three-dimensional display state, the long axis of the first liquid crystal 403 in the first light-transmitting region T2 is perpendicular to the first substrate 406 or the second substrate 407. At this time, the first liquid crystal 403 does not change the direction of the polarized light of the light-transmitting axis from the first polarizer layer 408, and the light from the backlight module 200 is emitted after passing through the first polarizer layer 408, the first liquid crystal 403 in the first light-shielding region T1, and the second polarizer layer 409; the long axis of the first liquid crystal 403 in the first light-shielding region T1 is parallel to the first substrate 406 or the second substrate 407, and the first liquid crystal 403 changes the direction of the polarized light of the light-transmitting axis from the first polarizer layer 408. The light from the backlight module 200 changes the polarization direction after passing through the first polarizer layer 408 and the first liquid crystal 403 in the first light-shielding region T1, so that it cannot be emitted from the second polarizer layer 409.

[0055] The first electrode may be a first common electrode, and the second electrode may be a first driving electrode; alternatively, the first electrode may be a first driving electrode, and the second electrode may be a first common electrode. The first common electrode may be provided as a whole layer, and the first driving electrode may be provided corresponding to the first light-shielding region T1 or the first light-transmitting region T2. When the first driving electrode is provided corresponding to the first light-transmitting region T2, when the display device 10 is in the 3D display state, the first liquid crystal 403 in the first light-transmitting region T2 deflects under the control of the first common electrode and the first driving electrode, so that the major axis of the first liquid crystal 403 molecules in the first light-transmitting region T2 is perpendicular to the first substrate 406 or the second substrate 407; there is no first driving electrode provided corresponding to the first light-shielding region T1, and the major axis of the first liquid crystal 403 in the first light-shielding region T1 remains parallel to the first substrate 406 or the second substrate 407; when the first driving electrode is provided corresponding to the first light-shielding region T1, when the display device 10 is in the 3D display state, the first liquid crystal 403 in the first light-shielding region T1 deflects under the control of the first common electrode and the first driving electrode, so that the major axis of the first liquid crystal 403 in the first light-shielding region T1 is parallel to the first substrate 406 or the second substrate 407; there is no first driving electrode provided corresponding to the first light-transmitting region T2, and therefore, the major axis of the first liquid crystal 403 in the first light-transmitting region T2 remains perpendicular to the first substrate 406 or the second substrate 407.

[0056] When the display device 10 is in the second state, the display device 10 is in the 2D display state. The major axes of the first liquid crystal 403 in the first light-shielding region T1 and the first liquid crystal 403 in the first light-transmitting region T2 are both perpendicular to the first substrate 406 or the second substrate 407. The polarized light formed by the light emitted by the backlight module 200 passing through the first polarizer layer 408 does not change the polarization direction after passing through the first liquid crystal 403, and therefore, it is emitted from the second polarizer layer 409, which is beneficial to ensuring the brightness of the display device 10 in the 2D display state.

[0057] When the display device 10 is in the second state, if the first driving electrode is disposed corresponding to the first light-transmitting region T2, the first liquid crystal 403 in the first light-transmitting region T2 deflects under the control of the first common electrode and the first driving electrode, so that the major axis of the first liquid crystal 403 in the first light-transmitting region T2 is perpendicular to the first substrate 406 or the second substrate 407; the display device 10 further includes a second driving electrode, the second driving electrode is disposed corresponding to the first light-shielding region T1, and the first liquid crystal 403 in the first light-shielding region T1 deflects under the control of the first common electrode and the second driving electrode, so that the major axis of the first liquid crystal 403 in the first light-shielding region T1 is perpendicular to the first substrate 406 or the second substrate 407. The second driving electrode may be disposed on the same layer as the first driving electrode, and the first driving electrode, the second driving electrode, and the first common electrode are all transparent electrodes, and the materials of the three may be the same. For example, they may all be transparent indium tin oxide materials.

