TWI673541B - Display panel and color array substrate - Google Patents

Abstract

A color array substrate includes a substrate, a mesh matrix, and a plurality of first photoluminescent objects. The mesh matrix is formed on the surface of the substrate and has a plurality of first pixel grids, a plurality of second pixel grids, and a plurality of third pixel grids. Each of the first pixel grid, the second pixel grid, and the third pixel grid is formed by at least a first sidewall and a second sidewall. The first side wall extends from the surface of the substrate and forms a first angle with the surface. The second side wall is connected to the first side wall to form a second included angle and a concave structure. The first included angle is greater than 90 degrees and less than 180 degrees. The second included angle is less than 180 degrees. The first photoluminescent objects are respectively disposed in the first pixel grids and substantially located in the concave structures of the first pixel grids.

Description

Display panel and color array substrate

The present invention relates to a display panel and a substrate, and more particularly to a display panel and a color array substrate having a mesh matrix for light shielding.

Today's display technology has developed quantum dot displays. The quantum dot display has a wider color gamut than a general display (such as a conventional liquid crystal display), so the quantum dot display can provide a bright image with better color saturation. At present, there is a quantum dot display, which includes quantum dot filter layers (Quantum Dot Color Filters, QDCF), wherein the quantum dot filter layer has a plurality of photoluminescence quantum dots (PLQD). These photoluminescence quantum dots can be excited to produce different colors of light, so that the quantum dot display can display an image.

At least one embodiment of the present invention provides a color array substrate, which can help improve color saturation.

The color array substrate provided by at least one embodiment of the present invention includes a substrate, a mesh matrix, and a plurality of first photoluminescence materials. The substrate has a surface, and the mesh matrix is formed on the surface of the substrate, and has a plurality of first pixel lattices, a plurality of second pixel lattices, and a plurality of third pixel lattices, wherein Each of the first pixel grid, the second pixel grid, and the third pixel grid is formed by at least a first sidewall and a second sidewall. The first side wall extends from the surface and forms a first angle with the surface, and the second side wall is connected with the first side wall to form a second angle and a concave structure. The first included angle is greater than 90 degrees and less than 180 degrees, and the second included angle is less than 180 degrees. The first photoluminescent objects are respectively disposed in the first pixel grids and substantially located in the concave structures of the first pixel grids.

In at least one embodiment of the present invention, each of the first pixel grid, the second pixel grid, and the third pixel grid is further composed of at least a first sidewall, a second sidewall, and a third sidewall. As defined. Each second side wall is connected between the first side wall and the third side wall, and the second side wall and the third side wall form a third included angle, wherein the third included angle is less than 180 degrees.

In at least one embodiment of the present invention, each of the first pixel grid, the second pixel grid, and the third pixel grid has a maximum width at the third side wall corresponding to about 70 microns to 120. Microns.

In at least one embodiment of the present invention, the mesh matrix further has an upper surface. Each third side wall is respectively connected between the upper surface and the corresponding second side wall, and each third side wall is connected to the upper surface to form a fourth included angle, wherein the fourth included angle is greater than 90 degrees and less than 180 degrees.

In at least one embodiment of the present invention, the color array substrate further includes a plurality of light reflecting layers. The reflective layers cover the first and second sidewalls, but do not cover the third sidewalls.

In at least one embodiment of the present invention, each first photoluminescent substance substantially covers a corresponding light reflecting layer.

In at least one embodiment of the present invention, each first photoluminescent object includes a first filling material and a plurality of first quantum dots. The first filling material is substantially filled in the corresponding first pixel grid and the concave structure. These first quantum dots are mixed in the first filling material, and are substantially filled in the corresponding first pixel grid and the concave structure.

In at least one embodiment of the present invention, the color array substrate further includes a plurality of second photoluminescent objects. The second photoluminescent objects are respectively disposed in the second pixel grids and are substantially located in the concave structures of the second pixel grids. Each of the first photoluminescent objects is used to excite red light. Each second photoluminescent substance is used for exciting green light.

