CN214012400U - Display panel and display device - Google Patents
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- CN214012400U CN214012400U CN202023015467.3U CN202023015467U CN214012400U CN 214012400 U CN214012400 U CN 214012400U CN 202023015467 U CN202023015467 U CN 202023015467U CN 214012400 U CN214012400 U CN 214012400U
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- 239000011159 matrix material Substances 0.000 claims description 5
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Abstract
The utility model relates to a display panel and display device, this display panel includes array substrate and color film substrate, and array substrate includes the interval and sets up a plurality of luminescence units on one side of array substrate, forms a spaced area between two adjacent luminescence units; the color film substrate is provided with light conversion structures and light blocking structures arranged among the light conversion structures at intervals on one side close to the array substrate; the light conversion structure is arranged corresponding to the light emitting units, the light blocking structure is arranged corresponding to the spacing area, at least partial overlapping of vertical projection of the light blocking structure on the array substrate and vertical projection of the light emitting units on the array substrate can be reduced, light rays of adjacent light emitting units can be reduced and prevented from crosstalk of light rays of the adjacent light emitting units to adjacent sub-pixels, accordingly, chromaticity purity of the display device is improved, and color gamut is improved.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a display panel and display device.
Background
At present, Micro-LEDs (Micro-Light Emitting diodes) as a new generation display technology have the advantages of high brightness, high color gamut, high contrast, higher viewing angle display, etc., and have become a research focus at present and have a wide application prospect.
The quantum dot material can send the light different with the light source colour when being aroused by the light source, utilizes this principle, develops a quantum dot display technology at present, adopts a large amount of LED chips that only send a colour, through adding multiple quantum dot material in display panel, sends the light that arouses different colours through the luminous excitation quantum dot material of LED chip, and then realizes the colored demonstration.
In the existing quantum dot display technology, light rays emitted by an LED chip easily excite adjacent quantum dots to emit light, so that color crosstalk is caused, further, the chromaticity of the display device is impure, and the color gamut is reduced.
Therefore, how to avoid color crosstalk is an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present application aims to provide a display panel and a display device, aiming to solve the problem of how to avoid color crosstalk.
A display panel, comprising:
the array substrate comprises a plurality of light-emitting units arranged on one side of the array substrate at intervals, and a spacing area is formed between every two adjacent light-emitting units;
the color film substrate is arranged opposite to the array substrate, and one side of the color film substrate, which is close to the array substrate, is provided with light conversion structures at intervals and light blocking structures arranged among the light conversion structures;
the light conversion structure is arranged corresponding to the light emitting unit, the light blocking structure is arranged corresponding to the spacing region, and the vertical projection of the light blocking structure on the array substrate is at least partially overlapped with the vertical projection of the light emitting unit on the array substrate.
Through establishing the structure of being in the light between each light conversion structure to the vertical projection that sets up the structure of being in the light on array substrate overlaps with the vertical projection of luminescence unit on array substrate at least part, thereby make the structure of being in the light can shelter from luminescence unit's light, can reduce luminescence unit's light and penetrate into adjacent light conversion structure, thereby can reduce or even avoid adjacent luminescence unit's light to adjacent subpixel's crosstalk, and then promote display device's colourity purity, promote the colour gamut.
Optionally, the light blocking structure includes a black matrix layer, a first blocking wall layer, and a second blocking wall layer sequentially formed on the color filter substrate, where the second blocking wall layer includes a light blocking surface opposite to the array substrate, the light emitting unit includes a first light emitting surface facing the color filter substrate, an orthographic projection is made on a surface of the array substrate facing the color filter substrate, the light blocking surface is partially overlapped with the first light emitting surface, and a size of the second blocking wall layer gradually decreases from the light blocking surface to the color filter substrate. The light blocking structure is smaller in size and the light conversion structure is larger in size at the position of the color film substrate, so that the light emitting area of the pixel is relatively larger, the area of the light blocking structure is relatively smaller, and the display brightness can be improved.