[0058] When the display device 10 is in the second state, if the first driving electrode is disposed corresponding to the first light-shielding region T1, no driving voltage is applied between the first common electrode and the first driving electrode for the first liquid crystal 403 in the first light-shielding region T1, so that the major axis of the first liquid crystal 403 in the first light-shielding region T1 returns to a perpendicular state with respect to the first substrate 406 or the second substrate 407; there is no first driving electrode disposed corresponding to the first light-transmitting region T2, so the major axis of the first liquid crystal 403 in the first light-transmitting region T2 remains perpendicular to the first substrate 406 or the second substrate 407, that is, the slit member 400 maintains the front emission of the light from the backlight module 200 when no driving voltage is applied between the first driving electrode and the first common electrode, which is beneficial to reducing the power consumption of the display device 10 and improving the display brightness of the backlight module 200.

[0059] In some embodiments, the material of the lens 301 may include acrylic material or other polymer materials. At this time, the type of the lens 301 may be a traditional optical lens (such as: convex lens, etc.), a Fresnel lens, etc. The type of the lens 301 may also be a liquid crystal lens, or a composite type lens formed by compounding a liquid crystal lens and a traditional optical lens.

[0060] Please refer to Figures 3 to 7 , in some embodiments, the type of the lens member 300 is a liquid crystal lens, which is beneficial to improving the brightness of the display device 10 during 3D display.

[0061] Please refer to Figure 3, the lens member 300 includes a first lens layer, and the first lens layer includes a second liquid crystal layer 302a, a third electrode layer 304a located on a side of the second liquid crystal layer 302a close to the backlight module 200, and a fourth electrode layer 305a located on a side of the second liquid crystal layer 302a away from the backlight module 200.

[0062] Wherein, the lens 301 includes a first sub-lens, the third electrode layer 304a includes a third electrode, the fourth electrode layer 305a includes a fourth electrode, and the third electrode and the fourth electrode control the second liquid crystal layer 302a to form the first sub-lens.

[0063] Please refer to Figure 3 , the lens member 300 further includes a third substrate 306 and a fourth substrate 307 located on opposite sides of the second liquid crystal layer 302a. The third electrode layer 304a is located on a side of the third substrate 306 close to the second liquid crystal layer 302a, or the third electrode layer 304a is located on a side of the third substrate 306 away from the second liquid crystal layer 302a; the fourth electrode layer 305a is located on a side of the fourth substrate 307 close to the second liquid crystal layer 302a, or the fourth electrode layer 305a is located on a side of the fourth substrate 307 away from the second liquid crystal layer 302a.

[0064] Please refer to Figure 3, the lens member 300 further includes a third polarizer layer 308 and a fourth polarizer layer 309 respectively located on opposite sides of the second liquid crystal layer 302a. The third polarizer layer 308 has a third transmission axis, and the fourth polarizer layer has a fourth transmission axis. The third polarizer layer 308 is located on the side of the third substrate 306 close to the second liquid crystal layer 302a, or the third polarizer layer 308 is located on the side of the third substrate 306 away from the second liquid crystal layer 302a; the third polarizer layer 308 can be on the same side of the third substrate 306 as the third electrode layer 304a, or the third polarizer layer 308 can be on the same side of the third substrate 306 as the third electrode layer 304a; when the third polarizer layer 308 and the third electrode layer 304a are on the same side of the third substrate 306, the third polarizer layer 308 is located on the side of the third electrode layer 304a close to the third substrate 306, or the third polarizer layer 308 is located on the side of the third electrode layer 304a away from the third substrate 306. The fourth polarizer layer 309 is located on the side of the fourth substrate 307 close to the second liquid crystal layer 302a, or the fourth polarizer layer 309 is located on the side of the fourth substrate 307 away from the second liquid crystal layer 302a; the fourth polarizer layer 309 can be on the same side of the fourth substrate 307 as the fourth electrode layer 305a, or the fourth polarizer layer 309 can be on the same side of the fourth substrate 307 as the fourth electrode layer 305a; when the fourth polarizer layer 309 and the fourth electrode layer 305a are on the same side of the fourth substrate 307, the fourth polarizer layer 309 is located on the side of the fourth electrode layer 305a close to the fourth substrate 307, or the fourth polarizer layer 309 is located on the side of the fourth electrode layer 305a away from the fourth substrate 307.

