CN105842932A - Liquid crystal display (LCD) panel - Google Patents
Liquid crystal display (LCD) panel Download PDFInfo
- Publication number
- CN105842932A CN105842932A CN201610409989.0A CN201610409989A CN105842932A CN 105842932 A CN105842932 A CN 105842932A CN 201610409989 A CN201610409989 A CN 201610409989A CN 105842932 A CN105842932 A CN 105842932A
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- Prior art keywords
- spacer
- black matrix
- row
- display panels
- array
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- 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
Abstract
The application discloses a liquid crystal display (LCD) panel, comprising an array substrate, a color film substrate arranged opposite to the array substrate, and a spacing pillar array formed between the array substrate and the color film substrate, wherein the spacing pillar array comprises a plurality of spacing pillars; each spacing pillar comprises a bottom surface and a top surface which are parallel to each other; each top surface comprises a first plane and a second plane, and the distances h1 between the first planes and the bottom surfaces are greater than the distances h2 between the second planes and the bottom surfaces. According to the scheme of the embodiments of the application, functions of a main spacing pillar and auxiliary spacing pillars can be realized at the same time by arranging the spacing pillars with height difference. Furthermore, the main spacing pillar and the auxiliary spacing pillars are integrated into a whole, so that the number of the spacing pillars needed to be arranged is reduced, and a phenomenon of dark state light leakage caused by adverse alignment is further reduced.
Description
Technical field
The disclosure relates generally to Display Technique field, particularly relates to a kind of display panels.
Background technology
Display panels generally includes array base palte, color membrane substrates and is formed at therebetween
Liquid crystal layer.Liquid crystal layer is avoided to be subject in order to form support between array base palte and color membrane substrates
To extruding, multiple spacer generally can be set between array base palte and color membrane substrates.
As it is shown in figure 1, be in existing display panels, the schematic structure of color membrane substrates
Figure.Specifically, color membrane substrates is formed with colored filter and for splitting colorized optical filtering
Sheet is to form the black matrix" 15 of the pixel cell of multiple array arrangements.Such as, colored filter
Redness (R) optical filter, green (G) optical filter and blue (B) optical filter can be included,
So, R, G, B optical filter can be split to form red pixel by black matrix" 15
Unit 11, green pixel cell 12 and blue pixel cells 13.In Fig. 1, identical filling sample
The pixel cell of formula represents the pixel cell of same color.Additionally, be also formed with on color membrane substrates
Multiple spacers 14.
A portion spacer that spacer array is comprised is master space post, and another part
It it is auxiliary spacer.Wherein, master space post can have higher height, and auxiliary spacer has
Less height.After the array base palte and color membrane substrates para-position laminating of display panels, main
Spacer can contact with array base palte, and has certain between auxiliary spacer and array base palte
Gap.
When display panels is extruded by external force, master space post can ensure that display panels
In electronic device will not be the most impaired, auxiliary spacer then can be further ensured that LCD
The box thickness of plate changes in a less scope, it is to avoid box thickness is abnormal.
Spacer 14 such as can be formed on each row of black matrix" 15, and spacer 14
Shape such as can round table-like for shown in Fig. 2.As in figure 2 it is shown, spacer 14 includes phase
The most parallel upper surface 141 and lower surface 142, upper surface 141 and lower surface 142 are circle
Shape.
Additionally, the dark-state light leak caused in order to avoid display panels orientation is bad, spacer
14 is the most non-conterminous with green pixel cell 12.
But, along with improving constantly of display floater resolution, black between adjacent pixel unit
The width of colour moment battle array 15 is more and more narrow.Such as, when resolution more than 400PPI (Pixel per Inch,
Per inch pixel count) time, the width of black matrix" is about 4～5 μm.And in order to ensure liquid crystal
Display floater is not damaged by when being extruded by external force and box thickness is the most homogeneous, master space post and auxiliary between
The quantity of spacer post is the most more.So, in high PPI display panels,
The position of the bad dark-state light leak caused of spacer post (including master space post and auxiliary spacer) place's orientation
The most more.
On the other hand, due in high PPI display panels, the narrower width of black matrix",
The bad dark-state light leak caused of orientation will be distributed in pixel cell more, cause display floater
Dark-state is the darkest.
Additionally, due to being shaped as of spacer 14 is round table-like, when display panels is by the external world
During pressure effect, spacer 14 is easily slipped on array base palte in the via of insulating barrier, thus
Cause the box thickness extruding colour cast or display panels abnormal.
