Colour filter panel and display device

Abstract

A color filter panel and a display apparatus are provided. The color filter panel includes a base substrate having a first pixel area, a second pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a first photoluminescence pattern on the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence; and a second photoluminescence pattern on the second color filter in the second pixel area and configured to convert a color of light by using photoluminescence. The second photoluminescence pattern is partially overlaid with the first photoluminescence pattern in the light blocking area.

Description

TECHNICAL FIELD

[0001] Aspects of an exemplary embodiment of the present application relate to a color filter panel, a display apparatus including the same, and a method of manufacturing the same. BACKGROUND

[0002] Recently, display apparatuses having light weight and small size have been manufactured. Cathode ray tube (CRT) display apparatuses were previously used due to their performance and competitive prices. However, CRT display apparatuses have weaknesses in their size and / or portability. Accordingly, display apparatuses such as plasma display (PDP) apparatuses, liquid crystal display (LCD) apparatuses, and organic light emitting (OLED) display apparatuses are highly valued due to their small size, light weight, and low power consumption.

[0003] A display apparatus can include a color filter panel having a color conversion structure such as quantum dots to convert a color of light by using photoluminescence. The color conversion structure can impart a desired color to an image, improve color reproducibility of the image, and improve light emission efficiency to improve display quality. However, as the resolution of the display apparatus increases, it is difficult to maintain manufacturing efficiency according to the structure of the color filter panel. SUMMARY

[0004] One or more exemplary embodiments of the present application provide a color filter panel having improved quality.

[0005] One or more exemplary embodiments of the present application also provide a display apparatus including the same.

[0006] One or more exemplary embodiments of the present application also provide a method of manufacturing the same.

[0007] According to an exemplary embodiment of the present application, a color filter panel includes a base substrate having a first pixel area, a second pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a first photoluminescence pattern on the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence; and a second photoluminescence pattern on the second color filter in the second pixel area and configured to convert a color of light by using photoluminescence. The second photoluminescence pattern is partially overlaid with the first photoluminescence pattern in the light blocking area.

[0008] The first photoluminescent pattern can include red quantum dots or red phosphor, and the second photoluminescent pattern can include green quantum dots or green phosphor. The first color filter can be a red color filter, and the second color filter can be a green color filter.

[0009] The base substrate can have a third pixel area, and the color filter panel can further include a blue color filter on the base substrate in the third pixel area and in the light blocking area.

[0010] The color filter panel can further include a transparent pattern on the blue color filter in the third pixel area, and a first insulating layer between the first color filter and the first photoluminescent pattern, between the second color filter and the second photoluminescent pattern, and between the blue color filter and the transparent pattern.

[0011] In the light blocking area between the third pixel area and the second pixel area, the transparent pattern can partially overlap the second photoluminescent pattern, and can partially contact the second photoluminescent pattern.

[0012] The color filter panel can further include a first light blocking pattern on the blue color filter in the light blocking area, and a width of the first light blocking pattern can be smaller than a width of the blue color filter in the light blocking area.

[0013] The color filter panel can further include a second insulating layer on the first photoluminescent pattern and the second photoluminescent pattern, and a second light blocking pattern on the second insulating layer in the light blocking area. A portion of the second photoluminescent pattern that overlaps the second light blocking pattern can have a flat portion that is planarized by a planarization process.

[0014] The first color filter and the second color filter can be spaced apart from each other in the light blocking area, the first color filter and the second color filter can form a groove in the light blocking area, and a portion of the first photoluminescent pattern can be located in the groove.

[0015] A portion of the second photoluminescent pattern that overlaps the groove in the light blocking area can have a flat portion that is planarized by a planarization process.

[0016] According to an example embodiment of the present application, a display apparatus includes a backplane panel including a thin film transistor, and a color filter panel located on the backplane panel. The color filter panel includes a base substrate having a first pixel area, a second pixel area, and a light blocking area located between the first pixel area and the second pixel area, a first color filter located on the base substrate in the first pixel area, a second color filter located on the base substrate in the second pixel area, a first photoluminescence pattern located on the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence, and a second photoluminescence pattern located on the second color filter in the second pixel area and configured to convert a color of light by using photoluminescence. The second photoluminescence pattern can partially overlap the first photoluminescence pattern in the light blocking area.

[0017] The backplane panel can further include an organic light emitting element configured to emit blue light to the first pixel area and the second pixel area.

[0018] The display apparatus can further include a liquid crystal layer located between the backplane panel and the color filter panel, and a backlight unit located under the backplane panel and configured to emit blue light.

[0019] The first color filter and the second color filter can be spaced apart from each other in the light blocking area, the first color filter and the second color filter can form a groove in the light blocking area, and a portion of the first photoluminescence pattern can be located in the groove.

