CN111025806A - Display panel, display screen and display device - Google Patents

Display panel, display screen and display device Download PDF

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Publication number
CN111025806A
CN111025806A CN201911296416.1A CN201911296416A CN111025806A CN 111025806 A CN111025806 A CN 111025806A CN 201911296416 A CN201911296416 A CN 201911296416A CN 111025806 A CN111025806 A CN 111025806A
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substrate
display panel
layer
projections
light shielding
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CN201911296416.1A
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Chinese (zh)
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CN111025806B (en
Inventor
高静
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528Polarisers
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136209Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element

Abstract

The invention provides a display panel, a display screen and a display device, wherein the display panel comprises a first sub-panel and a second sub-panel arranged on the first sub-panel, the first sub-panel comprises a first substrate, a first driving layer arranged on the first substrate and a second substrate arranged on the first driving layer, and the first driving layer comprises a first metal circuit; the second sub-panel comprises a third substrate, a second driving layer arranged on the third substrate, a shading layer arranged on the second driving layer and a fourth substrate arranged on the shading layer, and the second driving layer comprises a second metal circuit; the shading layer covers the first metal circuit and the second metal circuit. The shading layer can cover first metal circuit and second metal circuit simultaneously, when can preventing that first metal circuit and second metal circuit from taking place the reflection, has reduced the quantity of shading layer simultaneously to display panel's light-emitting luminance has been guaranteed, double display panel can provide higher contrast in addition, therefore is favorable to improving display effect.