Summary of the invention
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of display panels,
To solving technical problem present in prior art.
First aspect, the embodiment of the present application provides a kind of display panels, including: array
Color membrane substrates that substrate and array base palte are oppositely arranged and be formed at array base palte and color film base
Spacer array between plate；Wherein: spacer array includes multiple spacer；Each spacer
Including the bottom surface being parallel to each other and end face；End face includes the first plane and the second plane, and first
Distance h between plane and bottom surface1More than distance h between the second plane and bottom surface2。
According to the scheme of the embodiment of the present application, be there is by setting the spacer of difference in height, permissible
Realize master space post and the function of auxiliary spacer simultaneously.Additionally, due to by master space post and auxiliary between
Spacer post becomes one, and decreases the quantity of the spacer needing setting, thus alleviates orientation
The bad dark-state light leakage phenomena caused.
Additionally, in certain embodiments, it is shaped such that spacer by arranging spacer bottom surface
Along black matrix" line direction the first width more than along along black matrix" line direction adjacent any two
Distance between via, during so that display panels receives ambient pressure effect, interval
Post will not fall in via, it is to avoid the extruding colour cast of display panels and box thickness are abnormal.
Accompanying drawing explanation
The detailed description that non-limiting example is made made with reference to the following drawings by reading,
Other features, purpose and advantage will become more apparent upon:
Fig. 1 shows in existing display panels, the schematic diagram of color membrane substrates；
Fig. 2 shows in existing display panels, the schematic diagram of spacer；
Fig. 3 shows in the display panels of the application, showing of an embodiment of spacer
Meaning property structure chart；
Fig. 4 shows in the display panels of the application, the black square being positioned on color membrane substrates
Battle array, the schematic diagram of relative position relation between colored filter and spacer array；
Fig. 5 shows in the array base palte in the display panels of the application, pixel electrode,
Schematic between public electrode and the insulating barrier via between pixel electrode and public electrode
Relative position relation schematic diagram；
It is relative that Fig. 6 shows between two vias that spacer is adjacent with at black matrix" line direction
Position relationship schematic diagram；
Fig. 7 A～Fig. 7 F shows the schematic diagram of the bottom shape of the spacer of the application.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is appreciated that
, specific embodiment described herein is used only for explaining related invention, rather than to this
Bright restriction.It also should be noted that, for the ease of describe, accompanying drawing illustrate only with
The part that invention is relevant.
It should be noted that in the case of not conflicting, the embodiment in the application and embodiment
In feature can be mutually combined.Describe this below with reference to the accompanying drawings and in conjunction with the embodiments in detail
Application.
The display panels of the application, is oppositely arranged including array base palte and array base palte
Color membrane substrates and the spacer array being formed between array base palte and color membrane substrates.Wherein,
Spacer array includes multiple spacer.
Shown in Figure 3, in the display panels of the application, an enforcement of spacer
The schematic diagram of example.
As it is shown on figure 3, spacer includes bottom surface 310 and the end face 320 being parallel to each other.
End face 320 includes the first plane 321 and the second plane 322.And first plane 321 with
Distance h between bottom surface 3101More than distance h between the second plane 322 and bottom surface 3102。
Here, owing to first plane the 321, second plane 322 is all parallel with bottom surface 310,
Thus, distance h between the first plane 321 and bottom surface 3101For being perpendicular to the first plane 321
With in the vertical line of bottom surface 310, between intersection point and the intersection point of bottom surface 310 of the first plane 321
Distance.
Similarly, distance h between the second plane 322 and bottom surface 3102Flat for being perpendicular to second
In the vertical line of face 322 and bottom surface 310, the intersection point of the second plane 322 and the intersection point of bottom surface 310
Between distance.
So, it is divided into two planes not waited (i.e. due to the end face 320 of spacer
First plane 321 and the second plane 322), it is integrated with master space post and auxiliary interval in prior art
Post.Both display panels can have been avoided without damage when being extruded by external force, can ensure that again
The box of display panels is thick.In other words, a spacer of the present embodiment, can substitute
A master space post and an auxiliary spacer in prior art, so that spacer is at color film base
On plate, occupied area is less, so decrease that spacer position causes because orientation is bad dark
State light leakage phenomena, promotes the dark-state display effect of display panels.
