Display device, display panel and manufacturing method thereof

Abstract

The invention discloses a display device, a display panel and a manufacturing method of the display panel. The display panel comprises a filter film, the filter film comprises a light-transmitting area and a shading area, and the light-transmitting area comprises a plurality of first color films capable of transmitting a first color, a plurality of second color films capable of transmitting a second color and a plurality of third color films capable of transmitting a third color. The first color film, the second color film and the third color film are separated by the shading area. The shading area comprises a plurality of shading layers arranged in a laminated mode, and the shading layers comprise at least two of a first shading layer made of the same material as the first color film, a second shading layer made of the same material as the second color film and a third shading layer made of the same material as the third color film. The display panel provides a novel filter film structure, and the filter film with the structure omits the manufacturing process of a traditional black matrix, so that the process is simplified, and meanwhile, the material of the black matrix is saved.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display device, a display panel and a manufacturing method thereof. Background Art

[0002] One technical route of micro-display devices is white light devices + CF (Color Filter) filtering to achieve full-color display. Due to their extremely high PPI, the pixels of micro-display devices are extremely tiny. At such a tiny pixel resolution, color bleeding is more likely to occur in the product. In the traditional display field, BM (Black Matrix) is usually used to block the crosstalk light between pixels. Summary of the Invention

[0003] The purpose of the present application is to provide a display device, a display panel and a manufacturing method thereof that are convenient to manufacture and cost-saving.

[0004] The present application discloses a display panel, which includes a filter film;

[0005] The filter film includes a light-transmitting area and a light-blocking area;

[0006] The light-transmitting area includes:

[0007] Multiple first color filter films capable of transmitting a first color;

[0008] Multiple second color filter films capable of transmitting a second color;

[0009] Multiple third color filter films capable of transmitting a third color;

[0010] At least part of the first color filter film, the second color filter film and the third color filter film are separated by the light-blocking area;

[0011] The light-blocking area includes several light-blocking layers arranged in a stacked manner, and several of the light-blocking layers include at least two of a first light-blocking layer made of the same material as the first color filter film, a second light-blocking layer made of the same material as the second color filter film, and a third light-blocking layer made of the same material as the third color filter film.

[0012] Optionally, several of the light-blocking layers include the first light-blocking layer, the second light-blocking layer and the third light-blocking layer.

[0013] Optionally, the first color filter film, the second color filter film and the third color filter film have the same thickness; the stacked thickness of the first light-blocking layer, the second light-blocking layer and the third light-blocking layer is the same as the thickness of the first color filter film.

[0014] Optionally, the first light-blocking layer, the second light-blocking layer and the third light-blocking layer have the same thickness.

[0015] Optionally, several of the light-shielding layers include two of the first light-shielding layer, the second light-shielding layer, and the third light-shielding layer.

[0016] Optionally, the first color film, the second color film, and the third color film have the same thickness; the thickness of the superposition of two of the first light-shielding layer, the second light-shielding layer, and the third light-shielding layer is the same as the thickness of the first color film.

[0017] Optionally, some of the light-shielding regions include two of the first light-shielding layer, the second light-shielding layer, and the third light-shielding layer stacked; some of the light-shielding regions include all three of the first light-shielding layer, the second light-shielding layer, and the third light-shielding layer.

[0018] Optionally, the thickness of some of the light-shielding regions formed by two light-shielding layers is the same as the thickness of the first color film.

[0019] Optionally, the thickness of some of the light-shielding regions formed by three light-shielding layers is the same as the thickness of the first color film.

[0020] The present application also discloses a method for manufacturing a display panel, which includes manufacturing a color filter film;

[0021] The manufacturing of the color filter film includes:

[0022] Coating a first color resin that can transmit a first color, and performing exposure and development on the first color resin to form a first color film and a first light-shielding layer;

[0023] Coating a second color resin that can transmit a second color, and performing exposure and development on the second color resin to form a second color film and a second light-shielding layer;

[0024] Coating a third color resin that can transmit a third color, and performing exposure and development on the third color resin to form a third color film and a third light-shielding layer;

[0025] The first light-shielding layer, the second light-shielding layer, and the third light-shielding layer are stacked to form a light-shielding region; the first color film, the second color film, and the third color film together constitute a light-transmitting region; the light-shielding region separates the first color film, the second color film, and the third color film.

[0026] Optionally, the first color resin, the second color resin, and the third color resin are all negative resins; the mask used for exposure and development includes a fully transparent region corresponding to the light-transmitting region and a low-transparency region corresponding to the light-shielding region.