Description

Display panel, display screen and display device
Technical Field
The invention relates to the field of display, in particular to a display panel, a display screen and a display device.
Background
In order to obtain higher contrast, two display panels can be arranged on the backlight module of the display screen to form a double box (double cell), and the intensity of transmitted light penetrating through pixels at corresponding positions in the upper display panel is controlled by each pixel in the lower display panel, so that the contrast of the display screen can be greatly improved. On the other hand, the two display panels increase the number of film layers of the display screen, and the backlight passes through the two display panels with large light loss, which reduces the brightness of the display screen and further affects the display effect.
Disclosure of Invention
The invention provides a display panel, a display screen and a display device for improving display brightness.
The invention provides a display panel, which comprises a first sub-panel and a second sub-panel arranged on the first sub-panel, wherein the first sub-panel comprises a first substrate, a first driving layer arranged on the first substrate and a second substrate arranged on the first driving layer, and the first driving layer comprises a first metal circuit; the second sub-panel comprises a third substrate, a second driving layer arranged on the third substrate, a shading layer arranged on the second driving layer and a fourth substrate arranged on the shading layer, and the second driving layer comprises a second metal circuit; the light shielding layer shields the first metal circuit and the second metal circuit.
Further, the first metal line comprises a plurality of first gate lines and a plurality of first data lines, and projections of the first gate lines and the first data lines on the first substrate are arranged in a crossed manner; the second metal circuit comprises a plurality of second grid lines and a plurality of second data lines, and the projections of the second grid lines and the second data lines on the first substrate are arranged in a crossed mode; the light shielding layer comprises a plurality of first light shielding parts and a plurality of second light shielding parts, the projections of the first light shielding parts and the second light shielding parts on the first substrate are arranged in a crossed mode, the first light shielding parts shield the first grid lines and the second grid lines, and the second light shielding parts shield the first data lines and the second data lines.
Further, projections of two adjacent first gate lines on the first substrate and projections of two adjacent first data lines on the first substrate enclose a first opening, projections of two adjacent second gate lines on the first substrate and projections of two adjacent second data lines on the first substrate enclose a second opening, and projections of two adjacent first shading parts on the first substrate and projections of two adjacent second shading parts on the first substrate enclose a third opening; at least one of the second openings is located within one of the first openings and at least one of the third openings is located within one of the second openings.
Further, a plurality of the second openings are located in one of the first openings, and a plurality of the third openings are located in one of the first openings.
Further, the area of the third opening is smaller than that of the second opening, and the area of the first opening is equal to an integral multiple of that of the second opening.
Further, the projection of at least one first light shielding part on the first substrate is located between two projections of two adjacent first gate lines on the first substrate, and the projection of at least one second light shielding part on the first substrate is located between two projections of two adjacent first data lines on the first substrate.
Further, the projection of each second gate line on the first substrate is located in the projection of one first shading part on the first substrate, and the projection of the second gate line on the first substrate is smaller in size; the projection of each second data line on the first substrate is positioned in the projection of one second shading part on the first substrate, and the projection of the second data line on the first substrate is smaller in size.
Further, the display panel includes a first polarizer, a second polarizer and a third polarizer, the first polarizer is disposed below the first substrate, the second polarizer is disposed between the second substrate and the third substrate, and the third polarizer is disposed above the third substrate; the first sub-panel comprises a first liquid crystal layer, and the first liquid crystal layer is positioned between the first driving layer and the second substrate; the second sub-panel comprises a second liquid crystal layer, and the second liquid crystal layer is located between the second driving layer and the shading layer.
On the other hand, the invention also provides a display screen which comprises a backlight module and the display panel, wherein the display panel is arranged on the backlight module.
In yet another aspect, the present invention also provides a display device, which includes the display screen as described above.
In the invention, the shading layer can simultaneously shade the first metal circuit and the second metal circuit, so that the first metal circuit and the second metal circuit can be prevented from being reflected, and the number of the shading layer is reduced, thereby ensuring the light-emitting brightness of the display panel; in addition, the dual display panel can provide higher contrast ratio, thereby being beneficial to improving the display effect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a display panel according to the present invention.
Fig. 2 is a top view of a first metal line of the display panel shown in fig. 1.
Fig. 3 is a top view of a second metal line of the display panel shown in fig. 1.
Fig. 4 is a plan view of a light-shielding layer of the display panel shown in fig. 1.
Fig. 5 is a schematic structural diagram of an embodiment of the display screen of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, the present invention provides a display panel, a display screen and a display device, where the display panel includes a first sub-panel and a second sub-panel, the first sub-panel includes a first substrate, a first driving layer disposed on the first substrate, and a second substrate disposed on the first driving layer, and the first driving layer includes a first metal line; the second sub-panel is positioned on the first display substrate, the second display panel comprises a third substrate, a second driving layer arranged on the third substrate, a light shielding layer arranged on the second driving layer and a fourth substrate arranged on the light shielding layer, and the second driving layer comprises a second metal circuit; the light shielding layer shields the first metal circuit and the second metal circuit.
The shading layer can simultaneously shade the first metal circuit and the second metal circuit, so that the number of the shading layers is reduced while the first metal circuit and the second metal circuit are prevented from being reflected, and the light-emitting brightness of the display panel is ensured; in addition, the dual display panel can provide higher contrast ratio, thereby being beneficial to improving the display effect.