Fig. 4 shows in the display panels of the present embodiment, and be formed on color membrane substrates is black
Relative position relation between colour moment battle array, colored filter and spacer.
As shown in Figure 4, black matrix" include multiple black matrix" row 410 and with each black square
The black matrix" row 420 that battle array row intersects.Each black matrix" row 410 and each black matrix" row 420
Separate colored filter to form the display pixel 430 of multiple array arrangements.
Here, it should be noted that the display panels of the present embodiment can comprise multiple
There is the colored filter of different colours.So, under liquid crystal molecule is at electric field action partially
When turning, the light through each display pixel 430 can present different colors.
Additionally, as shown in Figure 4, black matrix" to black matrix" is just covering each spacer 440
Projection.In other words, each spacer 440 is entirely located in black square to the orthographic projection of black matrix"
In battle array.So, spacer 440 is not located in the region of any one display pixel 430,
Thus also the transmitance in each display pixel 430 will not be produced negative impact.
Alternatively, in the display panels of the present embodiment, the bottom surface of spacer can be axle pair
Claim figure, and wherein axis of symmetry of bottom surface is parallel to the direction of black matrix" row.
First width of bottom surface is more than the second width of bottom surface, and wherein, the first width is bottom surface
Along being parallel to the width maximum in direction of black matrix" row, the second width be bottom surface along parallel
Width maximum in the direction of black matrix" row.So, even if display panels by
The narrower width of black matrix" row in black matrix" is caused, due to spacer bottom surface in high PPI
The first width extended along black matrix" row can arrange bigger, correspondingly, and spacer bottom surface
Can have bigger area so that spacer is more stable to the support of display panels,
Reliably.
In the display panels of the application, array base palte also includes being formed at the first conductor layer
Pixel electrode array, each pixel electrode in pixel electrode array lays respectively in each display pixel.
Array base palte also includes the public electrode being formed at the second conductor layer and is formed at the first conductor layer
And the insulating barrier that second between conductor layer.Multiple one a pair with pixel electrode is offered on insulating barrier
The via answered, so that each pixel electrode forms conduction electric field respectively with public electrode.
As it is shown in figure 5, be in the display panels of the application, the picture being positioned on array base palte
Element electrode 510, public electrode 520 and between pixel electrode 510, public electrode 520
The relative position relation schematic diagram of insulating barrier 530.
Array base palte include thin film transistor (TFT), the pixel electrode 510 being positioned at each display pixel,
Public electrode 520 and be formed at the insulating barrier between pixel electrode 510 and public electrode 520
530.Thin film transistor (TFT) includes the grid 540 being formed at the first metal layer and is formed at the second gold medal
Belong to the source of layer, drain electrode 550.Additionally, array base palte also include being formed at multi-strip scanning line and
The data wire intersected with multi-strip scanning line.Scan line such as can be with the grid of thin film transistor (TFT)
540 are arranged with layer, and data wire can be arranged with layer with the source-drain electrode 550 of thin film transistor (TFT).
The grid 540 of thin film transistor (TFT) is connected with scan line, and the drain electrode of thin film transistor (TFT) and number
Connect according to line.When the scanning signal of scan line makes thin film transistor (TFT) open, thin film transistor (TFT)
Source, drain electrode connection, thus by the data signal transmission that applies on data wire to pixel electrode
510.So, the liquid crystal molecule in the liquid crystal layer between array base palte and color membrane substrates
Correspondingly deflect under the electric field action formed between pixel electrode 510 and public electrode 520,
Thus show predetermined picture.
Additionally, as it is shown in figure 5, in order to make pixel electrode 510 and the source of thin film transistor (TFT), leakage
Source electrode in electrode 550 or drain electrode electrical connection, insulating barrier 530 can be offered a via 531,
Similarly, the insulating barrier 560 between public electrode 520 and the second metal level also can offer one
Via 561, so, pixel electrode 510 can be with the source electrode of thin film transistor (TFT) or drain electrode
Electrical connection.
As shown in Figure 6, it illustrates spacer 630 and along the adjacent mistake of black matrix" line direction
Relative position relation between hole 610 and via 620.
In Fig. 6, via 610 and via 620 are respectively provided with geometric center O and O ', and geometry
Center O and geometric center O ' between distance be d.
Additionally, it is spacer 630 that spacer 630 has the 3rd width c, the 3rd width c
End face is at the width maximum in the direction of black matrix" row.
As shown in Figure 6, the 3rd width c is more than distance d between via 610 and via 620.