[0027] Optionally, the transmittance of the low-transparency region is 30%.

[0028] The present application also discloses a display device, which includes the above-mentioned display panel.

[0029] Compared with the related art, the display panel of the present application provides a new filter film structure. The filter film of this structure omits the manufacturing process of the traditional black matrix, simplifies the process and saves the material of the black matrix at the same time.

[0030] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0032] Figure 1 Schematic diagram when the first color resist is exposed in an embodiment of the display panel of the present application.

[0033] Figure 2 Schematic structural diagram after the first color film is formed in an embodiment of the display panel of the present application.

[0034] Figure 3 Schematic diagram when the second color resist is exposed in an embodiment of the display panel of the present application.

[0035] Figure 4 Schematic structural diagram after the second color film is formed in an embodiment of the display panel of the present application.

[0036] Figure 5 Schematic diagram when the third color resist is exposed in an embodiment of the display panel of the present application.

[0037] Figure 6 Schematic structural diagram after the third color film is formed in an embodiment of the display panel of the present application.

[0038] Figure 7 Schematic structural diagram after the third color film is formed in another embodiment of the display panel of the present application.

[0039] Figure 8 Partial schematic diagram of the mask plate used in an embodiment of the display panel of the present application.

[0040] Figure 9 Top view schematic diagram of the filter film in an embodiment of the display panel of the present application.

[0041] Figure 10 Top view schematic diagram of the filter film in another embodiment of the display panel of the present application.

[0042] Figure 11 Top view schematic diagram of the filter film in yet another embodiment of the display panel of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this specification. On the contrary, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0044] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in this specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The terms "first", "second" and similar terms used in this specification and the claims do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms "a" or "an" and the like do not denote a quantity limitation, but rather denote the presence of one. "Plurality" or "several" means two or more. Unless otherwise indicated, terms such as "front", "rear", "lower" and / or "upper" are for convenience of description only and are not limited to one position or a spatial orientation. The terms "comprising" or "including" and the like are intended to mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0045] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure. The singular forms "a", "the" and "said" used in this specification and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0046] Because of its ultra-high PPI, the pixel diameter d of the micro display device is between 3um and 8um. Under this pixel specification, the display panel is prone to faults such as color bleeding. In the related art, a method of using a black matrix plus a color film is adopted to prevent color bleeding, but this structure is complex in the manufacturing process and increases the additional cost.

[0047] To solve the above problems, as Figure 6 shown, this application provides a display panel, which includes a filter film 1000, and the filter film 1000 includes a light-transmitting area 100 and a light-shielding area 200;

[0048] The light-transmitting region 100 includes:

[0049] A plurality of first color films 110 capable of transmitting a first color;

[0050] A plurality of second color films 120 capable of transmitting a second color;

[0051] A plurality of third color films 130 capable of transmitting a third color;

[0052] At least a part of the first color film 110, the second color film 120, and the third color film 130 is separated by the light-shielding region 200;

[0053] The light-shielding region 200 includes a plurality of light-shielding layers arranged in a stacked manner, and the plurality of light-shielding layers include at least two of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130.

[0054] The present application further provides a method for manufacturing a display panel, which includes manufacturing a color filter film;

[0055] The manufacturing of the color filter film includes:

[0056] Coating a first color resin 140 capable of transmitting a first color, and performing exposure and development on the first color resin 140 to form a first color film 110 and a first light-shielding layer 210;

[0057] Coating a second color resin 150 capable of transmitting a second color, and performing exposure and development on the second color resin 150 to form a second color film 120 and a second light-shielding layer 220;

[0058] Coating a third color resin 160 capable of transmitting a third color, and performing exposure and development on the third color resin 160 to form a third color film 130 and a third light-shielding layer 230;

[0059] The first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are arranged in a stacked manner to form the light-shielding region 200; the first color film 110, the second color film 120, and the third color film 130 together constitute the light-transmitting region 100; the light-shielding region 200 separates the first color film 110, the second color film 120, and the third color film 130.

[0060] The present application further provides a display device, which includes the above-mentioned display panel.

[0061] The display panel of the present application provides a new color filter film structure. The color filter film of this structure eliminates the manufacturing process of the traditional black matrix, simplifies the process, and saves the materials of the black matrix.

[0062] The following will describe in detail each embodiment of the present application that conforms to the above creative concept.

