CN110673383A - Display panel and preparation method thereof - Google Patents
Display panel and preparation method thereof Download PDFInfo
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- CN110673383A CN110673383A CN201910907286.4A CN201910907286A CN110673383A CN 110673383 A CN110673383 A CN 110673383A CN 201910907286 A CN201910907286 A CN 201910907286A CN 110673383 A CN110673383 A CN 110673383A
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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
- G02F1/133502—Antiglare, refractive index matching layers
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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
Abstract
The application provides a display panel and a preparation method thereof, the display panel comprises: a substrate; the light absorption layer is arranged on the substrate in a grid shape; and the shading layer covers the light absorption layer in a grid shape, and the light absorption layer is used for absorbing light with the wavelength within a preset range. This application is through setting up one deck light-absorbing layer between base plate and light shield layer, and when external ambient light shines at display panel, light-absorbing layer can reduce the reflection of ambient light, consequently can improve display panel's anti-reflection ability, and then improves display panel's contrast.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
With the development of the optoelectronic and semiconductor technologies, the development of flat panel displays has been increased, and among the flat panel displays, Liquid Crystal Displays (LCDs) have been applied to various aspects of production and living due to their excellent characteristics, such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference.
However, when the display device is used outdoors or in a high-luminance environment, the screen of the display device easily reflects ambient light, reducing the contrast of the display device.
Disclosure of Invention
The embodiment of the application provides a display panel and a preparation method thereof, which can reduce the reflection of ambient light, so that the anti-reflection capability of the display panel can be improved, and the contrast of the display panel is further improved.
In a first aspect, the present application provides a display panel comprising:
a substrate;
the light absorption layer is arranged on the substrate in a grid shape and is used for absorbing light with the wavelength within a preset range; and
the light shading layer covers in latticed the light absorption layer.
In the display panel provided by the present application, the light absorbing layer includes a plurality of first light absorbing stripes and a plurality of second light absorbing stripes; the plurality of first light absorption strips are arranged along a first direction, the plurality of second light absorption strips are arranged along a second direction, and the first direction is perpendicular to the second direction.
In the display panel provided by the present application, the display panel further includes a plurality of sub-pixels; the plurality of first light absorption strips and the plurality of second light absorption strips are arranged in a crossed mode to form a plurality of sub-pixel areas, and each sub-pixel area is provided with one sub-pixel.
In the display panel provided by the present application, the light shielding layer includes a plurality of first light shielding strips and a plurality of second light shielding strips, the plurality of first light shielding strips are arranged along a first direction, and the plurality of second light shielding strips are arranged along a second direction;
the first light-shielding strip and the first light-absorbing strip are positioned in the same column, and the first light-shielding strip covers the first light-absorbing strip; and the second light shading strips and the second light absorption strips are positioned in the same row, and the second light shading strips cover the second light absorption strips.
In the display panel provided by the present application, the light absorbing layer includes a first sub light absorbing layer and a second sub light absorbing layer;
wherein, first sub light absorption layer sets up on the base plate, the sub light absorption layer of second sets up on the first sub light absorption layer, just the sub light absorption layer of second covers first sub light absorption layer, the light shield layer sets up on the sub light absorption layer of second, just the light shield layer covers the sub light absorption layer of second.
In the display panel that this application provided, be provided with a plurality of nanoparticles in the sub light absorption layer, the nanoparticle is used for absorbing the light of wavelength in predetermineeing the within range.
In the display panel provided by the present application, the nanoparticles have a diameter of 10 to 20 nm.
In a second aspect, the present application provides a method for manufacturing a display panel, including:
providing a substrate;
forming a light absorbing layer on the substrate;
forming a light shielding layer on the light absorbing layer, wherein the light shielding layer covers the light absorbing layer.
In the method for manufacturing a display panel provided by the present application, the forming a light absorbing layer on the substrate includes:
coating a photoresist layer on the substrate;
patterning the photoresist layer to form a plurality of photoresist blocks which are arranged at intervals, wherein a gap is formed between every two adjacent photoresist blocks;
and coating a light absorbing material at the gap between the adjacent photoresist blocks to form a light absorbing layer.
In the method for manufacturing a display panel provided by the present application, the forming a light shielding layer on the light absorbing layer includes:
coating a light-shielding material on the light-absorbing layer;
and solidifying the light shielding material, and carrying out patterning treatment on the solidified light shielding material to form a light shielding layer on the light absorption layer.
