CN115933216A

CN115933216A - display device

Info

Publication number: CN115933216A
Application number: CN202211601324.1A
Authority: CN
Inventors: 请求不公布姓名; 张晶; 姚江波; 王添鸿
Original assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-04-07

Abstract

The embodiment of the invention discloses a display device, which comprises a display panel, a backlight module positioned at the backlight side of the display panel, and a lens component positioned at the light-emitting side of the backlight module, wherein at least when the display device is in a three-dimensional display state, the lens component comprises a lens unit, the lens unit comprises at least one lens, a slit component positioned at one side of the lens component far away from the backlight module, at least when the display device is in the three-dimensional display state, the slit component comprises a slit unit, the slit unit comprises at least one slit, when the display device is in the three-dimensional display state, the lens unit and the slit unit are arranged in a one-to-one correspondence mode, and light from the backlight module is emitted from the slit unit after being converged by the lens unit. According to the invention, the lens units and the slit units are arranged in a one-to-one correspondence manner, so that light from the backlight module is emitted from the slit after being converged, the loss of the display brightness of the display device is reduced while 3D display is realized, and the display quality of the display device during 3D display is improved.

Description

Display device

Technical Field

The invention relates to the field of display, in particular to a display device.

Background

Currently, with the development of the information society, more and more demands are made on display devices for displaying images in various ways, and more new display technologies are developed, among which 3D (Three dimensional) display technologies are widely spotlighted in terms of their characteristics that can give strong visual impact and high visual enjoyment to people. The existing 3D display device forms different images on the left eye and the right eye of a person to enable the eyes of the person to generate stereoscopic impression, and has the problems of low display brightness and poor 3D imaging quality.

Therefore, a display device is needed to solve the above technical problems.

Disclosure of Invention

The invention provides a display device which can solve the technical problems that the existing 3D display device is low in display brightness and poor in 3D imaging quality.

The present invention provides a display device including:

the display panel comprises a plurality of pixels distributed in an array;

the backlight module is positioned on the backlight side of the display panel;

the lens component is positioned on the light-emitting side of the backlight module, and at least when the display device is in a three-dimensional display state, the lens component comprises a plurality of lens units, and one lens unit comprises at least one lens;

the slit component is positioned on one side of the lens component, which is far away from the backlight module, and at least when the display device is in the three-dimensional display state, the slit component comprises a plurality of slit units, and one slit unit comprises at least one slit;

when the display device is in the three-dimensional display state, the lens units and the slit units are arranged in a one-to-one correspondence mode, and light from the backlight module is converged by the lenses and then passes through the slit units.

Preferably, the slit member includes a first liquid crystal layer, a first electrode layer on a side of the first liquid crystal layer closer to the lens member, and a second electrode layer on a side of the first liquid crystal layer farther 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.

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

wherein the lens comprises a first sub-lens, the third electrode layer comprises a third electrode, the fourth electrode layer comprises a fourth electrode, and the third electrode and the fourth electrode control the second liquid crystal layer to form the first sub-lens.

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

wherein the lens further comprises a second sub-lens, the fifth electrode layer comprises a fifth electrode, the sixth electrode layer comprises a sixth electrode, and the fifth electrode and the sixth electrode control the third liquid crystal layer to form the second sub-lens;

the first sub-lenses and the second sub-lenses are arranged in a one-to-one correspondence manner.

Preferably, the first sub-lens is a fresnel lens.

Preferably, the slit unit includes first slit sub-units and second slit sub-units alternately arranged in an arrangement direction of the slit unit, and the lens unit includes first lens sub-units and second lens sub-units alternately arranged in an arrangement direction of the lens unit;

the first slit subunits and the first lens subunits are arranged in one-to-one correspondence, and the second slit subunits and the second lens subunits are arranged in one-to-one correspondence;

in the first driving period, light from the backlight module is converged by the first lens subunit and then emitted from the first slit subunit; in the second driving period, light from the backlight module is converged by the second lens subunit and then emitted from the second slit subunit.

