CN108594514B - Display panel and display device with same - Google Patents
Display panel and display device with same Download PDFInfo
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- CN108594514B CN108594514B CN201810400727.7A CN201810400727A CN108594514B CN 108594514 B CN108594514 B CN 108594514B CN 201810400727 A CN201810400727 A CN 201810400727A CN 108594514 B CN108594514 B CN 108594514B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- 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
- G02F1/133553—Reflecting elements
-
- 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)
- Geometry (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel and a display device with the same, wherein the display panel comprises a color film substrate, an array substrate and a liquid crystal layer, the color film substrate and the array substrate are oppositely arranged, the liquid crystal layer is positioned between the color film substrate and the array substrate, and the display panel also comprises: the reflection film is attached to one side, back to the liquid crystal layer, of the color film substrate; the plurality of spacing columns are sequentially arranged between the array substrate and the color film substrate at intervals and used for absorbing light rays to achieve the purpose of peep prevention; the two-dimensional dimming material layer is arranged on one side, back to the color film substrate, of the reflection film, can deflect along with the change of an electric field so as to adjust the peep-proof angle, and light reflected by the two-dimensional dimming material layer is reflected by the reflection film so as to increase the light transmittance and the visual angle of the display panel. The display panel provided by the embodiment of the invention can prevent peeping and does not sacrifice brightness.
Description
Technical Field
The present invention relates to the field of liquid crystal display technologies, and in particular, to a display panel and a display device having the same.
Background
When a general peep-proof display device displays a picture, in order to achieve a good peep-proof effect, a certain brightness is generally sacrificed, and an angle-adjustable display effect cannot be achieved.
Disclosure of Invention
The invention aims to provide a display panel and a display device with the same.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
the display panel according to the embodiment of the first aspect of the present invention includes a color film substrate and an array substrate that are disposed opposite to each other, and a liquid crystal layer located between the color film substrate and the array substrate, and the display panel further includes:
the reflection film is attached to one side, back to the liquid crystal layer, of the color film substrate;
the plurality of spacing columns are sequentially arranged between the array substrate and the color film substrate at intervals and used for absorbing light rays to achieve the purpose of peep prevention;
the two-dimensional dimming material layer is arranged on one side, back to the color film substrate, of the reflection film, can deflect along with the change of an electric field so as to adjust the peep-proof angle, and light reflected by the two-dimensional dimming material layer is reflected by the reflection film so as to increase the light transmittance and the visual angle of the display panel.
Further, the display panel further includes:
the first electrode is arranged on one side, back to the reflecting film, of the two-dimensional dimming material layer;
the second electrode is attached to one side, back to the color film substrate, of the reflection film and located between the reflection film and the two-dimensional dimming material layer, and the second electrode is matched with the first electrode to adjust an electric field.
Further, the first electrode is a transparent material, the first electrode is formed in a planar shape and covers the two-dimensional dimming material layer, the second electrode is formed in a plurality of block shapes, and the plurality of second electrodes are sequentially arranged on the reflecting film at intervals so that the two-dimensional dimming material layer deflects and is matched with the reflecting film to reflect light rays so as to improve light ray transmittance.
Further, indium tin oxide is used for the first electrode and the second electrode.
Further, the display panel further includes: and the packaging cover plate is positioned on one side of the first electrode, which faces away from the color film substrate, and the first electrode is positioned on the packaging cover plate.
Further, the display panel further includes: the supporting pieces are sequentially arranged between the packaging cover plate and the color film substrate at intervals to support the packaging cover plate.
Further, the absorbance of the spacer is greater than 4.
Further, the thickness of two-dimensional dimming material layer is 2um-5 um.
Further, the two-dimensional dimming material layer is a graphene oxide material piece.
Furthermore, the reflective film is formed by alternately stacking at least two thin film layers, and the refractive index of the thin film layers in the direction towards the color film substrate is gradually reduced.
In another aspect, a display device having the display panel is provided.
The embodiment of the invention has the following beneficial effects:
among the above-mentioned scheme, absorb certain light through the spacer, the two-dimensional material layer of adjusting luminance deflects with adjusting the peep-proof angle along with electric field variation, simultaneously, cooperate through reflectance coating and two-dimensional material layer of adjusting luminance and can heighten luminousness and visual angle, that is to say, this display panel both can the peep-proof, can not sacrifice luminance again.
Drawings
FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a spacer for a display panel according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line M-M of FIG. 2;
FIG. 4 is a cross-sectional view taken along line N-N of FIG. 2;
FIG. 5 is a schematic view of another structure of a spacer for a display panel according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line P-P of FIG. 5;
FIG. 7 is a cross-sectional view taken along line Q-Q of FIG. 5;
FIG. 8 is a schematic diagram illustrating an internal structure of a two-dimensional light modulation material layer of a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a structure of a two-dimensional light modulation material layer of a display panel under the action of an electric field according to an embodiment of the present invention;
fig. 10 is a schematic view of another structure of a two-dimensional dimming material layer of a display panel under the action of an electric field according to an embodiment of the present invention.
