CN113376903B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN113376903B
CN113376903B CN202110695434.8A CN202110695434A CN113376903B CN 113376903 B CN113376903 B CN 113376903B CN 202110695434 A CN202110695434 A CN 202110695434A CN 113376903 B CN113376903 B CN 113376903B
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substrate
area
display panel
spacer
region
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CN113376903A (en
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凌安恺
沈柏平
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL 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
    • G02F1/00—Devices 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
    • G02F1/01—Devices 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 
    • G02F1/13—Devices 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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display panel and a display device, wherein the display panel comprises a liquid crystal box, the liquid crystal box comprises a first substrate and a second substrate which are oppositely arranged, the display panel comprises a display area and a non-display area which at least partially surrounds the display area, and sub-pixels of the display area comprise an opening area and a non-opening area; the non-opening area comprises a spacer between the first substrate and the second substrate, and the spacer is positioned on one side of the first substrate close to the second substrate; the display area comprises a first area and a second area, the non-display area comprises a binding area, the first area is located on one side, away from the binding area, of the second area, the spacers comprise a first spacer located in the first area and a second spacer located in the second area, and the compression ratio of the first spacer is smaller than that of the second spacer. The invention improves the problem of uneven display of the display panel which is vertically placed by enabling the compression rate of the first spacer in the first area to be smaller than that of the second spacer in the second area.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of optical technology, display devices including liquid crystal panels and light emitting diodes have been sufficiently used in various fields. Vehicle-mounted screens, televisions and the like are usually vertically placed, gravity Mura (uneven display) easily appears under a long-time high-temperature environment, the bottom of a display panel can have a yellowing phenomenon, the gravity Mura means that liquid crystal molecules are gathered to the lower part of the display panel under the action of gravity when the display panel is vertically placed, the lower part of the liquid crystal display panel is expanded, the upper part and the lower part of the display panel are inconsistent in box thickness, and therefore the problem of uneven picture display is caused.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which are used to improve the phenomenon that the bottom of the display panel emits light when the display panel is vertically placed.
In one aspect, the invention discloses a display panel, which comprises a liquid crystal box, wherein the liquid crystal box comprises a first substrate and a second substrate which are arranged oppositely, and a liquid crystal layer positioned between the first substrate and the second substrate, and the thickness of the liquid crystal box is d in the direction vertical to the light emergent surface of the display panel h The display panel comprises a display area and a non-display area at least partially surrounding the display area, the display area comprises a plurality of sub-pixels, each sub-pixel comprises an opening area and a non-opening area surrounding the opening area, the thickness of the liquid crystal cell is the distance between one side of the first substrate close to the second substrate and one side of the second substrate close to the first substrate in the opening areaSeparating;
in the non-opening area, a spacer is arranged between the first substrate and the second substrate and is positioned on one side of the first substrate close to the second substrate;
the display area comprises a first area and a second area, the non-display area comprises a binding area, the first area is located on one side, away from the binding area, of the second area, the spacers comprise a first spacer located in the first area and a second spacer located in the second area, and the compression ratio of the first spacer is smaller than that of the second spacer.
On the other hand, the invention also discloses a display device which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the display panel comprises a liquid crystal box, wherein the liquid crystal box comprises a first substrate and a second substrate which are arranged oppositely, the display panel comprises a display area and a non-display area which at least partially surrounds the display area, and sub-pixels of the display area comprise an opening area and a non-opening area; the non-opening area comprises a spacer between the first substrate and the second substrate, and the spacer is positioned on one side of the first substrate close to the second substrate; the display area comprises a first area and a second area, the non-display area comprises a binding area, the first area is located on one side, away from the binding area, of the second area, the spacers comprise a first spacer located in the first area and a second spacer located in the second area, and the compression ratio of the first spacer is smaller than that of the second spacer. In the prior art, the compression ratios of the spacers in the first area and the second area are equal, so that the density of liquid crystal molecules of a vertically placed display panel is reduced in a long-time high-temperature environment, the compression ratio of the spacers is low, the fluidity of liquid crystal is enhanced at high temperature, the liquid crystal is gathered at the bottom of a screen under the effect of gravity, the thickness of a liquid crystal box is increased, and the second area of the display panel is yellow. In the invention, the compression ratio of the spacer in the second area at the bottom of the display panel is greater than that of the spacer in the first area at the top, so that the vertically placed display panel maintains the thickness of the liquid crystal box in the second area unchanged under a long-time high-temperature environment through the high compression ratio of the spacer in the second area, and the gravity Mura does not appear in the second area at the bottom of the display panel, thereby improving the reliability of the display panel.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel in the prior art;
FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1;
FIG. 3 is a schematic plane structure diagram of a display panel according to the present invention;
FIG. 4 is a cross-sectional view taken along line B-B' of FIG. 3;
FIG. 5 is a further sectional view taken along line B-B' of FIG. 3;
FIG. 6 is a further sectional view taken along line B-B' of FIG. 3;
FIG. 7 is a cross-sectional view taken along line C-C' of FIG. 3;
FIG. 8 is a further sectional view taken along line C-C' of FIG. 3;
FIG. 9 is a further sectional view taken along line C-C' of FIG. 3;
FIG. 10 is a cross-sectional view taken along line D-D' of FIG. 3;
FIG. 11 is a further sectional view taken along line C-C' of FIG. 3;
FIG. 12 is a further sectional view taken along line C-C' of FIG. 3;
FIG. 13 is a further sectional view taken along line C-C' of FIG. 3;
FIG. 14 is a schematic plan view of a display panel according to another embodiment of the present invention;
fig. 15 is a schematic structural diagram of a display device provided by an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
Aiming at the phenomenon that the bottom of the display panel is easy to yellow when the display panel is vertically placed, the inventor carries out the following research on the prior art: referring to fig. 1 and 2, fig. 1 is a schematic plan view of a display panel in the prior art, fig. 2 is a cross-sectional view taken along a direction a-a ' in fig. 1, a display panel 00 includes a display area AA ' and a non-display area BB ' surrounding the display area AA ', the display area AA ' has subpixels P ' arranged in an array, the subpixels P ' have an opening area G ' and a non-opening area NG surrounding the opening area G ', the display panel 00 further includes a first substrate 01 and a second substrate 02 disposed opposite to each other, and liquid crystal molecules 03 interposed between the first substrate 01 and the second substrate 02, a spacer 04 is disposed on a side of the first substrate 01 adjacent to the second substrate 02 in the non-opening area, the spacer 04 is used for supporting a height of the liquid crystal layer between the first substrate 01 and the second substrate 02, and when the display panel 00 is vertically disposed, as can be seen in fig. 2, because the display panel is vertically placed and is under high temperature in work for a long time, the density of liquid crystal molecules is reduced, the liquid crystal molecules are accumulated to the lower part of the display panel under the action of gravity, the lower part of the display panel is expanded, the thicknesses of liquid crystal boxes on the upper part and the lower part are inconsistent, and the bottom of the display panel is yellowed.
