CN211857132U - Color film substrate and display device - Google Patents
Color film substrate and display device Download PDFInfo
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- CN211857132U CN211857132U CN202020583863.7U CN202020583863U CN211857132U CN 211857132 U CN211857132 U CN 211857132U CN 202020583863 U CN202020583863 U CN 202020583863U CN 211857132 U CN211857132 U CN 211857132U
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Abstract
The utility model provides a various membrane base plate and display device, wherein, various membrane base plate includes the base plate, sets up the first planarization layer on the base plate, sets up on the base plate and is located the barricade structure between base plate and the first planarization layer, is provided with a plurality of shading units and a plurality of light conversion unit on the first planarization layer, and a plurality of light conversion unit set up between the shading unit, and the orthographic projection of shading unit on the base plate overlaps with the orthographic projection of barricade structure on the base plate. The utility model discloses a various membrane base plate is owing to be provided with the shading unit between the light conversion unit, and is provided with the barricade structure in the first planarization layer that the shading unit corresponds, and the barricade structure can block the light that different light conversion units sent, alleviates the crosstalk between the different color lights, improves the color mixing, has improved the quality of product.
Description
Technical Field
The utility model relates to a display device technical field especially relates to a various membrane base plate and display device.
Background
The existing color film substrate structure comprises a substrate layer, a black matrix and quantum dot layers or quantum well layers, and because the distance between adjacent quantum dot layers or quantum well layers is short, color light crosstalk easily occurs under a certain visual angle, so that cross color is generated, and the product quality is influenced.
Therefore, the prior art is still to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of above-mentioned prior art, the utility model aims at providing a various membrane base plate and display device aims at solving the current various membrane base plate and takes place the chromatic light easily and crosstalk, influences the technical problem of product quality.
The technical scheme of the utility model as follows:
a color filter substrate, comprising:
a substrate;
a first planarization layer disposed over the substrate;
the retaining wall structure is arranged above the substrate and is arranged between the substrate and the first planarization layer;
a plurality of light shielding units disposed over the first planarization layer, and a plurality of light conversion units, each of the light conversion units being disposed between the light shielding units;
wherein, the orthographic projection of the shading unit on the substrate is overlapped with the orthographic projection of the retaining wall structure on the substrate.
Optionally, the color filter substrate further includes: a second planarization layer disposed over the plurality of light-shielding units and the plurality of light-converting units.
Optionally, the width of the orthographic projection of the retaining wall structure on the substrate is greater than or equal to the width of the orthographic projection of the light shielding unit on the substrate.
Optionally, the cross-sectional shape of the retaining wall structure includes a trapezoid.
Optionally, the height of the retaining wall structure is 5 μm to 20 μm.
Optionally, the light conversion unit is a quantum dot layer or a quantum well layer.
Optionally, a shape formed by a plurality of the light shielding units includes a mesh shape.
Optionally, a plurality of support structures are disposed on the second planarization layer.
A display device, comprising: the color film substrate and the display back plate are arranged on the substrate;
the display backplane includes: the backlight module comprises a backboard substrate, a driving array arranged on the backboard substrate, and a light-emitting unit connected with the driving array.
Optionally, a third planarization layer is disposed above the light emitting unit.
The utility model provides a various membrane base plate and display device, wherein, various membrane base plate includes the base plate, sets up the first planarization layer on the base plate, sets up on the base plate and is located the barricade structure between base plate and the first planarization layer, is provided with a plurality of shading units and a plurality of light conversion unit on the first planarization layer, and a plurality of light conversion unit set up between the shading unit, and the orthographic projection of shading unit on the base plate overlaps with the orthographic projection of barricade structure on the base plate. The utility model discloses a various membrane base plate is owing to be provided with the shading unit between the light conversion unit, and is provided with the barricade structure in the first planarization layer that the shading unit corresponds, and the barricade structure can block the light that different light conversion units sent, alleviates the crosstalk between the different color lights, improves the color mixing, has improved the quality of product.
Drawings
Fig. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention;
fig. 2 is a schematic optical path diagram of a color film substrate (viewing angle directly facing the shading unit region) according to an embodiment of the present invention;
fig. 3 is a schematic optical path diagram of a color film substrate (viewing angle directly facing the shading unit region) according to another embodiment of the present invention;
fig. 4 is a schematic optical path diagram of a color film substrate (viewing angle directly facing the light conversion unit region) according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a light shielding unit according to an embodiment of the present invention;
the reference numerals in the figures are as follows:
10-a substrate; 20-a first planarizing layer; 30-a retaining wall structure; 40-a light shielding unit; 50-a light conversion unit; 60-a second planarizing layer; 70-a support structure; 80-a backplane substrate; 90-drive the array; 100-a light emitting unit; 110-a third planarizing layer; 120-frame glue.