Preferably, the plurality of pixels distributed in the array comprises a plurality of pixel columns arranged along the first direction and a plurality of pixel rows arranged along the second direction;

the extending direction of the lenses and the extending direction of the slits are respectively parallel to the first direction, and the arrangement direction of the lenses and the arrangement direction of the slits are respectively parallel to the second direction.

Preferably, each of the pixel rows comprises a plurality of pixel units, and one of the pixel units comprises at least one pixel;

the pixel units and the lens units are arranged in a one-to-one correspondence mode, and the pixel units and the slit units are arranged in a one-to-one correspondence mode.

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.

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

Preferably, the number of lenses in the lens unit is increased after being decreased in the arrangement direction of the lens units.

According to the invention, the lens units and the slit units are arranged in a one-to-one correspondence manner, so that light from the backlight module is emitted from the slit after being converged, the loss of the display brightness of the display device is reduced while 3D display is realized, and the display quality of the display device during 3D display is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a first structure of a display device according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of region A of FIG. 1;

FIG. 3 is a schematic view of a first configuration of a lens structure provided by an embodiment of the present invention;

FIG. 4 is a schematic view of a second configuration of a lens structure provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic diagram of a third configuration of a lens structure provided by an embodiment of the invention;

fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention in a first driving period;

fig. 7 is a schematic structural diagram of a display device in a second driving period according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Furthermore, it should be understood that the detailed description herein is intended only to illustrate and explain the present invention, and is not intended to limit the present invention. In the present invention, unless otherwise specified, the use of directional terms such as "upper" and "lower" generally means upper and lower in the actual use or operation of the device, particularly in the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.

At present, the existing 3D display device has the problems of low display brightness and poor 3D imaging quality.

Referring to fig. 1 to 7, an embodiment of the invention provides a display device 10, including:

a display panel 100 including a plurality of pixels 111 arranged in an array;

a backlight module 200 located at a backlight side of the display panel 100;

a lens member 300 located at the light-emitting side of the backlight module 200, wherein at least when the display device 10 is in a three-dimensional display state, the lens member 300 comprises a plurality of lens units 310, and one of the lens units 310 comprises at least one lens 301;

a slit member 400 located on a side of the lens member 300 away from the backlight module 200, wherein 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 of the slit units 410 includes at least one slit 401;

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

According to the invention, the lens units 310 and the slit units 410 are arranged in a one-to-one correspondence manner, so that light from the backlight module 200 is converged and then emitted from the slits, 3D display is realized, meanwhile, the loss of display brightness of the display device 10 is reduced, and the display quality of the display device 10 during 3D display is improved.

The technical solution of the present invention will now be described with reference to specific embodiments.

Referring to fig. 1 and 2, in the present embodiment, 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.

In some embodiments, the slit member 400 is a liquid crystal grating, which is beneficial to improve the imaging quality of the display device 10 in 3D display.

Referring to fig. 1 and 2, the slit member 400 includes a first liquid crystal layer 402, a first electrode layer 404 disposed on a side of the first liquid crystal layer 402 close to the lens member 300, and a second electrode layer 405 disposed on a side of the first liquid crystal layer 402 away from the lens member 300.

Wherein 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 slits 401.

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

The slit member 400 further includes a first polarizer layer 408 and a second polarizer layer 409 respectively disposed at two opposite sides of the first liquid crystal layer 402, wherein the first polarizer layer 408 has a first light transmission axis, and the second polarizer layer 409 has a second light 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 may be located on the same side of the first substrate 406 as the first electrode layer 404, or the first polarizer layer 408 may be located 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 located on the same side of the first substrate 406, the first polarizer layer 408 is located on a side of the first electrode layer 404 close to the first substrate 406, or the first polarizer layer 408 is located on a 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 far from the first liquid crystal layer 402; the second polarizer layer 409 may be located on the same side of the second substrate 407 as the second electrode layer 405, or the second polarizer layer 409 may be located 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 located on the same side of the second substrate 407, the second polarizer layer 409 is located on a side of the second electrode layer 405 close to the second substrate 407, or the second polarizer layer 409 is located on a side of the second electrode layer 405 far from the second substrate 407.

