CN114967204A - Display panel and display device - Google Patents
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- CN114967204A CN114967204A CN202210629354.7A CN202210629354A CN114967204A CN 114967204 A CN114967204 A CN 114967204A CN 202210629354 A CN202210629354 A CN 202210629354A CN 114967204 A CN114967204 A CN 114967204A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 117
- 239000000758 substrate Substances 0.000 claims abstract description 43
- 238000004383 yellowing Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 36
- 238000002834 transmittance Methods 0.000 description 21
- 239000004973 liquid crystal related substance Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 12
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000005282 brightening Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910001006 Constantan Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- WBYRVEAPTWYNOX-UHFFFAOYSA-N [Fe].[Cd] Chemical compound [Fe].[Cd] WBYRVEAPTWYNOX-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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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
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
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- 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 embodiment of the application provides a display panel and a display device, wherein the display panel comprises a display area and a non-display area, the display area comprises a first area and a second area, and the first area is positioned between the non-display area and the second area; the display panel comprises a first substrate and a second substrate which are oppositely arranged, and the light valve medium layer and the heating electrode layer are both positioned between the first substrate and the second substrate; the heating electrode layer comprises a plurality of heating electrodes, and the plurality of heating electrodes comprise a first heating electrode and a second heating electrode; the first heating electrode is arranged in the first area, and the second heating electrode is arranged in the second area and used for heating the first area and the second area; the area of the first heating electrode is larger than that of the second heating electrode in a unit area; can reduce the temperature difference in first region and second region, reduce the transmissivity difference in first region and second region, display panel, display device appear yellowing, luminous problem all around can be solved to this application.
Description
[ technical field ] A method for producing a semiconductor device
The present disclosure relates to display technologies, and particularly to a display panel and a display device.
[ background of the invention ]
Currently, liquid crystal display devices are widely used due to their advantages of low power consumption, miniaturization, lightness and thinness, etc.
However, due to the characteristics of the liquid crystal molecules, the application scenario of the liquid crystal display device has a certain requirement for the ambient temperature. For example, since the vehicle is often in a special working environment, the vehicle-mounted liquid crystal display device needs to adapt to a large environmental temperature range, and sometimes even the vehicle-mounted liquid crystal display device is required to normally work in a temperature range of-20 ℃ to 55 ℃. When the liquid crystal display device is in a low-temperature environment, the response speed of the liquid crystal display device is slow, and normal display of the liquid crystal display device is seriously affected.
In order to ensure that liquid crystal molecules in the liquid crystal display device can still respond quickly in a low-temperature environment, a heating electrode is usually arranged in the liquid crystal display device, and after the heating electrode is arranged in the conventional liquid crystal display device, the problem of uneven display obviously occurs, so that the liquid crystal display device cannot normally display images.
[ application contents ]
In view of the above, embodiments of the present application provide a display panel and a display device.
In a first aspect, the present application provides a display panel, which includes a display area and a non-display area, wherein the display area includes a first area and a second area, and the first area is located between the non-display area and the second area; the display panel includes:
a first substrate;
the second substrate is arranged opposite to the first substrate;
a light valve medium layer located between the first substrate and the second substrate;
a heating electrode layer between the first substrate and the second substrate, the heating electrode layer including a plurality of heating electrodes therein;
wherein the plurality of heating electrodes comprise a first heating electrode and a second heating electrode; the first heating electrode is arranged in the first area and the second heating electrode is arranged in the second area; the area of the first heating electrode is larger than the area of the second heating electrode per unit area.
In one implementation form of the first aspect, the display area includes a plurality of sub-pixel areas; the plurality of sub-pixel regions comprise a first sub-pixel region and a second sub-pixel region, the first heating electrode is arranged in the first sub-pixel region, and the second heating electrode is arranged in the second sub-pixel region;
the area of the first heating electrode in the first sub-pixel region is larger than that of the second heating electrode in the second sub-pixel region.