In at least one embodiment of the present invention, the thickness of each first photoluminescent substance is smaller than the thickness of each second photoluminescent substance, and each second photoluminescent substance includes a second filling material and a plurality of second quantum dots. The second filling material is substantially filled in the corresponding second pixel grid and the concave structure. These second quantum dots are mixed in a filling material, and are substantially filled in corresponding second pixel grids and concave structures. The materials of these second quantum dots are selected from perovskite, cadmium sulfide, cadmium selenide, A group of cadmium telluride and indium phosphide.

In at least one embodiment of the present invention, the thickness of each first photoluminescent object and the thickness of each second photoluminescent object are smaller than the maximum thickness of the mesh matrix.

In at least one embodiment of the present invention, each first photoluminescent substance has a first surface that is not in contact with the substrate, and each second photoluminescent substance has a second surface that is not in contact with the substrate. Each first surface and each second surface respectively extend from a corresponding second side wall, and the mesh matrix protrudes from each first surface and each second surface.

A display panel provided by at least one embodiment of the present invention includes the above-mentioned color array substrate and a counter substrate, wherein the opposite substrate is disposed relative to the color array substrate.

In at least one embodiment of the present invention, the opposite substrate includes at least one light generation structure. The light generating structure is disposed with respect to the first photoluminescent substances and the second photoluminescent substances.

In at least one embodiment of the present invention, the display panel further includes a liquid crystal layer, and the opposite substrate is a component array substrate, wherein the liquid crystal layer is disposed between the opposite substrate and the color array substrate.

Based on the above, the mesh matrix used in the color array substrate of at least one embodiment of the present invention can block part of the light from the light generating structure to help reduce the adverse effects caused by light leakage, thereby helping To increase the color saturation of the display panel.

In order to make the features and advantages of the present invention more comprehensible, the embodiments are described below in detail with reference to the accompanying drawings.

FIG. 1A is a schematic top view of a color array substrate according to at least one embodiment of the present invention. Referring to FIG. 1A, the color array substrate 100 includes a mesh matrix 110, a plurality of first photoluminescent objects 121, a plurality of second photoluminescent objects 122, and a plurality of filter objects 123. The mesh matrix 110 has a plurality of first pixel grids 111, a plurality of second pixel grids 112, and a plurality of third pixel grids 113, where the first photoluminescence objects 121 are respectively disposed on the first In the pixel grid 111, the second photoluminescent objects 122 are respectively disposed in the second pixel grid 112, and the filters 123 are respectively disposed in the third pixel grid 113. In this embodiment, the plurality of first pixel grids 111, the plurality of second pixel grids 112, and the plurality of third pixel grids 113 are arranged in an alignment manner, for example, but the present invention does not use This is limited. In other embodiments, for example, the plurality of first pixel grids 111, the plurality of second pixel grids 112, and the plurality of third pixel grids 113 can be arranged in an array in an offset arrangement.

FIG. 1B is a schematic cross-sectional view taken along line 1B-1B in FIG. 1A. Referring to FIGS. 1A and 1B, the color array substrate 100 further includes a substrate 130 having a surface 131. The substrate 130 is a transparent plate, which is, for example, a glass plate, an acrylic plate, or a sapphire substrate. A mesh matrix 110 is formed on the surface 131, where the mesh matrix 110, the first photoluminescent objects 121, the second photoluminescent objects 122, and the filter objects 123 are all formed on the same side of the substrate 130 . The thickness T1 of each of the first photoluminescent objects 121, the thickness T2 of each of the second photoluminescent objects 122, and the thickness T3 of each of the filters 123 are all smaller than the maximum thickness T4 of the mesh matrix 110.

Each first photoluminescent substance 121 has a first surface 121s that is not in contact with the substrate 130, each second photoluminescent substance 122 has a second surface 122s that is not in contact with the substrate 130, and each filter 123 has a non-contacting substrate 130. Third surface 123s. Taking FIG. 1B as an example, the first surface 121s, the second surface 122s, and the third surface 123s are the bottom surfaces of the first photoluminescence substance 121, the second photoluminescence substance 122, and the filter substance 123, respectively. The matrix 110 protrudes from each first surface 121s, each second surface 122s, and each third surface 123s.

