CN114755857B - Display panel and display device - Google Patents
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- CN114755857B CN114755857B CN202210476084.0A CN202210476084A CN114755857B CN 114755857 B CN114755857 B CN 114755857B CN 202210476084 A CN202210476084 A CN 202210476084A CN 114755857 B CN114755857 B CN 114755857B
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 109
- 239000000758 substrate Substances 0.000 claims abstract description 67
- 239000011159 matrix material Substances 0.000 claims abstract description 65
- 238000010276 construction Methods 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 40
- 238000002834 transmittance Methods 0.000 abstract description 12
- 230000005684 electric field Effects 0.000 description 41
- 239000010408 film Substances 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 18
- 230000002708 enhancing effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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)
- Liquid Crystal (AREA)
- Geometry (AREA)
Abstract
The invention discloses a display panel and a display device, comprising a first substrate, a second substrate and liquid crystal molecules, wherein the first substrate and the second substrate are oppositely arranged; the first substrate comprises black matrixes, and openings are formed among the black matrixes; the second substrate comprises a pixel electrode, the pixel electrode comprises a first electrode and a second electrode which are electrically connected, the first electrode is overlapped with the opening in the direction perpendicular to the light emitting surface of the display panel, the second electrode is at least partially overlapped with the black matrix, and a space is reserved between the first electrode and the second electrode. According to the invention, the second electrode is independently arranged at the position corresponding to the black matrix, so that the quick response of liquid crystal molecules is realized on the premise of not influencing the transmittance.
Description
Technical Field
The present invention relates to the field of display technologies, and more particularly, to a display panel and a display device.
Background
Currently, display technology permeates all aspects of people's daily lives, and accordingly, more and more materials and technologies are used for display screens. The display panel is used as an important component of the display device to realize the display function of the display device. Nowadays, the main Display screen mainly includes a liquid crystal Display panel and an Organic Light-Emitting Display (OLED). The liquid crystal display panel has the advantages of light weight, low power consumption, low radiation and the like, and is widely applied to various fields. The liquid crystal display panel generally comprises a color film substrate, an array substrate and a liquid crystal layer between the color film substrate and the array substrate, wherein the color film substrate is arranged opposite to the array substrate, a black matrix and a color resistor are arranged on one side of the color film substrate, which is close to the array substrate, an electric field between a pixel electrode and a common electrode in the display panel can deflect liquid crystal molecules, light rays generated by a backlight assembly after the liquid crystal molecules are deflected can permeate the display panel, the deflection degree of the liquid crystal molecules can be different by adjusting the size of the electric field, and when the deflection degree of the liquid crystal molecules is different, the light transmittance of the display panel is different, and the light quantity of the backlight assembly penetrating the liquid crystal display panel is different, so that the display of images is realized. However, the problem of slow response speed of liquid crystal molecules exists at the edge of the pixel opening of the liquid crystal display panel in the prior art, which affects the overall display effect of the display panel.
Accordingly, there is a need to provide a display panel for realizing a fast response of liquid crystal molecules in the display panel.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device for improving the response speed of the display panel.
In one aspect, the present invention provides a display panel including first and second substrates disposed opposite to each other, and liquid crystal molecules interposed between the first and second substrates;
the first substrate comprises black matrixes, and openings are formed among the black matrixes;
the second substrate comprises a pixel electrode, the pixel electrode comprises a first electrode and a second electrode which are electrically connected, the first electrode is overlapped with the opening in the direction perpendicular to the light emitting surface of the display panel, the second electrode is at least partially overlapped with the black matrix, and a space is reserved between the first electrode and the second electrode.
On the other hand, the invention also provides a display device which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention have the advantages that at least the following effects are realized:
the display panel is a liquid crystal display panel and comprises a first substrate, a second substrate and liquid crystal molecules, wherein the first substrate and the second substrate are oppositely arranged; the first substrate comprises black matrixes, and openings are formed among the black matrixes; the second substrate comprises a pixel electrode, the pixel electrode comprises a first electrode and a second electrode which are electrically connected, the first electrode is overlapped with the opening in the direction perpendicular to the light emitting surface of the display panel, the second electrode is at least partially overlapped with the black matrix, and a space is reserved between the first electrode and the second electrode. In the prior art, as the distance between the liquid crystal at the edge of the opening and the first electrode is far, quick response cannot be realized, the second electrode is independently arranged at the position corresponding to the black matrix of the first substrate, the second electrode can control the quick response of the liquid crystal at the edge of the opening and the position of the black matrix, and the integral electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the position corresponding to the black matrix, so that the response speed of the display panel is improved.
Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages 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 related art;
FIG. 2 is a cross-sectional view taken along the direction A-A' in FIG. 1;
FIG. 3 is a schematic plan view of a display panel according to the present invention;
FIG. 4 is a schematic plan view of another display panel according to the present invention;
FIG. 5 is a schematic plan view of another display panel according to the present invention;
FIG. 6 is a schematic plan view of another display panel according to the present invention;
FIG. 7 is a cross-sectional view taken in the direction B-B' of FIG. 4;
FIG. 8 is a schematic plan view of another display panel according to the present invention;
FIG. 9 is a cross-sectional view taken along the direction C-C' in FIG. 8;
fig. 10 is a schematic plan view of a display panel according to still another embodiment of the present invention;
FIG. 11 is a schematic plan view of a display panel according to still another embodiment of the present invention;
FIG. 12 is a schematic plan view of a display panel according to still another embodiment of the present invention;
FIG. 13 is an enlarged view of a portion of region M of FIG. 12;
FIG. 14 is a further cross-sectional view taken along line C-C' of FIG. 8;
FIG. 15 is a schematic plan view of another display panel according to the present invention;
FIG. 16 is a schematic plan view of another display panel according to the present invention;
FIG. 17 is a schematic view of yet another planar structure provided by the present invention;
FIG. 18 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 19 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 20 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 21 is a schematic plan view of a display panel according to another embodiment of the present invention;
fig. 22 is a schematic structural diagram of a display device according to 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, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary 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 specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In view of the fact that the response speed of the liquid crystal molecules of the display panel in the related art is slow, the inventor has studied the related art, referring to fig. 1 and 2, fig. 1 is a schematic plan view of the display panel in the related art, fig. 2 is a cross-sectional view in A-A' direction in fig. 1, the display panel 000 includes a color film substrate 01 and an array substrate 02 which are disposed opposite to each other, and the liquid crystal molecules 03 are disposed between the color film substrate 01 and the array substrate 02, the color film substrate 01 includes a black matrix 04, the black matrix 04 includes an opening 05 therebetween, the array substrate 02 includes a pixel electrode 06 and a common electrode 021, and an electric field between the pixel electrode 06 and the common electrode 021 deflects the liquid crystal molecules 03, light is emitted from the opening 05, and since a front projection of the pixel electrode 06 on a light emitting surface of the display panel overlaps the opening 05, an electric field at an edge of the opening 05 and a position corresponding to the black matrix 04 is weak, that the electric field driving rotation of the liquid crystal molecules 03b is weak, thereby causing the response of the liquid crystal molecules to slow. In order to solve the problem of slow response of liquid crystal molecules in the related art, the method is generally implemented by reducing the thickness of a cell and adjusting the parameters of liquid crystal, but the rapid response of the liquid crystal achieved by the method at present brings loss of transmittance.
In order to solve the technical problem, the invention provides a display panel and a display device, which are used for realizing liquid crystal quick response on the premise of not losing the transmittance. With respect to specific embodiments of the display panel and the display device, detailed description will be made below.
Referring to fig. 3, 4, 5, 6 and 7, fig. 3 is a schematic plan view of a display panel according to the present invention, fig. 4 is a schematic plan view of a display panel according to the present invention, fig. 5 is a schematic plan view of a further display panel according to the present invention, fig. 6 is a schematic plan view of a further display panel according to the present invention, and fig. 7 is a cross-sectional view in a direction B-B' of fig. 4.
The display panel 100 provided in this embodiment includes a first substrate 1 and a second substrate 2 disposed opposite to each other, and liquid crystal molecules 3 interposed between the first substrate 1 and the second substrate 2; the first substrate 1 includes a black matrix 4 with openings 5 between the black matrices 4; the second substrate 2 comprises a pixel electrode 6, the pixel electrode 6 comprises a first electrode 7 and a second electrode 8 electrically connected, the first electrode 7 overlaps the opening 5 in a direction perpendicular to the light emitting surface 40 of the display panel, the second electrode 8 at least partially overlaps the black matrix 4, and a space 9 is provided between the first electrode 7 and the second electrode 8.
Specifically, fig. 3 and fig. 4 show that the second electrode 8 partially overlaps the black matrix 4 in a direction perpendicular to the light emitting surface of the display panel, and the second electrode 8 also partially overlaps the opening 5, and fig. 5 shows that the second electrode 8 is located within the black matrix 4 in a direction perpendicular to the light emitting surface of the display panel, and only the second electrode 8 partially overlaps the black matrix 4 in a direction perpendicular to the light emitting surface of the display panel.
Fig. 3 illustrates only four sub-pixels, and fig. 4 to 6 illustrate only one sub-pixel. The first electrode 7 in fig. 3, fig. 4 and fig. 5 is in a vertical domain design, the first electrode 7 in fig. 6 is in a horizontal domain design, and for the first electrode 7, both the horizontal domain and the vertical domain may be used, but the specific limitation is not provided herein, and optionally, the extending direction of the second electrode 8 preferably extends along the second direction Y, where the area overlapping the black matrix 4 in the direction perpendicular to the light emitting surface of the display panel is larger, the area overlapping the opening 5 is smaller, or the area overlapping the opening 5 is not overlapping, so as to reduce the loss of transmittance as much as possible.
Optionally, the Black Matrix is used to separate the three primary colors of red, green and blue (color confusion prevention) and light leakage prevention in the color film layer (not shown) by means of a material with high light shielding performance, so that the contrast of each color block is advantageously improved, and the color film layer is optionally arranged in the same layer as the Black Matrix 4 and is positioned in the opening 5 between the Black matrices 4. In addition, the black matrix can also mask signal wirings or thin film transistors (not shown in the drawings), and can mask the scan lines G extending in the first direction X and the data lines D extending in the second direction Y as in fig. 3 to 6. The pixel electrode 6 and the common electrode 21 may be made of Indium Tin Oxide (ITO) material to form a transparent conductive layer, but may be made of other transparent materials, and are not particularly limited herein.
Also shown in fig. 7 is a common electrode 21, and an electric field formed by a voltage difference between the pixel electrode 6 and the common electrode 21 drives the liquid crystal molecules 3 to deflect.