[0065] When the display device 10 is in a 3D display state, the second liquid crystal layer 302a forms a second light-shielding region T3 and a second light-transmitting region T4 under the control of the third electrode and the fourth electrode. The second light-shielding region T3 and the second light-transmitting region T4 are alternately arranged, so that the second light-transmitting region T4 forms the first sub-lens. Specifically, the extending direction of the third light-transmitting axis of the third polarizer layer 308 is perpendicular to the extending direction of the fourth light-transmitting axis of the fourth polarizer layer 309. The second liquid crystal layer 302a includes a second liquid crystal 303a. When the display device 10 is in a 3D display state, the major axis of the second liquid crystal 303a in the second light-shielding region T3 is perpendicular to the third substrate 306 or the fourth substrate 307. At this time, the second liquid crystal 303a does not change the polarization direction of the polarized light from the light-transmitting axis of the third polarizer layer 308, and the light from the backlight module 200 cannot exit from the fourth polarizer layer 309 after passing through the third polarizer layer 308 and the second liquid crystal 303a in the second light-shielding region T3; the major axis of the second liquid crystal 303a in the second light-transmitting region T4 is not perpendicular to the third substrate 306 or the fourth substrate 307, and the second liquid crystal 303a changes the polarization direction of the polarized light from the light-transmitting axis of the third polarizer layer 308. After the light from the backlight module 200 passes through the third polarizer layer 308 and the second liquid crystal 303a in the second light-transmitting region T4, the polarization direction is changed and after passing through the second liquid crystal 303a in the second light-transmitting region T4, the light from the backlight module 200 converges and exits from the fourth polarizer layer 309 to the slit member 400.

[0066] When the type of the slit member 400 is a liquid crystal grating, if the lens member 300 only includes the first lens layer, the extending direction of the first light-transmitting axis of the first polarizer layer 408 is parallel to the extending direction of the fourth light-transmitting axis of the fourth polarizer layer 309, so that the light converged by the first sub-lens can pass through the first polarizer layer 408.

[0067] The third electrode may be a second common electrode, and the fourth electrode may be a third driving electrode; alternatively, the third electrode may be a third driving electrode, and the fourth electrode may be a second common electrode. The second common electrode may be provided in a whole layer, and the third driving electrode may be provided corresponding to the second light-shielding region T3 or the second light-transmitting region T4. When the third driving electrode is provided corresponding to the second light-transmitting region T4, when the display device 10 is in the 3D display state, the second liquid crystal 303a in the second light-transmitting region T4 deflects under the control of the second common electrode and the third driving electrode, so that the major axis of the second liquid crystal 303a in the second light-transmitting region T4 is not perpendicular to the third substrate 306 or the fourth substrate 307; there is no corresponding third driving electrode provided in the second light-shielding region T3, and the major axis of the second liquid crystal 303a in the second light-shielding region T3 remains perpendicular to the third substrate 306 or the fourth substrate 307; when the third driving electrode is provided corresponding to the second light-shielding region T3, when the display device 10 is in the 3D display state, the second liquid crystal 303a in the second light-shielding region T3 deflects under the control of the second common electrode and the third driving electrode, so that the major axis of the second liquid crystal 303a molecules in the second light-shielding region T3 is perpendicular to the third substrate 306 or the fourth substrate 307; there is no corresponding third driving electrode provided in the second light-transmitting region T4, and therefore, the major axis of the second liquid crystal 303a in the second light-transmitting region T4 remains in a non-perpendicular state to the third substrate 306 or the fourth substrate 307.

[0068] When the display device 10 is in the second state, the display device 10 is in the 2D display state, and the major axis of the second liquid crystal 303a in the second light-transmitting region T4 remains in a non-perpendicular state to the third substrate 306 or the fourth substrate 307 to converge the light from the backlight module 200 toward the slit member 400, which is beneficial to improving the brightness of the display device 10 in the 2D display state; alternatively, the major axes of the second liquid crystals 303a in the second light-transmitting region T4 and the second light-shielding region T3 are parallel to the third substrate 306 or the fourth substrate 307, which is beneficial to allowing as much light from the backlight module 200 as possible to exit from the lens member 300 to the slit member 400, and improving the brightness of the display device 10 in the 2D display state.

[0069] Please refer to Figure 4, in some embodiments, the lens member 300 further includes a second lens layer on a side of the first lens layer away from the backlight module 200. The second lens layer includes a third liquid crystal layer 302b, a fifth electrode layer 304b on a side of the third liquid crystal layer 302b close to the backlight module 200, and a sixth electrode layer 305b on a side of the third liquid crystal layer 302b away from the backlight module 200.