Detailed Description
The utility model provides a various membrane base plate and display device, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the utility model provides a pair of various membrane base plate, include:
a substrate 10;
a first planarization layer 20 disposed over the substrate 10;
a retaining wall structure 30 disposed on the substrate 10, wherein the retaining wall structure 30 is disposed between the substrate 10 and the first planarization layer 20;
a light shielding unit 40 disposed over the first planarization layer 20, and a plurality of light conversion units 50, each of the light conversion units 50 being disposed between the light shielding units 40;
in another embodiment, the position of the light shielding unit 40 may also be adjusted, for example, the light shielding unit 40 is disposed between the retaining wall structure 30 and the substrate 10;
wherein, the orthographic projection of the light shielding unit 40 on the substrate 10 overlaps with the orthographic projection of the retaining wall structure 30 on the substrate 10.
In some embodiments, the substrate 10 may be a glass substrate or a flexible substrate of polyethylene terephthalate material. When the substrate is a flexible substrate made of polyethylene terephthalate, the manufactured color film substrate can be bent to a certain radian, and at the moment, the color film substrate can be used for manufacturing curved-surface display equipment.
In some embodiments, the first planarization layer 20 may include a negative photoresist material, where the negative photoresist material includes a photoresist of a cinnamate type, and the type of the first planarization layer 20 is not limited herein, and the negative photoresist material has high light transmittance, and can reduce loss of light emitted from the color filter substrate and improve display brightness.
In some embodiments, the retaining wall structure 30 may be formed by using a high light reflection material or a high light absorption material, such as a light reflection material and a light absorption carbon nano material, and the light reflection material includes titanium dioxide TiO 2. When the retaining wall structure adopts the high light reflection material, the retaining wall structure can not absorb emergent light, so that the reduction of display brightness can be avoided.
In some embodiments, the light shielding unit 40 may be a black matrix, and the black matrix may be a resin material to which a titanium-based black pigment is added. The titanium black pigment has good diffuse reflection effect and low mirror reflectivity, and can absorb more ultraviolet light in the process of exposing the resin material added with the titanium black pigment, so that the curing efficiency of the resin material can be improved.
In some embodiments, the light conversion unit 50 is a quantum dot layer or a quantum well layer. The quantum dot material is a semiconductor material in nanometer level, light with specific frequency can be emitted by applying a certain electric field or light pressure to the quantum dot material, the frequency of the emitted light can be changed along with the change of the size, the color of the emitted light can be controlled by adjusting the size, the quantum well material is a quantum dot material with a special structure, quantum confinement effect exists in the quantum well material, the quantum confinement effect can enable the semiconductor quantum well to present various unique electronic and photonic characteristics with wide application prospect, and the light conversion unit made of the quantum well material can have better light emitting effect.
To illustrate the effect of the present invention, a specific example is described, in which the red quantum dot layer or the quantum well layer, the blue quantum dot layer or the cross color between the quantum well layers is taken as an example, and the pixel width of the red quantum dot layer or the quantum well layer in the display region is assumed to be DrThe emergent light rays are Lr1, Lr2 and Lr3 … … Lrn respectively, and the pixel width of a blue quantum dot layer or a quantum well layer of the display area is DbThe emergent rays are respectively Lb1, Lb2 and Lb3 … … Lbn, and the emergent rays are polarized light vertical to the substrate.
Referring to fig. 2, in the color filter substrate in some embodiments, when the viewing angle of the observer faces the shading unit 40 region, the intensity of light Lr entering human eyes for any light Lr emitted from the red quantum dot layer or the quantum well layer is Lr sin θ r, and the intensity of red light received by human eyes is synthesized as
For any light beam Lb emitted from the blue quantum dot layer or the quantum well layer, the light intensity entering human eyes is Lb sin theta b, and the intensity of blue light received by the human eyes is synthesized into
Referring to fig. 3 and 4, in some embodiments, since the barrier structures 30 are formed between the light shielding unit 40 and the substrate 10, the barrier structures 30 have a certain width and thickness, so that the viewer can not transmit light to the red quantum dot layer or the quantum well layer r0Width and width of blue quantum dot layer or quantum well layer b0The light intensity of the width is invisible, and the light intensity received by human eyes is obviously less than that corresponding to the existing color film substrate
And
the light intensity of (d); when the observation point is located right above the blue quantum dot layer or the quantum well layer, due to the absorption and reflection characteristics of the retaining wall structure 30 with certain thickness and thickness, compared with the prior art, the light intensity of the red quantum dot layer or the quantum well layer received by human eyes still has a region with certain width which is invisible, the red light intensity obtained by the human eyes is also smaller than that of the existing color film substrate, and therefore cross color between the quantum dot layers or the quantum well layers with different colors can be greatly improved.