It should be noted that, in the present invention, the second electrode 8 may be disposed on the same layer as the first electrode 7, and when the pixel electrode 6 is used to transmit an electrical signal, the electrical signals of the second electrode 8 and the first electrode 7 are the same electrical signal, but a space 9 is formed between the second electrode 8 and the first electrode 7, which overlap with the orthographic projection of the black matrix 4 on the plane of the light emitting surface 40 of the display panel, and the space is not formed by overlapping the first electrode 7 with the black matrix 4 due to a process error when the first electrode 7 is formed, or simply forming the first electrode 7 with a larger area to overlap with the black matrix 4. The purpose of the present invention is to provide the second electrode 8 alone so that the position corresponding to the black matrix 4 also has an electric field capable of deflecting the liquid crystal molecules 3. Optionally, during manufacturing, the second electrode 8 and the first electrode 7 can be manufactured by the same material and the same process, so that the manufacturing process can be simplified, and the production cost can be reduced.
Compared with the prior art, the display panel 100 of the present embodiment has at least the following advantages:
in the invention, the front projection of the first electrode 7 on the light-emitting surface 40 of the display panel is only overlapped with the opening 5, the front projection of the second electrode 8 on the light-emitting surface 40 of the display panel is partially overlapped with the front projection of the black matrix 4 on the light-emitting surface 40 of the display panel, and the liquid crystal molecules 3b positioned at the edge of the opening 5 and the liquid crystal molecules 3b at the position corresponding to the black matrix 4 also have electric fields to rotate, so that the rotation of the liquid crystal molecules 3b does not follow the rotation of the liquid crystal molecules 3a, but is driven by the electric field between the second electrode 8 and the common electrode 21, and the integral electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the position corresponding to the black matrix, thereby realizing the rapid response of the liquid crystal molecules 3.
On the other hand, the orthographic projection of the second electrode 8 on the light-emitting surface 40 of the display panel is overlapped with the orthographic projection of the black matrix 4 on the light-emitting surface 40 of the display panel, the overlapped area with the opening 5 is smaller, or the second electrode is not overlapped with the opening 5, so that the loss of the whole transmittance of the display panel can be reduced.
In some alternative embodiments, referring to fig. 8, fig. 8 is a schematic plan view of still another display panel provided by the present invention, and fig. 9 is a cross-sectional view taken along the direction C-C' in fig. 8, the second electrode 8 includes a stem 10 and a plurality of protrusions 11, the protrusions 11 are connected to the stem 10, and the protrusions 11 have an angle α, α > 0 ° with respect to the stem 10.
Specifically, fig. 8 illustrates only the first electrode 7 as a vertical domain, but it is needless to say that a horizontal domain may be used, and the domain direction of the first electrode 7 is not specifically limited. The second electrode 8 is located within the black matrix 4 in a direction perpendicular to the plane of the light emitting surface of the display panel, but the second electrode 8 may also partially overlap the black matrix 4, which is not shown here. Optionally, the protruding portion 11 and the trunk portion 10 are made of the same material, so that the manufacturing process steps are simplified, and the production cost is reduced.
The number and shape of the protruding portions 11 are not particularly limited in this embodiment, and the number of protruding portions 11 and the shape of the protruding portions 11 in fig. 8 are only schematically illustrated. Of course, the position of the angle α between the trunk 10 and the boss 11 may be referred to as the angle α in fig. 13.
In this embodiment, the included angle α between the trunk portion 10 and the protruding portion 11 is greater than 0 °, that is, the protruding portion 11 is not parallel to the trunk portion 10, and the plurality of protruding portions 11 divide the region corresponding to the black matrix 4 into a plurality of small regions along the extending direction of the trunk portion 10, referring to fig. 9, the protruding portion 11 and the common electrode 21 form an electric field for driving the liquid crystal molecules 3c to deflect, and each of the small regions has an electric field capable of driving the liquid crystal molecules 3c to rotate, so that the liquid crystal molecules 3c are more easily driven, thereby contributing to improving the response speed.
It should be noted that, compared with the second electrode 8 designed as a monolithic electrode, if the second electrode 8 is a monolithic electrode, because the driving area is larger, a portion of the liquid crystal molecules 3 are driven to rotate, and the response speed is relatively slow, but in this embodiment, the plurality of protrusions 11 divide the driving area into a plurality of small areas, respectively, so that the liquid crystal molecules 3c can be driven more easily, and the overall electric field intensity in the pixel can be optimized more by enhancing the rotation of the liquid crystal molecules at the corresponding positions of the black matrix.
In some alternative embodiments, referring to fig. 10, fig. 10 is a schematic plan view of another display panel provided by the present invention, and in fig. 10, the extending direction of the trunk portion 10 is the same as the extending direction of the first electrode 7.
In fig. 10, only the first electrode 7 is schematically illustrated as a vertical domain, and the first electrode 7 extends along the second direction Y, and it is understood that the second direction Y is the same as the extending direction of the data line D in the display panel 100, and when the pixel electrode 6 is manufactured, the trunk portion 10 of the second electrode 8 is disposed in the same direction as the first electrode 7, and the same mask can be used for manufacturing, so that the production cost can be reduced. Of course, the first electrode 7 may be a transverse domain, the trunk portion 10 of the second electrode 8 extends along the second direction Y, and the plurality of protruding portions 11 extend along the second direction Y, so long as the region corresponding to the black matrix 4 can be divided into a plurality of small regions, if the protruding portions 11 divide the liquid crystal molecules into a plurality of small regions, each small region has an electric field capable of driving the liquid crystal molecules to rotate, the liquid crystal molecules are easier to be driven, and the liquid crystal molecules at the corresponding positions of the black matrix are enhanced to rotate, thereby being more beneficial to optimizing the overall electric field intensity in the pixel, and further being beneficial to improving the response speed.