[0020] The base substrate can have a third pixel area, and the color filter panel can further include a blue color filter located on the base substrate in the third pixel area and in the light blocking area, and a transparent pattern located on the blue color filter in the third pixel area. The first photoluminescence pattern can include red quantum dots or red phosphor, and the second photoluminescence pattern can include green quantum dots or green phosphor. The first color filter can be a red color filter, and the second color filter can be a green color filter.

[0021] According to an example embodiment of the present application, a method of manufacturing a display apparatus is provided. The method includes forming a third color filter on a base substrate in a light blocking area and in a third pixel area, forming a first color filter on the base substrate in a first pixel area and forming a second color filter on the base substrate in a second pixel area, forming a first photoluminescence pattern on the first color filter, the first photoluminescence pattern being configured to convert a color of light by using photoluminescence, and forming a second photoluminescence pattern on the second color filter, the second photoluminescence pattern being configured to convert a color of light by using photoluminescence. The first photoluminescence pattern and the second photoluminescence pattern partially overlap each other in the light blocking area.

[0022] The first color filter and the second color filter can be spaced apart from each other in the light-blocking area.

[0023] The method can further include, after forming the second photoluminescent pattern, planarizing the protruding portion of the second photoluminescent pattern to form a planar portion.

[0024] The method can further include, before forming the first color filter and the second color filter, forming a first light-blocking pattern on the third color filter in the light-blocking area.

[0025] The method can further include, before forming the first photoluminescent pattern, forming a first insulating layer on the third color filter, the first color filter, and the second color filter, forming a transparent pattern on the first insulating layer in the third pixel area, forming a second insulating layer on the first photoluminescent pattern, the second photoluminescent pattern, and the transparent pattern, and forming a second light-blocking pattern on the second insulating layer in the light-blocking area.

[0026] A width of the first light-blocking pattern can be smaller than a width of the third color filter in the light-blocking area.

[0027] According to the exemplary embodiments of the present invention, because the first photoluminescent pattern and the second photoluminescent pattern and / or the first color filter and the second color filter are arranged to be partially overlapped with each other and to be in contact with each other in the light-blocking area, sufficient margin in a manufacturing process can be secured, and defects at edge portions of the first photoluminescent pattern or the second photoluminescent pattern can be prevented or mitigated.

[0028] In addition, even when the first photoluminescent pattern and the second photoluminescent pattern are overlapped with each other, mixing of different colors of light between adjacent pixels can be prevented or mitigated by the first light-blocking pattern, the second light-blocking pattern, and the third color filter in the light-blocking area.

[0029] In addition, the first color filter and the second color filter are spaced apart from each other in the light-blocking area to form a groove. Accordingly, even when the first photoluminescent pattern and the second photoluminescent pattern are partially overlapped with each other in the light-blocking area, a height of the protruding portion of the second photoluminescent pattern can be reduced. Accordingly, a distribution of a profile at a portion where the first photoluminescent pattern and the second photoluminescent pattern are overlapped with each other can be reduced. Accordingly, a process quality can be improved.

[0030] In addition, in the light blocking area, a protruding portion formed by the second photoluminescent pattern overlaid with the first photoluminescent pattern can be planarized by a planarization process such as a polishing process. Accordingly, it is possible to avoid deterioration in quality in a subsequent process due to excessive protrusion at a portion where the first photoluminescent pattern and the second photoluminescent pattern are overlaid (for example, when the color filter panel and the back panel are combined together, a gap margin is reduced due to the protrusion). Accordingly, it is possible to improve process quality.

[0031] It will be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the application as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0032] The foregoing and other aspects and features of the present application will become more apparent from the following detailed description, taken in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 is a cross-sectional view illustrating a color filter panel according to an exemplary embodiment of the present application;

[0034] Figure 2 is a cross-sectional view illustrating a color filter panel according to an exemplary embodiment of the present application;

[0035] Figure 3 is a cross-sectional view illustrating a color filter panel according to an exemplary embodiment of the present application;

[0036] Figure 4 is a schematic cross-sectional view illustrating a liquid crystal display apparatus including a color filter panel according to an embodiment of the present application;

[0037] Figure 5 is a schematic cross-sectional view illustrating an organic light emitting diode display apparatus including a color filter panel according to an embodiment of the present application;

[0038] Figures 6A to 6H is a cross-sectional view illustrating a method of manufacturing a color filter panel shown in Figure 1 ;

[0039] Figures 7A to 7C is a cross-sectional view illustrating a method of manufacturing a color filter panel shown in Figure 3 ;

[0040] Figure 8 is a block diagram illustrating an electronic device according to an example embodiment;

[0041] Figure 9A is a diagram illustrating an example in which the electronic device shown in Figure 8 is implemented as a television; and