In one implementation manner of the first aspect, the display panel further includes a pixel electrode layer located between the first substrate and the second substrate, the pixel electrode layer including a plurality of pixel electrodes;
wherein, in the sub-pixel region, the pixel electrode overlaps the heating electrode.
In one implementation manner of the first aspect, the pixel electrode comprises a plurality of electrically connected first branch electrodes, and the heating electrode located in the sub-pixel region comprises at least one second branch electrode;
the first branch electrode and the second branch electrode are the same in shape and extending direction.
In one implementation manner of the first aspect, the first branch electrode covers the second branch electrode in the sub-pixel region.
In an implementation manner of the first aspect, the number of the second branch electrodes included in the first sub-pixel region is greater than the number of the second branch electrodes included in the second sub-pixel region.
In one implementation manner of the first aspect, a width of the second branch electrode included in the first sub-pixel region is greater than a width of the second branch electrode included in the second sub-pixel region.
In one implementation manner of the first aspect, the display panel further includes an auxiliary heating electrode disposed on a side surface of the display panel.
In one implementation manner of the first aspect, the side surfaces of the display panel include a first side surface close to a light bar disposed in a backlight film layer; a first heat-conducting film is arranged on the first side surface.
In one implementation form of the first aspect, the display panel further includes a second heat conductive film covering the first region and at least part of the second region.
In one implementation manner of the first aspect, the display panel further includes a heat insulation film covering the first region.
In an implementation manner of the first aspect, the display panel further includes a support pillar disposed between the first substrate and the second substrate;
wherein a density of the support pillars in the first region is greater than a density of the support pillars in the second region.
In a second aspect, the present application provides a display device comprising the display panel as provided in the first aspect.
The display panel and the display device provided by the embodiment of the application have the advantages that the heating electrode which is larger than the area in the unit area of the second area is arranged in the unit area of the first area, the temperature difference between the first area and the second area is reduced, the transmittance difference between the first area and the second area is reduced, and therefore the problems of yellowing and brightening of the periphery of the display panel are solved. Therefore, the display panel and the display device provided by the embodiment of the application have better display brightness uniformity at all positions.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic plan view of the heater electrode layer of FIG. 2;
FIG. 4 is another schematic plan view of the heater electrode layer of FIG. 2;
fig. 5 is a schematic plan view illustrating a display panel according to an embodiment of the present invention;
FIG. 6 is a partial cross-sectional view of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention;
fig. 8 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention;
fig. 9 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention;
fig. 10 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention;
fig. 11 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
fig. 12 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
fig. 13 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
fig. 14 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 15 is a partial cross-sectional view of a display panel according to an embodiment of the present invention;
fig. 16 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
fig. 17 is a partial cross-sectional view of a display panel according to an embodiment of the invention;
fig. 18 is a schematic diagram of a display device according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application 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 be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the description herein, it is to be understood that the terms "substantially", "approximately", "about", "substantially", and the like, as used in the claims and the examples herein, are intended to be generally accepted as not being precise, within the scope of reasonable process operation or tolerance.
It should be understood that although the terms first, second, third, etc. may be used to describe the substrate, the sub-pixel region, the heating electrode, the branch electrode, the region, etc. in the embodiments of the present application, these directions, etc. should not be limited to these terms. These terms are only used to distinguish one direction or the like from another. For example, the first substrate may also be referred to as a second substrate, and similarly, the second substrate may also be referred to as a first substrate, without departing from the scope of embodiments of the present application.
The applicant provides a solution to the problems of the prior art through intensive research.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
As shown in fig. 1, a display panel 100 according to an embodiment of the present invention includes a display area AA and a non-display area NA, where the display area AA includes a first area 01 and a second area 02. Wherein the first area 01 is located between the non-display area NA and the second area 02. The first area 01 and the second area 02 are different areas in the display area AA, and the first area 01 is closer to the non-display area NA than the second area 02.