In some alternative embodiments, referring to fig. 11, fig. 11 is a schematic plan view of a display panel according to still another embodiment of the present invention, where the display panel 100 in fig. 11 further includes a scan line G extending along a first direction X, and a data line D extending along a second direction Y, and the first direction X and the second direction Y intersect; the extending direction of the trunk portion 10 is the second direction Y, and the extending direction of the protruding portion 11 is the first direction X.
The first electrode 7 in fig. 11 has a vertical domain structure, the extending direction of the second electrode 8 extends along the second direction Y, which is the same as the extending direction of the data line D, and the protrusion 11 extends along the first direction X, which is the same as the extending direction of the scan line G, in other words, the overall structure of the second electrode 8 is a horizontal domain. The response speed of the transverse domain structure to the liquid crystal molecules 3 is higher than that of the vertical domain structure, the inventor carries out simulation experiments on the structure in fig. 11 and the related technology in fig. 1, and the simulation results show that the response time of the liquid crystal in the related embodiment is 23.21ms, and the response time of the liquid crystal in the embodiment is 22.78 ms.
Of course, the trunk portion 10 extends along the second direction Y, the plurality of protruding portions 11 extend along the first direction X, the plurality of protruding portions 11 divide the region corresponding to the black matrix 4 into a plurality of small regions, the protruding portions 11 and the common electrode 21 form an electric field for driving the black matrix 4 and the liquid crystal molecules 3 at the edge of the opening 5 to deflect, and each small region is provided with an electric field capable of driving the liquid crystal molecules to rotate.
In some alternative embodiments, referring to fig. 12 and 13, fig. 12 is a schematic plan view of a further display panel of the present invention, fig. 13 is a partially enlarged view of an area M in fig. 12, and fig. 13 shows only the structure of the second electrode 8, in a direction from the trunk portion 10 toward the boss portion 11, 60 deg. alpha. Ltoreq.100 deg..
The scanning line G and the data line D are not shown in fig. 12 and 13, the liquid crystal molecules 3 are indicated by dotted lines in fig. 12 and 13 as initial positions, the solid lines as rotated positions, and the negative liquid crystal is rotated in a direction perpendicular to the electric field under the action of the electric field assuming that the liquid crystal molecules 3 are negative liquid crystal. Assuming that the alignment direction P of the liquid crystal is the first direction X, the first electrode 7 is arranged as a vertical domain along the second direction Y, and thus, as shown in fig. 12, the liquid crystal molecules 3 in the opening 5 are rotated in one direction as a whole. The second electrode 8 below the black matrix 4 is a horizontal domain, and includes the trunk portion 10 and the protruding portion 11, so that there are multiple directions of electric fields, and the rotation angles of the liquid crystal molecules 3 are different, referring to fig. 13, it can be seen from fig. 13 that the protruding portion 11 and the common electrode 21 (not shown in fig. 12) drive the liquid crystal molecules 3 to rotate by the electric field, the trunk portion 10 and the common electrode 21 also form the electric field to drive the liquid crystal molecules 3 to rotate, and the rotation angle of the electric field Q of the protruding portion 11 drives the liquid crystal molecules 3 to be smaller than the rotation angle of the liquid crystal molecules 3 by the electric field R of the trunk portion 10, so that the rotation speed of the liquid crystal molecules 3 is: the electric field Q of the convex portion 11 drives the liquid crystal molecules 3 to rotate quickly, and the electric field R of the trunk portion 10 drives the liquid crystal molecules 3 to rotate slowly, mainly because the angle at which the liquid crystal molecules 3 rotate varies.
In fig. 13, an angle between the boss 11 and the trunk 10 is 90 ° as an example. Referring to fig. 13, in fig. 13, the alignment direction P of the liquid crystal molecules 3 is the first direction X, in the counterclockwise direction, the angle between the trunk portion 10 and the protrusion portion 11 is not too large, and is not too small, so that the smaller the angle θ between the protrusion portion 11 and the alignment direction P, the smaller the angle of rotation of the liquid crystal molecules 3 is, the faster the response is, the angle between the protrusion portion 11 and the trunk portion 10 is close to 90 ° at this time, but the transmittance of light is reduced, whereas the larger the angle between the protrusion portion 11 and the alignment direction P is, the liquid crystal molecules 3 are, the slower the response is, and the angle between the protrusion portion 11 and the trunk portion 10 is close to 180 ° at this time, but the transmittance is increased, so that the angle α between the protrusion portion 11 and the trunk portion 10 is properly adjusted, and the angle between the protrusion portion 11 and the trunk portion 10 is optionally changed between 60 ° and 100 °.
Of course, the angle α between the protrusion 11 and the trunk 10 should not be too small, and the response of the excessively small liquid crystal molecules 3 may be slow. Meanwhile, if the included angle alpha is too small, the process manufacturing difficulty is increased.