[0063] As Figure 6 and Figure 7 and Figure 9 shown, the present application provides a display panel, and the display panel includes a filter film 1000. The filter film 1000 can be applied to an OLED (Organic Light-Emitting Diode) display panel, a Micro-OLED display panel, a QLED (Quantum Dot Light Emitting Diodes) display panel, an LCD (Liquid Crystal Display) display panel, etc.

[0064] As Figures 1 to 6 and Figures 9 to 11 shown, in an alternative embodiment, the filter film 1000 is applied to a Micro-OLED display panel 400. The Micro-OLED display panel 400 includes a first substrate 410. The first substrate 410 can be a rigid first substrate. Among them, the rigid first substrate can be a glass first substrate, a PMMA (Polymethyl methacrylate) first substrate, a silicon substrate, etc. Of course, the first substrate 410 can also be a flexible first substrate. Among them, the flexible first substrate can be a PET (Polyethylene terephthalate) first substrate, a PEN (Polyethylene naphthalate two formic acid glycol ester) first substrate, or a PI (Polyimide) first substrate.

[0065] An anode 420 is provided on one side of the first substrate 410. A light-emitting layer 430 is provided on the side of the anode 420 away from the first substrate 410. The light-emitting layer 430 can be an LED light-emitting layer, an OLED light-emitting layer, etc., as long as it can emit light with sufficient intensity. A cathode 440 is provided on the side of the light-emitting layer 430 away from the anode 420. The cathode 440 is a transparent electrode, such as an ITO (Indium Tin Oxide) transparent electrode, a Mg / Ag electrode, or other alloy electrodes. An insulating layer 450 and a planarizing layer 460 are provided on the side of the cathode 440 away from the light-emitting layer 430. Optionally, the insulating layer 450 and the planarizing layer 460 can be one layer or multiple layers. For example, it can be one insulating layer 450 and one planarizing layer 460, or two insulating layers 450 and one planarizing layer 460, or one insulating layer 450 and two planarizing layers 460, or two insulating layers 450 and two planarizing layers 460, etc. Optionally, the insulating layer 450 and the planarizing layer 460 can be made of organic materials, such as organic resins, polyimide films (Polyimide Film), etc., or inorganic materials, such as silicon dioxide, silicon nitride, etc.

[0066] A filter film 1000 is provided on the side of the insulating layer 450 and the planarizing layer 460 away from the cathode 440. The filter film 1000 includes a light-transmitting region 100 and a light-blocking region 200. The light-transmitting region 100 includes a number of first color films 110 that can transmit a first color, a number of second color films 120 that can transmit a second color, and a number of third color films 130 that can transmit a third color. Optionally, the first color can be blue, the second color can be red, and the third color can be green. The first color can also be red, the second color can be blue, and the third color can be green, etc. Optionally, the first color can be blue, the second color can be red, and the third color can be yellow, etc. As long as the superposition of the first color, the second color, and the third color can achieve a certain degree of display function.

[0067] Optionally, the first color film 110, the second color film 120, and the third color film 130 can be quadrilateral color films, or hexagonal color films, or color films with irregular shapes; or the first color film 110 is a hexagonal color film, and the second color film 120 and the third color film 130 are quadrilateral color films; or the first color film 110 is a hexagonal color film, and the second color film 120 and the third color film 130 are color films with irregular shapes, etc. The areas of the first color film 110, the second color film 120, and the third color film 130 can also be set as required. As long as the light output amounts passing through the first color film 110, the second color film 120, and the third color film 130 are within a reasonable range. The first color film 110, the second color film 120, and the third color film 130 have the same thickness, that is, the thickness of the entire light-transmitting region 100 is uniform, that is, the two side surfaces of the entire light-transmitting region 100 are flat.

[0068] A plurality of first color films 110, a plurality of second color films 120, and a plurality of third color films 130 are respectively arranged in an array on the filter film 1000. The regions between the first color film 110, the second color film 120, and the third color film 130 are light-shielding regions 200, that is, the first color film 110, the second color film 120, and the third color film 130 are separated by the light-shielding regions 200.

[0069] The light-shielding region 200 includes a plurality of light-shielding layers arranged in a stacked manner, and the plurality of light-shielding layers includes at least two of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130.