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, and the first light-shielding region T1 and the first light-transmitting region T2 are alternately disposed, so that the first light-transmitting region T2 forms the slit 401. Specifically, the extending direction of the first light transmission axis of the first polarizer layer 408 is parallel to the extending direction of the second light transmission 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 transmission 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 from the light transmission axis of the first polarizer layer 408, and the light from the backlight module 200 passes through the first polarizer layer 408, the first liquid crystal 403 in the first light shielding region T1, and the second polarizer layer 409 and is emitted; 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, the first liquid crystal 403 changes the direction of the polarized light from the transmission axis of the first polarizer layer 408, and the light from the backlight module 200 passes through the first polarizer layer 408 and the first liquid crystal 403 in the first light-shielding region T1 and then changes the polarization direction, so that the light cannot exit from the second polarizer layer 409.

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 disposed in a whole layer, and the first driving electrode may be disposed corresponding to the first light-shielding region T1 or the first light-transmitting region T2. When the first driving electrode is disposed corresponding to the first light-transmitting region T2, when the display device 10 is in the three-dimensional display state, the first liquid crystal 403 in the first light-transmitting region T2 is deflected under the control of the first common electrode and the first driving electrode, so that the long axes of the first liquid crystal 403 molecules in the first light-transmitting region T2 are perpendicular to the first substrate 406 or the second substrate 407; the first light-shielding region T1 does not have the first driving electrode disposed correspondingly, and the long axis of the first liquid crystal 403 in the first light-shielding region T1 is kept parallel to the first substrate 406 or the second substrate 407; when the first driving electrode is disposed corresponding to the first light-shielding region T1, when the display device 10 is in the three-dimensional display state, the first liquid crystal 403 in the first light-shielding region T1 is deflected under the control of the first common electrode and the first driving electrode, so that 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; the first driving electrode is not disposed in the first light-transmitting region T2, and thus the long axis of the first liquid crystal 403 in the first light-transmitting region T2 is kept perpendicular to the first substrate 406 or the second substrate 407.

When the display device 10 is in the second state, the display device 10 is in the 2D display state, the long 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, and polarized light formed by light rays 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, the light rays are emitted from the second polarizer layer 409, which is beneficial to ensuring the brightness of the display device 10 in the 2D display state.

When the display device 10 is in the second state, if the first driving electrode is disposed corresponding to the first light-transmitting area T2, the first liquid crystal 403 in the first light-transmitting area T2 is deflected under the control of the first common electrode and the first driving electrode, so that the long axis of the first liquid crystal 403 in the first light-transmitting area 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 is deflected under the control of the first common electrode and the second driving electrode, so that a long 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 and the first driving electrode may be disposed on the same layer, and the first driving electrode, the second driving electrode and the first common electrode are all transparent electrodes, and the materials of the first driving electrode, the second driving electrode and the first common electrode may be the same, for example, all of the first driving electrode, the second driving electrode and the first common electrode may be transparent indium tin oxide materials.

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 to the first liquid crystal 403 in the first light-shielding region T1, so that the long axis of the first liquid crystal 403 in the first light-shielding region T1 and the first substrate 406 or the second substrate 407 return to the vertical state; the first driving electrode is not disposed in the first light-transmitting region T2, so that the long axis of the first liquid crystal 403 in the first light-transmitting region T2 is kept perpendicular to the first substrate 406 or the second substrate 407, that is, the slit member 400 keeps the front emission of light from the backlight module 200 under the condition that 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.

In some embodiments, the material of the lens 301 may include an acrylic material or other polymer material, and in this case, the type of the lens 301 may be a conventional optical lens (e.g., a convex lens, etc.), a fresnel lens, etc. The lens 301 may also be a liquid crystal lens, or a compound type lens formed by combining a liquid crystal lens and a conventional optical lens.