Both the first photoluminescence substance 121 and the second photoluminescence substance 122 have fluorescence characteristics. When the light generating structure (not shown in FIGS. 1A and 1B) of the display (not shown in FIGS. 1A and 1B) emits light, the light L10 emitted by the light generating structure is incident on these first photoluminescent objects 121 and the second The photoluminescent substance 122 is used for exciting the first photoluminescent substance 121 and the second photoluminescent substance 122. The first photoluminescent object 121 and the second photoluminescent object 122 generate colored light R12 and colored light G12 after being excited by the light L10, respectively. In this embodiment, the light L10 may be blue light, the color light R12 may be red light, and the color light G12 may be green light.

The first photoluminescent object 121 includes a plurality of first quantum dots 121b, and the second photoluminescent object 122 includes a plurality of second quantum dots 122b. The first quantum dot 121b and the second quantum dot 122b have fluorescent characteristics and can be excited by the light L10 to generate colored light R12 and colored light G12, respectively. The material of the first quantum dot 121b and the material of the second quantum dot 122b may be selected from In the group consisting of perovskite, cadmium sulfide, cadmium selenide, cadmium telluride and indium phosphide. When the material of the first quantum dot 121b and the material of the second quantum dot 122b are cadmium sulfide, cadmium selenide or cadmium telluride, indium phosphide, or any combination of these materials, the size of the first quantum dot 121b and the second quantum dot may be changed. The size of 122b is used to obtain a predetermined energy gap, so that the first quantum dot 121b and the second quantum dot 122b can emit light with a predetermined wavelength after being excited.

When the material of the first quantum dot 121b and the material of the second quantum dot 122b are perovskite, the first quantum dot 121b and the second quantum dot 122b may have bonded halogen ions, that is, the above-mentioned perovskite The chemical formula is CsPbX ₃ , where X represents halogen. The energy gap between the first quantum dot 121b and the second quantum dot 122b can be determined by different types of halogen ions, so that the excited first quantum dot 121b and the second quantum dot 122b can emit light with a predetermined wavelength. For example, perovskite with chloride ion (CsPbCl ₃ ) can emit blue light when excited, perovskite with bromide ion (CsPbBr ₃ ) can emit green light when excited, and perovskite with iodine ion Mine (CsPbI ₃ ) can emit red light after being excited.

In this embodiment, the material of the filter 123 is an organic transparent color resist or an inorganic transparent material. When the light generating structure emits light L10, the filter 123 can allow the light L10 to pass through to generate colored light B12, colored light B12. The colors and characteristics are substantially the same or similar to those of the light L10. The light L10 and the color light B12 are both blue light, but the invention is not limited thereto. In other embodiments, the filter 123 can significantly filter light. When the above-mentioned light generating structure emits light L10, the filter 123 can allow a portion of the light L10 with a specific wavelength range to pass, but block the light outside the specific wavelength range. Other parts, thereby filtering light L10 into colored light B12, both light L10 and colored light B12 can be blue, but the spectrum of colored light B12 can be narrower than the spectrum of light L10, that is, the full width at half The maximum (FWHM) can be smaller than the full width at half maximum of the light L10 spectrum, so that the color of the color light B12 is closer to the blue primary color, which in turn helps to improve the color saturation of the image.

In the embodiment shown in FIG. 1B, the thickness T1 of each of the first photoluminescent objects 121 may be smaller than the thickness T2 of each of the second photoluminescent objects 122, so that the light L10 affects the first photoluminescent objects 121 and the second The transmittances of the photoluminescent objects 122 can be equal to or similar to each other. In detail, when both the first photoluminescent object 121 and the second photoluminescent object 122 have the same thickness, the penetration of the light L10 by both the first photoluminescent object 121 and the second photoluminescent object 122 The transmittances are obviously not equal. The first photoluminescent object 121 has a higher transmittance, and the second photoluminescent object 122 has a lower transmittance.

Continuing the above, in order to make the light transmittance of the first photoluminescent object 121 and the second photoluminescent object 122 equal to or similar to each other, the light L10 passes through the first photoluminescent object 121 and the second photoluminescent object. After the light emitting element 122, the blue light leakage rate (blue leakage) is less than about 1%, thereby improving the color saturation. In addition, in the embodiment shown in FIG. 1B, the thickness T3 of each filter 123 may be smaller than the thickness T2 of each second photoluminescent object 122.