In order to solve the above problems, the present invention provides a display panel and a display device, and specific embodiments thereof will be described in detail below.
Referring to fig. 3, 4 and 5, fig. 3 is a schematic plan view of a display panel according to the present invention, fig. 4 is a cross-sectional view taken along the direction B-B 'in fig. 3, fig. 5 is another cross-sectional view taken along the direction B-B' in fig. 3, fig. 4 is a cross-sectional view taken when the liquid crystal cell is not in a box-like state, and fig. 5 is a cross-sectional view taken when the liquid crystal cell is in a box-like state. The display panel 000 provided in this embodiment includes a liquid crystal cell 001, where the liquid crystal cell 001 includes a first substrate 1 and a second substrate 2 that are disposed opposite to each other, and a liquid crystal layer located between the first substrate 1 and the second substrate 2, and a thickness of the liquid crystal cell is d in a direction perpendicular to an exit surface OU of the display panel h (referring to FIG. 5), the display panel 000 includes a display area AA and a non-display area BB at least partially surrounding the display area AA, the display area AA including a plurality of sub-pixels P including an opening area G and a non-opening area NG surrounding the opening area G, a thickness d of a liquid crystal cell h The distance between the side of the first substrate 1 close to the second substrate 2 and the side of the second substrate 2 close to the first substrate 1 in the opening region G; in the non-opening area NG, a spacer 4 is included between the first substrate 1 and the second substrate 2, and the spacer 4 is positioned on one side of the first substrate 1 close to the second substrate 2; the display area AA includes a first area Q1 and a second area Q2, the non-display area BB includes a bound area BD, the first area Q1 is located on a side of the second area Q2 away from the bound area BD, the spacer 4 includes a first spacer 41 located in the first area Q1 and a second spacer 42 located in the second area Q2, and a compression ratio of the first spacer 41 is smaller than that of the second spacer 42.
Specifically, fig. 3 to fig. 5 only schematically illustrate a situation that the non-display area BB completely surrounds the display area AA, and certainly, the non-display area BB partially surrounds the display area AA, and when the non-display area BB partially surrounds the display area AA, an image pickup area may be disposed at an edge of the display area AA to achieve image acquisition, which is not specifically limited herein.
The display area AA includes a plurality of sub-pixels P, which may include R, G, B, R, G, B, W, or other sub-pixels, where no pattern distinction is made, and of course, fig. 4 and 5 do not perform pattern filling on the first substrate 1, the second substrate 2, and the liquid crystal molecules 3, which is only schematically illustrated. Optionally, the first substrate 1 may be a color film substrate, and the second substrate 2 may be an array substrate. Of course, the display panel 000 further includes a plurality of scan lines (not shown) extending along the first direction X and arranged in the second direction Y, and a plurality of data lines (not shown) extending along the second direction Y and arranged in the first direction X, where the scan lines and the data lines intersect to define the region of the sub-pixels P.
Fig. 3 only schematically shows that the display area AA only includes the first area Q1 and the second area Q2 along the second direction Y, and the first area Q1 is located on the side of the second area Q2 away from the bonded area BD, that is, the second area Q2 is located at the bottom of the display area AA when the display panel 000 is used vertically.
It is understood that the non-display area BB along the second direction Y further includes a fan-out area (not shown) located at the bonding area BD near the display area AA, the bonding area BD being used for bonding the driver chip or for bonding the flexible printed circuit board. Also shown in fig. 5 is a frame for the first substrate 1 and the second substrate 2 to form a closed space for accommodating the liquid crystal molecules 3.
In order to increase the aperture ratio of the sub-pixel P, the spacer 4 is usually placed in the non-aperture area NG. During manufacturing, the spacer 4 is a non-opening area NG formed on the first substrate 1, then the first substrate 1 is opposite to the second substrate 2, the sealant J is formed, the sealant J is solidified to form a closed space between the first substrate 1 and the second substrate 2, and then the liquid crystal molecules 3 are filled in.
Note that, in general, the spacers 4 in the display panel 000 include two types, one is a main spacer and the other is an auxiliary spacer, the main spacer is used to support the cell thickness of the liquid crystal cell, and the auxiliary spacer is used to support the auxiliary spacer. The spacer 4 in the present invention is referred to as a main spacer and will not be described in detail below.
It is understood that the spacers 4 need to be in a compressed state after the liquid crystal cell is formed, but the compression ratio of the spacers 4 needs to have a certain upper limit, because the compression ratio of the spacers 4 directly affects the amount of liquid crystal molecules 3 that can be accommodated, which of course ultimately affects the display performance of the display panel. Certainly, in an allowable range, the larger the compression ratio of the spacer 4 is, the more the display panel can maintain the constant cell thickness of the liquid crystal cell when the display panel is vertically placed for use for a long time and at a high temperature, gravity Mura is not easy to occur, and the reliability of the display panel is improved.
Fig. 4 only shows that the height of the second spacer 42 is greater than the height of the first spacer 41 in the liquid crystal cell out of the box shape, so that the compression ratio of the second spacer 42 is greater than the compression ratio of the first spacer 41, and therefore, after the liquid crystal cell is formed (see fig. 5), although the compression ratio of the second spacer 42 greater than the compression ratio of the first spacer 41 can also be achieved by other means, which is not particularly limited herein.