Fig. 2 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 2, the display panel 100 according to the embodiment of the invention includes a first substrate 101, a second substrate 102, a light valve medium layer 103, and a heating electrode layer 104. The first substrate 101 and the second substrate 102 are disposed opposite to each other, and the light valve medium layer 103 and the heating electrode layer 104 are both disposed between the first substrate 101 and the second substrate 102.
The light valve medium layer 103 can control whether the light incident on the backlight side of the display panel can be emitted from the light-emitting side of the display panel. For example, the light valve medium layer 103 may specifically be a liquid crystal layer including liquid crystal molecules, and in addition, the light valve medium layer 103 may also include other light valve medium materials.
The heating electrode layer 104 includes a plurality of heating electrodes 11, and the plurality of heating electrodes 11 includes a first heating electrode 111 and a second heating electrode 112; the first heating electrode 111 is disposed in the first region 01 and the second heating electrode 112 is disposed in the second region 02.
The inventor analyzes the display panel 100 and the working process thereof, and finds that, in the actual manufacturing process of the display panel, the transmittance of the edge area of the display panel 100 is increased due to factors such as the process, and the like, so that the problem of yellowing and brightening of the periphery of the display panel 100 occurs. After the heating electrode 11 is added to the display panel 100, because the heat dissipation speed of the first area 01 of the display panel 100 is much higher than the heat dissipation speed of the second area 02, the temperature of the first area 01 is lower than that of the second area 02, and the lower the temperature, the higher the transmittance of the panel is, the greater the transmittance difference between the first area 01 and the second area 02 is further increased, so that the more serious yellowing and brightening problems occur around the display panel 100, and the normal display picture of the display panel 100 is seriously affected.
FIG. 3 is a schematic plan view of the heater electrode layer of FIG. 2.
In one embodiment of the present invention, as shown in fig. 3, a plurality of first heating electrodes 111 having the same size are provided in the first region 01, and a plurality of second heating electrodes 112 having the same size are also provided in the second region 02, and it can be seen that the area of the first heating electrodes 111 in the first region 01 is larger than the area of the second heating electrodes 112 in the second region 02 per unit area, that is, the area of the first heating electrodes 111 in the first region 01 is larger than the area of the second heating electrodes 112 in the second region 02.
FIG. 4 is another schematic plan view of the heated electrode layer of FIG. 2.
In one embodiment of the present application, as shown in fig. 4, a plurality of first heating electrodes 111 whose areas gradually change are provided in a first region 01; and the farther away from the second region 02, the larger the area of the first heating electrode 111 per unit area. While a plurality of second heating electrodes 112 having the same size are disposed in the second region 02, it can be seen that the area of the first heating electrode 111 is larger than that of the second heating electrode 112 per unit area, i.e., the area of the first heating electrode 111 in the first region 01 is larger than that of the second heating electrode 112 in the second region 02.
With continued reference to fig. 3 and 4, it can be seen that when the first heating electrode 111 in the first region 01 and the second heating electrode 112 in the second region 02 are heated, the heating area in the first region 01 is larger than that in the second region 02 per unit area. Compared with the second area 02, the temperature of the first area 01 is increased to be larger, and the temperature difference between the first area 01 and the second area 02 is reduced, so that the transmittance difference between the first area 01 and the second area 02 is reduced, the problems of yellowing and lightening around the display panel are solved, and the display panel can normally display pictures.
Fig. 5 is a schematic plan view of a display panel according to an embodiment of the present invention.
As shown in fig. 5, the display area AA of the display panel 100 in this embodiment includes a plurality of gate lines 41 arranged along a first direction, a plurality of data lines 42 arranged along a second direction, and a plurality of sub-pixel areas 43 defined by the intersection of the plurality of data lines 42 and the plurality of gate lines 41. That is, the display area AA of the display panel 100 includes a plurality of sub-pixel areas 43.
In one embodiment of the present application, the plurality of sub-pixel regions 43 included in the display region AA includes a first sub-pixel region 431 and a second sub-pixel region 432.