The application provides a display panel and a preparation method thereof, the display panel comprises: a substrate; the light absorption layer is arranged on the substrate in a grid shape; and the shading layer covers the light absorption layer in a grid shape, and the light absorption layer is used for absorbing light with the wavelength within a preset range. This application is through setting up one deck light-absorbing layer between base plate and light shield layer, and when external ambient light shines at display panel, light-absorbing layer can reduce the reflection of ambient light, consequently can improve display panel's anti-reflection ability, and then improves display panel's contrast.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel provided in the present application;
FIG. 2 is a schematic diagram of a light absorbing layer in the display panel shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the display panel of FIG. 1 along direction AA' according to the first embodiment;
FIG. 4 is a schematic cross-sectional view of a second embodiment of the display panel shown in FIG. 1 along the A-A' direction;
fig. 5 is a schematic flow chart of a manufacturing method of a display panel provided in the present application;
fig. 6 is a schematic step diagram of a method for manufacturing a display panel provided in the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of a display panel provided in the present application, fig. 2 is a schematic structural diagram of a light absorbing layer in the display panel shown in fig. 1, and fig. 3 is a schematic cross-sectional diagram of a first embodiment of the display panel shown in fig. 1 along direction AA'.
The present application provides a display panel 1, the display panel 1 includes a substrate 10, a light absorbing layer 20, and a light shielding layer 30. The light absorbing layer 20 is disposed on the substrate 10 in a grid shape, the light absorbing layer 20 is used for absorbing light with a wavelength within a predetermined range, and the light shielding layer 30 covers the light absorbing layer 20 in a grid shape.
Specifically, the substrate 10 may be a flexible substrate, that is, in some embodiments, the material of the substrate 10 is Polyimide (PI). The setting is carried out according to the actual situation. The light absorbing layer 20 having a mesh-like structure and the light shielding layer 30 having a mesh-like structure may be formed on the substrate 10. The light absorbing layer 20 may be configured to absorb visible light, i.e., the light absorbing layer 20 is configured to absorb light having a wavelength of 380 nm to 780 nm. The light-shielding layer 30 can be used to separate adjacent color resists, shield color gaps, and prevent light leakage or color mixing. The technology of fabricating the black matrix On the array substrate is called BOA (bm On array), and BOA can solve the problem of mismatch of light-shielding regions caused by misalignment of the upper and lower substrates, which is particularly useful for curved displays. The COA (color filter on array) technology is a technology for preparing a color resistor originally prepared on a color film substrate on an array substrate, and can improve signal delay on a metal line, provide a panel aperture ratio, and improve panel display quality. In addition, in some embodiments, the material of the light shielding layer 30 may be a black resin material.
For example, ambient light enters the display panel 1 and is reflected inside the substrate 10. Since the light absorbing layer 20 is disposed between the light shielding layer 30 and the substrate 10, the light absorbing layer 20 eliminates the reflected light of the substrate 10 to reduce the reflection of the ambient light, thereby improving the anti-reflection capability of the display panel 1 and further improving the contrast of the display panel 1.
The light absorbing layer 20 includes a plurality of first light absorbing stripes 201 and a plurality of second light absorbing stripes 202, the plurality of first light absorbing stripes 201 are disposed along a first direction, the plurality of second light absorbing stripes 202 are disposed along a second direction, and the first direction is perpendicular to the second direction. For example, the first direction is a vertical direction, and the second direction is a horizontal direction, that is, the first direction is perpendicular to the second direction. Of course, the first direction may also be a horizontal direction, and the second direction may also be a vertical direction, which is specifically set according to the actual situation. The figure is only exemplified with the first direction as a vertical direction and the second direction as a horizontal direction.
The light-shielding layer 30 includes a plurality of first light-shielding strips 301 and a plurality of second light-shielding strips 302, the plurality of first light-shielding strips 301 are disposed along a first direction, and the plurality of second light-shielding strips 302 are disposed along a second direction. In some embodiments, each first light-shielding bar 301 corresponds to one first light-shielding bar 201, and each second light-shielding bar 302 corresponds to one second light-shielding bar 202.
The first light-shielding strip 301 and the first light-absorbing strip 201 are located in the same column, and the first light-shielding strip 301 covers the first light-absorbing strip 201. The second light-shielding strip 302 and the second light-absorbing strip 202 are located in the same row, and the second light-shielding strip 302 covers the second light-absorbing strip 202. That is, the first light-shielding strip 301 in the nth column covers the first light-shielding strip 201 in the nth column, and the second light-shielding strip 302 in the nth row covers the second light-shielding strip 202 in the nth row, where n is greater than or equal to 1.
In addition, the display panel 1 further includes a plurality of sub-pixels 51, the plurality of first light-absorbing stripes 201 and the plurality of second light-absorbing stripes 202 are arranged in an intersecting manner to form a plurality of sub-pixel regions 101, and each sub-pixel region 101 is provided with one sub-pixel 51. The sub-pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
Referring to fig. 4, fig. 4 is a schematic cross-sectional view of the display panel shown in fig. 1 along a direction a-a' according to a second embodiment. In some embodiments, the light absorbing layer 20 includes a first sub light absorbing layer 21 and a second sub light absorbing layer 22. The first sub light absorption layer 21 is disposed on the substrate 10, the second sub light absorption layer 22 is disposed on the first sub light absorption layer 21, and the second sub light absorption layer 22 covers the first sub light absorption layer 21. The light shielding layer 30 is disposed on the second sub light absorption layer 22, and the light shielding layer 30 covers the second sub light absorption layer 22.