It is understood that the ability of the second region Q2 of the display panel to maintain the cell thickness constant needs to be greater than the ability of the first region Q1 to maintain the cell thickness constant, since the display panel may be exposed to high temperature environments for a long time when it is vertically placed for use, where the bottom is more prone to liquid crystal accumulation. According to the invention, the compression ratio of the second spacer 42 is greater than that of the first spacer 41, so that compared with the first region Q1 far away from the bottom of the display panel, the second region Q2 close to the bottom of the display panel can keep the cell thickness of the liquid crystal cell unchanged, the liquid crystal molecules 3 are prevented from accumulating in the second region Q2 due to the change of the cell thickness of the liquid crystal cell in the second region Q2, gravity Mura is avoided, and the reliability of the display panel is improved.
Compared with the prior art, the display panel 000 of the embodiment has at least the following beneficial effects:
in the prior art, since the compression ratios of the spacers 4 in the first region Q1 and the second region Q2 are equal, the density of the liquid crystal molecules 3 of the vertically arranged display panel 000 is reduced in a long-time high-temperature environment, while the compression ratio of the spacers 4 is lower, the fluidity of the liquid crystal is enhanced at a high temperature, the liquid crystal is gathered at the bottom of a screen under the effect of gravity, the thickness of a liquid crystal box is increased, and the second region Q2 of the display panel is yellow. In the invention, the compression ratio of the spacer 4 in the second area Q2 at the bottom of the display panel is greater than that of the spacer 4 in the first area Q1 at the top, so that the vertically placed display panel has higher compression ratio through the spacer 4 in the second area Q2 under a long-time high-temperature environment, the thickness of a liquid crystal box of the second area Q2 is maintained to be unchanged, gravity Mura does not occur in the second area Q2 at the bottom of the display panel, and the reliability of the display panel is improved.
In some alternative embodiments, referring to FIG. 6, FIG. 6 is a further cross-sectional view taken along line B-B' of FIG. 3, and FIG. 6 is a cross-sectional view of the liquid crystal cell in the box-like state. Compression ratio K ═ H + d of spacer 4 in this example T +d C -d h ) H, where H is the uncompressed height of the spacer 4 in the direction perpendicular to the light-emitting surface OU of the display panel; in the direction perpendicular to the light-emitting surface OU of the display panel, the height difference between the surface of the first substrate 1 in the non-opening region NG and the surface of the first substrate 1 in the opening region G is d C (ii) a In the direction perpendicular to the light-emitting surface OU of the display panel, the height difference between the surface of the second substrate 2 in the non-opening region NG and the surface of the second substrate 2 in the opening region G is d T (ii) a The thickness of the liquid crystal box is d in the direction perpendicular to the light-emitting surface OU of the display panel h 。
It can be understood that, in the manufacturing process of the array substrate and the color filter substrate, since film layers such as metal traces and black matrixes are inevitably required to be arranged in the non-open area NG, a step difference is formed between the non-open area NG and the open area G, in this embodiment, d C A step difference on the first substrate 1 side, i.e. a height difference between the surface of the first substrate 1 in the non-opening area NG and the surface of the first substrate 1 in the opening area G in a direction perpendicular to the light-emitting surface OU of the display panel, d T Is a step difference on the side of the second substrate 2, i.e. a height difference between the surface of the second substrate 2 in the non-opening area NG and the surface of the second substrate 2 in the opening area G in a direction perpendicular to the light-emitting surface OU of the display panel. In addition, d h The thickness of the liquid crystal cell in the direction perpendicular to the light-emitting surface OU of the display panel is as described aboveThe thickness of the liquid crystal cell is the distance between the side of the first substrate 1 close to the second substrate 2 and the side of the second substrate 2 close to the first substrate 1 in the opening region G, fig. 6 only schematically shows the step difference of the first substrate 1 side and the step difference of the second substrate 2 side, and the step difference may be formed by any one of the film layers close to the liquid crystal molecules 3, and is not limited specifically here.
Thickness d of the liquid crystal cell h Are preset, so the factors that can influence the compressibility of the spacer 4 are mainly: the uncompressed height H of the spacer 4 in the direction perpendicular to the light emitting surface OU of the display panel, and the step d on the first substrate 1 side C A step d on the second substrate 2 side T Any one of these three factors changes and affects the compressibility of the spacer 4. It should be noted that the height of the spacer 4 in fig. 6 is the compressed height, the uncompressed height of the spacer 4 is not shown in fig. 6, and the uncompressed heights of the spacer 4 in the first zone Q1 and the second zone Q2 may be the same.
It should be noted that the uncompressed height may also refer to a height at which the liquid crystal cell is disassembled after being disassembled, specifically, the initial height of the first spacer in the first region and the initial height of the second spacer in the second region may be different, and when the liquid crystal cell is disassembled, the first spacer 41 and the second spacer 42 are compressed to a certain degree due to external pressure, so that the cell thicknesses of the liquid crystal cells in the first region Q1 and the second region Q2 are the same, but after the liquid crystal cell is disassembled, the first substrate 1 and the second substrate 2 are separated, the external pressure is removed, and the first spacer 41 and the second spacer 42 rebound to a certain height due to elasticity of their own materials, and the height at which the rebound is the uncompressed height.
In some alternative embodiments, the compression rate of the spacers 4 in the second region Q2 may be gradually increased in the direction along which the first region Q1 points toward the bound region BD, thus gradually increasing the ability to maintain the cell thickness near the bottom of the display panel.