Referring to fig. 1, the display panel includes a first sub-panel 10 and a second sub-panel 20 disposed on the first sub-panel 10. The first sub-panel 10 is used for displaying black and white images, and the second display panel 20 is used for displaying color images. The resolution of the second sub-panel 20 may be higher than the resolution of the first sub-panel 10, or may be equal to the resolution of the first sub-panel 10. It should be noted that "up" herein is defined by the light emitting direction, the light emitting direction is the direction from bottom to top, and "up" herein only includes the orientation relationship, and does not limit whether other elements are disposed between the first sub-panel 10 and the second sub-panel, and the following "up" can be understood similarly.
The first display panel 10 includes a first substrate 11, a first driving layer 12 disposed on the first substrate 11, a first liquid crystal layer 13 disposed on the first driving layer 12, and a second substrate 14 disposed on the first liquid crystal layer 13. The second display panel 20 includes a third substrate 21, a second driving layer 22 disposed on the third substrate 21, a second liquid crystal layer 23 disposed on the second driving layer 22, a light-shielding layer 25 disposed on the second driving layer, and a fourth substrate 26 disposed on the light-shielding layer 25. Openings 250 (reference numeral refer to fig. 4) are formed between the light shielding layers, the color resistors 24 are filled in the openings 250, and the color resistors 24 can be selected from red, green and blue color resistors.
Referring to fig. 2 to 4, in the present embodiment, the first driving layer 12 and the second driving layer 22 are both TFT (thin film transistor) layers. The first driving layer 12 includes a first metal circuit, the first metal circuit includes a first gate line 121 and a first data line 122, and projections of the first gate line 121 and the first data line 122 on the first substrate 11 are arranged in a crossing manner; the first driving layer 22 includes a second gate line 221 and a second data line 222, and projections of the second gate line 221 and the second data line 222 on the first substrate 11 are arranged to intersect. In other embodiments, the metal lines may also be other electrodes or metal lines. Of course, the first and second driving layers 12 and 22 further include an insulating layer, a semiconductor layer, and the like, and detailed description thereof will be omitted in this embodiment.
The light shielding layer 25 includes a plurality of first light shielding portions 251 and a plurality of second light shielding portions 252, the first light shielding portions 251 and the second light shielding portions 252 are disposed in a projection intersecting manner on the first substrate 11, the first light shielding portions 251 shield the first gate lines 121 and the second gate lines 221, and the second light shielding portions 252 shield the first data lines 122 and the second data lines 222, so as to prevent metal layers such as the first gate lines 121, the second gate lines 221, the first data lines 122 and the second data lines 222 from being reflected to affect the light emitting quality, and further affect the display effect.
In this embodiment, the resolution (e.g. 2048 × 1080) of the first sub-panel 10 is smaller than the resolution (e.g. 4096 × 2160) of the second sub-panel 20, and accordingly, the number of the pixel openings of the first sub-panel 10 is smaller, the number of the first gate lines 121 is smaller than the number of the second gate lines 221, and the number of the first data lines 122 is smaller than the number of the second data lines 222. The first light-shielding portions 251 are equal in number and correspond to the second gate lines 221 one by one, and the second light-shielding portions 252 are equal in number and correspond to the second data lines 222 one by one. That is, the projections of a portion of the second gate line 221A and a portion of the first light-shielding portion 251A on the first substrate 11 are located between two adjacent first gate lines 121, and the projections of a portion of the second data line 222A and a portion of the second light-shielding portion 252A on the first substrate 11 are located between two adjacent first data lines 122.
Optionally, the projection of each second gate line 221 on the first substrate 11 is located in the projection of one first light shielding portion 251 on the first substrate 11, and the size of the projection of the second gate line 221 on the first substrate 11 is smaller; the projection of each second data line 222 on the first substrate 11 is located within the projection of one second light shielding portion 252 on the first substrate 11, and the projection of the second data line 222 on the first substrate 11 is smaller in size. In other words, the width d5 of the first light shielding portion 251 is greater than the width d3 of the second gate line 221, the width d6 of the second light shielding portion 252 is greater than the width d4 of the second data line 222, the width d1 of the first gate line 121 is equal to the width d3 of the second gate line 221, and the width d2 of the first data line 122 is equal to the width d4 of the second data line 222. Thus, the first light-shielding portion 251 can completely cover the edges of the first gate line 121 and the second gate line 122, and the second light-shielding portion 252 can completely cover the edges of the first data line 122 and the second data line 222, so as to shield the reflected light at the edge portions, and further improve the light-emitting quality.
With reference to fig. 2 to fig. 4, projections of two adjacent first gate lines 121 on the first substrate 11 and projections of two adjacent first data lines 122 on the first substrate 11 enclose a first opening 120, projections of two adjacent second gate lines 221 on the first substrate 11 and projections of two adjacent second data lines 222 on the first substrate 11 enclose a second opening 220, and projections of two adjacent first light-shielding portions 251 on the first substrate 11 and projections of two adjacent second light-shielding portions 253 on the first substrate 11 enclose a third opening 230. Since the width d5 of the first light shielding portion 251 and the width d6 of the second light shielding portion 252 are large, the size of the third aperture 330 is small, so that the pixel aperture is determined by the third aperture 330.
In this embodiment, the plurality of second openings 220 are located in one first opening 120, and the plurality of third openings 250 are located in one first opening 120, but the number of the plurality of third openings is four in this embodiment. Since the resolution of the first sub-panel 10 is 2048x1080 and the resolution of the second sub-panel 20 is 4096x2160, four of the second openings 220 are located in one of the first openings 120 and four of the third openings 250 are located in one of the first openings 120. The area of the first opening 120 is equal to four times the area of the second opening 220; since the widths of the first light shielding portion 251 and the second light shielding portion 252 are large, the area of the third opening 250 is smaller than that of the second opening 220. The number of the second and third openings 220 and 250 is an integral multiple of the number of the first openings 120, from the whole display panel.
In another embodiment, the resolution of the first sub-panel 10 and the resolution of the second sub-panel 20 may be 2048 × 1080, in which case each second opening 220 is located in one of the first openings 120, each third opening 250 is located in one of the second openings 120 and the second opening 220, and each second opening 220 is exactly overlapped with one first opening 120. Since the first light shielding portion 251 and the second light shielding portion 252 have a large width, the area of the third opening is slightly smaller than the area of the first opening 120 and the area of the second opening 220. In other embodiments, the resolution of the first sub-panel 10 and the resolution of the second sub-panel 20 can be selected, but in any case, at least one of the second openings 220 is located in one of the first openings 120, and at least one of the third openings 250 is located in one of the second openings 120; meanwhile, the area of the first opening 120 is an integral multiple of the area of the second opening 220, and the area of the third opening 250 is smaller than the area of the second opening 220.