Fig. 6 is a partial cross-sectional view of a display panel according to an embodiment of the invention, fig. 7 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention, and fig. 8 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention.
As shown in fig. 6, the display area AA includes a plurality of sub-pixel areas 43, and the plurality of sub-pixel areas 43 includes a first sub-pixel area 431 and a second sub-pixel area 432. The first heating electrode 111 is disposed in the first sub-pixel region 431, and the second heating electrode 112 is disposed in the second sub-pixel region 432.
As shown in fig. 7 and 8, the area of the first heating electrode 111 in the first sub-pixel region 431 is larger than the area of the second heating electrode 112 in the second sub-pixel region 432. That is, the area of the first heating electrode 111 disposed in each sub-pixel region 43 of the first region 01 is larger than the area of the second heating electrode 112 disposed in each sub-pixel region 43 of the second region 02.
That is, in the present embodiment, at least a part of the heating electrode 11 is disposed in the sub-pixel region 43, and the area of the heating electrode 11 disposed in the sub-pixel region 43 of the first region 01 is larger than the area of the heating electrode 11 disposed in the sub-pixel region 43 of the second region 02.
In the technical scheme, the area of the first heating electrode 111 of the first sub-pixel area 431 is larger than the area of the second heating electrode 112 of the second sub-pixel area 432, so that the display panel 100 has a larger heating metal area in the first area 01, the temperature of the first area 01 is increased, the transmittance of the first area 01 is reduced, the difference between the transmittances of the first area 01 and the second area 02 is reduced, the problems of yellowing and lightening around the display panel 100 are solved, and the display panel can normally display pictures.
In addition, as shown in fig. 6, the display panel 100 provided in the embodiment of the present application further includes a pixel electrode layer 105 and a common electrode layer 106, and both the pixel electrode layer 105 and the common electrode layer 106 are located between the first substrate 101 and the second substrate 102. The pixel electrode layer 105 may be provided in the same layer as the common electrode layer 106, in the same layer as another conductive layer, or in a single layer.
The pixel electrode layer 105 includes a plurality of pixel electrodes 21, wherein the pixel electrodes 21 overlap the heating electrodes 11 in the sub-pixel region 43. That is, along the thickness direction of the display panel 100, the projection of the pixel electrode 21 in the same sub-pixel region 43 overlaps the projection of the heating electrode 11.
Specifically, the plurality of pixel electrodes 21 include a first pixel electrode 211 and a second pixel electrode 212; the first pixel electrode 211 and the second pixel electrode 212 are respectively disposed in the first sub-pixel region 431 and the second sub-pixel region 432. And the first pixel electrode 211 overlaps the first heating electrode 111, i.e. along the thickness direction of the display panel 100, the projection of the first pixel electrode 211 located in the first sub-pixel region 431 coincides with the projection of the first heating electrode 111; the second pixel electrode 212 overlaps the second heating electrode 112, that is, a projection of the second pixel electrode 212 located in the second sub-pixel area 432 coincides with a projection of the second heating electrode 112 along the thickness direction of the display panel 100.
Preferably, the heating electrode 11 is a transparent conductive electrode. Specifically, it may be ITO (indium tin oxide).
The pixel electrode 11 in the sub-pixel region 43 is typically a transparent conductive electrode, but also affects the transmittance of light, and overlapping the heating electrode 11 with the pixel electrode 21 can reduce the effect of the heating electrode 11 disposed in the sub-pixel region 43 on the transmittance of light.
In a technical solution of this embodiment, the heating electrode 11 is located on a side of the common electrode and the pixel electrode 21 away from the light valve medium layer 103, so as to avoid affecting the display of the display panel.