It should be noted that, in this embodiment, the color array substrate 100 includes two types of photoluminescence objects: a first photoluminescence object 121 and a second photoluminescence object 122, and the light L10 is blue light. In the embodiment, the color array substrate 100 may include only one type of photoluminescent material (the first photoluminescent material 121 or the second photoluminescent material 122) or more than three types of photoluminescent materials, and the light L10 may be ultraviolet light. Light (Ultraviolet, UV). For example, the filter 123 shown in FIG. 1A and FIG. 1B may be replaced with a third photoluminescent object, which also includes a plurality of third quantum dots. When the light L10 is ultraviolet light, the third quantum dot illuminated by the light L10 can be excited to emit a color light B12.

In this embodiment, the mesh matrix 110 is opaque, and the color may be black, so it can block light. When the light generating structure of the display emits light L10, the mesh matrix 110 can partially block the light L10 and reduce a part of the light that is not perpendicularly incident on the first photoluminescent object 121, the second photoluminescent object 122, and the filter 123. L10, to reduce the first photoluminescence object 121, the second photoluminescence object 122, and the filter object 123 from receiving unnecessary part of the light L10, thereby helping to reduce the adverse effects of light leakage. In this way, the mesh matrix 110 can reduce unnecessary excitation of the first photoluminescent object 121 and the second photoluminescent object 122 by the light L10, and avoid the first photoluminescent object 121 and the second photoluminescent object. 122 generates unnecessary colored light R12 and G12, thereby improving color saturation.

In addition, because the thickness T1 of the first photoluminescent substance 121, the thickness T2 of the second photoluminescent substance 122, and the thickness T3 of the filter 123 are all smaller than the maximum thickness T4 of the mesh matrix 110, and the mesh matrix 110 is convex Due to the first surface 121s, the second surface 122s, and the third surface 123s, the mesh matrix 110 can more effectively block non-normal incidence on the first photoluminescence 121, the second photoluminescence 122, and the filter The partial light L10 of 123 greatly reduces the unnecessary excitation of the first photoluminescent object 121 and the second photoluminescent object 122 by the light L10, thereby effectively improving the color saturation.

FIG. 1C is an enlarged schematic view of the color array substrate in FIG. 1B at the first pixel grid. Please refer to FIG. 1B and FIG. 1C. The mesh matrix 110 also has a multi-faceted first side wall S1 and a multi-faceted second side wall S2, wherein each of the first surface 121s, each of the second surface 122s and each of the third surface 123s is respectively from the corresponding Two side walls S2 extend. Each of the first pixel grid 111, the second pixel grid 112, and the third pixel grid 113 is formed by at least a first side wall S1 and a second side wall S2. The two side walls S2 are all annular and surround at least a part of each of the first pixel grid 111, the second pixel grid 112, and the third pixel grid 113.

Taking FIG. 1B and FIG. 1C as examples, the mesh matrix 110 further has a multi-sided third sidewall S3, and each of the first pixel grid 111, the second pixel grid 112, and the third pixel grid 113 One is at least defined by the first side wall S1, the second side wall S2, and the third side wall S3. The third side wall S3 is also annular, and the first side wall S1, the second side wall S2, and the third side wall S3 surround the first picture. Each of the pixel grid 111, the second pixel grid 112, and the third pixel grid 113.

The first side wall S1 extends from the surface 131 of the substrate 130 and forms a first angle A1 with the surface 131, and the second side wall S2 is connected with the first side wall S1 to form a second angle A2 and the concave structure R11, wherein the first angle A1 More than 90 degrees and less than 180 degrees, and the second included angle A2 is less than 180 degrees. Each second side wall S2 is connected between the first side wall S1 and the third side wall S3, and the second side wall S2 and the third side wall S3 form a third included angle A3, wherein the third included angle A3 is less than 180 degrees. In addition, the mesh matrix 110 further has an upper surface S4. The shape of the upper surface S4 is a mesh shape, and each third sidewall S3 is connected between the upper surface S4 and the corresponding second sidewall S2, respectively. Each third side wall S3 is connected to the upper surface S4 to form a fourth included angle A4, wherein the fourth included angle A4 is greater than 90 degrees and less than 180 degrees.