Optionally, the display panel further includes a first polarizer 3, a second polarizer 4, and a third polarizer 5, the first polarizer 3 is disposed below the first substrate 11, the second polarizer 4 is disposed between the second substrate 14 and the third substrate 21, and the third polarizer 5 is disposed on the fourth substrate 26. The second polarizer 4 is used as both the upper polarizer of the first sub-panel 10 and the lower polarizer of the second sub-panel 20, which is beneficial to reducing the thickness of the display panel, reducing the material cost and simplifying the manufacturing process.
On the other hand, the invention also provides a display screen. Referring to fig. 5, in this embodiment, the display panel includes a backlight module 6 and the display panel according to any of the foregoing embodiments. The backlight module comprises a back plate, a light source, a light guide plate, a reflecting plate and other optical film layer structures. The display panel covers in backlight unit 6, backlight unit 6 does display panel provides emergent light, based on the different arrangement mode of liquid crystal in the display panel, shows different images. The shading layer can cover first metal circuit and second metal circuit simultaneously, when can preventing that first metal circuit and second metal circuit from taking place the reflection, has reduced the quantity of shading layer simultaneously to display panel's light-emitting luminance has been guaranteed, double display panel can provide higher contrast in addition, therefore is favorable to improving the display effect of display screen.
In another aspect, the invention further provides a display device comprising the display screen. The display device is, for example, a display, a notebook computer, a flat panel television, a conference flat panel, or other devices having a display function. Of course, the display device may also include other components, such as a processing system, a storage system, a communication system, a power supply system, and the like, and this embodiment is not described in detail. The shading layer can simultaneously cover the first metal circuit and the second metal circuit, and can prevent the first metal circuit and the second metal circuit from reflecting, and simultaneously reduce the quantity of the shading layer, thereby ensuring the light-emitting brightness of the display panel, and in addition, the double display panels can provide higher contrast, thereby being beneficial to improving the display effect of the display device.
Although the present invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. A display panel, comprising:
the first sub-panel comprises a first substrate, a first driving layer and a second substrate, wherein the first driving layer is arranged on the first substrate, the second substrate is arranged on the first driving layer, and the first driving layer comprises a first metal circuit;
the second sub-panel is arranged on the first sub-panel and comprises a third substrate, a second driving layer arranged on the third substrate, a shading layer arranged on the second driving layer and a fourth substrate arranged on the shading layer, and the second driving layer comprises a second metal circuit;
the light shielding layer shields the first metal circuit and the second metal circuit.
2. The display panel according to claim 1, wherein the first metal line comprises a plurality of first gate lines and a plurality of first data lines, and projections of the first gate lines and the first data lines on the first substrate are arranged to intersect;
the second metal circuit comprises a plurality of second grid lines and a plurality of second data lines, and the projections of the second grid lines and the second data lines on the first substrate are arranged in a crossed mode;
the light shielding layer comprises a plurality of first light shielding parts and a plurality of second light shielding parts, the projections of the first light shielding parts and the second light shielding parts on the first substrate are arranged in a crossed mode, the first light shielding parts shield the first grid lines and the second grid lines, and the second light shielding parts shield the first data lines and the second data lines.
3. The display panel according to claim 2, wherein projections of two adjacent first gate lines on the first substrate and projections of two adjacent first data lines on the first substrate enclose a first opening, projections of two adjacent second gate lines on the first substrate and projections of two adjacent second data lines on the first substrate enclose a second opening, and projections of two adjacent first light-shielding portions on the first substrate and projections of two adjacent second light-shielding portions on the first substrate enclose a third opening;
at least one of the second openings is located within one of the first openings and at least one of the third openings is located within one of the second openings.
4. The display panel according to claim 3, wherein a plurality of the second openings are located in one of the first openings, and a plurality of the third openings are located in one of the first openings.
5. The display panel according to claim 3, wherein an area of the third opening is smaller than an area of the second opening, and an area of the first opening is equal to an integral multiple of the area of the second opening.
6. The display panel according to claim 2, wherein a projection of at least one of the first light shielding portions on the first substrate is located between two projections of two adjacent first gate lines on the first substrate, and a projection of at least one of the second light shielding portions on the first substrate is located between two projections of two adjacent first data lines on the first substrate.
7. The display panel according to claim 6, wherein a projection of each of the second gate lines on the first substrate is located within a projection of one of the first light shielding portions on the first substrate, and a size of the projection of the second gate line on the first substrate is smaller; the projection of each second data line on the first substrate is positioned in the projection of one second shading part on the first substrate, and the projection of the second data line on the first substrate is smaller in size.
8. The display panel according to any one of claims 1 to 7, wherein the display panel comprises a first polarizer disposed below a first substrate, a second polarizer disposed between a second substrate and a third substrate, and a third polarizer disposed above the third substrate;
the first sub-panel comprises a first liquid crystal layer, and the first liquid crystal layer is positioned between the first driving layer and the second substrate;
the second sub-panel comprises a second liquid crystal layer, and the second liquid crystal layer is located between the second driving layer and the shading layer.
9. A display screen, comprising a backlight module and the display panel according to any one of claims 1 to 8, wherein the display panel is disposed on the backlight module.
10. A display device, characterized in that it comprises a display screen according to claim 9.
CN201911296416.1A 2019-12-16 2019-12-16 Display panel, display screen and display device Active CN111025806B (en)

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CN111399289B (en) * 2020-04-29 2023-01-24 北京小米移动软件有限公司 Display screen, display device and control method of display screen
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