If the angle α between the boss 11 and the trunk 10 is 45 °, the length of the boss 11 is increased, that is, the area of the boss 11 is relatively large, but the electric field strength of the boss 11 is not increased, but the response time is rather reduced, on the one hand, the ratio of the electric field strength of the boss 11 to W/S and the voltage are related, W is the width of the boss 11, and S is the distance between the two bosses 11. Therefore, under the condition that the W/S and the voltage are unchanged, only the angle of the protruding part 11 is changed, the electric field of the protruding part 11 is not enhanced, and compared with the angle alpha of 90 degrees, the response is slower because the angle alpha is 45 degrees, and the liquid crystal needs to rotate at a larger angle. But the width of the protruding part 11 can be increased to reduce the interval between the two protruding parts 11, so that the W/S is improved, the electric field intensity of the protruding part 11 is improved, and the whole electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the corresponding position of the black matrix, so that the rapid response of the liquid crystal molecules 3 is realized.
In some alternative embodiments, referring to fig. 14, fig. 14 is a cross-sectional view taken along the direction C-C' in fig. 8, and further includes a first alignment film 12 coated on a side of the first substrate 1 adjacent to the second substrate 2 and a second alignment film 13 coated on a side of the second substrate 2 adjacent to the first substrate 1, wherein the first alignment film 12 and the second alignment film 13 have an alignment angle of a second included angle β,60 ° + β+.ltoreq.α+.ltoreq.100° + β.
Specifically, the alignment film functions to enable the liquid crystal molecules 3 to be uniformly aligned and oriented at the microscopic-sized level. The first alignment film 12 and the second alignment film 13 are not pattern-filled in fig. 14. The first alignment film 12 is located at a side of the first substrate 1 adjacent to the second substrate 2, the second alignment film 13 is located at a side of the second substrate 2 adjacent to the first substrate 1, and the first alignment film 12 and the second alignment film 13 are generally formed by coating.
As described above, the initial position of the deflection of the liquid crystal molecules 3 is the same as the alignment direction of the first alignment film 12 and the second alignment film 13, that is, when the alignment angle of the first alignment film 12 and the second alignment film 13 is β, the pretilt angle of the liquid crystal molecules 3 and the angle of the first direction X, that is, β, are the same, and when the liquid crystal is driven to rotate to a predetermined overlap, the angle of the protrusion 11 and the main portion 10 needs to include the alignment angle, that is, 60+β+α+100+β, and at this time, the response time can be improved and the transmittance can be improved.
In some alternative embodiments, with continued reference to fig. 5, 6, 8, 10, 11, and 12, the orthographic projection of the second electrode 8 on the light-emitting surface of the display panel is located within the orthographic projection of the black matrix on the light-emitting surface of the display panel.
The second electrode 8 is independently manufactured, a space 9 is arranged between the second electrode 8 and the first electrode 7, which are overlapped with the orthographic projection of the black matrix 4 on the plane of the light-emitting surface of the display panel, the orthographic projection of the second electrode 8 on the light-emitting surface of the display panel is positioned in the orthographic projection of the black matrix 4 on the light-emitting surface of the display panel, on one hand, the position corresponding to the black matrix 4 can also have an electric field capable of deflecting the liquid crystal molecules 3, on the other hand, the orthographic projection of the second electrode 8 on the light-emitting surface of the display panel is not overlapped with the opening 5, so that the loss of the transmittance can be reduced, and the liquid crystal quick response can be realized on the premise of not reducing the transmittance.
With continued reference to fig. 7, 8, 10, 11 and 12, the bosses 11 are distributed on the first side 14 and/or the second side 15 of the stem 10, the first side 14 being located on the side of the second side 15 adjacent to the opening 5.
The trunk 10 comprises a first side 14 and a second side 15 arranged opposite to each other in the first direction X, the first side 14 being located on a side of the second side 15 close to the opening 5, the protrusions 11 being distributed on the first side 14 of the trunk 10, on the second side 15 of the trunk 10, on the first side 14 and the second side 15 of the trunk 10, the protrusions 11 being distributed on the first side 14 and the second side 15 of the trunk 10 in fig. 8 and 10, the protrusions 11 being distributed on the first side 14 of the trunk 10 in fig. 11 and 12, and the protrusions 11 being distributed on the second side 15 of the trunk 10 in fig. 7. Whether the protrusions 11 are distributed on the first side 14 or the second side 15 of the trunk portion 10, the liquid crystal molecules at the position of the black matrix 4 can be divided into a plurality of small regions, thereby achieving a rapid response. Of course, in the case that the protrusions 11 are distributed on the first side 14 and the second side 15 of the trunk portion 10, the liquid crystal molecules at the position of the black matrix 4 can be divided into more small areas, and the liquid crystal molecules at the corresponding position of the black matrix are enhanced to rotate, so that the whole electric field intensity in the pixel can be optimized, and the response is quicker.
In some alternative embodiments, with continued reference to fig. 8 and 10, the direction of extension of the boss 11 on the first side 14 is collinear with the direction of extension of the boss 11 on the second side 15.
In fig. 8 and 10, the protrusions 11 are distributed on the first side 14 and the second side 15 of the trunk 10, and at this time, the extending directions of the protrusions 11 on the first side 14 and the protrusions 11 on the second side 15 are on the same straight line, so that on one hand, the liquid crystal molecules at the position of the black matrix 4 can be divided into a plurality of small areas, and on the other hand, the whole electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the position corresponding to the black matrix, thereby realizing quick response, and on the other hand, the manufacturing is convenient.
In some alternative embodiments, referring to fig. 15, fig. 15 is a schematic plan view of a display panel according to still another embodiment of the present invention, and the protrusions 11 on the first side 14 and the protrusions 11 on the second side 15 in fig. 15 are staggered.