[0042] Figure 9B is shown in FIG. 1. Figure 8 is shown in FIG. 1. DETAILED DESCRIPTION

[0043] It will be understood that when an element or layer is referred to as being "on" another element or layer, "connected to" or "coupled to" another element or layer, it can be directly on, directly connected to or directly coupled to the other element or layer or one or more intervening elements or layers can also be present. In contrast, when an element or layer is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. For example, when a first element is described as being "coupled" or "connected" to a second element, it can be directly coupled or connected to the second element, or intervening elements can be present. That is, for example, a first element described as being "coupled" or "connected" to a second element can be directly coupled or connected to the second element or can be indirectly connected or coupled to the second element through one or more intermediate elements. In some embodiments, "connected" can mean electrical connection, magnetic connection, electromagnetic connection, or any combination thereof.

[0044] The same reference numerals refer to the same elements throughout the specification. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. In addition, use of "may" indicates that one or more embodiments of the present application. When describing embodiments of the present application, the expression "at least one of (a), (b), and (c)" indicates that a list of three items consisting of (a), (b), and (c) or an equivalent expression can include any one of (a), (b), or (c) or any combination of such with others. In addition, the term "exemplary" is intended to mean an example or an illustration. As used herein, the term "uses" and variations thereof can be taken as a synonym for the term "utilizes" and variations thereof. As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation and not as terms of degree, unless otherwise indicated, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by those of ordinary skill in the art.

[0045] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments. In the drawings, the size of various elements, layers, etc., can be exaggerated for clarity.

[0046] For ease of description, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for describing an element's or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. The term "below" can encompass both the above and below orientations. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0047] The terminology used herein is for the purpose of describing specific example embodiments of the present application and is not intended to be limiting of the described example embodiments of the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", when used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0048] Hereinafter, embodiments of the present application will be explained in detail with reference to the accompanying drawings.

[0049] Figure 1 is a cross-sectional view illustrating a color filter panel according to an example embodiment of the present application.

[0050] Referring to Figure 1 , the color filter panel can include a base substrate 100, a first color filter RCF, a second color filter GCF, a third color filter BCF, a first light blocking pattern BM1, a first insulating layer 110, a first photoluminescence pattern RQD, a second photoluminescence pattern GQD, a transparent pattern W, a second insulating layer 120, and a second light blocking pattern BM2.

[0051] The base substrate 100 can include (or can be formed of) a transparent or non-transparent insulating material. For example, the base substrate 100 can include (or can be) a quartz substrate, a synthetic quartz substrate, a calcium fluoride substrate, a fluoride-doped quartz substrate, a soda-lime glass substrate, a non-alkali glass substrate, etc. In some embodiments, the base substrate 100 can include a flexible transparent material such as a flexible transparent resin material.

[0052] The base substrate 100 can include a first pixel area RP, a second pixel area GP, a third pixel area BP, and a light blocking area LB. For example, the first pixel area RP can be a red pixel area in which red light is emitted, the second pixel area GP can be a green pixel area in which green light is emitted, and the third pixel area BP can be a blue pixel area in which blue light is emitted. The light blocking area LB can be a non-light emitting area between the first pixel area RP and the second pixel area GP and between the second pixel area GP and the third pixel area BP.

[0053] A third color filter BCF can be disposed under the base substrate 100. The third color filter BCF can be a blue color filter. The third color filter BCF can be disposed in the third pixel area BP and in the light blocking area LB. Hereinafter, considering a manufacturing process, a downward direction is expressed as an upward direction for convenience of explanation.

[0054] A first light blocking pattern BM1 can be disposed under the third color filter BCF in the light blocking area LB. The first light blocking pattern BM1 can include a light blocking material. A width of the first light blocking pattern BM1 can be smaller than a width of the third color filter BCF in the light blocking area LB.

[0055] A first color filter RCF can be disposed under the base substrate 100 on which the third color filter BCF and the first light blocking pattern BM1 are disposed. The first color filter RCF can be a red color filter. The first color filter RCF can be disposed in the first pixel area RP.

[0056] A second color filter GCF can be disposed under the base substrate 100 on which the third color filter BCF, the first light blocking pattern BM1, and the first color filter RCF are disposed. The second color filter GCF can be a green color filter. The second color filter GCF can be disposed in the second pixel area GP.

[0057] The first color filter RCF and the second color filter GCF can be partially overlapped with each other in the light blocking area LB.

[0058] A first insulating layer 110 can be disposed under the first color filter RCF, the second color filter GCF, and the third color filter BCF. That is, the first insulating layer 110 can be between the first color filter RCF and the first photoluminescence pattern RQD, between the second color filter GCF and the second photoluminescence pattern GQD, and between the third color filter BCF and the transparent pattern W.