As shown in fig. 7 and 8, the pixel electrode 21 of the display panel 100 includes a plurality of electrically connected first branch electrodes 21a, and the first branch electrodes 21a extend along the first direction X; the heater electrode 11 in the sub-pixel region includes at least one second branch electrode 11a, and the second branch electrode 11a also extends along the first direction X. That is, as shown in fig. 7 and 8, the first branch electrode 21a included in the pixel electrode 21 and the second branch electrode 11a included in the heating electrode 11 have the same shape and the same extending direction.
For example, as shown in fig. 7, the first branch electrode 21a included in the pixel electrode 21 and the second branch electrode 11a included in the heating electrode 11 are both linear and extend in the same direction, and both extend in the first direction X.
For example, as shown in fig. 8, the first branch electrode 21a included in the pixel electrode 21 and the second branch electrode 11a included in the heating electrode 11 are both in a zigzag shape and extend in the same direction, and both extend in the first direction X.
In the sub-pixel region, the first branch electrode 21a covers the second branch electrode 11 a. As shown in fig. 7 and 9, the first branch electrode 21a of the first pixel electrode 211 covers the second branch electrode 11a of the first heating electrode 111, and the first branch electrode 21a of the second pixel electrode 212 covers the second branch electrode 11a of the second heating electrode 112.
In the sub-pixel region, the first branch electrode 21a covers the second branch electrode 11a, and the influence of the second branch electrode 11a in the heating electrode 11 disposed in the sub-pixel region 43 on the light transmittance can be reduced.
Fig. 9 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention.
As shown in fig. 9, in the present embodiment, the number of the second branch electrodes 11a included in the first sub-pixel area 431 is set to be greater than the number of the second branch electrodes 11a included in the second sub-pixel area 432. That is, the number of the second branch electrodes 11a disposed in each sub-pixel region of the first region is greater than the number of the second branch electrodes 11a disposed in each sub-pixel region of the second region.
In the present technical solution, the number of the second branch electrodes 11a included in the first sub-pixel area 431 is set to be greater than the number of the second branch electrodes 11a included in the second sub-pixel area 432, so that the display panel 100 has a larger metal heating area in the first area 01, the temperature of the first area 01 is increased, the transmittance of the first area 01 is reduced, the difference between the transmittances of the first area 01 and the second area 02 is reduced, the problem of yellowing and shining around the display panel 100 is solved, and the display panel can normally display images.
As shown in fig. 7 and 8, in the present embodiment, the width of the second branch electrode 11a included in the first sub-pixel area 431 is set to be greater than the width of the second branch electrode 11a included in the second sub-pixel area 432.
That is, the width of the second branch electrode 11a disposed in each sub-pixel region of the first region is greater than the width of the second branch electrode 11a disposed in each sub-pixel region of the second region.
In this technical solution, the width of the second branch electrode 11a included in the first sub-pixel area 431 is set to be greater than the width of the second branch electrode 11a included in the second sub-pixel area 432, so that the display panel 100 has a larger heating metal area in the first area 01, the temperature of the first area 01 is increased, the transmittance of the first area 01 is reduced, the difference between the transmittances of the first area 01 and the second area 02 is reduced, the problem of yellowing and lightening around the display panel 100 is solved, and the display panel can normally display images.
Fig. 10 is a schematic projection diagram of a pixel electrode and a heating electrode according to an embodiment of the invention.
As shown in fig. 10, in the present embodiment, the number of the second branch electrodes 11a included in the first sub-pixel area 431 is set to be greater than the number of the second branch electrodes 11a included in the second sub-pixel area 432, and the width of the second branch electrodes 11a included in the first sub-pixel area 431 is set to be greater than the width of the second branch electrodes 11a included in the second sub-pixel area 432. That is, the number and width of the second branch electrodes 11a disposed in each sub-pixel region of the first region 01 are greater than the number and width of the second branch electrodes 11a disposed in each sub-pixel region of the second region 02.