[0070] Wherein, the lens 301 further includes a second sub-lens. The fifth electrode layer 304b includes a fifth electrode, and the sixth electrode layer 305b includes a sixth electrode. The fifth electrode and the sixth electrode control the third liquid crystal layer 302b to form the second sub-lens, and the first sub-lens and the second sub-lens are arranged in one-to-one correspondence. Through the one-to-one correspondence arrangement of the first sub-lens and the second sub-lens, it is beneficial to improve the converging effect of the lens member 300 on the light from the backlight module 200, enabling more light to pass through the slit member 400, which is beneficial to improving the display brightness of the display device 10 during 3D display.

[0071] The lens member 300 further includes a fifth substrate and a sixth substrate on opposite sides of the third liquid crystal layer 302b. The positions of the fifth substrate and the sixth substrate are not marked for easy understanding. The fifth electrode layer 304b is located on a side of the fifth substrate close to the third liquid crystal layer 302b, or the fifth electrode layer 304b is located on a side of the fifth substrate away from the third liquid crystal layer 302b; the sixth electrode layer 305b is located on a side of the sixth substrate close to the third liquid crystal layer 302b, or the sixth electrode layer 305b is located on a side of the sixth substrate away from the third liquid crystal layer 302b.

[0072] The lens member 300 further includes a fifth polarizer layer and a sixth polarizer layer respectively located on opposite sides of the third liquid crystal layer 302b. The fifth polarizer layer has a fifth light transmission axis, and the sixth polarizer layer has a sixth light transmission axis. The positions of the fifth polarizer layer and the sixth polarizer layer are not marked for easy understanding. The fifth polarizer layer is located on the side of the fifth substrate close to the third liquid crystal layer 302b, or the fifth polarizer layer is located on the side of the fifth substrate away from the third liquid crystal layer 302b; the fifth polarizer layer can be on the same side of the fifth substrate as the fifth electrode layer 304b, or the fifth polarizer layer can be on the same side of the fifth substrate as the fifth electrode layer 304b; when the fifth polarizer layer is on the same side of the fifth substrate as the fifth electrode layer 304b, the fifth polarizer layer is located on the side of the fifth electrode layer 304b close to the fifth substrate, or the fifth polarizer layer is located on the side of the fifth electrode layer 304b away from the fifth substrate. The sixth polarizer layer is located on the side of the sixth substrate close to the third liquid crystal layer 302b, or the sixth polarizer layer is located on the side of the sixth substrate away from the third liquid crystal layer 302b; the sixth polarizer layer can be on the same side of the sixth substrate as the sixth electrode layer 305b, or the sixth polarizer layer can be on the same side of the sixth substrate as the sixth electrode layer 305b; when the sixth polarizer layer is on the same side of the sixth substrate as the sixth electrode layer 305b, the sixth polarizer layer is located on the side of the sixth electrode layer 305b close to the sixth substrate, or the sixth polarizer layer is located on the side of the sixth electrode layer 305b away from the sixth substrate.

[0073] Please refer to Figure 4, when the display device 10 is in a three-dimensional display state, the third liquid crystal layer 302b forms a third light-shielding region T5 and a third light-transmitting region T6 under the control of the fifth electrode and the sixth electrode. The third light-shielding region T5 and the third light-transmitting region T6 are alternately arranged, so that the third light-transmitting region T6 forms the second sub-lens. Specifically, the extending direction of the fifth light-transmission axis of the fifth polarizer layer is perpendicular to the extending direction of the sixth light-transmission axis of the sixth polarizer layer. The third liquid crystal layer 302b includes a third liquid crystal 303b. When the display device 10 is in a three-dimensional display state, the major axis of the third liquid crystal 303b in the third light-shielding region T5 is perpendicular to the fifth substrate or the sixth substrate. At this time, the third liquid crystal 303b does not change the direction of the polarized light of the light-transmission axis from the fifth polarizer layer, and the light from the first lens layer cannot exit from the sixth polarizer layer after passing through the fifth polarizer layer and the third liquid crystal 303b in the third light-shielding region T5; the major axis of the third liquid crystal 303b in the third light-transmitting region T6 is not perpendicular to the fifth substrate or the sixth substrate, and the third liquid crystal 303b changes the direction of the polarized light of the light-transmission axis from the fifth polarizer layer. After the light from the first lens layer passes through the fifth polarizer layer and the third liquid crystal 303b in the third light-transmitting region T6, the polarization direction is changed, and after passing through the third liquid crystal 303b in the third light-transmitting region T6, the light from the first lens layer is further converged and exits from the sixth polarizer layer to the slit member 400. The extending direction of the fourth light-transmission axis of the fourth polarizer layer 309 is parallel to the extending direction of the fifth light-transmission axis of the fifth polarizer layer, so that the light from the backlight module 200 is converged by the first sub-lens and then enters the second sub-lens for further convergence.