[0070] Optionally, the plurality of light-shielding layers includes two of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130. The orthographic projections of the two light-shielding layers in their thickness directions completely overlap. For example, the light-shielding region 200 between the first color film 110 and the second color film 120 is formed by stacking the first light-shielding layer 210 and the second light-shielding layer 220; the light-shielding region 200 between the first color film 110 and the third color film 130 is formed by stacking the first light-shielding layer 210 and the third light-shielding layer 230; the light-shielding region 200 between the second color film 120 and the third color film 130 is formed by stacking the second light-shielding layer 220 and the third light-shielding layer 230. Optionally, the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are equal, and the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 can also be adjusted according to actual needs to be unequal. The thickness of the superposition of two of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 is the same as the thicknesses of the first color film 110, the second color film 120, and the third color film 130. In this way, the thickness of the entire light-shielding region 200 is uniform, that is, the two side surfaces of the entire light-shielding region 200 are flat. The thickness of the entire light-shielding region 200 is the same as the thickness of the entire light-transmitting region 100, that is, the thickness of the entire filter film 1000 is uniform and the surface is flat. If the surface of the filter film 1000 is uneven, the thickness of the filter film 1000 can be made uniform and the surface can be made flat by setting a flat layer or coating an organic or inorganic material.

[0071] Optionally, several light-shielding layers include three of the first light-shielding layer 210 made of the same material as the first color film 110, the second light-shielding layer 220 made of the same material as the second color film 120, and the third light-shielding layer 230 made of the same material as the third color film 130. The orthographic projections of the three light-shielding layers in their thickness directions completely overlap. Optionally, the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are equal, or the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 can also be adjusted according to actual requirements to be unequal. The thickness of the superposition of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 is the same as the thicknesses of the first color film 110, the second color film 120, and the third color film 130. In this way, the thickness of the entire light-shielding area 200 is uniform, that is, the two side surfaces of the entire light-shielding area 200 are flat. The thickness of the entire light-shielding area 200 is the same as that of the entire light-transmitting area 100, that is, the thickness of the entire filter film 1000 is uniform and the surface is flat.

[0072] As Figure 10 shown, in an alternative embodiment, the first color film 110, the second color film 120, and the third color film 130 are all hexagonal in shape. The first color film 110, the second color film 120, and the third color film 130 are arranged in an array. The periphery of the first color film 110 is surrounded by the first light-shielding layer 210 made of the same material as the first color film 110, the periphery of the second color film 120 is surrounded by the second light-shielding layer 220 made of the same material as the second color film 120, and the periphery of the third color film 130 is surrounded by the third light-shielding layer 230 made of the same material as the third color film 130. The area between the first color film 110 and the second color film 120 forms a light-shielding area 200 where the first light-shielding layer 210 and the second light-shielding layer 220 are superposed. The area between the first color film 110 and the third color film 130 forms a light-shielding area 200 where the first light-shielding layer 210 and the third light-shielding layer 230 are superposed. The area between the second color film 120 and the third color film 130 forms a light-shielding area 200 where the second light-shielding layer 220 and the third light-shielding layer 230 are superposed. The intersection area between the first color film 110, the second color film 120, and the third color film 130 forms a light-shielding area 200 where the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are superposed. The thickness of the light-shielding area 200 formed by the superposition of different light-shielding layers is always the same as the thickness of the entire light-transmitting area 100. As Figure 11As shown, in an alternative embodiment, the first color filter film 110, the second color filter film 120, and the third color filter film 130 are all hexagonal in shape. The first color filter film 110, the second color filter film 120, and the third color filter film 130 are arranged in an array. The light-shielding area 200 is covered with a first light-shielding layer 210 made of the same material as the first color filter film 110. The periphery of the second color filter film 120 is surrounded by a second light-shielding layer 220 made of the same material as the second color filter film 120. The periphery of the third color filter film 130 is surrounded by a third light-shielding layer 230 made of the same material as the third color filter film 130. The area between the first color filter film 110 and the second color filter film 120 forms a light-shielding area 200 where the first light-shielding layer 210 and the second light-shielding layer 220 overlap. The area between the first color filter film 110 and the third color filter film 130 forms a light-shielding area 200 where the first light-shielding layer 210 and the third light-shielding layer 230 overlap. The area between the second color filter film 120 and the third color filter film 130 forms a light-shielding area 200 where the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 overlap. The thickness of the light-shielding area 200 formed by the overlapping of different light-shielding layers is always the same as the thickness of the entire light-transmitting area 100. Optionally, the light-shielding area 200 can be covered with a second light-shielding layer 220 made of the same material as the second color filter film 120. The periphery of the first color filter film 110 is surrounded by a first light-shielding layer 210 made of the same material as the first color filter film 110. The periphery of the third color filter film 130 is surrounded by a third light-shielding layer 230 made of the same material as the third color filter film 130. Or, the light-shielding area 200 can be covered with a third light-shielding layer 230 made of the same material as the third color filter film 130. The periphery of the first color filter film 110 is surrounded by a first light-shielding layer 210 made of the same material as the first color filter film 110. The periphery of the second color filter film 120 is surrounded by a second light-shielding layer 220 made of the same material as the second color filter film 120, etc.