It can be known from this that the sidewalls of each of the first pixel grid 111, the second pixel grid 112, and the third pixel grid 113 (including the first to third sidewalls S1 to S3) form a first included angle A1. To the third included angle A3, plus the fourth included angle A4 formed between the third side wall S3 and the upper surface S4 is greater than 90 degrees, so the first pixel grid 111, the second pixel grid 112, and the third pixel The width of each of the grids 113 formed along the normal direction of the substrate 130 is not uniform.

Taking the first pixel grid 111 shown in FIG. 1C as an example, each of the first pixel grids 111 corresponds to a minimum width W10 at the first sidewall S1 of about 60 μm to 110 μm. The maximum width W12 of each pixel grid 111 corresponding to the concave structure R11 is about 70 μm to 120 μm. Each of the first pixel grids 111 corresponds to a minimum width W23 at the second side wall S2 of about 50 to 100 microns, and each of the first pixel grids 111 corresponds to a third side wall S3. The maximum width W30 is about 70 microns to 120 microns. In addition, it should be noted that the structure of the second pixel grid 112 and the structure of the third pixel grid 113 are substantially the same or similar to the structure of the first pixel grid 111, as shown in FIG. 1C. Therefore, each of the second pixel grid 112 and the third pixel grid 113 has the same minimum width W10, W23 and maximum width W12, W30.

A constituent material of the mesh matrix 110 may be a polymer material, which is, for example, a photoresist or a resin. When the constituent material of the mesh matrix 110 is a photoresist, the mesh matrix 110 may be formed through exposure and development. During the development process, different concentrations of developers, at least two different types of developers, or The development time is adjusted to form the first to third sidewalls S1 to S3 and the concave structure R11. For example, the manufacturing method of the mesh matrix 110 may use tetramethylazanium hydroxide (TMAH) at a concentration of 0.1% to 0.4% as a developer, and use the developer to perform photoresist for about 20 seconds to 30-second development.

A part of the first photoluminescent objects 121 is substantially located in the concave structure R11 of the first pixel grid 111, and each of the first photoluminescent objects 121 further includes a first filling material 121a, where the first quantum The dots 121b and the first filling material 121a are substantially filled in the corresponding first pixel grid 111 and the concave structure R11. These first quantum dots 121b are mixed with the first filling material 121a, and the first filling material 121a may be a photoresist or a resin, wherein the aforementioned resin is, for example, a PMMA adhesive or inkjet printing. ) Liquid medium. Therefore, the first photoluminescence object 121 can be formed by photolithigraphy or inkjet printing.

Each of the first photoluminescent objects 121 further includes a plurality of scattering particles 129, and these scattering particles 129 are mixed in the first filler 121a. The color of the scattering particles 129 may be white, and the constituent material of the scattering particles 129 may be titanium dioxide (TiO ₂ ). Each scattering particle 129 can prevent the first quantum dots 121b from agglomerating to affect the fluorescent characteristics of the first photoluminescent object 121, and can scatter light. When the first photoluminescence object 121 receives the light L10, the first quantum dot 121b is excited to emit colored light R12 in all directions. When the colored light R12 is incident on the scattering particles 129, the scattering particles 129 can scatter the colored light R12, so that the colored light R12 is uniformly emitted from the first photoluminescent substance 121.

A part of the second photoluminescent substances 122 is substantially located in the concave structure R11 of the second pixel grids 112, and except for the second quantum dots 122b, the second photoluminescent substances 122 are substantially the same as the first photoluminescent substances 122. The photoluminescence substance 121 is the same. In detail, the second photoluminescent objects 122 may also be formed by lithography or inkjet printing, and each second photoluminescent object 122 further includes a second filling material 122a, wherein these second quantum dots 122b are mixed in the second Filling material 122a, and these second quantum dots 122b and second filling material 122a are substantially filled in the corresponding second pixel grid 112 and the concave structure R11. In addition, each third pixel grid 113 also has a concave structure R11, and a part of the filters 123 is also filled in the concave structure R11 of the third pixel grid 113.

The color array substrate 100 may further include a plurality of light reflecting layers 140, and the light reflecting layers 140 cover the first side walls S1 and the second side walls S2, but do not cover the third side walls S3. Each of the first photoluminescence object 121, each of the second photoluminescence object 122, and each of the filter objects 123 substantially cover the corresponding light reflecting layer 140 and contact the light reflecting layer 140. The material of the reflective layer 140 is, for example, a metal, and the reflective layer 140 can be formed by physical vapor deposition (PVD), chemical vapor deposition (CVD), or atomic layer deposition (ALD). It is formed, wherein the aforementioned physical vapor deposition is, for example, sputtering, evaporation, or molecular beam epitaxy (MBE). These reflective layers 140 can be formed by, for example, oblique sputtering or oblique vapor deposition, and a shutter.