In FIG. 6, it is shown that the first substrate 1 side step in the first region Q1 is d C 1, the step difference on the first substrate 1 side in the second region Q2 is dc2, and the step difference d on the second substrate 2 side in the first region Q1 T 1, a section of the second region Q2 on the side of the second substrate 2Difference is d T 2, of course, the step difference on the first substrate 1 side may be absent, i.e., d C 0. In this embodiment, the compression ratio of the spacers 4 in the first region Q1 is smaller than that of the spacers 4 in the second region Q2 by adjusting at least one of the three factors, so that the cell thickness of the liquid crystal cell can be kept unchanged in the second region Q2 close to the bottom of the display panel compared with the first region Q1 far away from the bottom of the display panel, the liquid crystal molecules 3 are prevented from accumulating in the second region Q2 due to the change in the cell thickness of the liquid crystal cell in the second region Q2, and the occurrence of the gravity Mura is prevented, thereby improving the reliability of the display panel.
In some alternative embodiments, reference is made to fig. 7, 8 and 9, fig. 7 being a cross-sectional view taken along the direction C-C ' in fig. 3, fig. 8 being a further cross-sectional view taken along the direction C-C ' in fig. 3, fig. 9 being a further cross-sectional view taken along the direction C-C ' in fig. 3, fig. 7 to 9 being cross-sectional views taken along the box-like state of the liquid crystal cell, and with continued reference to fig. 3.
The second substrate 2 in this embodiment includes a second substrate 5, a first planarization layer 6 on the side of the second substrate 5 close to the first substrate 1, a first metal layer 7 on the side of the first planarization layer 6 close to the first substrate 1, and a first insulating layer 8 on the side of the first metal layer 7 close to the first substrate 1;
in the non-open area NG, the first metal layer 7 includes a first sub-layer 71 located in the first area Q1 and a second sub-layer 72 located in the second area Q2, the first sub-layer 71 at least partially overlaps the first spacer 41 in a direction perpendicular to the light emitting surface OU of the display panel, the second sub-layer 72 at least partially overlaps the second spacer 42, and the height of the first sub-layer 71 is smaller than that of the second sub-layer 72 in the direction perpendicular to the light emitting surface OU of the display panel;
and/or, in the non-opening area NG, the first insulating layer 8 includes a first sub insulating layer 81 located in the first area Q1 and a second sub insulating layer 82 located in the second area Q2, the first sub insulating layer 81 and the first spacer 41 at least partially overlap in a direction perpendicular to the light emitting surface OU of the display panel, the second sub insulating layer 82 and the second spacer 42 at least partially overlap, and a height of the first sub insulating layer 81 is smaller than a height of the second sub insulating layer 82 in the direction perpendicular to the light emitting surface OU of the display panel.
Specifically, the cross-sectional views in fig. 7 to 9 also show the transistor driving the sub-pixel P, the first planarization layer 6 further includes a second metal layer 12 and a third metal layer 11 on the side close to the second substrate 5, the second metal layer 12 serves as the source and the drain of the transistor, the third metal layer 11 serves as the gate of the transistor, the third metal layer 11 further includes an active layer 10 on the side close to the second substrate 5, the active layer 10 serves as the semiconductor of the transistor, the buffer layer 9 is further shown between the active layer 10 and the second substrate 5, of course, there is an insulating layer 13 between the active layer 10 and the third metal layer 11, and between the third metal layer 11 and the second metal layer 12, and the second substrate 5, the buffer layer 9 and the insulating layer 13 are not filled with patterns.
It is understood that the planarization layer can be made thicker in general, so the surface is flatter after planarization, but the first insulating layer 8 on the first metal layer 7 is thinner in general, so the surface of the first insulating layer 8 near the first substrate 1 is not flat.
In fig. 7 to 9, the step dc on the first substrate 1 side is 0, but it is needless to say that the step dc on the first substrate 1 side may not be 0, and the step is not particularly limited here.
Only in the non-opening area NG, shown in fig. 7, the first metal layer 7 includes a first sub-layer 71 located in the first area Q1 and a second sub-layer 72 located in the second area Q2, the first sub-layer 71 at least partially overlaps the first spacer 41 in the direction perpendicular to the light emitting surface OU of the display panel, and the second sub-layer 72 at least partially overlaps the second spacer 42, and the height of the first sub-layer 71 is smaller than that of the second sub-layer 72 in the direction perpendicular to the light emitting surface OU of the display panel, of course, when the thickness of the first insulating layer 8 is relatively uniform, that is, the thickness corresponding to the first sub-layer 71 is equal to that corresponding to the second sub-layer 72; only in the non-opening area NG, the first insulating layer 8 includes a first sub-insulating layer 81 located in the first area Q1 and a second sub-insulating layer 82 located in the second area Q2, the first sub-insulating layer 81 and the first spacer 41 at least partially overlap in a direction perpendicular to the light emitting surface OU of the display panel, the second sub-insulating layer 82 and the second spacer 42 at least partially overlap, and the height of the first sub-insulating layer 81 is smaller than that of the second sub-insulating layer 82 in the direction perpendicular to the light emitting surface OU of the display panel, at which time, the thickness of the first metal layer 7 is uniform, that is, the thickness at the corresponding first sub-layer 71 is equal to the thickness at the corresponding second sub-layer 72; in fig. 9, it is shown that the height of the first sub-layer 71 is smaller than that of the second sub-layer 72 in the direction perpendicular to the light emitting surface OU of the display panel, and the height of the first sub-insulating layer 81 is smaller than that of the second sub-insulating layer 82.
In the embodiment of fig. 7, 8 and 9, by making the step difference d of the second substrate 2 side in the second region Q2 T 2 is larger than the step d of the second substrate 2 side in the first region Q1 T 1, that is, in the direction perpendicular to the light emitting surface OU of the display panel, in the non-opening area NG, the height difference between the surface of the second substrate 2 in the second area Q2 and the surface of the second substrate 2 in the opening area G is larger than the height difference between the surface of the second substrate 2 in the first area Q1 and the surface of the second substrate 2 in the opening area G, and the compression ratio K according to the spacer 4 is (H + d) T +d C -d h ) It can be seen that the compression ratio of the spacers 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacers 4 in the first region Q1 at the top, so that the cell thickness of the liquid crystal cell in the second region Q2 is maintained unchanged by the fact that the spacers 4 themselves in the second region Q2 have a higher compression ratio in the vertically-arranged display panel 000 under a high-temperature environment for a long time, and thus the gravity Mura does not occur in the second region Q2 at the bottom of the display panel, and the reliability of the display panel is improved.