[0073] The first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 in the light-shielding area 200 can be arbitrarily set according to requirements. It only needs to satisfy that at least two different light-shielding layers overlap in any part of the light-shielding area 200.

[0074] As Figures 1 to 7 and Figures 9 to 11 shown, in an alternative embodiment, the filter film 1000 is applied to the LCD display panel 500. The LCD display panel 500 includes a backlight module 510. The backlight module 510 can provide uniform and strong enough white light across the entire surface. Optionally, the backlight module 510 can be composed of structures such as LED light bars, light masks, reflective films, light guide plates, diffusion films, and brightness enhancement films (not shown in the figure). The backlight module 510 can be composed of other structures as long as it can provide uniform and strong enough white light across the entire surface.

[0075] On one side of the light-emitting surface of the backlight module 510, a second substrate 520 is provided. The second substrate 520 is a transparent substrate, such as glass, etc. On the side of the second substrate 520 away from the backlight module 510, a control circuit layer 530 is provided. Optionally, the control circuit layer 530 may include a pixel control circuit composed of transistors, etc. (not shown in the figure). On the side of the control circuit layer 530 away from the second substrate 520, a liquid crystal layer 540 is provided. The liquid crystal layer 540 is filled with liquid crystal molecules. The liquid crystal molecules deflect in orientation under the control of the control circuit layer 530 to control the light emitted by the backlight module 510.

[0076] On the side of the liquid crystal layer 540 away from the control circuit layer 530, a filter film 1000 is provided. The filter film 1000 includes a light-transmitting area 100 and a light-shielding area 200. The light-transmitting area 100 includes a number of first color films 110 that can transmit a first color, a number of second color films 120 that can transmit a second color, and a number of third color films 130 that can transmit a third color. Optionally, the first color may be blue, the second color may be red, and the third color may be green. The first color may also be red, the second color may be blue, and the third color may be green, etc. Optionally, the first color may be blue, the second color may be red, and the third color may be yellow, etc. As long as the superposition of the first color, the second color, and the third color can achieve a certain degree of display function.

[0077] Optionally, the first color film 110, the second color film 120, and the third color film 130 may be quadrilateral color films, may be hexagonal color films, or may be color films with irregular shapes; or the first color film 110 is a hexagonal color film, and the second color film 120 and the third color film 130 are quadrilateral color films; or the first color film 110 is a hexagonal color film, and the second color film 120 and the third color film 130 are color films with irregular shapes, etc. The areas of the first color film 110, the second color film 120, and the third color film 130 can also be set as required. As long as the light output amounts passing through the first color film 110, the second color film 120, and the third color film 130 are within a reasonable range. The first color film 110, the second color film 120, and the third color film 130 have the same thickness, that is, the thickness of the entire light-transmitting area 100 is uniform, that is, the two side surfaces of the entire light-transmitting area 100 are flat.

[0078] A number of first color films 110, a number of second color films 120, and a number of third color films 130 are respectively arranged in an array on the filter film 1000. The area between the first color film 110, the second color film 120, and the third color film 130 is the light-shielding area 200, that is, the first color film 110, the second color film 120, and the third color film 130 are separated by the light-shielding area 200.

[0079] The light-shielding area 200 includes a plurality of light-shielding layers arranged in a stacked manner, and the plurality of light-shielding layers includes at least two of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130.

[0080] Optionally, the plurality of light-shielding layers includes two of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130. The orthographic projections of the two light-shielding layers in their thickness directions completely overlap. For example, the light-shielding area 200 between the first color film 110 and the second color film 120 is formed by laminating the first light-shielding layer 210 and the second light-shielding layer 220; the light-shielding area 200 between the first color film 110 and the third color film 130 is formed by laminating the first light-shielding layer 210 and the third light-shielding layer 230; the light-shielding area 200 between the second color film 120 and the third color film 130 is formed by laminating the second light-shielding layer 220 and the third light-shielding layer 230. Optionally, the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are equal, and the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 can also be adjusted according to actual needs to make them unequal. The thickness of the superposition of two of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 is the same as the thicknesses of the first color film 110, the second color film 120, and the third color film 130. In this way, the thickness of the entire light-shielding area 200 is uniform, that is, the two side surfaces of the entire light-shielding area 200 are flat. The thickness of the entire light-shielding area 200 is the same as the thickness of the entire light-transmitting area 100, that is, the thickness of the entire light-filtering film 1000 is uniform and the surface is flat.