[0059] The first photoluminescence pattern RQD can be disposed under the first color filter RCF in the first pixel area RP. The first photoluminescence pattern RQD can convert a color of light by using photoluminescence. For example, the first photoluminescence pattern RQD can include red quantum dots (or red quantum dot particles) or a red phosphor configured to convert blue light into red light.

[0060] The second photoluminescence pattern GQD can be disposed under the second color filter GCF in the second pixel area GP. The second photoluminescence pattern GQD can convert a color of light by using photoluminescence. For example, the second photoluminescence pattern GQD can include green quantum dots (or green quantum dot particles) or a green phosphor configured to convert blue light into green light.

[0061] The red quantum dots or the green quantum dots can be materials having a nano-scale structure, and can include several hundred to several thousand atoms. Because the size of the quantum dots is relatively very small, a quantum confinement effect can occur. The quantum confinement effect can indicate that, when an object becomes smaller than a nano size, the energy band gap of the object (or element or compound) increases. When light having an energy higher than the energy of the band gap is incident to the quantum dots, the quantum dots can absorb the light and can emit second light having a certain wavelength (e.g., a specific wavelength) to return to the energy level of the ground state. The wavelength of the emitted second light can have a value corresponding to the band gap. By adjusting the size and composition of the quantum dots, the emission properties of the quantum dots can be controlled according to the quantum confinement effect.

[0062] The composition of the quantum dots is not limited to a specific composition, and any suitable composition can be used. For example, the quantum dots can be quantum dots of group II-VI elements, group III-V elements, group IV elements, or group IV-VI elements. The group II elements can be selected from the group consisting of at least one of zinc, cadmium, and mercury. The group III elements can be selected from the group consisting of at least one of aluminum, gallium, and indium. The group IV elements can be selected from the group consisting of at least one of silicon, germanium, tin, and lead. The group V elements can be selected from the group consisting of at least one of nitrogen, phosphorus, and arsenic. The group VI elements can be selected from the group consisting of at least one of sulfur, selenium, and tellurium.

[0063] The red phosphor can be one of (Ca,Sr,Ba)S, (Ca,Sr,Ba)2Si5N8, CaAlSiN3, CaMoO4, and Eu2Si5N8, but is not limited thereto.

[0064] The green phosphor can be one selected from the group consisting of yttrium aluminum garnet (YAG), (Ca,Sr,Ba)2SiO4, SrGa2S4, barium magnesium aluminate (BAM), α-SiAlON (alpha-SiAlON), β-SiAlON (beta-SiAlON), Ca3Sc2Si3O7, Sr4Al14O25, and (Sr,Ba)2Si5N8, but is not limited thereto.12 , Tb3Al5O 12 , BaSiO4, CaAlSiON, and (Sr 1-x Ba x )Si2O2N2, but is not limited thereto.

[0065] The transparent pattern W can be disposed under the third color filter BCF in the third pixel area BP. The transparent pattern W can include scattering particles. The scattering particles can be (or include) particles of TiO2, Al2O3, SiO2, or the like, and the size of the scattering particles can be similar to that of the red quantum dot particles or the green quantum dot particles.

[0066] The second insulating layer 120 can be disposed under the first photoluminescent pattern RQD, the second photoluminescent pattern GQD, and the transparent pattern W.

[0067] The second light-blocking pattern BM2 can be disposed under the second insulating layer 120 in the light-blocking area LB. The second light-blocking pattern BM2 can block light so that light of different colors does not mix between adjacent pixel areas.

[0068] According to the present embodiment, since the first photoluminescent pattern RQD and the second photoluminescent pattern GQD are arranged to partially overlap each other and to contact each other in the light-blocking area LB, sufficient margin in the manufacturing process can be ensured, and defects at edge portions of the first photoluminescent pattern RQD and / or the second photoluminescent pattern GQD can be prevented or mitigated.

[0069] In addition, even when portions where the first photoluminescent pattern RQD and the second photoluminescent pattern GQD overlap each other are formed, the color mixing problem of light of different colors between adjacent pixels can be prevented or mitigated by the first light-blocking pattern BM1, the second light-blocking pattern BM2, and the third color filter BCF in the light-blocking area LB.

[0070] Figure 2 is a cross-sectional view illustrating a color filter panel according to an exemplary embodiment of the present application.

[0071] Referring to Figure 2 , the color filter panel is substantially the same as the color filter panel shown in Figure 1 except for the area between the first color filter RCF and the second color filter GCF. Thus, a repeated description can be omitted.

[0072] The color filter panel can include a base substrate 100, a first color filter RCF, a second color filter GCF, a third color filter BCF, a first light blocking pattern BM1, a first insulating layer 110, a first photoluminescent pattern RQD, a second photoluminescent pattern GQD, a transparent pattern W, a second insulating layer 120, and a second light blocking pattern BM2.