The protruding portions 11 are distributed on the first side 14 and the second side 15 of the trunk portion 10, at this time, the protruding portions 11 located on the first side 14 and the protruding portions 11 located on the second side 15 are staggered, on one hand, liquid crystal molecules at the position of the black matrix 4 can be divided into a plurality of small areas, and the liquid crystal molecules at the position corresponding to the black matrix are enhanced to rotate, so that the whole electric field intensity in the pixel can be optimized, and the quick response is realized, and on the other hand, the manufacturing is convenient.
In some alternative embodiments, with continued reference to fig. 7, 8, 10, 11, 12, 14, and with reference to fig. 16 and 17, fig. 16 is a schematic plan view of another display panel provided by the present invention, and fig. 17 is a schematic plan view of another display panel provided by the present invention, where the shape of the protruding portion 11 includes a rectangle, triangle, or diamond in a direction perpendicular to the light emitting surface of the display panel.
In fig. 7, fig. 8, fig. 10, fig. 11, fig. 12, fig. 14, the front projection of the protrusion 11 on the light exit surface of the display panel is rectangular, in fig. 16, the front projection of the protrusion 11 on the light exit surface of the display panel is triangular, in fig. 17, the front projection of the protrusion 11 on the light exit surface of the display panel is diamond-shaped, and in the direction perpendicular to the light exit surface of the display panel, the shape of the protrusion 11 can divide the liquid crystal molecules at the position of the black matrix 4 into a plurality of small areas, so that quick response is realized, and on the other hand, the liquid crystal display device can be manufactured conveniently.
In some alternative embodiments, with continued reference to fig. 12, in the direction of extension of the trunk 10, the spacing between two adjacent bosses 11 is S, S being 2 μm or more and S being 3 μm or less, the width W of the boss 11 being 1 μm or more and 2 μm or less; the length L of the boss 11 in the extending direction of the boss 11 is 1 μm or more and 3.4 μm or less.
Referring to fig. 12, fig. 12 illustrates an example in which protrusions are arranged on only one side of the trunk portion 10. It should be noted that, in the extending direction of the trunk portion 10, the space S between two adjacent protruding portions 11 cannot be too large or too small, if the space S is too small, it is unfavorable to divide the liquid crystal molecules 3 into a plurality of small areas, the response time of the liquid crystal molecules 3 will be reduced, if the space S is too small and is unfavorable to manufacture, in this embodiment, S is 2 μm or more and S is 3 μm or less, which not only can satisfy the manufacturing process, but also is favorable to divide the liquid crystal molecules 3 into a plurality of small areas, and thus the liquid crystal quick response is realized. The width W of the protruding portion 11 cannot be too large or too small, the manufacturing is not facilitated, the number of the protruding portions 11 is reduced along with the too large width W, the number of the areas divided by the liquid crystal molecules 3 is reduced, and the rapid response is not facilitated, in the embodiment, the width W of the protruding portion 11 is larger than or equal to 1 μm and smaller than or equal to 2 μm, the manufacturing process is satisfied, the liquid crystal molecules 3 are divided into a plurality of small areas as much as possible, and the whole electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the corresponding positions of the black matrix, so that the rapid response of the liquid crystal is realized. The length L of the protruding portion 11 cannot be excessively large, mainly because the width k of the trunk portion 10 and the length of the protruding portion 11 are not greater than the width of the black matrix 4, and the length L of the protruding portion 11 in the extending direction of the protruding portion 11 is greater than or equal to 1 μm and less than or equal to 3.4 μm, so that orthographic projection of the protruding portion 11 and the trunk portion on the plane of the light-emitting surface of the display panel can be ensured to be located in the black matrix 4, and light transmittance is not affected.
In some alternative embodiments, with continued reference to fig. 4, the pixel electrode 6 further comprises a connection 16, the first electrode 7 and the second electrode 8 being connected by the connection 16.
It should be understood that the connection portion 16 may be disposed in the same layer as the first electrode 7 and the second electrode 8, and of course, the connection portion 16 may also be disposed in a different layer from the first electrode 7 and the second electrode 8, which is not particularly limited herein, so long as the first electrode 7 and the second electrode 8 can be electrically connected. Preferably, the first electrode 7, the second electrode 8 and the connecting part 16 are made of the same material and are of an integrated structure, so that the manufacturing process can be simplified, the production cost can be reduced, and the whole thickness of the display panel 100 can be reduced.
In some alternative embodiments, with continued reference to fig. 4, and with reference to fig. 17 and 19, fig. 18 is a schematic plan view of yet another display panel provided by the present invention, and fig. 19 is a schematic plan view of yet another display panel provided by the present invention.
The first electrode 7 comprises a first end 17 and a second end 18, the second electrode 8 comprises a third end 19 and a fourth end 20, the first end 17 corresponds to the third end 19, and the second end 18 corresponds to the fourth end 20; the connection 16 is connected to the first end 17 and the third end 19, respectively, and/or the connection 16 is connected to the second end 18 and the fourth end 20.
The positions of the first end 17 and the second end 18 and the positions of the third end 19 and the fourth end 20 are not particularly limited in the present invention, as long as the first end 17 and the third end 19 correspond to each other and the second end 18 and the fourth end 20 correspond to each other. Only the second end 18 is shown in fig. 4, 18 and 19 as being the end adjacent to the via hole for electrical connection with the drain of the thin film transistor (not shown).