Of course, in this embodiment, the gravity Mura can be improved while the first planarizing layer 6 and/or the first metal layer 7 are/is formed, and the forming process can be simplified without additionally increasing the forming process.
In some alternative embodiments, referring to fig. 10, fig. 10 is a cross-sectional view along direction D-D' in fig. 3, fig. 10 is a state where the liquid crystal cell is in a cell, and with continued reference to fig. 3, the second substrate 2 includes a second substrate 5, and a first planarization layer 6 on the side of the second substrate 5 close to the first substrate 1, and a first metal layer 7 on the side of the first planarization layer 6 close to the first substrate 1;
in the non-opening area NG, the first metal layer 7 includes a first hollow portion 70, and the first hollow portion 70 at least partially overlaps the first spacer 41 in a direction perpendicular to the light emitting surface OU of the display panel.
Fig. 10 is a cross-sectional view also showing a transistor for driving the sub-pixel P, and further includes a second metal layer 12 and a third metal layer 11 on a side of the first planarization layer 6 close to the second substrate 5, where the second metal layer 12 serves as a source and a drain of the transistor, the third metal layer 11 serves as a gate of the transistor, an active layer 10 on a side of the third metal layer 11 close to the second substrate 5, and the active layer 10 serves as a semiconductor of the transistor, and further shows that a buffer layer 9 is further included between the active layer 10 and the second substrate 5, and of course, an insulating layer 13 is provided between the active layer 10 and the third metal layer 11, and between the third metal layer 11 and the second metal layer 12, and the second substrate 5, the buffer layer 9 and the insulating layer 13 are not pattern-filled. The cross-sectional view in fig. 10 fails to show the drain of the transistor.
In fig. 10, the first metal layer 7 may be a metal layer extending in the second direction Y, and the first metal layer 7 is provided with a first hollow portion 70 corresponding to the position of the first spacer 41, and the hollow portion is formed by a patterning method, so that the compression ratio of the first spacer 41 is reduced correspondingly, and the compression ratio of the first spacer 41 is smaller than that of the second spacer 42.
In the present embodiment, the first hollow portion 70 is disposed at the position of the first metal layer 7 corresponding to the first spacer 41, that is, the step difference of the first region Q1 on the side of the second substrate 2 is smaller than the step difference of the second region Q2 on the side of the second substrate 2, and the compression ratio K according to the spacer 4 is (H + d) T +d C -d h ) It can be seen that the compression ratio of the spacers 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacers 4 in the first region Q1 at the top, so that the cell thickness of the liquid crystal cell in the second region Q2 is maintained unchanged by the spacers 4 themselves in the second region Q2 in the vertically-arranged display panel 000 under a high-temperature environment for a long time, and thus the gravity Mura does not occur in the second region Q2 at the bottom of the display panel, and the display is improvedThe reliability of the panel is shown.
Of course, in this embodiment, the gravity Mura can be improved while the first planarizing layer 6 is formed, and the formation process can be simplified without additionally increasing the formation process.
In some optional embodiments, with reference to fig. 10, the display panel 000 includes touch electrode lines 14, the first metal layer 7 is reused as the touch electrode lines 14, at least a portion of the touch electrode lines 14 are dummy touch lines 140, and the first hollow portion 70 is located on the dummy touch lines 140.
It can be understood that, usually, the first metal layer 7 can be used as the touch electrode line 14, and for the display panel 000 with a touch function, a touch signal is transmitted to the touch electrode through the touch electrode line 14, a common electrode in the display panel 000 is usually reused as the touch electrode, and the touch electrode is connected to the touch electrode line 14 through a via hole. The touch electrode lines 14 are generally arranged along the second direction Y extending along the first direction X, wherein a portion of the touch electrode lines 14 is a dummy touch line 140, the dummy touch line 140 is not electrically connected to the touch electrode and is only used for balancing voltage signals in the panel, and since the dummy touch line 140 is not used for signal transmission, the first hollow portion 70 can be disposed on the dummy touch line 140 without affecting propagation of the touch signal. Of course, at the same time, because the first hollow-out portion 70 is provided, that is, the level difference of the second substrate 2 side in the first region Q1 is smaller than the level difference of the second substrate 2 side in the second region Q2, the compression ratio of the spacer 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacer 4 in the first region Q1 at the top, so that the gravity Mura does not occur in the second region Q2 at the bottom of the display panel.
In some alternative embodiments, referring to FIG. 11, FIG. 11 is a further cross-sectional view in the direction C-C' of FIG. 3, and FIG. 11 is a state in which the liquid crystal cell is in the cell state. In fig. 11, the second substrate 2 includes a second base substrate 5 and a first planarizing layer 6 on a side of the second base substrate 5 close to the first substrate 1, and a pixel electrode layer 15 on a side of the first planarizing layer 6 close to the first substrate 1, and the pixel electrode layer 15 includes a pixel electrode 150, and includes a first electrode portion 151 in the first region Q1 and a second electrode portion 152 in the second region Q2;
in the non-opening area NG, the first electrode portions 151 and the first spacers 41 at least partially overlap in a direction perpendicular to the light emitting surface OU of the display panel, the second electrode portions 152 and the second spacers 42 at least partially overlap, and the height of the first electrode portions 151 is smaller than that of the second electrode portions 152 in the direction perpendicular to the light emitting surface OU of the display panel.
Specifically, the display panel 000 is provided with a pixel electrode 150, and certainly further includes a common electrode (not shown in the figure), a voltage difference between the pixel electrode 150 and the common electrode drives liquid crystal to deflect to realize image display, the pixel electrode 150 is electrically connected to a drain of a transistor through a via hole, the transistor is also shown in the cross-sectional view of fig. 11, when the pixel electrode layer 15 is manufactured, a first electrode portion 151 is arranged at a position of the first region Q1 corresponding to the first spacer 41, a second electrode portion 152 is arranged at a position of the second region Q2 corresponding to the second spacer 42, and the first electrode portion 151 and the second electrode portion 152 are manufactured in the same process as the pixel electrode 150, so that no process step is added, and certainly no signal is input into the first electrode portion 151 and the second electrode portion 152 here.