In this technical solution, the number and the width of the second branch electrodes 11a included in the first sub-pixel area 431 are set to be greater than the number and the width of the second branch electrodes 11a included in the second sub-pixel area 432, so that the display panel 100 has a larger metal heating area in the first area 01, the temperature of the first area 01 is increased, the transmittance of the first area 01 is reduced, the difference between the transmittances of the first area 01 and the second area 02 is reduced, the problem of yellowing and lightening around the display panel 100 is solved, and the display panel can normally display images.
Fig. 11 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 11, the display panel 100 further includes an auxiliary heating electrode 31, the auxiliary heating electrode 31 is disposed on a side surface of the display panel 100, the temperature of the first region 01 of the display panel 100 can be raised by disposing the auxiliary heating electrode 31, the transmittance of the first region 01 is reduced, so that the difference between the transmittances of the first region 01 and the second region 02 is reduced, the problems of yellowing and lightening around the display panel 100 are solved, and the display panel can display images normally.
Fig. 12 is a partial cross-sectional view of a display panel according to an embodiment of the invention, and fig. 13 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 12 and 13, the side surfaces of the display panel 100 include first side surfaces close to the light bars disposed in the backlight film 108; the first side surface is provided with a first heat conductive film 107. The first thermal conductive film 107 is typically made of iron-cadmium alloy or constantan or copper film, but may be made of other materials with better thermal conductivity, and is not limited herein. The display panel 100 may adopt two backlight modes, namely a direct type backlight mode and a side type backlight mode.
For example, as shown in fig. 12, the display panel 100 employs a direct-type backlight, and the backlight module layer 108 is disposed directly under the display panel 100, so that the LED lamps in the same row can be regarded as one light bar, and the LED lamps in the same column can be regarded as one light bar. Each side of the display panel can be considered as a first side surface adjacent to the light bar. Set up first heat conduction membrane 107 on the first side surface, when the lamp strip in the rete 108 of being shaded is luminous, the light that led lamp strip sent can be converted into certain heat, because of the lamp strip is connected with display panel 100's first side, and this part heat that the lamp strip gived off can transmit to display panel 100's first side through first heat conduction membrane 107, improves display panel 100's first region 01's temperature.
For example, as shown in fig. 13, the display panel 100 is a side-in type backlight, the backlight module layer 108 is disposed below the display panel 100, an LED light bar is disposed in the backlight module layer 108, the light bar is connected to the first side surface of the display panel 100, and the first heat-conducting film 107 is disposed on the first side surface, when a light bar in the backlight module layer 108 emits light, the whole backlight module layer 108 can be driven to emit light, the emitted light can be converted into certain heat, because the light bar is connected to the first side surface of the display panel 100, the part of the heat emitted by the light bar can be transmitted to the first side surface of the display panel 100 through the first heat-conducting film 107, so as to increase the temperature of the first area 01 of the display panel 100.
In this technical scheme, set up first heat conduction membrane 107 on the first side surface of the lamp strip that sets up in including being close to the rete 108 in being shaded in the side surface of display panel 100, first heat conduction membrane 107 can give first region 01 with the better conduction of the heat that the lamp strip gived off, the temperature of first region 01 of display panel 100 is improved, the transmissivity of first region 01 has been reduced, make the difference of the transmissivity of first region 01 and second region 02 reduce, improve display panel 100 and appear yellowing, the problem of shining all around, make display panel can normal display picture.
Fig. 14 is a partial cross-sectional view of a display panel according to an embodiment of the invention, and fig. 15 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 14 and 15, the display panel 100 further includes a second thermal conductive film 109, wherein the second thermal conductive film 109 covers the first region 01 and at least a portion of the second region 02. The second thermal conductive film 109 may be made of any material having a good thermal conductivity as the first thermal conductive film 107, and is not particularly limited herein.
Preferably, the second thermal conductive film 109 is provided on the backlight surface.
The second heat conductive film in the display panel 100 covers at least a partial region of the second region 02.