In fig. 4, the connecting portion 16 is connected to the second end 18 and the fourth end 20, respectively, in fig. 18, the connecting portion 16 is connected to the first end 17 and the third end 19, respectively, in fig. 19, the connecting portion 16 is connected to the first end 17 and the third end 19, respectively, and simultaneously the connecting portion 16 is connected to the second end 18 and the fourth end 20.
In fig. 4, the connection portion 16 is connected to the second end 18 and the fourth end 20, respectively, and in fig. 18, the connection portion 16 is connected to the first end 17 and the third end 19, respectively, so that signal transmission is possible, and the voltages of the first electrode 7 and the second electrode 8 are, of course, kept uniform.
In fig. 19, the connection portion 16 is connected to the first end 17 and the third end 19, and the connection portion 16 is connected to the second end 18 and the fourth end 20, so that the voltages of the first electrode 7 and the second electrode 8 can be kept consistent, and the advantage of this is that if a wire break occurs at one end (the first end 17 or the third end 19) far from the via hole in the process, the electrical signal can still be provided to the second electrode 8 at one end near the via hole, so that the yield of the product can be improved; similarly, if the wire breakage occurs at the end (the second end 18 or the fourth end 20) close to the via hole, the end far from the via hole can still provide the electrical signal for the second electrode 8, so that the yield of the product can be improved.
In some alternative embodiments, with continued reference to fig. 7, the second substrate 2 further includes a common electrode 21 located on a side of the pixel electrode 6 remote from the first substrate 1, the common electrode 21 including a first sub-electrode and a second sub-electrode 23, the first sub-electrode 22 overlapping the first electrode 7 and the second sub-electrode 23 overlapping the second electrode 8 in a direction perpendicular to the light emitting surface of the display panel.
Specifically, the common electrode 21 may be located on a side of the pixel electrode 6 away from the first substrate 1, where an insulating layer 24 is disposed between the common electrode 21 and the pixel electrode 6, and the common electrode 21 has a first sub-electrode 22 and a second sub-electrode 23, although fig. 7 illustrates only the common electrode 21 as an entire structure schematically, it is also possible to provide insulation between the first sub-electrode 22 and the second sub-electrode 23, that is, the first sub-electrode 22 and the second sub-electrode 23 respectively provide voltage signals, and the voltage difference between the first sub-electrode 22 and the first electrode 7 forms an electric field for driving the liquid crystal molecules 3 in the opening 5 to deflect, and the voltage difference between the second sub-electrode 23 and the second electrode 8 forms an electric field for driving the liquid crystal molecules 3 in the position of the black matrix 4 to deflect.
In some alternative embodiments, with continued reference to fig. 7, the first sub-electrode 22 and the second sub-electrode 23 are of unitary construction.
The first sub-electrode 22 and the second sub-electrode 23 are of an integrated structure, so that the common electrode 21 can be manufactured on the whole surface without a seam, the manufacturing process can be simplified, and the production cost can be reduced.
In some alternative embodiments, with continued reference to fig. 3, 4, 5, 6, 8, 10, 11, 12, 14, 16, 17, 18, and with reference to fig. 20 and 21, fig. 20 is a schematic plan view of yet another display panel provided by the present invention, and fig. 21 is a schematic plan view of yet another display panel provided by the present invention, the first electrode 7 includes a single domain, a double domain, or a pseudo double domain.
The first electrodes 7 in fig. 4, 5, 6, 8, 10, 11, 12, 14, 16, 17, and 18 are all single domains, wherein the first electrodes 7 in fig. 4, 5, 8, 10, 11, 12, 14, 16, 17, and 18 are all vertical domains, the first electrodes 7 in fig. 6 are horizontal domains, the first electrodes 7 in fig. 20 are double domains, and the first electrodes 7 in fig. 21 are pseudo double domains.
The first electrode 7 is provided with slits, namely the first electrode 7 has different domain directions, and the slits can induce liquid crystal molecules in different domains to fall into different directions, so that the effect of improving color cast is achieved. The first electrode 7 is of a single-domain structure, namely that the slits extend along one direction, the double domains are axisymmetric along the first direction X, the pseudo double domains are axisymmetric along the first direction X, and the first electrode 7 in the two openings 5 along the column direction is of an axisymmetric structure, no matter the first electrode 7 is of a single-domain structure, a double-domain structure or a pseudo double-domain structure, the second electrode 8 is arranged at the position corresponding to the black matrix 4, the second electrode 8 can control liquid crystal at the edge position of the opening 5 of the black matrix 4 to rapidly respond, and the whole electric field intensity in a pixel is optimized by enhancing the rotation of liquid crystal molecules at the position corresponding to the black matrix 4, so that the response speed of the display panel 100 is improved.
In some alternative embodiments, please refer to fig. 22, fig. 22 is a schematic structural diagram of a display device according to an embodiment of the present invention, and a display device 200 according to the present embodiment includes a display panel 100 according to the above embodiment of the present invention. The embodiment of fig. 22 is only an example of a mobile phone, and the display device 200 is described, but it is understood that the display device 200 provided in the embodiment of the present invention may be other display devices 200 having a display function, such as a computer, a television, and a vehicle-mounted display device, which is not particularly limited in the present invention. The display device 200 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and the specific description of the display panel 100 in the above embodiments may be referred to in the embodiments, which is not repeated here.