When the first photoluminescent substance 121 and the second photoluminescent substance 122 are excited to generate colored light R12 and colored light G12, respectively, the reflective layer 140 can reflect the colored light R12 and colored light G12, and can particularly reflect and transmit in the concave structure R11 Colored light R12 and colored light G12, so that the light L10 can sufficiently excite the first quantum dots 121b and the second quantum dots 122b located in the concave structure R11, and allow the colored lights R12 and G12 to enter the substrate 130 as much as possible, so that The colored lights R12 and G12 emitted from the substrate 130 are increased. In this way, the light-reflecting layer 140 can increase the light output efficiency, and thus help to improve the brightness and color saturation of the display.

In addition, in the embodiment shown in FIGS. 1B and 1C, the color array substrate 100 may further include a flat layer 150 and a transparent conductive layer 160. The flat layer 150 covers the mesh matrix 110, the first photoluminescent objects 121, the second photoluminescent objects 122, and the filters 123, and the transparent conductive layer 160 covers the flat layer 150, wherein the flat layer 150 is located on the transparent conductive layer. Between the layer 160 and the substrate 130. A constituent material of the flat layer 150 may be a polymer material, and a constituent material of the transparent conductive layer 160 may be indium tin oxide (ITO) or indium zinc oxide (IZO). The color array substrate 100 is suitable for a liquid crystal display (Liquid Crystal Display Panel, LCD), and can be sandwiched with a device array substrate to produce a liquid crystal display panel (LCD Panel), as shown in FIG. 2.

FIG. 2 is a schematic cross-sectional view of a display panel according to at least one embodiment of the present invention. Referring to FIG. 2, the display panel 200 includes a color array substrate 100 and an opposite substrate 220, wherein the opposite substrate 220 is disposed opposite to the color array substrate 100. In the embodiment shown in FIG. 2, the display panel 200 is a liquid crystal display panel and includes a liquid crystal layer 210. The liquid crystal layer 210 is disposed between the opposite substrate 220 and the color array substrate 100, that is, the color array substrate 100 and the opposite substrate. The substrate 220 sandwiches the liquid crystal layer 210.

The opposite substrate 220 may be an element array substrate, and includes a plurality of active elements 221 and a plurality of pixel electrodes 222. The active elements 221 are electrically connected to the pixel electrodes 222, respectively, and can output voltage to the pixel electrodes 222. Therefore, an electric field can be generated between the pixel electrodes 222 and the transparent conductive layer 160 to drive the plurality of liquid crystal molecules 211 in the liquid crystal layer 210 to deflect. Each active element 221 can be a thin film transistor and has a gate electrode 221g, a source electrode 221s, a drain electrode 221d, and a channel layer 221c. The drain electrode 221d is electrically connected to the pixel electrode 222.

The display panel 200 may further include a light generating structure 230. The light generating structure 230 may be a backlight module, and may include a light guide plate, a diffusion sheet, and a light source, where the light source may be a light emitting diode or a cold cathode fluorescent lamp tube as a light source. Alternatively, the light generating structure 230 may be an organic light emitting diode panel. The light generating structure 230 can emit light L20 toward the opposite substrate 220, and its spectrum may be the same as or similar to the light L10 in FIG. 1B. The light L20 can sequentially penetrate the opposite substrate 220, the liquid crystal layer 210, and the color array substrate 100.

3 is a schematic cross-sectional view of a display panel according to at least one embodiment of the present invention. Please refer to FIG. 3. The display panel 300 of this embodiment is similar to the display panel 200 of the previous embodiment, but the main difference is that the color array substrate 100 and the opposite substrate 330 included in the display panel 300. For example, the color array substrate 100 does not include the transparent conductive layer 160, and the opposite substrate 330 includes at least one light generating structure 331, wherein the flat layer 150 is disposed between the substrate 130 and the opposite substrate 330. In the embodiment shown in FIG. 3, the opposite substrate 330 includes a plurality of light generating structures 331, but in other embodiments, the number of the light generating structures 331 included in the opposite substrate 330 may be only one.