A plurality of nanoparticles 50 are disposed in the first sub light absorption layer 21, and the nanoparticles 50 are used for absorbing light with a wavelength within a predetermined range. In some embodiments, the nanoparticles 50 have a diameter of 10 nanometers to 20 nanometers.
Specifically, for example, a photoresist layer may be formed on the substrate 10, and then, a solution having nanoparticles may be further coated on the photoresist layer to form the first light absorption sub-layer 21 having the nanoparticles 50 on the substrate 10; for another example, a mixed solution of the nanoparticles 50 and the photoresist is prepared in advance, and then the mixed solution is coated on the substrate 10. Next, the substrate 10 is subjected to a curing process to form the first sub light absorption layer 21 having the nanoparticles 50 on the substrate 10. It should be noted that the material of the nanoparticles 50 may be Indium Tin Oxide (ITO). It should be further noted that the photoresist is selected to be mixed with the nanoparticles 50 so that after the ambient light enters the substrate 10 and is reflected, the reflected light can pass through the first sub light absorption layer 21 and generate the localized surface plasmon resonance with the nanoparticles 50, thereby achieving the purpose of absorbing the reflected light. In addition, the material of the second sub light absorption layer 22 may be metal, for example, silver. If the reflected light can pass through the first sub light absorption layer 21 without having the localized surface plasmon resonance with the nanoparticles 50, the second sub light absorption layer 22 can reflect the reflected light again, so that the reflected light can have the localized surface plasmon resonance with the nanoparticles 50, thereby achieving the purpose of absorbing the reflected light.
By arranging the light absorbing layer 20 between the substrate 10 and the light shielding layer 30, when external ambient light irradiates the display panel 1, the nanoparticles 50 in the first light absorbing layer 21 can generate local surface plasmon resonance with the reflected light, and the second sub light absorbing layer 22 can reflect the reflected light again, so that the reflected light and the nanoparticles 50 generate local surface plasmon resonance, thereby reducing the reflection of the ambient light and further achieving the purpose of absorbing the reflected light, and therefore, the anti-reflection capability of the display panel 1 can be improved, and the contrast of the display panel 1 is improved.
Referring to fig. 5, fig. 5 is a schematic flow chart of a manufacturing method of a display panel provided in the present application. The application provides a preparation method of a display panel, which comprises the following steps:
110. a substrate is provided.
Specifically, the substrate 10 may be a flexible substrate or a rigid substrate, and is set according to actual conditions.
120. A light absorbing layer is formed on a substrate.
In order not to affect the light emission of the display panel, therefore, a light absorbing layer having a mesh-like structure may be formed on the substrate. After the ambient light enters the substrate and is reflected, the reflected light of the ambient light can be effectively absorbed under the condition of ensuring normal luminescence.
In some embodiments, the step of forming a light absorbing layer on the substrate may include:
a photoresist layer is coated on the substrate.
And patterning the photoresist layer to form a plurality of photoresist blocks arranged at intervals.
A light absorbing material is applied to the gaps between adjacent photoresist blocks to form light absorbing layers.
First, a photoresist layer is coated on a substrate, and then the photoresist layer is subjected to a patterning process, for example, an etching process, to form a plurality of photoresist blocks arranged at intervals on the substrate. Wherein, a gap is arranged between the adjacent photoresist blocks. Finally, a light absorbing material is applied to the gaps between the adjacent photoresist blocks to form a light absorbing layer having a lattice-like structure.
130. A light shielding layer is formed on the light absorbing layer.
For example, a light shielding material, which may be a black resin material, is coated on the light absorbing layer having the mesh-like structure for preventing light leakage of the display panel. Then, the light-shielding material is subjected to curing treatment, and the cured light-shielding material is etched to form a light-shielding layer having a mesh-like structure on the light-absorbing layer.
Referring to fig. 6, fig. 6 is a schematic step diagram of a method for manufacturing a display panel according to the present application. First, a photoresist material is coated on the substrate 10, and the photoresist material is cured to form a photoresist layer 60 on the substrate 10. Then, the photoresist layer 60 may be subjected to an etching process to form a plurality of photoresist blocks 600 arranged at intervals on the substrate 10. Wherein a gap is formed between adjacent photoresist blocks 600. Next, a light absorbing material is coated at a gap between adjacent photoresist blocks 600 and is subjected to a curing process to form a light absorbing layer 20 having a lattice-like structure on the substrate 10. It is noted that, in some embodiments, a solution containing nanoparticles may be applied to the gap between the adjacent photoresist blocks 600 and the substrate 10 may be subjected to a curing process to form the first sub light absorption layer 21 on the substrate 10. Then, the substrate on which the first sub light absorption layer 21 is formed is placed in an anion solution, and the second sub light absorption layer 22 is formed on the first sub light absorption layer 21 by an electro-reduction method. Then, a light shielding material is coated on the light absorbing layer 20 having the lattice-shaped structure, and finally, the light shielding material is cured and the cured light shielding material is etched to form a light shielding layer 30 having a lattice-shaped structure on the light absorbing layer 20.