[0081] Optionally, the plurality of light-shielding layers includes three of a first light-shielding layer 210 made of the same material as the first color film 110, a second light-shielding layer 220 made of the same material as the second color film 120, and a third light-shielding layer 230 made of the same material as the third color film 130. The orthographic projections of the three light-shielding layers in their thickness directions completely overlap. Optionally, the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are equal, and the thicknesses of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 can also be adjusted according to actual needs to make them unequal. The thickness of the superposition of the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 is the same as the thicknesses of the first color film 110, the second color film 120, and the third color film 130. In this way, the thickness of the entire light-shielding area 200 is uniform, that is, the two side surfaces of the entire light-shielding area 200 are flat. The thickness of the entire light-shielding area 200 is the same as the thickness of the entire light-transmitting area 100, that is, the thickness of the entire light-filtering film 1000 is uniform and the surface is flat.

[0082] AsFigure 10 As shown, in an optional embodiment, the first color film 110, the second color film 120, and the third color film 130 are all hexagonal in shape. The first color film 110, the second color film 120, and the third color film 130 are arranged in an array. The periphery of the first color film 110 is surrounded by a first light-shielding layer 210 made of the same material as the first color film 110. The periphery of the second color film 120 is surrounded by a second light-shielding layer 220 made of the same material as the second color film 120. The periphery of the third color film 130 is surrounded by a third light-shielding layer 230 made of the same material as the third color film 130. The area between the first color film 110 and the second color film 120 forms a light-shielding area 200 where the first light-shielding layer 210 and the second light-shielding layer 220 overlap. The area between the first color film 110 and the third color film 130 forms a light-shielding area 200 where the first light-shielding layer 210 and the third light-shielding layer 230 overlap. The area between the second color film 120 and the third color film 130 forms a light-shielding area 200 where the second light-shielding layer 220 and the third light-shielding layer 230 overlap. The intersection area between the first color film 110, the second color film 120, and the third color film 130 forms a light-shielding area 200 where the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 overlap. The thickness of the light-shielding area 200 formed by the overlap of different light-shielding layers is always consistent with the thickness of the entire light-transmitting area 100.

[0083] As Figure 11As shown, in an alternative embodiment, the first color film 110, the second color film 120, and the third color film 130 are all hexagonal in shape. The first color film 110, the second color film 120, and the third color film 130 are arranged in an array. The light-shielding region 200 is covered with a first light-shielding layer 210 made of the same material as the first color film 110. The periphery of the second color film 120 is surrounded by a second light-shielding layer 220 made of the same material as the second color film 120. The periphery of the third color film 130 is surrounded by a third light-shielding layer 230 made of the same material as the third color film 130. The region between the first color film 110 and the second color film 120 forms a light-shielding region 200 where the first light-shielding layer 210 and the second light-shielding layer 220 overlap. The region between the first color film 110 and the third color film 130 forms a light-shielding region 200 where the first light-shielding layer 210 and the third light-shielding layer 230 overlap. The region between the second color film 120 and the third color film 130 forms a light-shielding region 200 where the first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 overlap. The thickness of the light-shielding region 200 formed by the overlapping of different light-shielding layers is always the same as the thickness of the entire light-transmitting region 100. Optionally, the light-shielding region 200 can be covered with a second light-shielding layer 220 made of the same material as the second color film 120. The periphery of the first color film 110 is surrounded by a first light-shielding layer 210 made of the same material as the first color film 110. The periphery of the third color film 130 is surrounded by a third light-shielding layer 230 made of the same material as the third color film 130. Or, the light-shielding region 200 can be covered with a third light-shielding layer 230 made of the same material as the third color film 130. The periphery of the first color film 110 is surrounded by a first light-shielding layer 210 made of the same material as the first color film 110. The periphery of the second color film 120 is surrounded by a second light-shielding layer 220 made of the same material as the second color film 120, etc.