Referring to fig. 3 to fig. 7, in some embodiments, the lens element 300 is a liquid crystal lens, which is beneficial to improve the brightness of the display device 10 during 3D display.

Referring to fig. 3, the lens member 300 includes a first lens layer including 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 far from the backlight module 200.

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

Referring to fig. 3, the lens member 300 further includes a third substrate 306 and a fourth substrate 307 located at two opposite sides of the second liquid crystal layer 302a, wherein the third electrode layer 304a is located at a side of the third substrate 306 close to the second liquid crystal layer 302a, or the third electrode layer 304a is located at a side of the third substrate 306 far from the second liquid crystal layer 302 a; 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 302 a.

Referring to fig. 3, the lens component 300 further includes a third polarizer layer 308 and a fourth polarizer layer 309 respectively disposed on two opposite sides of the second liquid crystal layer 302a, where the third polarizer layer 308 has a third light-transmitting axis, and the fourth polarizer layer has a fourth light-transmitting 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 far from the second liquid crystal layer 302 a; the third polarizer layer 308 may be located on the same side of the third substrate 306 as the third electrode layer 304a, or the third polarizer layer 308 may be located on the same side of the third substrate 306 as the third electrode layer 304 a; when the third polarizer layer 308 and the third electrode layer 304a are located on the same side of the third substrate 306, the third polarizer layer 308 is located on a side of the third electrode layer 304a close to the third substrate 306, or the third polarizer layer 308 is located on a side of the third electrode layer 304a far 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 302 a; the fourth polarizer layer 309 may be located on the same side of the fourth substrate 307 as the fourth electrode layer 305a, or the fourth polarizer layer 309 may be located on the same side of the fourth substrate 307 as the fourth electrode layer 305 a; when the fourth polarizer layer 309 and the fourth electrode layer 305a are located on the same side of the fourth substrate 307, the fourth polarizer layer 309 is located on a side of the fourth electrode layer 305a close to the fourth substrate 307, or the fourth polarizer layer 309 is located on a side of the fourth electrode layer 305a far from the fourth substrate 307.

When the display device 10 is in a three-dimensional 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, and 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 transmission axis of the third polarizer layer 308 is perpendicular to the extending direction of the fourth transmission 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 the three-dimensional display state, the long 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 direction of the polarized light from the transmission 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 long 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, the second liquid crystal 303a changes the direction of the polarized light from the light-transmitting axis of the third polarizer layer 308, and the light from the backlight module 200 passes through the third polarizer layer 308, the second liquid crystal 303a in the second light-transmitting region T4, changes the polarization direction, passes through the second liquid crystal 303a in the second light-transmitting region T4, and then is converged by the light from the backlight module 200, and is emitted from the fourth polarizer layer 309 to the slit member 400.

When 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 transmission axis of the first polarizer layer 408 is parallel to the extending direction of the fourth light transmission axis of the fourth polarizer layer 309, so that the light converged by the first sub-lens passes through the first polarizer layer 408.

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 disposed in a whole layer, and the third driving electrode may be disposed corresponding to the second light-shielding region T3 or the second light-transmitting region T4. When the third driving electrode is disposed corresponding to the second transmissive region T4, when the display device 10 is in the three-dimensional display state, the second liquid crystal 303a in the second transmissive region T4 is deflected under the control of the second common electrode and the third driving electrode, so that the long axis of the second liquid crystal 303a in the second transmissive region T4 is not perpendicular to the third substrate 306 or the fourth substrate 307; the second light-shielding region T3 does not have the third driving electrode disposed therein, and the long 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 disposed corresponding to the second light-shielding region T3, when the display device 10 is in the three-dimensional display state, the second liquid crystal 303a in the second light-shielding region T3 is deflected under the control of the second common electrode and the third driving electrode, so that the long 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; the third driving electrode is not disposed in the second light-transmitting region T4, and thus the long axis of the second liquid crystal 303a in the second light-transmitting region T4 is maintained in a non-perpendicular state to the third substrate 306 or the fourth substrate 307.