For example, as shown in fig. 14, the second thermal conductive film 109 in the display panel 100 is in full contact with the first region 01 and in contact with a part of the second region 02, and by providing the second thermal conductive film 109 in the display panel 100, heat in the second region 02 can be transferred to the first region 01, and a temperature difference between the first region 01 and the second region 02 can be reduced.
For example, as shown in fig. 15, the second thermal conductive film 109 in the display panel 100 covers the entire first area 01 and the entire second area 02, that is, the second thermal conductive film 109 in the display panel 100 is in contact with the entire first area 01 and the entire second area 02; by providing the second thermal conductive film 109 in the display panel 100, heat in the second region 02 can be transferred to the first region 01, and a temperature difference between the first region 01 and the second region 02 can be reduced.
In the present embodiment, the second thermal conductive film 109 covering the first region 01 and at least part of the second region 02 is added on the display panel 100, so that heat in the second region 02 can be transferred to the first region 01, the temperature difference between the first region 01 and the second region 02 is reduced, the difference between the transmittances of the first region 01 and the second region 02 is reduced, the problem of yellowing and shining around the display panel 100 is solved, and the display panel can normally display images.
Fig. 16 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 16, the display panel 100 further includes a heat insulating film 110. The thermal insulation film 110 covers the first region 01, and the thermal insulation film 110 may be an inorganic film layer, such as silicon nitride and/or silicon oxide, or other materials that do not easily conduct heat, and is not limited herein.
In the technical scheme, the heat insulation film 110 covering the first region 01 is arranged on the display panel 100, so that the heat dissipation of the first region 01 can be reduced, the temperature difference between the first region 01 and the second region 02 is reduced, the difference between the transmittances of the first region 01 and the second region 02 is reduced, the problems of yellowing and shining around the display panel 100 are solved, and the display panel can normally display pictures.
Fig. 17 is a partial cross-sectional view of a display panel according to an embodiment of the invention.
As shown in fig. 17, the display panel 100 further includes a supporting column 51, and the supporting column 51 is disposed between the first substrate 101 and the second substrate 102; wherein the density of the supporting columns 51 in the first region 01 is greater than the density of the supporting columns 51 in the second region 02. The supporting posts 51 are used for supporting the space between the first substrate 101 and the second substrate 102, where the supporting posts 51 include a main supporting post with a larger height and an auxiliary supporting post with a smaller height.
In the technical scheme, the density of the supporting columns 51 in the first area 01 is greater than that of the supporting columns 51 in the second area 02, so that the liquidity of the liquid crystal in the first area 01 is smaller, and the heat dissipation of the first area 01 caused by the flowing of the liquid crystal is reduced; meanwhile, the liquid crystal in the second area 02 has high fluidity, so that the heat dissipation of the second area 02 caused by the liquid crystal flow is increased, the temperature is balanced, the temperature difference between the first area 01 and the second area 02 is reduced, the transmittance difference between the first area 01 and the second area 02 is reduced, the problems of yellowing and shining around the display panel 100 are solved, and the display panel can normally display pictures.
Fig. 18 is a schematic diagram of a display device according to an embodiment of the present invention.
The display device provided by the embodiment of the invention can be normally started and operated in a low-temperature environment, the phenomena of yellowing and brightening do not occur around the display panel 100 of the display device, and the display device can normally display pictures. As shown in fig. 18, the display device includes the display panel 100 provided in any of the above embodiments, and a housing, where the housing forms an accommodating space for accommodating the display panel, and the housing may be rigid or flexible, and the present invention is not limited thereto. It should be understood that the display device provided in the embodiment of the present invention may be other display devices with a display function, such as a computer, a television, a vehicle-mounted display device, and the present invention is not limited thereto.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (13)
1. A display panel characterized in that the display panel comprises a display area and a non-display area, the display area comprises a first area and a second area, the first area is located between the non-display area and the second area; the display panel includes:
a first substrate;
the second substrate is arranged opposite to the first substrate;
a light valve medium layer located between the first substrate and the second substrate;
a heating electrode layer located between the first substrate and the second substrate, the heating electrode layer including a plurality of heating electrodes therein;
wherein the plurality of heating electrodes comprise a first heating electrode and a second heating electrode; the first heating electrode is arranged in the first area and the second heating electrode is arranged in the second area; the area of the first heating electrode is larger than the area of the second heating electrode per unit area.