Optionally, a surface of the light conversion structure facing the light emitting unit is a first light incident surface, a distance between the first light incident surface and the array substrate is a first distance, a distance between the light blocking surface and the array substrate is a second distance, and the first distance is greater than the second distance, so that the first light incident surface is completely surrounded by the light blocking structure, and the possibility of light crosstalk is further reduced.
Optionally, the light conversion structure includes a first light conversion structure, a second light conversion structure, and a third light conversion structure that are sequentially disposed on the color film substrate at intervals and respectively correspond to one light emitting unit, where the light emitting unit is configured to emit light of a first chromaticity, the light emitted by the light emitting unit passes through the first light conversion structure to form light of a second chromaticity, the light emitted by the light emitting unit passes through the second light conversion structure to form light of a third chromaticity, and the light emitted by the light emitting unit passes through the third light conversion structure to form light that maintains the first chromaticity; the light rays of the first chromaticity, the second chromaticity and the third chromaticity are mixed to form white light.
Optionally, the first light conversion structure includes a first color resistance layer, a first quantum dot layer, and a first scattering layer sequentially formed on the color film substrate, where a surface of the first scattering layer facing away from the first quantum dot layer is the first light incident surface, the first color resistance layer is configured to block light of other chromaticities through light of the second chromaticity, the first quantum dot layer is configured to convert the light of the first chromaticity into light of the second chromaticity, and the first scattering layer is configured to enter light and equalize light.
Optionally, the first scattering layer further includes a second light incident surface and a third light incident surface adjacent to the first light incident surface, the second light incident surface and the third light incident surface are arranged opposite to each other and are both used for being connected with the light blocking structure, and the second light incident surface and the third light incident surface both form an inclined included angle with the first light incident surface. After the light blocking structures are filled in the adjacent light conversion structures at intervals, the second light incident surface and the third light incident surface are connected with the light blocking structures, so that no light can enter the second light incident surface and the third light incident surface, the light of the light emitting unit can only enter the first light incident surface with a small area, and the possibility of light crosstalk is reduced.
Optionally, the size of the first scattering layer is gradually reduced from the first quantum dot layer toward the light emitting unit. Although the area of the first light incident surface of the first scattering layer is small, light is uniformly scattered in the first scattering layer and then is emitted to the first quantum dot layer from the surface, opposite to the first light incident surface, with the large area, so that the area size of the sub-pixel can be increased.
Optionally, the second light conversion structure includes a second color resistance layer, a second quantum dot layer, and a second scattering layer sequentially formed on the color film substrate, where a surface of the second scattering layer facing away from the second quantum dot layer is the first light incident surface, the second color resistance layer is configured to block light of other chromaticities through light of the third chromaticity, the second quantum dot layer is configured to convert the light of the first chromaticity into the light of the third chromaticity, the second scattering layer is configured to enter light and equalize light, and the second scattering layer and the first scattering layer have the same structure.
Optionally, the third light conversion structure includes a third color resistance layer, a third scattering layer, and a fourth scattering layer sequentially disposed on the color filter substrate, where a surface of the fourth scattering layer facing away from the third scattering layer is the first light incident surface, the third color resistance layer is configured to block light of other chromaticities through light of the first chromaticity, the third scattering layer is configured to be uniform, the fourth scattering layer is configured to be incident light and uniform, and the fourth scattering layer and the first scattering layer have the same structure.
Based on the same inventive concept, the present application also provides a display device including the display panel of any one of the preceding embodiments.
The display device of the embodiment of the application, through establishing the structure of being in the light between each light conversion structure, and set up the perpendicular projection of the structure of being in the light on array substrate and the perpendicular projection of luminescence unit on array substrate at least part overlap, thereby make the structure of being in the light can shelter from luminescence unit's light, the light that can reduce luminescence unit jets into adjacent light conversion structure, thereby can reduce and even avoid adjacent luminescence unit's light to adjacent subpixel's crosstalk, and then promote display device's colour purity, promote the colour gamut.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment.