When the display device 10 is in the second state, the display device 10 is in the 2D display state, and the long axis of the second liquid crystal 303a in the second light-transmitting region T4 is kept in a non-perpendicular state with respect to the third substrate 306 or the fourth substrate 307, so as to converge the light from the backlight module 200 to the slit member 400, which is beneficial to improving the brightness of the display device 10 in the 2D display state; alternatively, the long axes of the second liquid crystal 303a in the second light-transmitting area T4 and the second light-shielding area T3 are parallel to the third substrate 306 or the fourth substrate 307, which is beneficial to the light of the backlight module 200 being emitted from the lens member 300 to the slit member 400 as much as possible, so as to improve the brightness of the display device 10 in the 2D display state.

Referring to fig. 4, in some embodiments, the lens member 300 further includes a second lens layer located on a side of the first lens layer away from the backlight module 200, and the second lens layer includes a third liquid crystal layer 302b, a fifth electrode layer 304b located on a side of the third liquid crystal layer 302b close to the backlight module 200, and a sixth electrode layer 305b located on a side of the third liquid crystal layer 302b away from the backlight module 200.

The lens 301 further includes a second sub-lens, the fifth electrode layer 304b includes a fifth electrode, 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 disposed in a one-to-one correspondence manner. Through the one-to-one correspondence arrangement of the first sub-lenses and the second sub-lenses, the convergence effect of the lens member 300 on the light from the backlight module 200 is favorably improved, more light can pass through the slit member 400, and the display brightness of the display device 10 during 3D display is favorably improved.

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 which are not shown 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 far from the third liquid crystal layer 302 b; 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 302 b.

Lens component 300 still includes and is located respectively fifth polarizer layer and the sixth polarizer layer of the relative both sides of third liquid crystal layer 302b, the fifth polarizer layer has fifth printing opacity axle, the sixth polarizer layer has sixth printing opacity axle, the fifth polarizer layer and the position of sixth polarizer layer is easily understood and is not marked. 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 far from the third liquid crystal layer 302 b; the fifth polarizer layer may be located on the same side of the fifth substrate as the fifth electrode layer 304b, or the fifth polarizer layer may be located on the same side of the fifth substrate as the fifth electrode layer 304 b; when the fifth polarizer layer and the fifth electrode layer 304b are located on the same side of the fifth substrate, the fifth polarizer layer is located on a side of the fifth electrode layer 304b close to the fifth substrate, or the fifth polarizer layer is located on a side of the fifth electrode layer 304b far 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 far from the third liquid crystal layer 302 b; the sixth polarizer layer may be located on the same side of the sixth substrate as the sixth electrode layer 305b, or the sixth polarizer layer may be located on the same side of the sixth substrate as the sixth electrode layer 305 b; when the sixth polarizer layer and the sixth electrode layer 305b are located on the same side of the sixth substrate, 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 far away from the sixth substrate.

Referring to fig. 4, when the display device 10 is in a three-dimensional display state, the third liquid crystal layer 302b forms third light-shielding regions T5 and third light-transmitting regions T6 under the control of the fifth electrode and the sixth electrode, and the third light-shielding regions T5 and the third light-transmitting regions T6 are alternately disposed, so that the third light-transmitting regions T6 form the second sub-lens. Specifically, an extending direction of the fifth transmission axis of the fifth polarizer layer is perpendicular to an extending direction of the sixth 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, a long axis of the third liquid crystal 303b in the third light-shielding region T5 is perpendicular to the fifth substrate or the sixth substrate, and at this time, the third liquid crystal 303b does not change a direction of polarized light from the transmission axis of the fifth polarizer layer, and 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 long axis of the third liquid crystal 303b in the third transmissive region T6 is not perpendicular to the fifth substrate or the sixth substrate, the third liquid crystal 303b changes the direction of polarized light from the transmissive axis of the fifth polarizer layer, and light from the first lens layer passes through the fifth polarizer layer, the third liquid crystal 303b in the third transmissive region T6, changes the polarization direction, passes through the third liquid crystal 303b in the third transmissive region T6, is further condensed, and is emitted 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 enters the second sub-lens for further convergence after being converged by the first sub-lens.