2. The display panel according to claim 1, wherein the display region comprises a plurality of sub-pixel regions; the plurality of sub-pixel regions comprise a first sub-pixel region and a second sub-pixel region, the first heating electrode is arranged in the first sub-pixel region, and the second heating electrode is arranged in the second sub-pixel region;
the area of the first heating electrode in the first sub-pixel region is larger than that of the second heating electrode in the second sub-pixel region.
3. The display panel according to claim 2, further comprising a pixel electrode layer between the first substrate and the second substrate, the pixel electrode layer comprising a plurality of pixel electrodes;
wherein, in the sub-pixel region, the pixel electrode overlaps the heating electrode.
4. The display panel according to claim 3, wherein the pixel electrode comprises a plurality of electrically connected first branch electrodes, and the heating electrode in the sub-pixel region comprises at least one second branch electrode;
the first branch electrode and the second branch electrode are the same in shape and extending direction.
5. The display panel according to claim 4, wherein the first branch electrode overlaps the second branch electrode in the sub-pixel region.
6. The display panel according to claim 4, wherein the number of the second branch electrodes included in the first sub-pixel region is greater than the number of the second branch electrodes included in the second sub-pixel region.
7. The display panel according to claim 4, wherein a width of the second branch electrode included in the first sub-pixel region is larger than a width of the second branch electrode included in the second sub-pixel region.
8. The display panel according to claim 1, wherein the display panel further comprises an auxiliary heating electrode provided on a side surface of the display panel.
9. The display panel of claim 1, wherein the side surfaces of the display panel comprise a first side surface adjacent to a light bar disposed within a backlight film layer; a first heat-conducting film is arranged on the first side surface.
10. The display panel according to claim 1, further comprising a second thermally conductive film covering the first region and covering at least a portion of the second region.
11. The display panel according to claim 1, further comprising a heat insulating film in the display panel, wherein the heat insulating film covers the first region.
12. The display panel according to claim 1, further comprising a support pillar disposed between the first substrate and the second substrate;
wherein a density of the support pillars in the first region is greater than a density of the support pillars in the second region.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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| CN202210629354.7A CN114967204B (en) | 2022-05-31 | 2022-05-31 | Display panel and display device |
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| CN202210629354.7A CN114967204B (en) | 2022-05-31 | 2022-05-31 | Display panel and display device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050285986A1 (en) * | 2004-06-28 | 2005-12-29 | Lg.Philips Lcd Co., Ltd. | Liquid crystal display device |
| CN109031813A (en) * | 2018-08-31 | 2018-12-18 | 上海天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| KR20210073807A (en) * | 2019-12-11 | 2021-06-21 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
| CN113050319A (en) * | 2021-04-02 | 2021-06-29 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114442357A (en) * | 2021-12-31 | 2022-05-06 | 厦门天马微电子有限公司 | Display panel and display device |
-
2022
- 2022-05-31 CN CN202210629354.7A patent/CN114967204B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050285986A1 (en) * | 2004-06-28 | 2005-12-29 | Lg.Philips Lcd Co., Ltd. | Liquid crystal display device |
| CN109031813A (en) * | 2018-08-31 | 2018-12-18 | 上海天马微电子有限公司 | Liquid crystal display panel and liquid crystal display device |
| KR20210073807A (en) * | 2019-12-11 | 2021-06-21 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
| CN113050319A (en) * | 2021-04-02 | 2021-06-29 | 厦门天马微电子有限公司 | Display panel and display device |
| CN114442357A (en) * | 2021-12-31 | 2022-05-06 | 厦门天马微电子有限公司 | Display panel and display device |
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