Referring to fig. 1, in some embodiments, the color filter substrate further includes: a second planarization layer 60 disposed over the plurality of light-shielding units 40 and the plurality of light-converting units 50. The second planarization layer 60 mainly functions to ensure the flatness of the surfaces of the light shielding unit 30 and the light conversion unit 40, and after the second planarization layer 60 is arranged, on one hand, the color film substrate is integrally unified and is not easy to warp, and on the other hand, better display effect can be ensured after the color film substrate is subsequently matched with a display back plate.
Referring to fig. 1, in some embodiments, a plurality of support structures 70 are disposed over the second planarizing layer 60. The supporting structure 70 may be specifically disposed below the second planarizing layer 60 corresponding to the shading unit 30 region, the supporting structure 70 is mainly used for buffer connection between the color film substrate and the display backplane, the supporting structure 70 may be in a shape of a column or a circular truncated cone, the supporting structure 70 may be made of a polystyrene material, a polymethyl methacrylate material, or a polycarbonate material, the materials have better light transmittance, and the supporting structure 70 made of the materials is capable of transmitting light, so that light emitted by the display backplane is not affected to be transmitted to the color film substrate, and the materials are low in cost, strong in plasticity, and have better buffer connection performance.
In some embodiments, the width of the orthographic projection of the retaining wall structure 30 on the substrate 10 is greater than or equal to the width of the orthographic projection of the light shielding unit 40 on the substrate 10. The wider the width of the wall structure 30 is, the better the effect of blocking the cross color light component is, when the width of the orthographic projection of the wall structure 30 on the substrate 10 is exactly the same as the width of the orthographic projection of the light shielding unit 40 on the substrate 10, at this time, the effect of blocking the cross color light component is the best, and the wall structure 30 does not affect the normal light emitting area of the light converting unit 50 because of the too long width, and the width of the coverage area of the light shielding unit 30 on the first planarization layer 20 is fully utilized, so as to achieve the better effect of reducing the cross color.
In some embodiments, the cross-sectional shape of the retaining wall structure 30 includes a trapezoid. In the embodiment that the cross-sectional shape of the retaining wall structure 30 is trapezoidal, the width of the bottom side of the trapezoid close to the substrate is greater than the width of the bottom side of the side close to the light shielding unit, and the two sides of the trapezoid incline outwards, at this time, the probability that light is reflected downwards after hitting the side of the trapezoid is high, compared with the retaining wall structure with a rectangular cross section, the inclined upward light at the two sides of the trapezoidal setting mode of the embodiment is less, the cross color light component can be reduced, the effect of improving the cross color is improved, in other embodiments, the cross-sectional shape of the retaining wall structure 30 further includes a rectangle, a triangle or other polygons.
In some embodiments, the height of the retaining wall structure 30 is 5 μm to 20 μm. For example, the height of the retaining wall structure 30 may be set to 5 μm, 7 μm, 10 μm, 15 μm, or 20 μm, without being limited thereto. The height of the retaining wall structure 30 is one of the factors influencing the color mixing effect improvement, the higher the height is, the better the color mixing effect improvement effect of the retaining wall structure 30 is, but the light intensity emitted by the corresponding light emitting area can be reduced, and in order to take into account the light intensity and improve the color mixing, the height of the retaining wall structure 30 can be selected to be 10 um.
Referring to fig. 5, in some embodiments, a shape formed by a plurality of the light blocking units 40 includes a mesh shape. The plurality of shading units 40 are connected with each other to form a net shape, so that the material consumption can be reduced due to the shared adjacent edges among the plurality of shading units 40, meanwhile, the whole structure is simple, the mask corresponding to the shading units 40 in the later period is convenient to manufacture, the implementation difficulty of the technical scheme is reduced, and in other implementation modes, the shape formed by the shading units 40 further comprises a matrix shape.
Furthermore, referring to fig. 1, the present invention also provides a display device, including: the color film substrate and the display back plate are arranged on the substrate;
the display backplane includes: the backlight module comprises a back plate substrate 80, a driving array 90 arranged on the back plate substrate 80, and a light emitting unit 100 connected with the driving array 90. In some embodiments, the display backplane comprises an array of Thin Film Transistors (TFTs). In some embodiments, the display backplane and the color film substrate are disposed opposite to each other and may be connected by a sealant.
In some embodiments, the light emitting units 100 may be Micro-LEDs or mini-LEDs, which is not limited herein, such that each light emitting unit 100 is disposed on the display backplane, addressing can be achieved, and independent driving and lighting can be achieved, so as to facilitate control of the light emitting units 100 by the driving array 90 on the display backplane, and the distance between the Micro-LEDs can be set to micron level, which can also have better display effect.