Reference numerals:
a display panel 100;
an array substrate 10; a first electrode 11; a second electrode 12;
a color film substrate 20;
a liquid crystal layer 30;
a reflective film 40;
a two-dimensional layer of dimming material 50;
the spacer columns 60;
a package cover 70;
a support 80.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a display panel 100, which aims at the problem that the brightness of the display panel is sacrificed in the anti-peeping design of the display panel in the prior art.
As shown in fig. 1 to 8, the display panel 100 includes a color filter substrate 20 and an array substrate 10, which are oppositely disposed, and a liquid crystal layer 30 located between the color filter substrate 20 and the array substrate 10, and the display panel 100 further includes a reflective film 40, a plurality of spacers 60, and a two-dimensional light modulation material layer 50.
Specifically, the reflective film 40 is attached to one side of the color film substrate 20 facing away from the liquid crystal layer 30, the spacers 60 are sequentially arranged between the array substrate 10 and the color film substrate 20 at intervals to absorb light to achieve the anti-peeping purpose, the two-dimensional dimming material layer 50 is arranged on one side of the reflective film 40 facing away from the color film substrate 20, the two-dimensional dimming material layer 50 can deflect along with the change of an electric field to adjust the anti-peeping angle, that is, the anti-peeping effect is achieved through adjustment of the visible angle, a certain transmittance loss occurs in the process of achieving the anti-peeping, but light outside the visible angle range can be reflected to the reflective film 40 by the two-dimensional dimming material layer 50, the light reflected by the two-dimensional dimming material layer 50 is reflected and scattered by the reflective film 40 to be reused, and the light transmittance and the visible angle of the display panel 100.
It should be noted that the color filter substrate 20 is disposed on one side of the array substrate 10 and spaced apart from the array substrate 10, the liquid crystal layer 30 is disposed between the array substrate 10 and the color filter substrate 20, the reflective film 40 is attached to one side of the color filter substrate 20 opposite to the liquid crystal layer 30, and the plurality of spacers 60 are disposed between the array substrate 10 and the color filter substrate 20 at intervals, as shown in fig. 2 to 7, the spacers 60 have a strong light absorption capability to achieve a certain peep-proof effect, and meanwhile, the patterned spacers 60 can also prevent the display panel 100 from warping, thereby ensuring uniformity of front luminance of the display panel 100, the two-dimensional dimming material layer 50 is in a completely transparent state in a vertical electric field to achieve a good display effect, and with a change of the electric field, an internal structure of the two-dimensional dimming material layer 50 deflects from the vertical state to a horizontal direction, because a surface of the two-dimensional dimming material layer 50 has a certain reflection function, the light reflected by the two-dimensional dimming material layer 50 is reflected by the reflective film 40 to increase the viewing angle and the light transmittance of the display device 100, that is, the display effect of the positive viewing angle is not affected even when the displayable angle is changed.
Therefore, according to the display panel 100 of the embodiment of the invention, a certain light is absorbed by the spacers 60, the two-dimensional dimming material layer 50 deflects with the change of the electric field to adjust the peep-proof angle, and meanwhile, the light transmittance and the visual angle can be increased by matching the reflective film 40 with the two-dimensional dimming material layer 50, that is, the display panel 100 can prevent peeping without sacrificing the brightness.
According to some embodiments of the present invention, the display panel 100 further includes a first electrode 11 and a second electrode 12.
Specifically, the first electrode 11 is disposed on a side of the two-dimensional dimming material layer 50 facing away from the reflective film 40, the second electrode 12 is attached to a side of the reflective film 40 facing away from the color filter substrate 20 and located between the reflective film 40 and the two-dimensional dimming material layer 50, and the second electrode 12 cooperates with the first electrode 11 to adjust an electric field so as to deflect the two-dimensional dimming material layer 50 and cooperate with the reflective film 40 to reflect light to improve light transmittance.
Specifically, the second electrode 12 cooperates with the first electrode 11 to adjust the electric field so as to deflect the two-dimensional dimming material layer 50, the two-dimensional dimming material layer 50 under the action of the electric field cooperates with the reflective film 40 to improve the light transmittance, the front viewing angle can reduce the light transmittance due to the reflection of the two-dimensional dimming material layer 50, but the light transmittance can be further increased through the reflective film 40, that is, even under the condition of changing the displayable angle, the display effect of the front viewing angle cannot be affected.
Preferably, the first electrode 11 is a transparent material, the first electrode 11 is formed in a planar shape and covers the two-dimensional dimming material layer 50, the second electrode 12 is formed in a plurality of block shapes, and the plurality of second electrodes 12 are sequentially arranged on the reflective film 40 at intervals.