When 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, an extending direction of the first light transmission axis of the first polarizer layer 408 is parallel to an 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 passes through the first polarizer layer 408.

The fifth electrode may be a third common electrode, and the sixth electrode may be a fourth driving electrode; alternatively, the fifth electrode may be a fourth driving electrode, and the sixth electrode may be a third common electrode. The third common electrode may be disposed in a whole 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 is deflected under the control of the third common electrode and the fourth driving electrode, so that the long 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; the third light-shielding region T5 does not have the fourth drive electrode disposed therein, and the long 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 is deflected under the control of the third common electrode and the fourth driving electrode, so that the long axis of the third liquid crystal 303b in the third light-shielding region T5 is perpendicular to the fifth substrate or the sixth substrate; since the fourth driving electrode is not disposed in the third light-transmitting region T6, the long axis of the third liquid crystal 303b in the third light-transmitting region T6 is kept in a non-perpendicular state to the fifth substrate or the sixth substrate.

When the display device 10 is in the second state, the display device 10 is in the 2D display state, and the long axis of the third liquid crystal 303b in the third light-transmitting region T6 is kept in a non-perpendicular state to the fifth substrate or the sixth substrate so as to converge the light from the backlight module 200 to the slit member 400, which is beneficial to improving the brightness of the display device 10 in the 2D display state; alternatively, the long 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 the light of the backlight module 200 to be emitted from the lens member 300 to the slit member 400 as much as possible, and improves the brightness of the display device 10 in the 2D display state.

The lens 301 has a focal point located on a main optical axis of the lens 301, the main optical axis of at least one lens 301 in each lens unit 310 passes through the slit of the corresponding slit unit 410, and preferably, the focal point of at least one lens 301 in each lens unit 310 is located in the slit 401 of the corresponding slit unit 410; more preferably, the main optical axis of each lens 301 in each lens unit 310 passes through the slit 401 of the corresponding slit unit 410, and most preferably, the focal point of each lens 301 in each lens unit 310 is located in the slit 401 of the corresponding slit unit 410. Specifically, the first sub-lens has a first focal point, and the first focal point is located on a first main optical axis of the first sub-lens. When the display device 10 is in the three-dimensional display state, a value of a first included angle formed by the long axis of the second liquid crystal 303a and the third substrate 306 in the second light-transmitting region T4 gradually increases along a direction away from the first main optical axis, the first included angle is located on a side of the second liquid crystal 303a close to the first main optical axis, and the long axis of the second liquid crystal 303a on the first main optical axis is parallel to the third substrate 306. When the lens 301 further comprises the second sub-lens, the second sub-lens has a second focal point, and the second focal point is located on a second main optical axis of the second sub-lens. When the display device 10 is in the three-dimensional display state, a value of a second included angle formed by the long axis of the third liquid crystal 303b and the fifth substrate in the third light-transmitting region T6 gradually increases along a direction away from the second main optical axis, the second included angle is located on one side of the third liquid crystal 303b close to the second main optical axis, and the long axis of the third liquid crystal 303b located on the second main optical axis is parallel to the fifth substrate. When the display device 10 is in the three-dimensional display state, when the lens 301 only includes the first sub-lens, the light from the backlight module 200 passes through the first sub-lens to form a first outgoing direction light and a second outgoing direction light through the change of the first included angle formed by the second liquid crystal 303a and the third substrate 306 located at two sides of the first main optical axis, and the first outgoing direction light and the second outgoing direction light pass through the slit member 400 and exit the display device 10 to form a left-eye display picture and a right-eye display picture respectively, so as to form 3D display. Or, 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, through the change of the first included angle formed by the second liquid crystal 303a and the third substrate 306 located on both sides of the first main optical axis and the change of the second included angle formed by the third liquid crystal 303b and the fifth substrate located on both sides of the second main 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, and the first outgoing direction light and the second outgoing direction light pass through the slit member 400 and exit the display device 10 to form a left-eye display picture and a right-eye display picture respectively, thereby forming 3D display.