[0084] The first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 in the light-shielding region 200 can be set arbitrarily according to requirements. It only needs to satisfy that at least two different light-shielding layers overlap in any part of the light-shielding region 200.

[0085] As Figures 1 to 6 and Figures 8 to 11 shown, in an alternative embodiment, the filter film 1000 is applied to the Micro-OLED display panel 400. When forming the filter film 1000 on the side of the insulating layer 450 and the planarizing layer 460 away from the cathode 440, the following steps are included:

[0086] Coat the first color resist 140 that can transmit the first color. Optionally, the first color can be blue, and the first color resist 140 can be a negative resist. Use the first mask 310 to expose and develop the first color resist 140 to form the first color film 110 and the first light-shielding layer 210. Optionally, the first mask 310 used for exposure and development includes a fully transmissive area 311, a low-transmission area 312, and a non-transmissive area 313. The fully transmissive area 311 corresponds to the first color film 110, the low-transmission area 312 corresponds to the first light-shielding layer 210, and the non-transmissive area 313 corresponds to the second color film 120 and the third color film 130. The transmittance of the low-transmission area 312 is 30%.

[0087] Coat the second color resist 150 that can transmit the second color. Optionally, the second color can be red, and the second color resist 150 can be a negative resist. Use the second mask 320 to expose and develop the second color resist 150 to form the second color film 120 and the second light-shielding layer 220. Optionally, the second mask 320 used for exposure and development includes a fully transmissive area 321, a low-transmission area 322, and a non-transmissive area 323. The fully transmissive area 321 corresponds to the second color film 120, the low-transmission area 322 corresponds to the second light-shielding layer 220, and the non-transmissive area 323 corresponds to the first color film 110 and the third color film 130. The transmittance of the low-transmission area 322 is 30%.

[0088] Coat the third color resist 160 that can transmit the third color. Optionally, the second color can be green, and the third color resist 160 can be a negative resist. Use the third mask 330 to expose and develop the third color resist 160 to form the third color film 130 and the third light-shielding layer 230. Optionally, the third mask 330 used for exposure and development includes a fully transmissive area 331, a low-transmission area 332, and a non-transmissive area 333. The fully transmissive area 331 corresponds to the third color film 130, the low-transmission area 332 corresponds to the third light-shielding layer 230, and the non-transmissive area 333 corresponds to the first color film 110 and the second color film 120. The transmittance of the low-transmission area 332 is 30%.

[0089] The first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are stacked to form the light-shielding area 200. The first color film 110, the second color film 120, and the third color film 130 together constitute the light-transmissive area 100. The light-shielding area 200 separates the first color film 110, the second color film 120, and the third color film 130.

[0090] As Figures 1 to 7 shown, in an alternative embodiment, the filter film 1000 is applied to the LCD display panel 500. The filter film 1000 is first formed on one side of the third substrate 550, and its forming process includes the following steps:

[0091] Coat a first color resist 140 that can transmit a first color. Optionally, the first color can be blue, and the first color resist 140 can be a negative resist. Use a first mask 310 to expose and develop the first color resist 140 to form a first color film 110 and a first light-shielding layer 210. Optionally, the first mask 310 used for exposure and development includes a fully transmissive area 311, a low-transmission area 312, and a non-transmissive area 313. The fully transmissive area 311 corresponds to the first color film 110, the low-transmission area 312 corresponds to the first light-shielding layer 210, and the non-transmissive area 313 corresponds to the second color film 120 and the third color film 130. The transmittance of the low-transmission area 312 is 30%.

[0092] Coat a second color resist 150 that can transmit a second color. Optionally, the second color can be red, and the second color resist 150 can be a negative resist. Use a second mask 320 to expose and develop the second color resist 150 to form a second color film 120 and a second light-shielding layer 220. Optionally, the second mask 320 used for exposure and development includes a fully transmissive area 321, a low-transmission area 322, and a non-transmissive area 323. The fully transmissive area 321 corresponds to the second color film 120, the low-transmission area 322 corresponds to the second light-shielding layer 220, and the non-transmissive area 323 corresponds to the first color film 110 and the third color film 130. The transmittance of the low-transmission area 322 is 30%.