That is, the first electrode 11 may be a transparent material or another material may be selected according to specific situations, the transparent first electrode 11 has good light transmittance, the second electrode 12 is formed in a plurality of blocks, and the first electrode 11 and the second electrode 12 have simple structures and are convenient to mount and use.
According to an embodiment of the present invention, the first electrode 11 and the second electrode 12 are made of Indium Tin Oxide (ITO), which is a transparent conductive material.
According to another embodiment of the present invention, the display panel 100 further includes an encapsulation cover plate 70, the encapsulation cover plate 70 is located on a side of the first electrode 11 opposite to the color filter substrate 20, and the first electrode 11 is located on the encapsulation cover plate 70, where the encapsulation cover plate 70 may be a glass cover plate, and the glass cover plate has good light transmittance.
Preferably, the display panel 100 further includes a plurality of supporting members 80, the supporting members 80 are sequentially disposed between the package cover 70 and the color filter substrate 20 at intervals to support the package cover 70, and the supporting members 80 make the structure of the display panel 100 more stable.
According to an embodiment of the present invention, the absorbance of the spacer 60 is greater than 4, and when the viewing angle is large, the transmittance of the display panel 100 gradually decreases, so that the peep-proof effect can be achieved.
In one embodiment of the present invention, the thickness of the two-dimensional dimming material layer 50 is 2um to 5um, and the two-dimensional dimming material layer 50 with the thickness has a good use effect.
Optionally, the two-dimensional dimming material layer 50 is a piece of graphene oxide material.
Specifically, as shown in fig. 8, the internal structure of the graphene oxide is affected by the electric field and deflects along the direction indicated by the arrow C in the figure, as shown in fig. 9 and 10, after the graphene oxide deflects along with different electric fields (the arrows a and B in the figure respectively indicate the directions of different electric fields), the display area can be increased, the reflective film 40 can increase the brightness of the visible area, and the display effect can be improved, when the graphene oxide deflects along with the vertical electric field, the graphene oxide is in a completely transparent state in the vertical direction, and after the graphene oxide deflects along with the electric field, the adjustment of the visible angle can be achieved by reflection, and the transmittance can be improved by matching with the reflective film 40.
According to an embodiment of the present invention, the reflective film 40 is formed by alternately stacking at least two thin film layers, and the refractive index of the thin film layers in the direction toward the color filter substrate 20 gradually decreases, specifically, the reflective film 40 may be formed by alternately stacking two material thin film layers with a refractive index from high to low in N layers (where N >1), and the optical thickness of each thin film layer is λ/4(λ is a wavelength).
Further, when the display panel 100 according to the embodiment of the present invention works, different voltages are applied to the electrodes above and below the two-dimensional light modulation material layer 50 to form a vertical electric field, the two-dimensional light modulation material layer 50 is arranged along the electric field direction, and a completely transparent state is present in the vertical direction, so as to achieve a display effect, it should be noted that, as shown in fig. 9, the light emitted from the display panel 100 can pass through the reflective film 40 and then pass through the two-dimensional light modulation material layer 50 to be emitted.
When the signal of the first electrode 11 is kept unchanged and different voltages are applied to the second electrode 12 on the back side of the color filter substrate 20, the two-dimensional dimming material layer 50 deflects from the vertical state to the horizontal direction as the voltage difference increases, and the surface of the two-dimensional dimming material layer 50 has a certain reflection effect and is matched with the reflective film 40 on the color filter substrate 20, so that the viewing angle of the display panel 100 is increased. In addition, although the light transmittance is reduced at the positive viewing angle due to the reflection of the two-dimensional dimming material layer 50, the light transmittance can be further increased by the reflective film 40 of the color filter substrate 20, as shown in fig. 10, the display effect at the positive viewing angle is not affected even when the displayable angle is changed.
In summary, according to the display panel 100 of the embodiment of the invention, a certain light is absorbed by the spacers 60, the two-dimensional dimming material layer 50 deflects with the change of the electric field to adjust the peep-proof angle, and simultaneously, the light transmittance and the viewing angle can be increased by the reflection film 40 matching with the two-dimensional dimming material layer 50, that is, the display panel 100 can prevent peeping without sacrificing the brightness.
The embodiment of the invention also provides a display device with the display panel 100, and because the display panel 100 according to the above embodiment of the invention has the above technical effects, the display device according to the embodiment of the invention also has corresponding technical effects, and can prevent peeping without sacrificing brightness.
The construction and operation of the display device according to the embodiment of the present invention are understood and easily implemented by those skilled in the art, and thus will not be described in detail.