So, when display panels is extruded by external force, spacer 630 is difficult to clamp-on arbitrarily
In one via, and then display panels is made to remain to keep relative stability when being extruded by external force
Box thick, and then ensure good display effect.
See shown in Fig. 7 A～Fig. 7 D, for the schematic diagram of bottom shape of the spacer of the application.
It should be noted that Fig. 7 A～Fig. 7 being only intended to illustrate property of D illustrate and can be used for realizing
The bottom shape of the spacer in the display panels of the application, rather than limit the application
Display panels in the bottom shape of spacer.
Such as, as shown in Figure 7 A, in the display panels of the present embodiment, spacer array
The spacer that bottom surface is round rectangle 710 can be included, and the long limit of round rectangle 710 is permissible
It is parallel to the direction of black matrix" row.
Or, as shown in Figure 7 B, in the display panels of the present embodiment, spacer array
The spacer that bottom surface is oval 720 can be included, and the longer axis parallel of ellipse 720 is in black
The direction of color row matrix.
Or, as seen in figure 7 c, in the display panels of the present embodiment, spacer array
The spacer that bottom surface is rhombus 730, wherein, a wherein diagonal angle of rhombus 730 can be included
Line is parallel to the direction of black matrix" row.
Or, in the display panels of the present embodiment, it is also possible to include having by least two
The spacer of the bottom surface that the spirte of congruence is spliced to form.As shown in Fig. 7 D～Fig. 7 F.
Wherein, Fig. 7 D schematically shows by two congruent circle 741,742 splicing shapes
The bottom surface 740 become.Fig. 7 E schematically shows the ellipse 751,752 congruent by two
The bottom surface 750 being spliced to form, here, the major axis of oval 751 and oval 752 is such as
The direction of black matrix" row can be parallel to.Fig. 7 F shows the isosceles trapezoid congruent by two
761, the bottom surface 760 that 762 are spliced to form.Wherein, the base of two isosceles trapezoids 761,762 is spelled
Connect and extend along the direction being parallel to black matrix" row.
In addition it should be noted that in the display panels of the application, the bottom surface of spacer and
The end face of spacer can be of similar shape, so that spacer is in manufacturing process,
Making can be etched only with the mask plate of a kind of pattern.
Alternatively, in the spacer in the display panels of the application, the first plane separation bottom surface
High h1High h with the second plane separation bottom surface2Can meet following relation:
0.4μm≤h1-h2≤0.6μm。
So, spacer the most both can play between the master of existing display panels
The effect of spacer post, can play again the effect of auxiliary spacer in existing display panels, enter
Sending out of the water ripple phenomenon that one step ensures that the box of display panels is thick and prevents pressed by external force from causing
Raw.
Additionally, the display panels of the application also includes both alignment layers and liquid crystal layer.Liquid crystal layer shape
Become between array base palte and color membrane substrates, and liquid crystal layer includes negative liquid crystal.Joining of both alignment layers
To the direction being oriented parallel to black matrix" row.
So, in process of alignment, the orientation not good general caused due to the occupy-place of spacer
Fully fall in black matrix" row, without entering in pixel region, thus avoid orientation
The bad dark-state light leakage phenomena caused.Further, spacer can be arranged on LCD
On black matrix" row adjacent with random color pixel region in plate, and the highest without avoiding having
The pixel region of brightness.
Furthermore, it is necessary to explanation, in the spacer in the display panels of the application, top
The first plane and the second plane in face can have multiple relative position relation.Such as, first
Plane and the second plane can arrange along the direction of black matrix" row, or, the first plane and the
Two planes can also be along the direction arrangement of black matrix" row.Or, the first plane and/or second flat
Face can include many sub-planes, and the connecting method of each sub-plane can also be arbitrary, only
Want the first plane, the second plane parallel with bottom surface respectively, and the distance of the first plane separation bottom surface is big
In the distance of the second plane separation bottom surface, then within being contemplated as falling within the protection domain of the application.
It will be appreciated by those skilled in the art that invention scope involved in the application, do not limit
In the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain simultaneously without departing from
In the case of described inventive concept, above-mentioned technical characteristic or its equivalent feature carry out combination in any
And other technical scheme formed.Such as features described above and (but not limited to) disclosed herein
The technical characteristic with similar functions is replaced mutually and the technical scheme that formed.