The light generating structures 331 are disposed relative to the first photoluminescent objects 121 and the second photoluminescent objects 122 and can emit light L20, that is, the wavelengths of the light L20 emitted by the individual light generating structures 331 are substantially the same. . The light generating structure 331 may be selected from the group consisting of Perovskite LED, light emitting diode, micro light emitting diode, mini light emitting diode, organic light emitting diode, laser diode, and ultraviolet light. Ethnic group made up of light sources. Therefore, the opposite substrate 330 may be an organic light emitting diode panel, or a printed circuit board assembly (PCBA) formed by mounting the light generating structures 331 on a circuit board (not labeled). That is, the opposite substrate 330 may be an electroluminescent substrate.

In summary, in the color array substrate of at least one embodiment of the present invention, the mesh matrix can partially block light to avoid photoluminescence objects (such as the first photoluminescence object 121 and the second photoluminescence object 122). Generate unnecessary colored light (such as colored lights R12 and G12), thereby increasing color saturation. In addition, because the thickness of all photoluminescence objects (such as the first photoluminescence object 121 and the second photoluminescence object 122) and the thickness of all filters are smaller than the maximum thickness of the mesh matrix, and the mesh matrix is convex Due to the surfaces of these photolumines (such as the first surface 121s and the second surface 122s) and the surfaces of these filters (such as the third surface 123s), the mesh matrix can greatly reduce the photoluminescence. No need to excite, which can effectively increase the color saturation.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains may make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

100‧‧‧color array substrate

110‧‧‧ mesh matrix

111‧‧‧ the first pixel grid

112‧‧‧Second Pixel Grid

113‧‧‧ Third pixel grid

121‧‧‧ first photoluminescence substance

121a‧‧‧First filling material

121b‧‧‧The first quantum dot

121s‧‧‧first surface

122‧‧‧Second photoluminescence

122a‧‧‧Second filling material

122b‧‧‧Second quantum dot

122s‧‧‧Second surface

123‧‧‧ Filter

123s‧‧‧ Third surface

129‧‧‧ scattering particles

130‧‧‧ substrate

131‧‧‧ surface

140‧‧‧Reflective layer

150‧‧‧ flat layer

160‧‧‧ transparent conductive layer

200, 300‧‧‧ display panel

210‧‧‧LCD layer

211‧‧‧LCD molecules

220, 330‧‧‧ Opposite substrate

221‧‧‧active element

221c‧‧‧Channel layer

221d‧‧‧Drain

221g‧‧‧Gate

221s‧‧‧Source

222‧‧‧pixel electrode

230, 331‧‧‧ light generating structure

A1‧‧‧First angle

A2‧‧‧Second Angle

A3‧‧‧ Third angle

A4‧‧‧ Fourth angle

B12, G12, R12‧‧‧ shade

L10, L20‧‧‧‧Light

R11‧‧‧ recessed structure

S1‧‧‧First side wall

S2‧‧‧Second sidewall

S3‧‧‧ Third side wall

S4‧‧‧ Top surface

T1, T2, T3‧‧‧thickness

T4‧‧‧Maximum thickness

W10, W23‧‧‧Minimum width

W12, W30‧‧‧ Maximum width

FIG. 1A is a schematic top view of a color array substrate according to at least one embodiment of the present invention. FIG. 1B is a schematic cross-sectional view taken along the line 1B-1B in FIG. 1A. FIG. 1C is an enlarged schematic view of the color array substrate in FIG. 1B at the first pixel grid. FIG. 2 is a schematic cross-sectional view of a display panel according to at least one embodiment of the present invention. 3 is a schematic cross-sectional view of a display panel according to at least one embodiment of the present invention.