Fig. 11 is a cross-sectional view also showing a transistor for driving the sub-pixel P, and further includes a second metal layer 12 and a third metal layer 11 on a side of the first planarization layer 6 close to the second substrate 5, where the second metal layer 12 serves as a source and a drain of the transistor, the third metal layer 11 serves as a gate of the transistor, an active layer 10 on a side of the third metal layer 11 close to the second substrate 5, and the active layer 10 serves as a semiconductor of the transistor, and further shows that a buffer layer 9 is further included between the active layer 10 and the second substrate 5, and of course, an insulating layer 13 is provided between the active layer 10 and the third metal layer 11, and between the third metal layer 11 and the second metal layer 12, and the second substrate 5, the buffer layer 9 and the insulating layer 13 are not pattern-filled.
In the first region Q1, the first electrode portions 151 may not be provided at positions corresponding to the first spacers 41, that is, the height of the first electrode portions 151 in the first region Q1 may be 0.
In the direction perpendicular to the light emitting surface OU of the display panel, the height of the first electrode part 151 is less than that of the second electrode part 152, that is, the step difference of the second substrate 2 side in the first region Q1 is less than that of the second substrate 2 side in the second region Q2, so that the compression ratio of the spacer 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacer 4 in the first region Q1 at the top, and thus, in the vertically placed display panel 000, under a high-temperature environment for a long time, the cell thickness of the liquid crystal cell in the second region Q2 is maintained to be unchanged by the spacer 4 itself having a higher compression ratio in the second region Q2, so that the gravity Mura does not occur in the second region Q2 at the bottom of the display panel, and the reliability of the display panel is improved.
Of course, in this embodiment, the gravity Mura can be improved while the pixel electrode layer 15 is manufactured, and the manufacturing process can be simplified without additionally increasing the manufacturing process.
In some alternative embodiments, referring to fig. 12, fig. 12 is a cross-sectional view along direction C-C' of fig. 3, fig. 12 is a state that the liquid crystal cell is in a cell state, and in fig. 12, the second substrate 2 includes a second substrate 5 and a black matrix 16 located on a side of the second substrate 5 adjacent to the first substrate 1;
in the non-opening area NG, the black matrix 16 includes a first black matrix 161 positioned in the first area Q1 and a second black matrix 162 positioned in the second area Q2, the first black matrix 161 and the first spacer 41 at least partially overlap in a direction perpendicular to the light emitting surface OU of the display panel, the second black matrix 162 and the second spacer 42 at least partially overlap, and the height of the first black matrix 161 is smaller than the height of the second black matrix 162 in the direction perpendicular to the light emitting surface OU of the display panel.
Specifically, the present embodiment is based on a COA structure in which the black matrix 16 is disposed on the array substrate (the second substrate 2) side. Of course, the cross-sectional view of fig. 12 also shows the transistor for driving the sub-pixel P, the first planarization layer 6 further includes a second metal layer 12 and a third metal layer 11 on the side close to the second substrate 5, the second metal layer 12 serves as the source and the drain of the transistor, the third metal layer 11 serves as the gate of the transistor, the third metal layer 11 further includes an active layer 10 on the side close to the second substrate 5, the active layer 10 serves as the semiconductor of the transistor, the buffer layer 9 is further shown between the active layer 10 and the second substrate 5, and of course, there is an insulating layer 13 between the active layer 10 and the third metal layer 11, and between the third metal layer 11 and the second metal layer 12, and the second substrate 5, the buffer layer 9 and the insulating layer 13 are not filled with patterns. In addition, fig. 12 also shows the pixel electrode layer 15 on the side of the first insulating layer 8 close to the first substrate 1, the pixel electrode layer 15 includes a pixel electrode 150, the side of the pixel electrode layer 15 close to the first substrate 1 also has an insulating layer, and the black matrix 16 is disposed on the insulating layer.
When the black matrix 16 is disposed in the second substrate 2, the black matrix 16 is closer to the liquid crystal molecules 3. At this time, in the non-opening area NG, the thickness of the first black matrix 161 in the first area Q1 is smaller than the thickness of the second black matrix 162, which is equivalent to that the step difference of the second substrate 2 side in the first area Q1 is smaller than the step difference of the second substrate 2 side in the second area Q2, so that the compression ratio of the spacer 4 in the second area Q2 at the bottom of the display panel is greater than that of the spacer 4 in the first area Q1 at the top, so that the cell thickness of the liquid crystal cell in the second area Q2 is maintained unchanged by the spacer 4 itself having a higher compression ratio in the second area Q2 under a high temperature environment for a long time, and thus the reliability of the display panel is improved without the occurrence of gravity Mura in the second area Q2 at the bottom of the display panel.
Of course, in this embodiment, the gravity Mura can be improved while the black matrix 16 is manufactured, and the manufacturing process can be simplified without additionally increasing the manufacturing process.
In some alternative embodiments, with continued reference to fig. 4, the uncompressed height of the first spacers 41 is smaller than the uncompressed height of the second spacers 42 in the direction perpendicular to the light emitting surface OU of the display panel.
It should be noted that the uncompressed height may also refer to a height at which the liquid crystal cell is disassembled after being disassembled, specifically, the initial height of the first spacer in the first region and the initial height of the second spacer in the second region may be different, and when the liquid crystal cell is disassembled, the first spacer 41 and the second spacer 42 are compressed to a certain degree due to external pressure, so that the cell thicknesses of the liquid crystal cells in the first region Q1 and the second region Q2 are the same, but after the liquid crystal cell is disassembled, the first substrate 1 and the second substrate 2 are separated, the external pressure is removed, and the first spacer 41 and the second spacer 42 rebound to a certain height due to elasticity of their own materials, and the height at which the rebound is the uncompressed height.