Description of reference numerals:
10-array substrate, 11-mounting surface;
20-a color film substrate;
30-sealing a glue frame;
40-light emitting unit, 41-first light emitting face, 42-second light emitting face, 43-third light emitting face, 44-fourth light emitting face, 45-epitaxy, 46-first electrode, 47-second electrode;
51-a first color resistance layer, 52-a second color resistance layer, 53-a third color resistance layer;
61-a first quantum dot layer, 62-a second quantum dot layer;
71-a first scattering layer, 711-a first entrance face, 712-a second entrance face, 713-a third entrance face, 72-a second scattering layer, 73-a third scattering layer, 74-a fourth scattering layer;
80-black matrix layer;
91-a first wall layer, 92-a second wall layer, and 93-a light blocking surface;
a-a display region, a 1-a first sub-pixel region, a 2-a second sub-pixel region, A3-a third sub-pixel region;
b1-first shading area, B2-second shading area;
c-non-display area.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In the existing quantum dot display technology, light rays emitted by an LED chip easily excite adjacent quantum dots to emit light, so that color crosstalk is caused, further, the chromaticity of the display device is impure, and the color gamut is reduced.
Therefore, how to avoid color crosstalk is an urgent problem to be solved.
Based on this, the present application intends to provide a solution to the above technical problem, the details of which will be explained in the following embodiments.
Referring to fig. 1, an embodiment of the present disclosure provides a display panel, which includes an array substrate 10, a color filter substrate 20 and a sealant frame 30, wherein the array substrate 10 and the color filter substrate 20 are disposed opposite to each other, and the sealant frame 30 is connected to edges of the color filter substrate 20 and the color filter substrate 20, so as to encapsulate the array substrate 10, the color filter substrate 20 and structures therebetween into a box. The array substrate 10 and the color film substrate 20 are provided with corresponding circuit structures for driving the display panel to display, and the circuit structures herein may refer to the prior art and are not described herein again.
The display panel comprises a display area A and a non-display area C, wherein the non-display area C is arranged on the periphery of the display area A, the display area A is used for setting a pixel structure, and the non-display area C is used for setting additional structures such as a glue sealing frame 30 and a connecting line.
The display area a is provided with a plurality of pixels, each including three sub-pixels and a light blocking structure disposed between the sub-pixels. As shown in fig. 1, a structure of one pixel, in which the pixel includes a first sub-pixel region a1, a second sub-pixel region a2, and a third sub-pixel region A3, and a first light-shielding region B1 and a second light-shielding region B2 disposed between three sub-pixels.
Each sub-pixel region is provided with a light emitting unit 40 on the array substrate 10, the light emitting unit 40 is, for example, an LED chip, and includes an epitaxy 45 and a first electrode 46 and a second electrode 47 connected to the epitaxy 45, and the first electrode 46 and the second electrode 47 are connected to a circuit on the array substrate 10.
The plurality of light emitting units 40 are disposed in one-to-one correspondence with the plurality of sub-pixel regions corresponding to the arrangement of the plurality of sub-pixels, and a spacing region is formed between any two adjacent light emitting units 40.
The light emitting unit 40 is configured to emit light of a first chromaticity, which may be red, green and blue, preferably, the first chromaticity is blue.
Each sub-pixel area is provided with a light conversion structure, that is, the first sub-pixel area a1 is provided with a first light conversion structure, the second sub-pixel area a2 is provided with a second light conversion structure, and the third sub-pixel area A3 is provided with a third light conversion structure. The first light conversion structure, the second light conversion structure, and the third light conversion structure are sequentially disposed on the color filter substrate 20 at intervals, and are opposite to the light emitting units 40 one by one.
The light emitted by the light emitting unit 40 passes through the first light conversion structure to form light of a second chromaticity, the light emitted by the light emitting unit 40 passes through the second light conversion structure to form light of a third chromaticity, and the light emitted by the light emitting unit 40 passes through the third light conversion structure to form light of a first chromaticity; the light rays of the first chromaticity, the second chromaticity and the third chromaticity are mixed to form white light. If the first chromaticity is blue, the second chromaticity is red, and the third chromaticity is green; if the first chromaticity is red, the second chromaticity is green, and the third chromaticity is blue; if the first chromaticity is green, the second chromaticity is red, and the third chromaticity is blue.