In the embodiments of the methods of the present invention, the sequence numbers of the steps are not used to limit the sequence of the steps, and for those skilled in the art, the sequence of the steps is not changed without creative efforts.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate and the array substrate are arranged oppositely, and the liquid crystal layer is positioned between the color film substrate and the array substrate, and the display panel is characterized by further comprising:
the reflection film is attached to one side, back to the liquid crystal layer, of the color film substrate;
the plurality of spacing columns are sequentially arranged between the array substrate and the color film substrate at intervals and used for absorbing light rays to achieve the purpose of peep prevention;
the two-dimensional dimming material layer is arranged on one side, back to the color film substrate, of the reflection film, can deflect along with the change of an electric field so as to adjust the peep-proof angle, and light rays reflected by the two-dimensional dimming material layer are reflected by the reflection film so as to increase the light transmittance and the visible angle of the display panel;
the reflecting film can transmit light, and the light emitted by the display panel can pass through the reflecting film and then pass through the two-dimensional dimming material layer.
2. The display panel according to claim 1, further comprising:
the first electrode is arranged on one side, back to the reflecting film, of the two-dimensional dimming material layer;
the second electrode is attached to one side, back to the color film substrate, of the reflection film and located between the reflection film and the two-dimensional dimming material layer, and the second electrode and the first electrode are matched to adjust an electric field so that the two-dimensional dimming material layer deflects and is matched with the reflection film to reflect light rays so as to improve light ray transmittance.
3. The display panel according to claim 2, wherein the first electrode is a transparent material, the first electrode is formed in a planar shape and covers the two-dimensional dimming material layer, the second electrode is formed in a plurality of block shapes, and the plurality of second electrodes are sequentially arranged on the reflective film at intervals.
4. The display panel according to claim 2, wherein the first electrode and the second electrode are made of indium tin oxide.
5. The display panel according to claim 2, further comprising:
and the packaging cover plate is positioned on one side of the first electrode, which faces away from the color film substrate, and the first electrode is positioned on the packaging cover plate.
6. The display panel according to claim 5, further comprising:
the supporting pieces are sequentially arranged between the packaging cover plate and the color film substrate at intervals to support the packaging cover plate.
7. The display panel of claim 1, wherein the two-dimensional layer of dimming material has a thickness of 2um to 5 um.
8. The display panel of claim 1, wherein the two-dimensional layer of dimming material is a graphene oxide material.
9. The display panel according to claim 1, wherein the reflective film is formed by alternately stacking at least two kinds of thin film layers, and a refractive index of the thin film layers in a direction toward the color filter substrate is gradually decreased.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400727.7A CN108594514B (en) | 2018-04-28 | 2018-04-28 | Display panel and display device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810400727.7A CN108594514B (en) | 2018-04-28 | 2018-04-28 | Display panel and display device with same |
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| CN108594514A CN108594514A (en) | 2018-09-28 |
| CN108594514B true CN108594514B (en) | 2020-12-01 |
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| CN201810400727.7A Active CN108594514B (en) | 2018-04-28 | 2018-04-28 | Display panel and display device with same |
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| CN109375388B (en) * | 2018-10-31 | 2022-06-17 | 京东方科技集团股份有限公司 | Light control structure, display device and working method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197844A (en) * | 1997-01-09 | 1998-07-31 | Sharp Corp | Liquid crystal display device |
| CN103323970A (en) * | 2013-06-20 | 2013-09-25 | 京东方科技集团股份有限公司 | Display panel, preparation method of display panel and display device |
| CN105467655A (en) * | 2015-12-10 | 2016-04-06 | 昆山龙腾光电有限公司 | Display assembly, display device, and manufacturing method |
| CN105607315A (en) * | 2016-03-17 | 2016-05-25 | 深圳市锐丽创科技有限公司 | Display module and convertible peeping preventing displayer |
| CN107121828A (en) * | 2017-06-19 | 2017-09-01 | 合肥市惠科精密模具有限公司 | A kind of liquid crystal display module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008286993A (en) * | 2007-05-17 | 2008-11-27 | Toshiba Matsushita Display Technology Co Ltd | Display device |
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- 2018-04-28 CN CN201810400727.7A patent/CN108594514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197844A (en) * | 1997-01-09 | 1998-07-31 | Sharp Corp | Liquid crystal display device |
| CN103323970A (en) * | 2013-06-20 | 2013-09-25 | 京东方科技集团股份有限公司 | Display panel, preparation method of display panel and display device |
| CN105467655A (en) * | 2015-12-10 | 2016-04-06 | 昆山龙腾光电有限公司 | Display assembly, display device, and manufacturing method |
| CN105607315A (en) * | 2016-03-17 | 2016-05-25 | 深圳市锐丽创科技有限公司 | Display module and convertible peeping preventing displayer |
| CN107121828A (en) * | 2017-06-19 | 2017-09-01 | 合肥市惠科精密模具有限公司 | A kind of liquid crystal display module |
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