This application is through setting up one deck light-absorbing layer between base plate and light shield layer, and when external ambient light shines at display panel, light-absorbing layer can reduce the reflection of ambient light, consequently can improve display panel's anti-reflection ability, and then improves display panel's contrast.
The display panel and the method for manufacturing the same provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by using specific examples, and the descriptions of the above embodiments are only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A display panel, comprising:
a substrate;
the light absorption layer is arranged on the substrate in a grid shape and is used for absorbing light with the wavelength within a preset range; and
the light shading layer covers in latticed the light absorption layer.
2. The display panel of claim 1, wherein the light absorbing layer comprises a plurality of first light absorbing stripes and a plurality of second light absorbing stripes; the plurality of first light absorption strips are arranged along a first direction, the plurality of second light absorption strips are arranged along a second direction, and the first direction is perpendicular to the second direction.
3. The display panel of claim 2, further comprising a plurality of sub-pixels; the plurality of first light absorption strips and the plurality of second light absorption strips are arranged in a crossed mode to form a plurality of sub-pixel areas, and each sub-pixel area is provided with one sub-pixel.
4. The display panel according to claim 3, wherein the light-shielding layer comprises a plurality of first light-shielding stripes and a plurality of second light-shielding stripes, the plurality of first light-shielding stripes are arranged along a first direction, and the plurality of second light-shielding stripes are arranged along a second direction;
the first light-shielding strip and the first light-absorbing strip are positioned in the same column, and the first light-shielding strip covers the first light-absorbing strip; and the second light shading strips and the second light absorption strips are positioned in the same row, and the second light shading strips cover the second light absorption strips.
5. The display panel according to claim 1, wherein the light absorbing layer comprises a first sub light absorbing layer and a second sub light absorbing layer;
wherein, first sub light absorption layer sets up on the base plate, the sub light absorption layer of second sets up on the first sub light absorption layer, just the sub light absorption layer of second covers first sub light absorption layer, the light shield layer sets up on the sub light absorption layer of second, just the light shield layer covers the sub light absorption layer of second.
6. The display panel according to claim 2, wherein a plurality of nanoparticles are disposed in the light absorbing layer, and the nanoparticles are configured to absorb light having a wavelength within a predetermined range.
7. The display panel of claim 6, wherein the nanoparticles have a diameter of 10 nm to 20 nm.
8. A method for manufacturing a display panel, comprising:
providing a substrate;
forming a light absorbing layer on the substrate;
forming a light shielding layer on the light absorbing layer, wherein the light shielding layer covers the light absorbing layer.
9. The method of claim 8, wherein the forming a light absorbing layer on the substrate comprises:
coating a photoresist layer on the substrate;
patterning the photoresist layer to form a plurality of photoresist blocks which are arranged at intervals, wherein a gap is formed between every two adjacent photoresist blocks;
and coating a light absorbing material at the gap between the adjacent photoresist blocks to form a light absorbing layer.
10. The method for manufacturing a light-absorbing layer according to claim 9, wherein the forming of a light-shielding layer on the light-absorbing layer includes:
coating a light-shielding material on the light-absorbing layer;
and solidifying the light shielding material, and carrying out patterning treatment on the solidified light shielding material to form a light shielding layer on the light absorption layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907286.4A CN110673383A (en) | 2019-09-24 | 2019-09-24 | Display panel and preparation method thereof |
| PCT/CN2019/117807 WO2021056743A1 (en) | 2019-09-24 | 2019-11-13 | Display panel and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907286.4A CN110673383A (en) | 2019-09-24 | 2019-09-24 | Display panel and preparation method thereof |
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| CN110673383A true CN110673383A (en) | 2020-01-10 |
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| CN201910907286.4A Pending CN110673383A (en) | 2019-09-24 | 2019-09-24 | Display panel and preparation method thereof |
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| WO (1) | WO2021056743A1 (en) |
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| CN108681166A (en) * | 2018-05-16 | 2018-10-19 | 京东方科技集团股份有限公司 | A kind of preparation method of substrate for display, substrate for display and display device |
| CN109699124A (en) * | 2019-01-28 | 2019-04-30 | 青岛九维华盾科技研究院有限公司 | A method of transparency electromagnetic wave shield film is prepared by photoetching and chemical reduction method |
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