Referring to fig. 1, the light emitting unit 40 further includes a second light emitting surface 42 and a third light emitting surface 43 adjacent to the first light emitting surface 41, and the second light emitting surface 42 and the third light emitting surface 43 are disposed opposite to each other. In some embodiments, the second light emitting face 42 and the third light emitting face 43 may be parallel to each other and perpendicular to the first light emitting face 41. In other embodiments, the second light emitting surface 42 and the third light emitting surface 43 form an inclined included angle with the first light emitting surface 41, and the size of the light emitting unit 40 decreases from the array substrate 10 toward the color filter substrate 20. In other embodiments, the specific shapes of the first light emitting surface 41, the second light emitting surface 42 and the third light emitting surface 43 are not limited.
In this embodiment, the light emitting unit 40 further includes a fourth light emitting surface 44 opposite to the first light emitting surface 41, the fourth light emitting surface 44 emits light toward the array substrate 10, and two ends of the second light emitting surface 42 and the third light emitting surface 43 are respectively connected to the first light emitting surface 41 and the fourth light emitting surface 44. The light emitting unit 40 emits light by a lambertian body, and the first light emitting surface 41 to the fourth light emitting surface 44 can emit light outwards to form a four-sided light emitting structure. This structure enables the luminous efficiency of the display panel to be higher.
In an embodiment that the second light emitting surface 42 and the third light emitting surface 43 form an inclined included angle with the first light emitting surface 41, and the size of the light emitting unit 40 in the direction from the array substrate 10 to the color filter substrate 20 is gradually reduced, the overall light emitting direction of the light emitting unit 40 can be directed to one side of the color filter substrate 20. The second light emitting surface 42 and the third light emitting surface 43 may be symmetrical with respect to a perpendicular line to a midpoint of the first light emitting surface 41, such that the epitaxy 45 of the light emitting unit 40 forms an isosceles trapezoid structure. The inclined angles of the second light emitting surface 42 and the third light emitting surface 43 relative to the first light emitting surface 41 are not particularly limited, and may be set according to actual conditions.
The array substrate 10 may further have a reflective structure, and light emitted from the fourth light emitting surface 44 and light reflected from other positions to the array substrate 10 can be emitted from one side of the color film substrate 20 by reflection of the reflective structure, so that the light efficiency can be improved.
Each light shielding region is provided with a light shielding structure, a plurality of light shielding structures of the plurality of light shielding regions are arranged on the color film substrate 20 and are arranged among the first light conversion structure, the second light conversion structure and the third light conversion structure, and the light shielding structures correspond to the interval regions among the light emitting units 40.
The light emitting unit 40 includes a first light emitting surface 41 facing the color filter substrate 20, surfaces of the first light conversion structure, the second light conversion structure, and the third light conversion structure facing the array substrate 10 are first light incident surfaces 711, a surface of the array substrate 10 opposite to the color filter substrate 20 is an installation surface 11, a projection is made to the installation surface 11, and a vertical projection of the light blocking structure on the installation surface 11 is at least partially overlapped with a vertical projection of the light emitting unit 40 on the installation surface 11.
The light blocking structure is arranged between the adjacent light conversion structures, and the light blocking structure fills the space between the adjacent light conversion structures, namely the light conversion structures and the light blocking structure are in seamless connection.
The display panel of the embodiment of the application, through establishing the structure of being in the light between each light conversion structure, and set up the vertical projection of the structure of being in the light on array substrate 10 and the vertical projection of luminescence unit 40 on array substrate 10 at least part overlap, thereby make the structure of being in the light can shelter from luminescence unit 40's light, the light that can reduce luminescence unit 40 jets into adjacent light conversion structure, thereby can reduce and even avoid adjacent luminescence unit 40's light to adjacent subpixel's crosstalk, and then promote display device's colourity purity, promote the colour gamut.