Referring to fig. 1, in some embodiments, a third planarization layer 110 is disposed over the light emitting unit 100. In this embodiment, the third planarizing layer 110 is disposed on the light emitting unit 100, the support structure 70 is connected to the third planarizing layer 110, and the third planarizing layer 110 is disposed to planarize the surface of the light emitting unit 100, so as to facilitate connection of the support structure 70 and improve the connection strength, and the edge of the second planarizing layer 60 and the edge of the third planarizing layer 110 need to be hermetically connected by the sealant 120, so as to improve the service life of the device.
In some embodiments, the support structure 70 on the color filter substrate may also be directly connected to the backplane substrate 80, for example, the support structure 70 may be disposed between the light emitting units 100 on the backplane substrate 80, and the sealant 120 is hermetically connected between the edge of the second planarization layer 60 and the edge of the backplane substrate 80.
To sum up, the utility model provides a various membrane base plate and display device, wherein, various membrane base plate includes the base plate, sets up the first planarization layer on the base plate, sets up on the base plate and is located the barricade structure between base plate and the first planarization layer, is provided with a plurality of shading units and a plurality of light conversion unit on the first planarization layer, and a plurality of light conversion unit set up between the shading unit, and the orthographic projection of shading unit on the base plate overlaps with the orthographic projection of barricade structure on the base plate. The utility model discloses a various membrane base plate is owing to be provided with the shading unit between the light conversion unit, and is provided with the barricade structure in the first planarization layer that the shading unit corresponds, and the barricade structure can block the light that different light conversion units sent, alleviates the crosstalk between the different color lights, improves the color mixing, has improved the quality of product.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A color film substrate is characterized by comprising:
a substrate;
a first planarization layer disposed over the substrate;
the retaining wall structure is arranged above the substrate and is arranged between the substrate and the first planarization layer;
a plurality of light-shielding units and a plurality of light-converting units disposed over the first planarization layer, each of the light-converting units being disposed between the light-shielding units;
wherein, the orthographic projection of the shading unit on the substrate is overlapped with the orthographic projection of the retaining wall structure on the substrate.
2. The color filter substrate according to claim 1, further comprising: a second planarization layer disposed over the plurality of light-shielding units and the plurality of light-converting units.
3. The color filter substrate according to any one of claims 1 or 2, wherein the width of the orthographic projection of the retaining wall structure on the substrate is greater than or equal to the width of the orthographic projection of the light shielding unit on the substrate.
4. The color filter substrate of claim 1, wherein the cross-sectional shape of the retaining wall structure comprises a trapezoid.
5. The color film substrate according to claim 1, wherein the height of the retaining wall structure is 5 μm to 20 μm.
6. The color filter substrate according to claim 1, wherein the optical conversion unit is a quantum dot layer or a quantum well layer.
7. The color filter substrate according to claim 1, wherein a shape formed by the plurality of light shielding units comprises a mesh shape.
8. The color filter substrate according to claim 2, wherein a plurality of support structures are disposed on the second planarization layer.
9. A display device, comprising: a color filter substrate according to any one of claims 1 to 8, and a display backplane;
the display backplane includes: the backlight module comprises a backboard substrate, a driving array arranged on the backboard substrate, and a light-emitting unit connected with the driving array.
10. The display device according to claim 9, wherein a third planarizing layer is provided over the light-emitting unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020583863.7U CN211857132U (en) | 2020-04-17 | 2020-04-17 | Color film substrate and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020583863.7U CN211857132U (en) | 2020-04-17 | 2020-04-17 | Color film substrate and display device |
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| CN211857132U true CN211857132U (en) | 2020-11-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114035380A (en) * | 2021-11-01 | 2022-02-11 | 重庆康佳光电技术研究院有限公司 | Color film substrate, display panel and color film substrate manufacturing method |
| WO2023028933A1 (en) * | 2021-09-02 | 2023-03-09 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| WO2024040591A1 (en) * | 2022-08-26 | 2024-02-29 | 京东方科技集团股份有限公司 | Color film substrate, display panel, and display device |
-
2020
- 2020-04-17 CN CN202020583863.7U patent/CN211857132U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023028933A1 (en) * | 2021-09-02 | 2023-03-09 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
| CN114035380A (en) * | 2021-11-01 | 2022-02-11 | 重庆康佳光电技术研究院有限公司 | Color film substrate, display panel and color film substrate manufacturing method |
| WO2024040591A1 (en) * | 2022-08-26 | 2024-02-29 | 京东方科技集团股份有限公司 | Color film substrate, display panel, and display device |
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