Claims (18)

A color array substrate includes: a substrate having a surface; a mesh matrix formed on the surface and having a plurality of first pixel grids, a plurality of second pixel grids and a plurality of third images A pixel grid, wherein each of the first pixel grids, the second pixel grids and the third pixel grids is at least composed of a first side wall, a second side wall and a third A side wall is defined, wherein the first side wall extends from the surface and forms a first angle with the surface, the second side wall is connected to the first side wall to form a second angle and a concave structure, each of the second The side wall is connected between the first side wall and the third side wall, and the second side wall and the third side wall form a third included angle, wherein the first included angle is greater than 90 degrees and less than 180 degrees, and the second included angle is less than 180 Degrees, and the third included angle is less than 180 degrees; and a plurality of first photoluminescent objects are respectively disposed in the first pixel grids and substantially located in the concave structure of the first pixel grids Inside. The color array substrate of claim 1, wherein each of the first pixel grids corresponds to a minimum width at the first side wall of about 60 microns to 110 microns. The color array substrate according to claim 2, wherein each of the first pixel grids corresponds to a maximum width at the concave structure of about 70 microns to 120 microns. The color array substrate of claim 3, wherein each of the first pixel grids corresponds to a minimum width at the second side wall of about 50 microns to 100 microns. The color array substrate according to claim 1, wherein each of the first pixel grids, the second pixel grids, and the third pixel grids corresponds to the third side wall The maximum width is about 70 microns to 120 microns. The color array substrate according to claim 1, wherein the mesh matrix further has an upper surface, each of the third side walls is connected between the upper surface and the corresponding second side wall, and each of the third side walls Connected with the upper surface to form a fourth included angle, the fourth included angle is greater than 90 degrees and less than 180 degrees. The color array substrate according to claim 1, further comprising a plurality of reflective layers, the reflective layers respectively covering the first side walls and the second side walls, but not the third side walls. The color array substrate according to claim 7, wherein each of the first photoluminescent substances substantially covers the corresponding reflective layer. The color array substrate according to claim 1, wherein each of the first photoluminescent objects includes: a first filling material, substantially filling the corresponding first pixel grid and the concave structure; and A first quantum dot is mixed with the first filling material, and substantially fills the corresponding first pixel grid and the concave structure. The color array substrate of claim 9, wherein the materials of the first quantum dots are selected from the group consisting of perovskite, cadmium sulfide, cadmium selenide, cadmium telluride, and indium phosphide. The color array substrate according to claim 1, further comprising a plurality of second photoluminescent objects, the second photoluminescent objects are respectively arranged in the second pixel grids and are substantially located in the In the concave structure of the second pixel grid, each of the first photoluminescent objects is used to excite red light, and each of the second photoluminescent objects is used to excite green light. The color array substrate according to claim 11, wherein the thickness of each first photoluminescent object is smaller than the thickness of each second photoluminescent object, and each of the second photoluminescent objects includes: a second The filler material is substantially filled in the corresponding second pixel grid and the concave structure; and a plurality of second quantum dots are mixed in the second filler material and substantially filled in the corresponding second pixel grid And the concave structure, wherein the materials of the first quantum dots and the materials of the second quantum dots are selected from the group consisting of perovskite, cadmium sulfide, cadmium selenide, cadmium telluride, and indium phosphide. The color array substrate according to claim 12, further comprising a plurality of filters, the filters are respectively disposed on the third pixel grids and filled in the third pixel grids The concave structure. The color array substrate of claim 11, wherein the thickness of each first photoluminescent object and the thickness of each second photoluminescent object are both less than the maximum thickness of the mesh matrix. The color array substrate of claim 11, wherein each of the first photoluminescent objects has a first surface that does not contact the substrate, and each of the second photoluminescent objects has a third surface that does not contact the substrate On the two surfaces, each of the first surface and each of the second surfaces respectively extend from the corresponding second side wall, and the mesh matrix protrudes from each of the first surface and each of the second surfaces. A display panel includes: a color array substrate as in item 1 of the request item; and a counter substrate, which is arranged with respect to the color array substrate. The display panel according to claim 16, wherein the color array substrate further includes a plurality of second photoluminescent objects, the counter substrate includes at least one light generating structure, and the light generating structure is relative to the first lights The luminescent material and the second photoluminescent materials are provided, and the light generating structure is selected from the group consisting of perovskite diodes, miniature light emitting diodes, mini light emitting diodes, organic light emitting diodes, and lasers A group of diodes and ultraviolet light sources. The display panel according to claim 16 further includes a liquid crystal layer, and the counter substrate is an element array substrate, wherein the liquid crystal layer is disposed between the counter substrate and the color array substrate.