Each light conversion structure includes an opening (i.e., the first light incident surface 711) facing the light emitting unit 40, and since the vertical projection of the light blocking structure on the mounting surface 11 is at least partially overlapped with the vertical projection of the light emitting unit 40 on the mounting surface 11, the area of the opening is smaller than the area of the first light emitting surface 41, that is, the light incident surface area of each light conversion structure is reduced, so that the incident amount of light rays of the adjacent light emitting units 40 can be reduced while the display of each sub-pixel is not affected, and the possibility of light ray crosstalk is reduced.
In an embodiment, referring to fig. 1, the light blocking structure includes a black matrix layer 80, a first barrier layer 91(bank1), and a second barrier layer 92(bank2) sequentially formed on the color filter substrate 20. The black matrix layer 80 is made of black photoresist, and the first and second barrier layers 91 and 92 are made of high-emission high-Optical Density (OD) photoresist.
The second barrier layer 92 includes a light blocking surface 93 opposite to the array substrate 10, and makes an orthographic projection to the mounting surface 11, the light blocking surface 93 partially overlaps the first light emitting surface 41, and the light blocking curtain 93 completely covers the second light emitting surface 42 and the third light emitting surface 43 opposite to the adjacent light emitting unit 40. In other words, the area of the light blocking surface 93 is larger than the area of the interval region between two adjacent light emitting units 40, for the same light emitting unit 40, the light emitted by the second light emitting surface 42 and the third light emitting surface 43 does not directly enter the first light incident surface 711 of the corresponding light conversion structure, and since the area of the light blocking surface 93 is large enough, the light emitted by the second light emitting surface 42 and the third light emitting surface 43 is also blocked by the light blocking surface 93 when being emitted toward the adjacent light conversion structure. As shown in fig. 1, of the 2 light rays emitted from the second light emitting surface 42 to the adjacent first light conversion structures, the extension lines of the 2 light rays respectively correspond to the two ends of the first quantum dot layer 61, the included angles between the 2 light rays and the first light emitting surface 41 are respectively α and β, and as can be seen from fig. 1, the 2 light rays are all blocked by the light blocking surface 93 due to the larger area of the light blocking surface 93. Therefore, the light blocking structure can block the light emitting unit 40 from emitting light to the adjacent light conversion structure, so as to avoid crosstalk of light.
Optionally, the size of the second barrier layer 92 decreases gradually from the light blocking surface 93 to the color filter substrate 20. With such an arrangement, at the position of the color film substrate 20, the light blocking structure has a smaller size, and the light conversion structure has a larger size, so that the light emitting area of the pixel is relatively larger, and the light blocking structure has a relatively smaller area, thereby improving the display brightness.
Optionally, the light blocking surface 93 protrudes from the first light incident surface 711. In other words, the distance between the first light incident surface 711 and the array substrate 10 is the first distance, the distance between the light blocking surface 93 and the array substrate 10 is the second distance, and the first distance is greater than the second distance. That is, the light blocking surface 93 is closer to the array substrate 10 than the first light incident surface 711, so that the opening of the light conversion structure between the two light blocking structures, that is, the first light incident surface 711 is completely surrounded by the light blocking structure, and the possibility of light crosstalk is further reduced. Alternatively, the light blocking surface 93 may be flush with and coplanar with the first light incident surface 711.
In one embodiment, referring to fig. 1, the first light conversion structure includes a first color resist layer 51, a first quantum dot layer 61 and a first scattering layer 71 sequentially formed on a color filter substrate 20. The first light incident surface 711 is disposed on the first light scattering layer 71, the first color barrier layer 51 is used for blocking light of other chromaticities by light of a second chromaticity, the first quantum dot layer 61 is used for converting the light of the first chromaticity into the light of the second chromaticity, and the first light scattering layer 71 is used for incident light and equalizing light.