Claims (11)
1. a display panels, is oppositely arranged with described array base palte including array base palte
Color membrane substrates and the spacer battle array that is formed between described array base palte and described color membrane substrates
Row；
It is characterized in that:
Described spacer array includes multiple spacer；
Each described spacer includes bottom surface and the end face being parallel to each other；
Described end face includes the first plane and the second plane, and described first plane and described bottom surface
Between distance h1More than distance h between described second plane and described bottom surface2。
Display panels the most according to claim 1, it is characterised in that: described color film
Black matrix" and colored filter it is formed with on substrate；
Described black matrix" includes multiple black matrix" row and intersects with each described black matrix" row
Black matrix" row；
Described in each described black matrix" row and each described black matrix" column split, colored filter is with shape
Become the display pixel of multiple array arrangement；
Wherein, described black matrix" covers the orthographic projection to described black matrix" of each described spacer.
Display panels the most according to claim 2, it is characterised in that:
Described bottom surface is zhou duicheng tuxing, and the axis of symmetry of described bottom surface is parallel to described black matrix"
The direction of row；
First width of described bottom surface is more than the second width of described bottom surface, wherein, described first
Width is the width maximum along the direction being parallel to described black matrix" row of described bottom surface, institute
State the width along the direction being parallel to described black matrix" row that the second width is described bottom surface maximum
Value.
Display panels the most according to claim 3, it is characterised in that:
Described array base palte includes public electrode, multiple pixel electrode and is positioned at described common electrical
Insulating barrier between pole and the plurality of pixel electrode；
Multiple and the plurality of pixel electrode via one to one is offered on described insulating barrier,
So that each described pixel electrode forms electric field with described public electrode respectively；
Wherein, the 3rd width c of described spacer and described via are along being parallel to described black square
The direction of battle array row adjacent any two described in distance d between via meet:
C ＞ d；
Wherein, described 3rd width is that the end face of described spacer is in the direction of black matrix" row
Width maximum, described along the direction of black matrix" row adjacent any two described between via
Distance d be described along the direction of black matrix" row adjacent any two described in the geometric center of via
Between distance.
Display panels the most according to claim 1, it is characterised in that described first
Distance h between plane and described bottom surface1And between described second plane and described bottom surface away from
From h2Meet:
0.4μm≤h1-h2≤0.6μm。
6. according to the display panels described in claim 1-5 any one, it is characterised in that:
Described spacer array includes the spacer that bottom surface is round rectangle；
Wherein, the long limit of described round rectangle is parallel to the direction of described black matrix" row.
7. according to the display panels described according to claim 1-5 any one, its feature
It is:
Described spacer array includes that bottom surface is oval spacer；
Wherein, the longer axis parallel of described ellipse is in the direction of described black matrix" row.
8. according to the display panels described according to claim 1-5 any one, its feature
It is:
Described spacer array includes the spacer that bottom surface is rhombus；
Wherein, wherein diagonal of described rhombus is parallel to the direction of described black matrix" row.
9. according to the display panels described according to claim 1-5 any one, its feature
It is:
Described spacer array includes the spacer that bottom surface is the first figure；
Wherein, described first figure is spliced to form by the spirte of at least two congruence.
Display panels the most according to claim 9, it is characterised in that described son
Figure include following any one:
Circle, oval and isosceles trapezoid.
11. exist according to the display panels described in claim 2-5 any one, its feature
In:
Described display panels also includes both alignment layers and liquid crystal layer；
Wherein, described liquid crystal layer is formed between described array base palte and described color membrane substrates, and
Described liquid crystal layer includes negative liquid crystal；
The alignment direction of described both alignment layers is parallel to the direction of described black matrix" row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409989.0A CN105842932A (en) | 2016-06-12 | 2016-06-12 | Liquid crystal display (LCD) panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409989.0A CN105842932A (en) | 2016-06-12 | 2016-06-12 | Liquid crystal display (LCD) panel |
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| CN201610409989.0A Pending CN105842932A (en) | 2016-06-12 | 2016-06-12 | Liquid crystal display (LCD) panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019165659A1 (en) * | 2018-03-01 | 2019-09-06 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel |
| CN110427931A (en) * | 2019-07-31 | 2019-11-08 | 厦门天马微电子有限公司 | A kind of array substrate and display device |
| CN114236916A (en) * | 2021-11-15 | 2022-03-25 | 滁州惠科光电科技有限公司 | Display panel and display device |
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