As can be seen from fig. 4, the uncompressed height of the first spacer 41 is smaller than the uncompressed height of the second spacer 42, i.e. H1 < H2, depending on the compression ratio K of spacer 4 (H + d) T +d C -d h ) It can be seen that when H1 < H2, K1 < K2 can be made as well, that is, the compression ratio of the spacers 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacers 4 in the first region Q1 at the top, so that the cell thickness of the liquid crystal cell in the second region Q2 can be maintained unchanged by the spacers 4 themselves having higher compression ratios in the second region Q2 under a high temperature environment for a long time, and thus the gravity Mura of the second region Q2 at the bottom of the display panel can be avoided, and the reliability of the display panel can be improved.
In some alternative embodiments, referring to FIG. 13, FIG. 13 is a further cross-sectional view taken along line C-C' of FIG. 3, and FIG. 13 is a liquid crystal cell in a cell state. In fig. 13, the first substrate 1 includes a first substrate 17 and a second planarization layer 19 on the side of the first substrate 17 close to the second substrate 2, and the spacer 4 is on the side of the second planarization layer 19 close to the second substrate 2;
in the non-opening area NG, the second planarization layer 19 includes a first sub-portion 191 and a second sub-portion 192, the first sub-portion 191 overlaps the first spacer 41 in a direction perpendicular to the light emitting surface OU of the display panel, the second sub-portion 192 overlaps the second spacer 42, and a height of the first sub-portion 191 is smaller than a height of the second sub-portion 192 in the direction perpendicular to the light emitting surface OU of the display panel.
Specifically, in the embodiment, the first substrate 1 further includes a color resistor 18 located on a side of the first substrate 17 close to the second substrate 2, and since the side of the first substrate 1 close to the second substrate 2 is not flat when the color resistor 18 and the black matrix 16 are fabricated, the second planarization layer 19 is usually used for planarization, that is, the side of the black matrix 16 and the color resistor 18 close to the second substrate 2 is planarizedA planarization layer 19, and a spacer 4 is disposed on the second planarization layer 19 near the second substrate 2. In the non-opening area NG, the height of the first sub-portion 191 corresponding to the first spacer 41 is smaller than the height of the second sub-portion 192 corresponding to the second spacer 42, that is, in the direction perpendicular to the light emitting surface OU of the display panel, the first sub-portion 191 overlaps the first spacer 41, the second sub-portion 192 overlaps the second spacer 42, and the height of the first sub-portion 191 in the direction perpendicular to the light emitting surface OU of the display panel is smaller than the height of the second sub-portion 192, so that the step corresponding to the first substrate 1 side in the first area Q1 is smaller than the step corresponding to the first substrate 1 side in the second area Q2, and the compression ratio K (H + d) of the spacer 4 is determined according to the compression ratio K (H + d) of the spacer 4 T +d C -d h ) It can be seen that the compression ratio of the spacers 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacers 4 in the first region Q1 at the top, so that the cell thickness of the liquid crystal cell in the second region Q2 is maintained unchanged by the fact that the spacers 4 themselves in the second region Q2 have a higher compression ratio in the vertically-arranged display panel 000 under a high-temperature environment for a long time, and thus the gravity Mura does not occur in the second region Q2 at the bottom of the display panel, and the reliability of the display panel is improved.
Of course, in this embodiment, the gravity Mura can be improved while the second planarization layer 19 is formed, and the formation process can be simplified without additionally increasing the formation process.
In some alternative embodiments, referring to fig. 14, fig. 14 is a schematic plan view illustrating a display panel according to still another embodiment of the present invention, in fig. 14, in the first direction X, a width of the first region Q1 is greater than a width of the second region Q2, a direction pointing to the binding region BD from the first region Q1 is a second direction Y, and the second direction Y intersects with the first direction X.
Fig. 14 schematically shows that the display panel 000 is a T-shaped display panel 000, but the display panel 000 may have another shape. Of course, the width of the first region Q1 in the first direction X is greater than the width of the second region Q2, when the display panel 000 is vertically placed, gravity Mura is more likely to occur in the display panel 000 in a long-time working state, liquid crystal is more likely to gather at the bottom of the screen, the cell thickness of the liquid crystal cell is increased, and the phenomenon that the second region Q2 of the display panel is yellow occurs. In this embodiment, the compression ratio of the spacer 4 in the second region Q2 at the bottom of the display panel is greater than that of the spacer 4 in the first region Q1 at the top, so that the gravity Mura can be improved more effectively, and the reliability of the display panel is improved.
In some alternative embodiments, please refer to fig. 15, where fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the display device 111 according to this embodiment includes the display panel 000 according to the above embodiment of the present invention. Optionally, the display device 111 of this embodiment further includes a frame, and the display panel 000 is fixed in the frame, and the frame is used for protecting the display panel. In the embodiment of fig. 15, only the on-vehicle display device is taken as an example, and the display device 111 is described, when the display device 111 of the present embodiment is applied to the on-vehicle display system, the vehicle may include the main driving seat 50, the center console 60, and the passenger seat 70, and the display device 111 may be located inside the center console 60 or at the position of the passenger seat 70, that is, the display device 111 may be a display device located at the position of the center console 60 (as shown in fig. 15) or a display device located at the position of the passenger seat 70 (not shown). It should be understood that the display device 111 provided in the embodiment of the present invention may also be other display devices 111 with a display function, such as a computer and a television, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display panel provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel in each of the above embodiments, which is not repeated herein.
According to the embodiment, the display panel and the display device provided by the invention at least realize the following beneficial effects:
the display panel comprises a liquid crystal box, wherein the liquid crystal box comprises a first substrate and a second substrate which are arranged oppositely, the display panel comprises a display area and a non-display area which at least partially surrounds the display area, and sub-pixels of the display area comprise an opening area and a non-opening area; the non-opening area comprises a spacer between the first substrate and the second substrate, and the spacer is positioned on one side of the first substrate close to the second substrate; the display area comprises a first area and a second area, the non-display area comprises a binding area, the first area is located on one side, away from the binding area, of the second area, the spacers comprise a first spacer located in the first area and a second spacer located in the second area, and the compression ratio of the first spacer is smaller than that of the second spacer. In the prior art, the compression ratios of the spacers in the first area and the second area are equal, so that the density of liquid crystal molecules of a vertically placed display panel is reduced in a long-time high-temperature environment, the compression ratio of the spacers is low, the fluidity of liquid crystal is enhanced at high temperature, the liquid crystal is gathered at the bottom of a screen under the effect of gravity, the thickness of a liquid crystal box is increased, and the second area of the display panel is yellow. In the invention, the compression ratio of the spacer in the second area at the bottom of the display panel is greater than that of the spacer in the first area at the top, so that the vertically placed display panel maintains the thickness of the liquid crystal box in the second area unchanged under a long-time high-temperature environment through the high compression ratio of the spacer in the second area, and the gravity Mura does not appear in the second area at the bottom of the display panel, thereby improving the reliability of the display panel.
Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (9)

1. A display panel is characterized by comprising a liquid crystal box, wherein the liquid crystal box comprises a first substrate and a second substrate which are arranged oppositely, and a liquid crystal layer positioned between the first substrate and the second substrate, and the thickness of the liquid crystal box is d in the direction vertical to the light-emitting surface of the display panel h The display panel comprises a display area and a non-display area at least partially surrounding the display area, the display area comprises a plurality of sub-pixels, the sub-pixels comprise an opening area and a non-opening area surrounding the opening areaThe thickness of the liquid crystal box is the distance between one side of the first substrate close to the second substrate and one side of the second substrate close to the first substrate in the opening area;
in the non-opening area, a spacer is arranged between the first substrate and the second substrate and is positioned on one side of the first substrate close to the second substrate;
the display area comprises a first area and a second area, when the display panel is vertically placed, the second area is positioned at the bottom of the display panel, and the first area is positioned at the top of the display panel; the non-display area comprises a binding area, the first area is positioned on one side, far away from the binding area, of the second area, the spacers comprise a first spacer positioned in the first area and a second spacer positioned in the second area, and the compression rate of the first spacer is smaller than that of the second spacer; the compression rate of the spacer in the second zone gradually increases in a direction in which the first zone points to the bound zone;
the compression ratio K of the spacer is (H + d) T +d C -d h ) H, wherein H is the uncompressed height of the spacer in the direction vertical to the light-emitting surface of the display panel; in the direction perpendicular to the light-emitting surface of the display panel, the height difference between the surface of the first substrate in the non-opening area and the surface of the first substrate in the opening area is d C (ii) a In a direction perpendicular to the light-emitting surface of the display panel, a height difference between the surface of the second substrate in the non-opening region and the surface of the second substrate in the opening region is d T (ii) a D of the first zone T And d of said second region T Different, and/or d of said first zone C And d of said second region C Different.
2. The display panel according to claim 1, wherein the second substrate comprises a second substrate base plate, and a first planarization layer on a side of the second substrate base plate adjacent to the first substrate, a first metal layer on a side of the first planarization layer adjacent to the first substrate, and a first insulating layer on a side of the first metal layer adjacent to the first substrate;
in the non-opening area, the first metal layer comprises a first sublayer and a second sublayer, the first sublayer is located in the first area, the second sublayer is located in the second area, the first sublayer and the first spacer at least partially overlap in the direction perpendicular to the light-emitting surface of the display panel, the second sublayer and the second spacer at least partially overlap, and the height of the first sublayer is smaller than that of the second sublayer in the direction perpendicular to the light-emitting surface of the display panel;
and/or in the non-opening area, the first insulating layer comprises a first sub insulating layer positioned in the first area and a second sub insulating layer positioned in the second area, in the direction vertical to the light-emitting surface of the display panel, the first sub insulating layer and the first spacer are at least partially overlapped, the second sub insulating layer and the second spacer are at least partially overlapped, and in the direction vertical to the light-emitting surface of the display panel, the height of the first sub insulating layer is smaller than that of the second sub insulating layer.
3. The display panel according to claim 1, wherein the second substrate comprises a second base substrate, a first planarization layer on a side of the second base substrate adjacent to the first substrate, and a first metal layer on a side of the first planarization layer adjacent to the first substrate;
in the non-opening area, the first metal layer comprises a first hollow-out portion, and the first hollow-out portion and the first spacer are at least partially overlapped in a direction perpendicular to a light-emitting surface of the display panel.
4. The display panel according to claim 3, wherein the display panel comprises touch electrode lines, the first metal layer is reused as the touch electrode lines, at least a part of the touch electrode lines are virtual touch lines, and the first hollow portion is located on the virtual touch lines.
5. The display panel according to claim 1, wherein the second substrate includes a second base substrate, and a first planarizing layer on a side of the second base substrate close to the first substrate, a pixel electrode layer on a side of the first planarizing layer close to the first base substrate, the pixel electrode layer including a pixel electrode, and a first electrode portion in the first region and a second electrode portion in the second region;
in the non-opening area, the first electrode part and the first spacer are at least partially overlapped in a direction perpendicular to a light-emitting surface of the display panel, the second electrode part and the second spacer are at least partially overlapped, and the height of the first electrode part is smaller than that of the second electrode part in the direction perpendicular to the light-emitting surface of the display panel.
6. The display panel according to claim 1, wherein the second base plate comprises a second base plate and a black matrix on a side of the second base plate adjacent to the first base plate;
in the non-opening area, the black matrix comprises a first black matrix positioned in the first area and a second black matrix positioned in the second area, the first black matrix and the first spacer are at least partially overlapped in a direction perpendicular to a light-emitting surface of the display panel, the second black matrix and the second spacer are at least partially overlapped, and the height of the first black matrix is smaller than that of the second black matrix in the direction perpendicular to the light-emitting surface of the display panel.
7. The display panel of claim 1, wherein the uncompressed height of the first spacer is less than the uncompressed height of the second spacer in a direction perpendicular to the light exit surface of the display panel.
8. The display panel according to claim 1, wherein the width of the first region is larger than the width of the second region in a first direction, and wherein a direction from the first region to the binding region is a second direction, and wherein the second direction intersects the first direction.
9. A display device comprising the display panel according to any one of claims 1 to 8.
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