Taking the first chromaticity as blue and the second chromaticity as red as an example, the first color resist layer 51 is a red color resist, the first quantum dot layer 61 is a red quantum dot layer, blue light emitted by the light emitting unit 40 enters the first scattering layer 71 through the first light incident surface 711 of the first scattering layer 71 and is uniformly scattered in the first scattering layer 71, so that uniform blue light is emitted to the first quantum dot layer 61, the red quantum dot material of the first quantum dot layer 61 is excited by the blue light to emit red light, the red color resist of the first color resist layer 51 can allow the excited red light to pass through and be emitted from the color filter substrate 20, and the un-excited blue light and other parasitic light are blocked by the red color resist and cannot be emitted from the color filter substrate 20. And other combinations of the first chromaticity and the second chromaticity can be obtained by analogy, and the description is omitted. It can be seen that the arrangement of the first color resist layer 51, the first quantum dot layer 61, and the first scattering layer 71 can make the light of the second chromaticity emitted from the sub-pixel uniform and pure, without stray light interference, and with high color gamut.
The first color resist layer 51 may be made of photoresist; the first quantum dot layer 61 may be a photoresist doped with a quantum dot material; the first scattering layer 71(Scatter) may be a photoresist doped with scattering particles, such as titanium dioxide (TiO 2).
In one embodiment, referring to fig. 1, the first scattering layer 71 further includes a second light incident surface 712 and a third light incident surface 713 adjacent to the first light incident surface 711. The second light incident surface 712 and the third light incident surface 713 are disposed opposite to each other and are both used for being connected to the light blocking structure, and the second light incident surface 712 and the third light incident surface 713 form an inclined included angle with the first light incident surface 711.
In this embodiment, one end of the second light incident surface 712 and the third light incident surface 713 is connected to the first quantum dot layer 61, the other end is connected to the first light incident surface 711, and the second light incident surface 712 and the third light incident surface 713 are opposite to the adjacent light conversion structures. After the light blocking structures are filled in the adjacent light conversion structures at intervals, the second light incident surface 712 and the third light incident surface 713 are connected with the light blocking structures, so that no light is incident on the second light incident surface 712 and the third light incident surface 713, and the light of the light emitting unit 40 can only be incident from the first light incident surface 711 with a smaller area, thereby reducing the possibility of light crosstalk.
In addition, the second light incident surface 712 and the third light incident surface 713 are arranged to form an inclined angle with the first light incident surface 711, so that the structure of the first scattering layer 71 does not affect the area size of the sub-pixel region. Optionally, the first light incident surface 711, the second light incident surface 712, and the third light incident surface 713 are all planes, and the second light incident surface 712 and the third light incident surface 713 are symmetrical with respect to a perpendicular line of a midpoint of the first light incident surface 711. In other words, the first scattering layer 71 forms an isosceles trapezoid structure, so that the incident light conditions of the sub-pixels are almost the same for the display panel including a large number of sub-pixels, and the display uniformity of the display panel can be improved. The inclined angles between the second light incident surface 712 and the first light incident surface 711 and the inclined angles between the third light incident surface 713 and the first light incident surface 711 are not particularly limited, and may be set according to actual situations.
In other embodiments, the second light incident surface 712 and the third light incident surface 713 may be asymmetric with respect to a perpendicular line to a midpoint of the first light incident surface 711, so as to form a non-isosceles trapezoid.
Further, the size of the first scattering layer 71 is gradually reduced from the first quantum dot layer 61 toward the light emitting unit 40. In other words, the first scattering layer 71 forms an inverted trapezoid structure with respect to the light emitting unit 40, so that although the area of the first light incident surface 711 of the first scattering layer 71 is small, the light is uniformly scattered in the first scattering layer 71 and then exits from the surface opposite to the first light incident surface 711 with a large area to the first quantum dot layer 61, thereby increasing the area size of the sub-pixels.
In one embodiment, referring to fig. 1, the second light conversion structure includes a second color resist layer 52, a second quantum dot layer 62 and a second scattering layer 72 sequentially formed on a color filter substrate 20, and the first light incident surface 711 is disposed on the second scattering layer 72. The second color resistance layer 52 is used for passing light of a third chromaticity and blocking light of other chromaticities, the second quantum dot layer 62 is used for converting light of the first chromaticity into light of the third chromaticity, the second scattering layer 72 is used for light entrance and light equalization, and the second scattering layer 72 and the first scattering layer 71 are identical in structure.