[0093] Coat a third color resist 160 that can transmit a third color. Optionally, the second color can be green, and the third color resist 160 can be a negative resist. Use a third mask 330 to expose and develop the third color resist 160 to form a third color film 130 and a third light-shielding layer 230. Optionally, the third mask 330 used for exposure and development includes a fully transmissive area 331, a low-transmission area 332, and a non-transmissive area 333. The fully transmissive area 331 corresponds to the third color film 130, the low-transmission area 332 corresponds to the third light-shielding layer 230, and the non-transmissive area 333 corresponds to the first color film 110 and the second color film 120. The transmittance of the low-transmission area 332 is 30%.

[0094] The first light-shielding layer 210, the second light-shielding layer 220, and the third light-shielding layer 230 are stacked to form a light-shielding area 200. The first color film 110, the second color film 120, and the third color film 130 together constitute a light-transmissive area 100. The light-shielding area 200 separates the first color film 110, the second color film 120, and the third color film 130.

[0095] Finally, the side of the third substrate 550 having the filter film 1000 is aligned with the side of the second substrate 520 having the control circuit layer 530 to form an LCD display panel 500.

[0096] Those skilled in the art will readily conceive of other embodiments of the present specification after considering the specification and practicing the invention claimed herein. The present specification is intended to cover any variations, uses, or adaptations of the present specification, which follow the general principles of the present specification and include known common general knowledge or conventional technical means in the technical field not claimed in the present specification. The specification and examples are only to be regarded as exemplary, and the true scope and spirit of the present specification are pointed out by the following claims.

[0097] It should be understood that the present specification is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present specification is only limited by the appended claims.

[0098] The above are only the preferred embodiments of the present specification and are not intended to limit the present specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present specification shall be included within the scope of protection of the present specification.

Claims

1. A display panel, characterized in that, it includes a color filter film; the color filter film includes a light-transmitting area and a light-blocking area; the light-transmitting area includes: a plurality of first color films capable of transmitting a first color; a plurality of second color films capable of transmitting a second color; a plurality of third color films capable of transmitting a third color; at least a part of the first color film, the second color film, and the third color film is separated by the light-blocking area; the light-blocking area includes a plurality of stacked light-blocking layers, and the plurality of light-blocking layers include at least two of a first light-blocking layer made of the same material as the first color film, a second light-blocking layer made of the same material as the second color film, and a third light-blocking layer made of the same material as the third color film.

2. The display panel according to claim 1, characterized in that, the plurality of light-blocking layers include the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer.

3. The display panel according to claim 2, characterized in that, the first color film, the second color film, and the third color film have the same thickness; the stacked thickness of the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer is the same as the thickness of the first color film.

4. The display panel according to claim 3, characterized in that, the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer have the same thickness.

5. The display panel according to claim 1, characterized in that, the plurality of light-blocking layers include two of the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer.

6. The display panel according to claim 5, characterized in that, the first color film, the second color film, and the third color film have the same thickness; the stacked thickness of two of the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer is the same as the thickness of the first color film.

7. The display panel according to claim 1, characterized in that, a part of the light-blocking area includes two of the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer stacked; a part of the light-blocking area includes all three of the first light-blocking layer, the second light-blocking layer, and the third light-blocking layer.

8. The display panel according to claim 7, characterized in that, the thickness of the part of the light-blocking area formed by two light-blocking layers is the same as the thickness of the first color film.

9. The display panel according to claim 7, characterized in that, the thickness of the part of the light-blocking area formed by three light-blocking layers is the same as the thickness of the first color film.

10. A method for manufacturing a display panel, characterized in that, it includes manufacturing a color filter film; the manufacturing of the color filter film includes: coating a first color paste capable of transmitting a first color, and performing exposure and development on the first color paste to form a first color film and a first light-blocking layer; coating a second color paste capable of transmitting a second color, and performing exposure and development on the second color paste to form a second color film and a second light-blocking layer; coating a third color paste capable of transmitting a third color, and performing exposure and development on the third color paste to form a third color film and a third light-blocking layer; The first light-shielding layer, the second light-shielding layer, and the third light-shielding layer are stacked to form a light-shielding region; the first color film, the second color film, and the third color film together constitute a light-transmitting region; the light-shielding region separates the first color film, the second color film, and the third color film.

11. The method for manufacturing a display panel according to claim 10, wherein, the first color resist, the second color resist, and the third color resist are all negative resists; the mask used for exposure and development includes a fully transmissive region corresponding to the light-transmitting region and a low-transmission region corresponding to the light-shielding region.

12. The method for manufacturing a display panel according to claim 11, wherein, the transmittance of the low-transmission region is 30%.

13. A display device, wherein, the display device includes the display panel according to any one of claims 1-9.

Images