[0073] The first color filter RCF and the second color filter GCF are spaced apart from each other at the light blocking area LB so that the first color filter RCF and the second color filter GCF are separated from each other. A groove can be formed in the light blocking area LB, and a portion of the first photoluminescent pattern RQD and a portion of the second photoluminescent pattern GQD can be disposed in the groove. In the embodiment shown in FIG. 1A, a portion of the first photoluminescent pattern RQD and a portion of the second photoluminescent pattern GQD are disposed in the groove. Figure 2 In the embodiment shown in FIG. 1A, a portion of the first photoluminescent pattern RQD and a portion of the second photoluminescent pattern GQD are disposed in the groove.

[0074] The first color filter RCF and the second color filter GCF are spaced apart from each other in the light blocking area LB to form the groove. Accordingly, even though the first photoluminescent pattern RQD and the second photoluminescent pattern GQD are partially overlapped with each other in the light blocking area LB, the height t1 of the protruding portion of the second photoluminescent pattern GQD can be reduced. Accordingly, the distribution of the profile at the portion where the first photoluminescent pattern RQD and the second photoluminescent pattern GQD are overlapped with each other can be reduced. Accordingly, the process quality can be improved.

[0075] Figure 3 is a cross-sectional view illustrating a color filter panel according to an exemplary embodiment of the present application.

[0076] Referring to Figure 3 , the color filter panel is substantially the same as the color filter panel shown in FIG. 1A, except for the flat portion FS of the second photoluminescent pattern GQD. Accordingly, a repeated description can be omitted. Figure 2

[0077] The color filter panel can include a base substrate 100, a first color filter RCF, a second color filter GCF, a third color filter BCF, a first light blocking pattern BM1, a first insulating layer 110, a first photoluminescent pattern RQD, a second photoluminescent pattern GQD, a transparent pattern W, a second insulating layer 120, and a second light blocking pattern BM2.

[0078] ​A portion of the second photoluminescence pattern GQD formed in the light blocking area LB can be superposed with the first photoluminescence pattern RQD (e.g., can be superposed with a portion of the first photoluminescence pattern RQD). Accordingly, a protruding portion can be formed at a location at which the second photoluminescence pattern GQD is superposed with the first photoluminescence pattern RQD. The protruding portion can be planarized by a planarization process such as a polishing process. Accordingly, the portion of the second photoluminescence pattern GQD formed in the light blocking area LB can include a planar portion FS that is planarized by the planarization process.

[0079] In the present embodiment, a planar portion FS is formed in the second photoluminescence pattern GQD similar to the structure in the embodiment shown in Figure 2 In the present embodiment, a planar portion FS is formed in the second photoluminescence pattern GQD similar to the structure in the embodiment shown in Figure 2 In the present embodiment, a planar portion FS is formed in the second photoluminescence pattern GQD similar to the structure in the embodiment shown in Figure 1 In the present embodiment, a planar portion FS is formed in the second photoluminescence pattern GQD similar to the structure in the embodiment shown in

[0080] Figure 4 is a schematic cross-sectional view illustrating a liquid crystal display apparatus including a color filter panel according to an embodiment of the present application.

[0081] Referring to Figure 4 , the display apparatus can include a backlight unit BLV and a display panel disposed on the backlight unit BLV.

[0082] The backlight unit BLV can emit blue light and can provide (e.g., provide the blue light) the same to the display panel.

[0083] The display panel can include a backplane panel 20 including a thin film transistor and a color filter panel 10 disposed on the backplane panel 20. The backplane panel 20 can have various suitable structures.

[0084] The color filter panel 10 can include a base substrate including a first pixel area, a second pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter disposed under the base substrate and disposed in the first pixel area; a second color filter disposed under the base substrate and disposed in the second pixel area; a first photoluminescence pattern disposed under the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence; a second photoluminescence pattern disposed under the second color filter in the second pixel area, configured to convert a color of light by using photoluminescence, and disposed in the light blocking area in partial superposition with the first photoluminescence pattern.

[0085] The display device may also include a liquid crystal layer disposed between the back panel 20 and the color filter panel 10. The liquid crystal layer may include liquid crystal molecules having optical anisotropy. The liquid crystal molecules may be driven by an electric field to transmit or block (e.g., selectively transmit or block) light passing through the liquid crystal layer to display an image.

[0086] In other words, the display device can be a photoluminescent liquid crystal display (LCD), and in this embodiment, the display device can be a photoluminescent quantum dot liquid crystal display (QD-LCD).

[0087] Figure 5 This is a schematic cross-sectional view illustrating an organic light-emitting diode display device including a color filter panel according to an embodiment of the present invention.

[0088] Reference Figure 5 The display device may include a back panel 30 and a color filter panel 10 on the back panel 30.