Taking the first chromaticity as blue and the third chromaticity as green as an example, the second color resistance layer 52 is a green color resistance, the second quantum dot layer 62 is a red quantum dot layer, blue light emitted by the light emitting unit 40 enters the second scattering layer 72 through the first light incident surface 711 of the second scattering layer 72 and is uniformly scattered in the second scattering layer 72, so that uniform blue light is emitted to the second quantum dot layer 62, the green quantum dot material of the second quantum dot layer 62 is excited by the blue light to emit green light, the green color resistance of the second color resistance layer 52 allows the excited green light to pass through and be emitted from the color filter substrate 20, and the unexcited blue light and other parasitic light are blocked by the green color resistance and cannot be emitted from the color filter substrate 20. And other combinations of the first chromaticity and the third chromaticity can be analogized, and the description is omitted. It can be seen that the second color resist layer 52, the second quantum dot layer 62, and the second scattering layer 72 are provided, so that the light of the third chromaticity emitted from the sub-pixel is uniform and pure, and has no stray light interference and a high color gamut.
The second photoresist layer 52 may be made of photoresist; the second quantum dot layer 62 may be a photoresist doped with quantum dot material; the second scattering layer 72 may be a photoresist doped with scattering particles, such as titanium dioxide.
In an embodiment, referring to fig. 1, the third light conversion structure includes a third color resist layer 53, a third scattering layer 73 and a fourth scattering layer 74 sequentially disposed on the color film substrate 20, and the first light incident surface 711 is disposed on the fourth scattering layer 74. The third color-resisting layer 53 is used for passing light of the first chromaticity and blocking light of other chromaticities, the third scattering layer 73 is used for light equalization, the fourth scattering layer 74 is used for light entrance and light equalization, and the fourth scattering layer 74 and the first scattering layer 71 are identical in structure.
In this embodiment, the third light conversion structure does not perform color conversion, but only performs light equalization and stray light filtering. The two light-equalizing structures of the third scattering layer 73 and the fourth scattering layer 74 are arranged, so that on one hand, the light-equalizing effect of the light rays with the first chromaticity in the third scattering layer 73 and the fourth scattering layer 74 is better, and meanwhile, the thicker scattering layer can weaken the reflection of ambient stray light.
Taking the first chromaticity as blue as an example, the third color-resisting layer 53 is a blue color-resisting layer, and the material thereof may be photoresist, and the third scattering layer 73 and the fourth scattering layer 74 may be photoresist doped with scattering particles, such as titanium dioxide.
In this embodiment, the Light Emitting unit 40 may be a Micro Light Emitting diode (Micro LED for short), or a Mini-LED, and the size of the Light Emitting unit is not limited.
The embodiment of the application also provides a display device which comprises the display panel. The display device of the embodiment can be a display, a smart phone, a television, a wearable device, a VR/AR device, and the like.
The display device of the embodiment of the application, through the structure of being in the light between each light conversion structure, and set up the vertical projection of the structure of being in the light on array substrate 10 and the vertical projection of luminescence unit 40 on array substrate 10 at least part overlap, thereby make the structure of being in the light can shelter from adjacent luminescence unit 40's light, and the area of first income plain noodles 711 is little, can reduce adjacent luminescence unit 40's light and kick into, thereby can reduce and even avoid adjacent luminescence unit 40's light to adjacent subpixel's crosstalk, and then promote display device's colourity purity, promote the colour gamut.
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 display panel, comprising:
the array substrate comprises a plurality of light-emitting units arranged on one side of the array substrate at intervals, and a spacing area is formed between every two adjacent light-emitting units;
the color film substrate is arranged opposite to the array substrate, and one side of the color film substrate, which is close to the array substrate, is provided with light conversion structures at intervals and light blocking structures arranged among the light conversion structures;
the light conversion structure is arranged corresponding to the light emitting unit, the light blocking structure is arranged corresponding to the spacing region, and the vertical projection of the light blocking structure on the array substrate is at least partially overlapped with the vertical projection of the light emitting unit on the array substrate.