[0074] When the type of the slit member 400 is a liquid crystal grating, if the lens member 300 only includes the first lens layer and the second lens layer, the extending direction of the first light-transmission axis of the first polarizer layer 408 is parallel to the extending direction of the sixth light-transmission axis of the sixth polarizer layer, so that the light converged by the first sub-lens and the second sub-lens can pass through the first polarizer layer 408.

[0075] The fifth electrode may be the third common electrode, and the sixth electrode may be the fourth driving electrode; alternatively, the fifth electrode may be the fourth driving electrode, and the sixth electrode may be the third common electrode. The third common electrode may be disposed in an entire layer, and the fourth driving electrode may be disposed corresponding to the third light-shielding region T5 or the third light-transmitting region T6. When the fourth driving electrode is disposed corresponding to the third light-transmitting region T6, when the display device 10 is in the three-dimensional display state, the third liquid crystal 303b in the third light-transmitting region T6 deflects under the control of the third common electrode and the fourth driving electrode, so that the major axis of the third liquid crystal 303b in the third light-transmitting region T6 is not perpendicular to the fifth substrate or the sixth substrate; there is no fourth driving electrode disposed corresponding to the third light-shielding region T5, and the major axis of the third liquid crystal 303b in the third light-shielding region T5 remains perpendicular to the fifth substrate or the sixth substrate; when the fourth driving electrode is disposed corresponding to the third light-shielding region T5, when the display device 10 is in the three-dimensional display state, the third liquid crystal 303b in the third light-shielding region T5 deflects under the control of the third common electrode and the fourth driving electrode, so that the major axis of the third liquid crystal 303b in the third light-shielding region T5 is perpendicular to the fifth substrate or the sixth substrate; there is no fourth driving electrode disposed corresponding to the third light-transmitting region T6, and therefore, the major axis of the third liquid crystal 303b in the third light-transmitting region T6 remains in a non-perpendicular state to the fifth substrate or the sixth substrate.

[0076] When the display device 10 is in the second state, the display device 10 is in the 2D display state, and the major axis of the third liquid crystal 303b in the third light-transmitting region T6 remains in a non-perpendicular state to the fifth substrate or the sixth substrate to converge the light from the backlight module 200 toward the slit member 400, which is beneficial to improving the brightness of the display device 10 in the 2D display state; alternatively, the major axes of the third liquid crystals 303b in the third light-transmitting region T6 and the third light-shielding region T5 are parallel to the fifth substrate or the sixth substrate, which is beneficial to allowing as much light as possible from the backlight module 200 to exit from the lens member 300 to the slit member 400, and improving the brightness of the display device 10 in the 2D display state.