[0089] The backplane panel 30 can have various suitable structures including thin-film transistors.

[0090] The display device may also include an organic light-emitting diode (OLED) element disposed between the back panel 30 and the color filter panel 10. The OLED element may be an OLED configured to emit blue light.

[0091] In other words, the display device can be an organic light-emitting display device (OLED) that uses photoluminescence, and in the embodiments, the display device can be a quantum dot-organic light-emitting display device (QD-OLED) that uses photoluminescence.

[0092] Figures 6A to 6H It shows the manufacturing process. Figure 1 The diagram shows a cross-sectional view of the method for creating a color filter panel. In the following text, for ease of explanation, the downward direction is represented as the upward direction, taking into account the manufacturing process. For example, the third color filter BCF is formed on the substrate 100, instead of the statement that the third color filter BCF is formed under the substrate 100.

[0093] Reference Figure 6A The third color filter BCF can be formed on the substrate 100 in the light-blocking region LB and in the third pixel region BP.

[0094] Reference Figure 6B The first light-blocking pattern BM1 can be formed on the third color filter BCF in the light-blocking region LB.

[0095] Reference Figure 6CThe first color filter RCF can be formed on the base substrate 100 at the second pixel region GP and in the portion of the light-blocking region LB adjacent to the second pixel region GP, and on the first color filter RCF (e.g., partially on the first color filter RCF). For example, the first color filter RCF and the second color filter GCF can partially overlap with each other in the light-blocking region LB.

[0096] Referring to Figure 6D The second color filter GCF can be formed on the base substrate 100 at the second pixel region GP and in the portion of the light-blocking region LB adjacent to the second pixel region GP, and on the first color filter RCF (e.g., partially on the first color filter RCF). For example, the first color filter RCF and the second color filter GCF can partially overlap with each other in the light-blocking region LB.

[0097] Referring to Figure 6E The first insulating layer 110 can be formed on the third color filter BCF, the first color filter RCF, and the second color filter GCF. In some embodiments, the first insulating layer 110 can also be formed on a portion of the first light-blocking pattern BM1 (e.g., on a portion of the first light-blocking pattern BM1 that is not covered by the first color filter RCF or the second color filter GCF).

[0098] Referring to Figure 6F A transparent pattern W can be formed on the first insulating layer 110 in the third pixel region BP, and a first photoluminescent pattern RQD can be formed on the first insulating layer 110 in the first pixel region RP. The first photoluminescent pattern RQD can be formed in the portion of the light-blocking region LB adjacent to the first pixel region RP and in the first pixel region RP.

[0099] Referring to Figure 6G A second photoluminescent pattern GQD can be formed on the first insulating layer 110 in the second pixel region GP. The second photoluminescent pattern GQD can be formed in the second pixel region GP and in the portion of the light-blocking region LB adjacent to the second pixel region GP.

[0100] Thus, the first photoluminescent pattern RQD and the second photoluminescent pattern GQD can partially overlap in the light-blocking region LB. Similar approach can be used in the portion of the light-blocking region LB where the transparent pattern W and the second photoluminescent pattern GQD partially overlap.

[0101] Referring to Figure 6H A second insulating layer 120 can be formed on the first photoluminescent pattern RQD, the second photoluminescent pattern GQD, and the transparent pattern W.

[0102] A second light-blocking pattern BM2 can be formed on the second insulating layer 120 in the light-blocking region LB. Thus, a color filter panel is manufactured.

[0103] Figures 7A to 7C is a cross-sectional view showing a method of manufacturing a color filter panel shown in Figure 3 is substantially the same as the method of manufacturing a color filter panel shown in Figures 7A to 7C is substantially the same as the method of manufacturing a color filter panel shown in Figures 6A to 6H Thus, a repetitive description can be omitted.

[0104] Referring to Figure 7A A third color filter BCF can be formed on the base substrate 100 in the light-blocking region LB and in the third pixel region BP. A first light-blocking pattern BM1 can be formed in the light-blocking region LB. A second color filter GCF can be formed in the second pixel region GP and in a portion of the light-blocking region LB adjacent to the second pixel region GP. A first color filter RCF can be formed in the first pixel region RP and in a portion of the light-blocking region LB adjacent to the first pixel region RP. A first insulating layer 110 can be formed on the first color filter RCF, the second color filter GCF, and the third color filter BCF (in some embodiments, on a portion of the first light-blocking pattern BM1). A transparent pattern W can be formed in the third pixel region BP, and a first photoluminescent pattern RQD can be formed in the first pixel region RP. A second photoluminescent pattern GQD can be formed in the second pixel region GP. The first photoluminescent pattern RQD and the second photoluminescent pattern GQD can be partially superimposed in the light-blocking region LB.