As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:
the display panel is a liquid crystal display panel and comprises a first substrate, a second substrate and liquid crystal molecules, wherein the first substrate and the second substrate are oppositely arranged; the first substrate comprises black matrixes, and openings are formed among the black matrixes; the second substrate comprises a pixel electrode, the pixel electrode comprises a first electrode and a second electrode which are electrically connected, the first electrode is overlapped with the opening in the direction perpendicular to the light emitting surface of the display panel, the second electrode is at least partially overlapped with the black matrix, and a space is reserved between the first electrode and the second electrode. In the prior art, as the distance between the liquid crystal at the edge of the black matrix opening and the first electrode is far, the quick response cannot be realized, and the second electrode is independently arranged at the position corresponding to the black matrix of the first substrate, the second electrode can control the quick response of the liquid crystal at the edge of the black matrix opening, and the integral electric field intensity in the pixel is optimized by enhancing the rotation of the liquid crystal molecules at the position corresponding to the black matrix, so that the response speed of the display panel is improved.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated 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 (16)
1. A display panel, comprising a first substrate and a second substrate which are oppositely arranged, and liquid crystal molecules which are clamped between the first substrate and the second substrate;
the first substrate comprises a black matrix, and openings are arranged among the black matrices;
the second substrate comprises a pixel electrode, the pixel electrode comprises a first electrode and a second electrode which are electrically connected, the first electrode is overlapped with the opening in the direction perpendicular to the light emitting surface of the display panel, the second electrode is at least partially overlapped with the black matrix, and a space is reserved between the first electrode and the second electrode;
the second electrode comprises a main part and a plurality of protruding parts, the protruding parts are connected with the main part, the protruding parts and the main part are provided with included angles alpha, and the directions of the main parts and the protruding parts are more than or equal to 60 degrees and less than or equal to 100 degrees.
2. The display panel according to claim 1, wherein an extending direction of the trunk portion is the same as an extending direction of the first electrode.
3. The display panel of claim 1, further comprising a scan line extending in a first direction, a data line extending in a second direction, the first direction intersecting the second direction;
the extending direction of the trunk part is the second direction, and the extending direction of the protruding part is the first direction.
4. The display panel according to claim 1, further comprising a first alignment film coated on a side of the first substrate close to the second substrate and a second alignment film coated on a side of the second substrate close to the first substrate, wherein an alignment angle of the first alignment film and the second alignment film is a second included angle β,60 ° +β+.ltoreq.α+.ltoreq.100° +β.
5. The display panel of claim 1, wherein the orthographic projection of the second electrode on the light-emitting surface of the display panel is located within the orthographic projection of the black matrix on the light-emitting surface of the display panel.
6. The display panel according to claim 1, wherein the protrusions are distributed on a first side and/or a second side of the trunk, the first side being located on a side of the second side close to the opening.
7. The display panel according to claim 6, wherein an extending direction of the convex portion located at the first side is on the same line as an extending direction of the convex portion located at the second side.
8. The display panel of claim 7, wherein the protrusions on the first side are staggered with respect to the protrusions on the second side.
9. The display panel according to claim 1, wherein the shape of the convex portion includes a rectangle, a triangle, or a diamond in a direction perpendicular to the light-emitting surface of the display panel.
10. The display panel according to claim 1, wherein a spacing between two adjacent protrusions in an extending direction of the trunk portion is S, S is 2 μm or more and S is 3 μm or less, and a width of the protrusion is 1 μm or more and 2 μm or less; the length of the protruding portion in the extending direction of the protruding portion is 1 μm or more and 3.4 μm or less.
11. The display panel according to claim 1, wherein the pixel electrode further comprises a connection portion, and the first electrode and the second electrode are connected through the connection portion.
12. The display panel of claim 11, wherein the first electrode comprises a first end and a second end, the second electrode comprises a third end and a fourth end, the first end and the third end correspond, and the second end corresponds to the fourth end;
the connecting portion is connected with the first end and the third end respectively, and/or the connecting portion is connected with the second end and the second end.
13. The display panel according to claim 1, wherein the second substrate further comprises a common electrode on a side of the pixel electrode away from the first substrate, the common electrode comprising a first sub-electrode and a second sub-electrode, the first sub-electrode and the first electrode overlapping each other and the second sub-electrode and the second electrode overlapping each other in a direction perpendicular to a light-emitting surface of the display panel.
14. The display panel of claim 13, wherein the first sub-electrode and the second sub-electrode are of unitary construction.
15. The display panel of claim 1, wherein the first electrode comprises a single domain, a double domain, or a pseudo-double domain.
16. A display device comprising the display panel of any one of claims 1 to 15.
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| JPH0915629A (en) * | 1995-07-03 | 1997-01-17 | Fujitsu Ltd | Liquid crystal display panel |
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| CN109752892A (en) * | 2019-03-20 | 2019-05-14 | 厦门天马微电子有限公司 | A kind of liquid crystal display panel and display device |
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| JPH0915629A (en) * | 1995-07-03 | 1997-01-17 | Fujitsu Ltd | Liquid crystal display panel |
| KR20150029436A (en) * | 2013-09-10 | 2015-03-18 | 삼성디스플레이 주식회사 | Display apparatus |
| KR20170064077A (en) * | 2015-11-30 | 2017-06-09 | 엘지디스플레이 주식회사 | In plane switching mode liquid crystal display device |
| CN206162021U (en) * | 2016-11-18 | 2017-05-10 | 厦门天马微电子有限公司 | Display panel and display device |
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