Referring to fig. 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 a first luminance region and a second luminance region alternately disposed, a long axis of the second liquid crystal 303a in the first luminance region is parallel to the third substrate 306, and a long axis of the second liquid crystal 303a in the second luminance region is not perpendicular to and parallel to the third substrate 306. By setting the first sub-lens as a liquid crystal fresnel lens, the transmittance of the light of the backlight module 200 is enhanced, and the display brightness of the display device 10 during 3D display is further improved.

In some embodiments, the slit member 400 is a liquid crystal grating, and the lens member 300 is a liquid crystal lens, which is beneficial to switching between 2D display and 3D display and improving the display quality and the display brightness of the display device 10 during 3D display. When the slit member 400 is a liquid crystal grating and the lens member 300 is a liquid crystal lens, the thickness of the slit member 400 may be 0.1 to 10 micrometers, which is beneficial to reducing the thickness of the display device 10 as much as possible and ensuring the 3D display effect of the display device 10.

Referring to fig. 6 and 7, in some embodiments, the slit unit 410 includes a first slit subunit 411 and a second slit subunit 412 alternately arranged along the arrangement direction of the slit unit 410, and the lens unit 310 includes a first lens subunit 311 and a second lens subunit 312 alternately arranged along the arrangement direction of the lens unit 310. The first slit sub-units 411 and the first lens sub-units 311 are arranged in a one-to-one correspondence, and the second slit sub-units 412 and the second lens sub-units 312 are arranged in a one-to-one correspondence. The display device 10 includes a first driving period and a second driving period, in the first driving period, light from the backlight module 200 is converged by the first lens subunit 311 and then emitted from the first slit subunit 411; in the second driving period, light from the backlight module 200 is converged by the second lens subunit 312 and then emitted from the second slit subunit 412. Through the setting of the first driving period and the second driving period, the display device 10 respectively displays different pictures in the first driving period and the second driving period, thereby realizing the effect of 3D display.

In some embodiments, the plurality of pixels 111 distributed in the array includes a plurality of pixel columns arranged along the first direction and a plurality of pixel rows arranged along the second direction. The extending direction of the lenses 301 and the extending direction of the slits 401 are parallel to the first direction, and the arrangement direction of the lenses 301 and the arrangement direction of the slits 401 are parallel to the second direction.

In some embodiments, each of the pixel rows includes a plurality of pixel units, and one of the pixel units includes at least one pixel 111. The pixel units are arranged in one-to-one correspondence with the lens units 310, and the pixel units are arranged in one-to-one correspondence with the slit units 410.

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.

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 realization of the slit 401 in the process and improve the yield of the display device 10. Accordingly, the width of one of the lens units 310 is greater than or equal to the sum of the widths of the two pixels 111 arranged along the second direction.

In some embodiments, the width of one slit 401 is greater than or equal to 10 micrometers and less than or equal to 1 mm, and the distance between adjacent slits 401 is greater than or equal to 10 micrometers and less than or equal to 1 mm, for example, the distance between adjacent slits 401 may be 250 micrometers, 500 micrometers, and the like.

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

In some embodiments, the number of the lenses 301 in the lens unit 310 is increased after being decreased along the arrangement direction of the lens unit 310. The display device 10 includes a central display area and a peripheral display area surrounding the central display area, and since the viewing angles of the light from the central display area and the light from the peripheral display area are different for the same user observing the display device 10, and the viewing angles of the light from the peripheral display area need to be larger, the number of the lenses 301 in the lens unit 310 in the peripheral display area is larger than the number of the lenses 301 in the central display area. The number of the slits 401 in the slit unit 410 may be kept constant in the central display area and the peripheral display area, and accordingly, the ratio of the number of the lenses 301 in the lens units 310 in the peripheral display area to the number of the slits 401 in the corresponding slit unit 410 is larger than the ratio of the number of the lenses 301 in the lens units 310 in the central display area to the number of the slits 401 in the corresponding slit unit 410.