[0105] In the present embodiment, the first color filter RCF and the second color filter GCF can be formed to be spaced apart from each other in the light-blocking region LB. The first color filter RCF and the second color filter GCF can form a recess in the light-blocking region LB.

[0106] Referring to Figure 7B The protruding portions of the second photoluminescent pattern GQD can be planarized by using a polishing process or the like. For example, the protruding portions of the second photoluminescent pattern GQD can be planarized to form a planar portion FS. For example, a chemical mechanical polishing (CMP) process using a slurry can be employed.

[0107] Referring to Figure 7C A second insulating layer 120 can be formed on the first photoluminescent pattern RQD and the second photoluminescent pattern GQD and on the transparent pattern W. A second light-blocking pattern BM2 can be formed in the light-blocking region LB. Thus, a color filter panel is manufactured.

[0108] Figure 8 is a block diagram illustrating an electronic device according to an example embodiment. Figure 9A is a diagram illustrating an example in which Figure 8 the electronic device illustrated in FIG. 1 is implemented as a television, Figure 9B is a diagram illustrating an example in which Figure 8 the electronic device illustrated in FIG. 1 is implemented as a smart phone.

[0109] Referring to Figures 8 to 9B , the electronic device 500 can include a processor 510, a memory device 520, a storage device 530, an input / output (I / O) device 540, a power supply 550, and a display device 560. The display device 560 can correspond to the display apparatus illustrated in Figure 4 or Figure 5 . Further, the electronic device 500 can further include a plurality of ports for communication with a video card, a sound card, a memory card, a universal serial bus (USB) device, other electronic devices, etc. In an example embodiment, as illustrated in Figure 9A , the electronic device 500 can be implemented as a television. In another example embodiment, as illustrated in Figure 9B , the electronic device 500 can be implemented as a smart phone. However, the electronic device 500 is not limited thereto. For example, the electronic device 500 can be implemented as a cellular phone, a video phone, a smart pad, a smart watch, a tablet PC, a vehicle navigation system, a computer monitor, a laptop computer, a head-mounted display (HMD), etc.

[0110] The processor 510 can perform various computing functions. The processor 510 can be a microprocessor, a central processing unit (CPU), an application processor (AP), etc. The processor 510 can be coupled to other components via an address bus, a control bus, a data bus, etc. Also, the processor 510 can be coupled to an extension bus such as a peripheral component interconnect (PCI) bus. The memory device 520 can store data for the operation of the electronic device 500. For example, the memory device 520 can include at least one non-volatile memory device such as an erasable programmable read-only memory (EPROM) device, an electrically erasable programmable read-only memory (EEPROM) device, a flash memory device, a phase-change random access memory (PRAM) device, a resistive random access memory (RRAM) device, a nano floating gate memory (NFGM) device, a polymer random access memory (PoRAM) device, a magnetic random access memory (MRAM) device, a ferroelectric random access memory (FRAM) device, etc., and / or at least one volatile memory device such as a dynamic random access memory (DRAM) device, a static random access memory (SRAM) device, a mobile DRAM device, etc. The storage device 530 can include a solid state drive (SSD) device, a hard disk drive (HDD) device, a CD-ROM device, etc. The I / O device 540 can include an input device such as a keypad, a keyboard, a mouse device, a touchpad, a touch screen, etc., and an output device such as a printer, a speaker, etc. The power supply 550 can provide power for the operation of the electronic device 500.

[0111] The display device 560 can be coupled to other components via a bus or other suitable communication link. In some example embodiments, the display device 560 can be included in the I / O device 540 (e.g., can be integrated with the I / O device 540). As described above, the display device 560 can include a color filter panel. Because the first photoluminescent pattern and the second photoluminescent pattern and / or the color filter are arranged to partially overlap each other and to contact each other in the light-blocking region, sufficient margin in the manufacturing process can be ensured, and defects at edge portions of the first photoluminescent pattern or the second photoluminescent pattern can be prevented or mitigated.

[0112] In addition, even when portions of the first photoluminescent pattern and the second photoluminescent pattern overlap each other, the problem of mixing different colors of light between adjacent pixels can be prevented (or mitigated) by the first light-blocking pattern, the second light-blocking pattern, and the third color filter in the light-blocking region.

[0113] In addition, the first color filter and the second color filter are spaced apart from each other in the light-blocking area to form a groove. Accordingly, even when the first photoluminescent pattern and the second photoluminescent pattern are partially overlapped in the light-blocking area, the height of the protruding portion of the second photoluminescent pattern can be reduced. Accordingly, the distribution of the profile at the portion where the first photoluminescent pattern and the second photoluminescent pattern are overlapped can be reduced. Accordingly, the process quality can be improved.