[0077] The lens 301 has a focal point, which is located on the principal optical axis of the lens 301. The principal optical axis of at least one of the lenses 301 within each lens unit 310 passes through the slit of the corresponding slit unit 410. Preferably, the focal point of at least one of the lenses 301 within each lens unit 310 is located within the slit 401 of the corresponding slit unit 410; more preferably, the principal optical axis of each of the lenses 301 within each lens unit 310 passes through the slit 401 of the corresponding slit unit 410. Most preferably, the focal point of each of the lenses 301 within each lens unit 310 is located within the slit 401 of the corresponding slit unit 410. Specifically, the first sub-lens has a first focal point, which is located on the first principal optical axis of the first sub-lens. When the display device 10 is in the 3D display state, the value of the first included angle formed by the major axis of the second liquid crystal 303a within the second light-transmitting region T4 and the third substrate 306 gradually increases in the direction away from the first principal optical axis. The first included angle is located on the side of the second liquid crystal 303a close to the first principal optical axis, and the major axis of the second liquid crystal 303a located on the first principal optical axis is parallel to the third substrate 306. When the lens 301 further includes the second sub-lens, the second sub-lens has a second focal point, which is located on the second principal optical axis of the second sub-lens. When the display device 10 is in the 3D display state, the value of the second included angle formed by the major axis of the third liquid crystal 303b within the third light-transmitting region T6 and the fifth substrate gradually increases in the direction away from the second principal optical axis. The second included angle is located on the side of the third liquid crystal 303b close to the second principal optical axis, and the major axis of the third liquid crystal 303b located on the second principal optical axis is parallel to the fifth substrate. When the display device 10 is in the 3D display state and the lens 301 only includes the first sub-lens, by the change of the first included angle formed by the second liquid crystal 303a on both sides of the first principal optical axis and the third substrate 306, the light from the backlight module 200 forms first outgoing direction light and second outgoing direction light after passing through the first sub-lens. After the first outgoing direction light and the second outgoing direction light pass through the slit member 400 and exit the display device 10, they respectively form a left-eye display image and a right-eye display image, thus forming a 3D display.Alternatively, when the display device 10 is in the three-dimensional display state, when the lens 301 only includes the first sub-lens and the second sub-lens, by changing the first angle formed by the second liquid crystal 303a and the third substrate 306 located on both sides of the first principal optical axis and the second angle formed by the third liquid crystal 303b and the fifth substrate located on both sides of the second principal optical axis, the light from the backlight module 200 passes through the first sub-lens and the second sub-lens to form the first outgoing direction light and the second outgoing direction light. After the first outgoing direction light and the second outgoing direction light pass through the slit member 400 and exit the display device 10, a left-eye display image and a right-eye display image are respectively formed, thereby forming a 3D display.

[0078] Please refer to Figure 5 , in some embodiments, the first sub-lens may be a liquid crystal Fresnel lens. When the first sub-lens is a liquid crystal Fresnel lens, each of the second light-transmitting regions T4 includes an alternately arranged first brightness region and a second brightness region. The major axis of the second liquid crystal 303a in the first brightness region is parallel to the third substrate 306, and the major axis of the second liquid crystal 303a in the second brightness region is neither perpendicular nor parallel to the third substrate 306. By setting the first sub-lens as a liquid crystal Fresnel lens, it is beneficial to enhance the light transmittance of the backlight module 200 and further improve the display brightness of the display device 10 during 3D display.

[0079] In some embodiments, the type of the slit member 400 is a liquid crystal grating, and the type of the lens member 300 is a liquid crystal lens, which is beneficial to improving the display quality and display brightness of the display device 10 during 3D display while realizing the switching between 2D display and 3D display. When the type of the slit member 400 is a liquid crystal grating and the type of the lens member 300 is a liquid crystal lens, the thickness of the slit member 400 may be 0.1 micrometer to 10 micrometers, which is beneficial to ensuring the 3D display effect of the display device 10 while minimizing the thickness of the display device 10.

[0080] Please refer to Figure 6 and Figure 7, in some embodiments, the slit unit 410 includes a first slit sub-unit 411 and a second slit sub-unit 412 that are alternately arranged along the arrangement direction of the slit unit 410, and the lens unit 310 includes a first lens sub-unit 311 and a second lens sub-unit 312 that are alternately arranged along the arrangement direction of the lens unit 310. The first slit sub-unit 411 and the first lens sub-unit 311 are arranged in one-to-one correspondence, and the second slit sub-unit 412 and the second lens sub-unit 312 are arranged in one-to-one correspondence. Wherein, the display device 10 includes a first driving period and a second driving period. During the first driving period, the light from the backlight module 200 is converged by the first lens sub-unit 311 and then exits from the first slit sub-unit 411; during the second driving period, the light from the backlight module 200 is converged by the second lens sub-unit 312 and then exits from the second slit sub-unit 412. Through the settings of the first driving period and the second driving period, the display device 10 displays different pictures during the first driving period and the second driving period respectively, so as to achieve the effect of 3D display.

[0081] In some embodiments, the plurality of pixels 111 distributed in an array include a plurality of pixel columns arranged along a first direction and a plurality of pixel rows arranged along a second direction. Wherein, the extending directions of the lens 301 and the slit 401 are respectively parallel to the first direction, and the arrangement directions of the lens 301 and the slit 401 are respectively parallel to the second direction.