2. The display panel according to claim 1, wherein the light blocking structure includes a black matrix layer, a first light blocking wall layer, and a second light blocking wall layer formed in this order on the color filter substrate, the second light blocking wall layer includes a light blocking surface opposite to the array substrate, the light emitting unit includes a first light emitting surface facing the color filter substrate, a surface facing the color filter substrate of the array substrate is orthographically projected, the light blocking surface partially overlaps with the first light emitting surface, and a dimension of the second light blocking wall layer gradually decreases from the light blocking surface toward the color filter substrate.
3. The display panel of claim 2, wherein a surface of the light conversion structure facing the light emitting unit is a first light incident surface, a distance between the first light incident surface and the array substrate is a first distance, a distance between the light blocking surface and the array substrate is a second distance, and the first distance is greater than the second distance.
4. The display panel according to claim 3, wherein the light conversion structures include a first light conversion structure, a second light conversion structure, and a third light conversion structure that are sequentially disposed at intervals on the color film substrate and respectively correspond to one of the light emitting units, the light emitting unit is configured to emit light of a first chromaticity, the light emitted by the light emitting unit passes through the first light conversion structure to form light of a second chromaticity, the light emitted by the light emitting unit passes through the second light conversion structure to form light of a third chromaticity, and the light emitted by the light emitting unit passes through the third light conversion structure to form light that maintains the first chromaticity; the light rays of the first chromaticity, the second chromaticity and the third chromaticity are mixed to form white light.
5. The display panel of claim 4, wherein the first light conversion structure includes a first color resist layer, a first quantum dot layer, and a first scattering layer sequentially formed on the color film substrate, a surface of the first scattering layer facing away from the first quantum dot layer is the first light incident surface, the first color resist layer is configured to pass through light of the second chromaticity and block light of other chromaticities, the first quantum dot layer is configured to convert light of the first chromaticity into light of the second chromaticity, and the first scattering layer is configured to enter light and equalize light.
6. The display panel of claim 5, wherein the first scattering layer further includes a second light incident surface and a third light incident surface adjacent to the first light incident surface, the second light incident surface and the third light incident surface are opposite to each other and are both used for being connected to the light blocking structure, and the second light incident surface and the third light incident surface both form an inclined included angle with the first light incident surface.
7. The display panel according to claim 6, wherein the first scattering layer is gradually reduced in size in a direction from the first quantum dot layer toward the light emitting unit.
8. The display panel according to claim 5, wherein the second light conversion structure includes a second color resist layer, a second quantum dot layer, and a second scattering layer sequentially formed on the color film substrate, a surface of the second scattering layer facing away from the second quantum dot layer is the first light incident surface, the second color resist layer is configured to pass through light of the third chromaticity and block light of other chromaticities, the second quantum dot layer is configured to convert light of the first chromaticity into light of the third chromaticity, the second scattering layer is configured to enter light and equalize light, and the second scattering layer and the first scattering layer have the same structure.
9. The display panel according to claim 6, wherein the third light conversion structure includes a third color resist layer, a third scattering layer, and a fourth scattering layer sequentially disposed on the color film substrate, a surface of the fourth scattering layer facing away from the third scattering layer is the first light incident surface, the third color resist layer is configured to pass through light of the first chromaticity and block light of other chromaticities, the third scattering layer is configured to be uniform, the fourth scattering layer is configured to enter light and be uniform, and the fourth scattering layer and the first scattering layer have the same structure.
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 |
|---|---|---|---|
| CN202023015467.3U CN214012400U (en) | 2020-12-15 | 2020-12-15 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023015467.3U CN214012400U (en) | 2020-12-15 | 2020-12-15 | Display panel and display device |
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Cited By (1)
| 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 |
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Cited By (1)
| 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 |
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Address after: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee after: Chongqing Kangjia Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 402760 No.69, Wushan Road, Biquan street, Bishan District, Chongqing Patentee before: Chongqing Kangjia Photoelectric Technology Research Institute Co.,Ltd. Country or region before: China |