[0114] The present application can be applied to an organic light emitting display device and various suitable electronic devices including the same. For example, the present application can be applied to a mobile phone, a smart phone, a video phone, a smart pad, a smart watch, a tablet PC, a vehicle navigation system, a television, a computer monitor, a notebook computer, etc.

[0115] The foregoing is a summary of the present application and is not to be construed as limiting the present application. Although several exemplary embodiments of the present application have been described, it will be readily apparent to those skilled in the art that many modifications can be made thereto without departing from the novel aspects and features of the present application. Accordingly, all such modifications are intended to be included within the scope of the present application as defined in the claims and the full range of equivalents thereof. It is therefore to be understood that the foregoing is a description of the present application rather than a limitation as such can be made thereto without departing from the scope of the present application. The present application is defined by the following claims and their equivalents.

Claims

1. A color filter panel comprising: a base substrate having a first pixel area, a second pixel area, a third pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a third color filter on the base substrate in the third pixel area and in the light blocking area; a first light blocking pattern on the third color filter in the light blocking area; a first photoluminescence pattern on the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence; a second photoluminescence pattern on the second color filter in the second pixel area and configured to convert a color of light by using photoluminescence, the second photoluminescence pattern partially overlapping the first photoluminescence pattern in the light blocking area and on the first light blocking pattern; and a second light blocking pattern on a portion of the second photoluminescence pattern overlapping the first photoluminescence pattern in the light blocking area, wherein the first color filter and the second color filter are spaced apart from each other in the light blocking area, wherein the first color filter and the second color filter form a groove in the light blocking area, and wherein a portion of the first photoluminescence pattern is in the groove.

2. The color filter panel according to claim 1, wherein the first photoluminescence pattern comprises red quantum dots or red phosphor, wherein the second photoluminescence pattern comprises green quantum dots or green phosphor, and wherein the first color filter is a red color filter and the second color filter is a green color filter.

3. The color filter panel according to claim 2, wherein the third color filter is a blue color filter.

4. The color filter panel according to claim 3, wherein the color filter panel further comprises: a transparent pattern on the blue color filter in the third pixel area; and a first insulating layer between the first color filter and the first photoluminescence pattern, between the second color filter and the second photoluminescence pattern, and between the blue color filter and the transparent pattern.

5. The color filter panel according to claim 4, wherein, in the light blocking area between the third pixel area and the second pixel area, the transparent pattern partially overlaps and partially contacts the second photoluminescence pattern. 6.The color filter panel of claim 3, wherein, a width of the first light blocking pattern is smaller than a width of the blue color filter in the light blocking area.

7. The color filter panel according to claim 1, wherein the color filter panel further comprises: a second insulating layer on the first photoluminescence pattern and the second photoluminescence pattern, wherein the second light blocking pattern is on the second insulating layer, and wherein a portion of the second photoluminescence pattern overlapping the second light blocking pattern has a flat portion that is flattened by a planarization process.

8. The color filter panel according to claim 1, wherein a portion of the second photoluminescence pattern overlapping the groove in the light blocking area has a flat portion that is flattened by a planarization process. 9.A display apparatus comprising: A backplane panel including thin film transistors; and A color filter panel on the backplane panel, the color filter panel including: a base substrate having a first pixel area, a second pixel area, a third pixel area, and a light blocking area between the first pixel area and the second pixel area; a first color filter on the base substrate in the first pixel area; a second color filter on the base substrate in the second pixel area; a third color filter on the base substrate in the third pixel area and in the light blocking area; a first photoluminescent pattern on the first color filter in the first pixel area and configured to convert a color of light by using photoluminescence; a second photoluminescent pattern on the second color filter in the second pixel area and configured to convert a color of light by using photoluminescence, the second photoluminescent pattern partially overlapping the first photoluminescent pattern in the light blocking area and on a first light blocking pattern; and a second light blocking pattern on the second photoluminescent pattern in the light blocking area where the second photoluminescent pattern overlaps the first photoluminescent pattern, wherein the first color filter and the second color filter are spaced apart from each other in the light blocking area, wherein the first color filter and the second color filter form a groove in the light blocking area, and wherein a portion of the first photoluminescent pattern is in the groove.

10. The display device of claim 9, wherein, The backplane panel further includes an organic light emitting element configured to emit blue light to the first pixel area and the second pixel area.

11. The display device of claim 9, further comprising: a liquid crystal layer between the backplane panel and the color filter panel; and a backlight unit under the backplane panel and configured to emit blue light. The third color filter is a blue color filter, 12. The display device of claim 9, wherein, wherein the color filter panel further includes a transparent pattern on the blue color filter in the third pixel area, wherein the first photoluminescent pattern includes red quantum dots or red phosphor, wherein the second photoluminescent pattern includes green quantum dots or green phosphor, and wherein the first color filter is a red color filter and the second color filter is a green color filter. ​

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