The type of the backlight module 200 may be a collimated backlight module or a non-collimated backlight module, and when the type of the backlight module 200 is a non-collimated backlight module, the number of the lenses 301 in one of the light-transmitting units is greater than the number of the slits 401 in the corresponding slit unit 410, so as to improve the viewing angle of the display device 10.

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 a 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 a 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 is beneficial to avoiding that the slit member 400, the lens member 300 and the like are observed, or that the slit member 400 or the lens member 300 may have problems of crosstalk, moire and the like, which are observed to affect the use quality of the display device 10.

In the embodiment of the present invention, the lens units 310 and the slit units 410 are arranged in a one-to-one correspondence manner, and light from the backlight module 200 is emitted from the slit 401 after being converged, so that 3D display is realized, loss of display brightness of the display device 10 is reduced, and display quality of the display device 10 during 3D display is improved.

The embodiment of the invention discloses a display device, which comprises a display panel, a backlight module positioned on the backlight side of the display panel, and a lens component positioned on the light-emitting side of the backlight module, wherein at least when the display device is in a three-dimensional display state, the lens component comprises a lens unit, the lens unit comprises at least one lens, a slit component positioned on one side of the lens component far away from the backlight module, at least when the display device is in the three-dimensional display state, the slit component comprises a slit unit, the slit unit comprises at least one slit, when the display device is in the three-dimensional display state, the lens unit and the slit unit are arranged in a one-to-one correspondence mode, and light from the backlight module is emitted from the slit unit after being converged by the lens unit. According to the invention, the lens units and the slit units are arranged in a one-to-one correspondence manner, so that light from the backlight module is emitted from the slit after being converged, the loss of the display brightness of the display device is reduced while 3D display is realized, and the display quality of the display device during 3D display is improved.

The display device provided by the embodiment of the present invention is described in detail above, and the principle and the embodiment of the present invention are explained in detail herein by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as limiting the present invention.

Claims

1. A display device, comprising:

the display device comprises a display panel, a driving circuit and a control circuit, wherein the display panel comprises a plurality of pixels distributed in an array;

the backlight module is positioned on the backlight side of the display panel;

when the display device is in the three-dimensional display state, the lens units and the slit units are arranged in a one-to-one correspondence mode, and light from the backlight module is converged by the lenses and then is emitted from the slits.

2. A display device according to claim 1, wherein the slit member comprises a first liquid crystal layer, a first electrode layer on a side of the first liquid crystal layer closer to the lens member, and a second electrode layer on a side of the first liquid crystal layer farther from the lens member;

3. The display device according to claim 2, wherein the lens member comprises a first lens layer, the first lens layer comprising 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;

4. The display device according to claim 3, wherein the lens member further comprises a second lens layer located on a side of the first lens layer away from the backlight module, the second lens layer comprising a third liquid crystal layer, a fifth electrode layer located on a side of the third liquid crystal layer close to the backlight module, and a sixth electrode layer located on a side of the third liquid crystal layer away from the backlight module;

5. The display device according to claim 3, wherein the first sub-lens is a liquid crystal Fresnel lens.

6. The display device according to claim 3, wherein the slit unit includes first and second slit sub-units alternately arranged in an arrangement direction of the slit unit, and the lens unit includes first and second lens sub-units alternately arranged in an arrangement direction of the lens unit;

7. The display device according to claim 1, wherein the plurality of pixels distributed in an array comprises a plurality of pixel columns arranged along a first direction and a plurality of pixel rows arranged along a second direction;

8. The display device according to claim 7, wherein each of the pixel rows comprises a plurality of pixel units, one of the pixel units comprising at least one pixel;

9. The display device according to claim 7, 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.

10. The display device according to claim 7, wherein the slits are provided in one-to-one correspondence with the lenses.

11. The display device according to claim 7, wherein the number of the lenses in the lens unit is increased after being decreased in the arrangement direction of the lens units.