[0082] In some embodiments, each pixel row includes a plurality of pixel units, and one pixel unit includes at least one pixel 111. Wherein, the pixel units and the lens unit 310 are arranged in one-to-one correspondence, and the pixel units and the slit unit 410 are arranged in one-to-one correspondence.

[0083] The pixels 111 in the same column correspond to the same lens unit 310, and the pixels 111 in the same column correspond to the same slit unit 410.

[0084] In some embodiments, the width of one slit 401 is greater than or equal to the sum of the widths of two pixels 111 arranged along the second direction, so as to facilitate the implementation of the slit 401 in terms of technology and improve the product yield of the display device 10. Correspondingly, the width of one lens unit 310 is greater than or equal to the sum of the widths of two pixels 111 arranged along the second direction.

[0085] In some embodiments, the width of a slit 401 is greater than or equal to 10 micrometers and less than or equal to 1 millimeter, and the spacing between adjacent slits 401 is greater than or equal to 10 micrometers and less than or equal to 1 millimeter. For example, the spacing between adjacent slits 401 can be 250 micrometers, 500 micrometers, etc.

[0086] In some embodiments, the slits 401 and the lenses 301 are arranged in one-to-one correspondence. That is, the number of slits 401 in a slit unit 410 is the same as the number of lenses 301 in the lens unit 310 corresponding to the slit unit 410, which is beneficial to maximizing the light exit rate of the backlight module 200 through the lens unit 310 and the slit unit 410 and enhancing the brightness of the display device 10 during 3D display.

[0087] In some embodiments, along the arrangement direction of the lens unit 310, the number of lenses 301 in the lens unit 310 first decreases and then increases. The display device 10 includes a central display area and a peripheral display area surrounding the central display area. Since, for the same user observing the display device 10, the viewing angles of the light from the central display area and the light from the peripheral display area are different, and the light from the peripheral display area requires a larger viewing angle, the number of lenses 301 in the lens unit 310 located in the peripheral display area is greater than the number of lenses 301 in the central display area. The number of slits 401 in the slit unit 410 can remain unchanged in the central display area and the peripheral display area. Correspondingly, the ratio of the number of lenses 301 in the lens unit 310 located in the peripheral display area to the number of slits 401 in the corresponding slit unit 410 is greater than the ratio of the number of lenses 301 in the lens unit 310 located in the central display area to the number of slits 401 in the corresponding slit unit 410.

[0088] The type of the backlight module 200 can be a collimated backlight module or a non-collimated backlight module. When the type of the backlight module 200 is a non-collimated backlight module, the number of lenses 301 in a light-transmitting unit is greater than the number of slits 401 in the corresponding slit unit 410, so as to improve the viewing angle of the display device 10.

[0089] In some embodiments, the lens member 300 is located between the backlight module 200 and the display panel 100, or the lens member 300 is located on the side of the display panel 100 away from the backlight module 200. The slit member 400 is located between the lens member 300 and the display panel 100, or the slit member 400 is located on the side of the display panel 100 away from the backlight module 200. Preferably, the lens member 300 is located between the backlight module 200 and the display panel 100, and the slit member 400 is located between the lens member 300 and the display panel 100, which helps to prevent the slit member 400, the lens member 300, etc. from being observed, or problems such as crosstalk and moiré that may exist in the slit member 400 or the lens member 300 from being observed, thus affecting the usage quality of the display device 10.

[0090] In the embodiments of the present invention, through the one-to-one correspondence between the lens unit 310 and the slit unit 410, the light from the backlight module 200 is converged and then emitted from the slit 401, reducing the loss of the display brightness of the display device 10 while achieving 3D display, and improving the display quality of the display device 10 during 3D display.

[0091] The embodiments of the present invention disclose a display device, which includes a display panel, a backlight module located on the backlight side of the display panel, a lens member located on the light-emitting side of the backlight module. At least when the display device is in a 3D display state, the lens member includes a lens unit, and the lens unit includes at least one lens. A slit member is located on the side of the lens member away from the backlight module. At least when the display device is in a 3D display state, the slit member includes a slit unit, and the slit unit includes at least one slit. When the display device is in a 3D display state, the lens unit and the slit unit are arranged in one-to-one correspondence, and the light from the backlight module is converged by the lens unit and then emitted from the slit unit. Through the one-to-one correspondence between the lens unit and the slit unit, the present invention converges the light from the backlight module and emits it from the slit, reducing the loss of the display brightness of the display device while achieving 3D display, and improving the display quality of the display device during 3D display.

[0092] The above has introduced in detail a display device provided by the embodiments of the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A display device, characterized in that, Comprising: A display panel, including a plurality of pixels distributed in an array; A backlight module, located on the backlight side of the display panel; A lens member, located on the light-emitting side of the backlight module. At least when the display device is in a 3D display state, the lens member includes a plurality of lens units, and one lens unit includes at least one lens; A slit member, located on the side of the lens member away from the backlight module. At least when the display device is in the 3D display state, the slit member includes a plurality of slit units, and one slit unit includes at least one slit; Wherein, when the display device is in the 3D display state, the lens units and the slit units are arranged in one-to-one correspondence, and the light from the backlight module is converged by the lenses and then emitted from the slits; Wherein, the lens member includes a first lens layer, the first lens layer includes a second liquid crystal layer, a third electrode layer located on the side of the second liquid crystal layer close to the backlight module, and a fourth electrode layer located on the side of the second liquid crystal layer away from the backlight module. The lens includes a first sub-lens, the third electrode layer includes a third electrode, the fourth electrode layer includes a fourth electrode, and the third electrode and the fourth electrode control the second liquid crystal layer to form the first sub-lens; The lens member further includes a second lens layer located on the side of the first lens layer away from the backlight module. The second lens layer includes a third liquid crystal layer, a fifth electrode layer located on the side of the third liquid crystal layer close to the backlight module, and a sixth electrode layer located on the side of the third liquid crystal layer away from the backlight module. The lens further includes a second sub-lens, the fifth electrode layer includes a fifth electrode, the sixth electrode layer includes a sixth electrode, and the fifth electrode and the sixth electrode control the third liquid crystal layer to form the second sub-lens; Both the first lens layer and the second lens layer are adapted to converge light to jointly converge the light from the backlight module.

2. The display device according to claim 1, wherein The slit member includes a first liquid crystal layer, a first electrode layer located on the side of the first liquid crystal layer close to the lens member, and a second electrode layer located on the side of the first liquid crystal layer away from the lens member; Wherein, the first electrode layer includes a first electrode, the second electrode layer includes a second electrode, and the first electrode and the second electrode control the first liquid crystal layer to form the slit; 3. The display device according to claim 1, wherein The first sub-lenses and the second sub-lenses are arranged in one-to-one correspondence.

4. The display device according to claim 1, wherein The first sub-lens is a liquid crystal Fresnel lens.

5. The display device according to claim 1, wherein The slit unit includes a first slit sub-unit and a second slit sub-unit arranged alternately along the arrangement direction of the slit unit, and the lens unit includes a first lens sub-unit and a second lens sub-unit arranged alternately along the arrangement direction of the lens unit; The first slit sub-unit and the first lens sub-unit are arranged in one-to-one correspondence, and the second slit sub-unit and the second lens sub-unit are arranged in one-to-one correspondence; Wherein, the display device includes a first driving period and a second driving period. During the first driving period, the light from the backlight module is converged by the first lens sub-units and then emitted from the first slit sub-units; During the second driving period, the light from the backlight module is converged by the second lens sub-unit and then exits from the second slit sub-unit.

6. The display device according to claim 1, characterized in that The plurality of pixels distributed in an array include a plurality of pixel columns arranged in a first direction and a plurality of pixel rows arranged in a second direction; Wherein, the extending direction of the lens and the extending direction of the slit are respectively parallel to the first direction, and the arranging direction of the lenses and the arranging direction of the slits are respectively parallel to the second direction.

7. The display device according to claim 6, wherein Each pixel row includes a plurality of pixel units, and a pixel unit includes at least one pixel; Wherein, the pixel units and the lens units are arranged in one-to-one correspondence, and the pixel units and the slit units are arranged in one-to-one correspondence.

8. The display device according to claim 6, wherein The lens member is located between the backlight module and the display panel, and the slit member is located between the lens member and the display panel.

9. The display device according to claim 6, wherein The slits and the lenses are arranged in one-to-one correspondence.

10. The display device according to claim 6, wherein Along the arranging direction of the lens units, the number of the lenses in the lens units first decreases and then increases.

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