Display device, method of manufacturing display device, and electronic device
By setting a light-blocking support structure in the display device to form an independent microcavity structure, the problems of brightness error and light leakage are solved, the display effect is improved and the cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN LAIBAO HI TECH
- Filing Date
- 2026-03-25
- Publication Date
- 2026-06-16
AI Technical Summary
In existing display devices, insufficient light-blocking properties of the barrier and non-tight bonding of the filter blocks lead to pixel brightness errors and light leakage, affecting the display effect.
A light-blocking support structure is used to surround the color filter unit, forming an independent microcavity structure. The projection of the light-blocking support structure covers or abuts the adjacent area to prevent light from passing through or leaking out.
It effectively avoids brightness errors and light leakage between pixel units, improves the color contrast and display effect of the display device, and saves manufacturing process steps, thus reducing costs.
Smart Images
Figure CN122218980A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of displays, and more particularly to a display device, a method for manufacturing the display device, and an electronic device. Background Technology
[0002] For display devices, such as liquid crystal displays (LCDs) or electronic paper (e-paper) displays, the internal components are mostly sealed by bonding a top substrate and a bottom substrate, thus achieving the assembly of the display device.
[0003] In related technologies, display devices have multiple pixels, each containing a color filter. Each pixel emits or reflects light through a medium between a top and bottom substrate, allowing light to pass through the color filter and display the corresponding color. Adjacent pixels are separated by a barrier to isolate the medium within each pixel. If the barrier is not sufficiently light-blocking, light from one pixel can penetrate to another, causing an error in the pixel's brightness. Furthermore, light leakage can occur due to the color filter not being tightly fitted to the barrier, resulting in a decrease in the display device's color contrast and thus affecting its display performance. Summary of the Invention
[0004] This application provides a display device, a method for manufacturing a display device, and an electronic device, which aim to avoid brightness errors in pixel units of the display device and ensure the color contrast of the display device, thereby improving the display effect of the display device.
[0005] In a first aspect, this application provides a display device, the display device comprising: A first substrate, the surface of the first substrate includes a plurality of first regions and a plurality of second regions, the first regions being adjacent to the second regions, and the first regions being provided with color filter units; The second substrate is disposed opposite to the first substrate; A flow medium disposed between the first substrate and the second substrate; A light-blocking support structure is located between the first substrate and the second substrate and is arranged around the color filter unit, and the projection of one end of the light-blocking support structure on the first substrate completely covers the second area of the first substrate. Wherein, the color filter unit adjacent to the light-blocking support structure overlaps with the projection portion; and / or the color filter unit adjacent to the light-blocking support structure abuts against the periphery of the light-blocking support structure.
[0006] Secondly, this application also provides a method for manufacturing a display device, the method comprising: Provide a first substrate; A first photoresist is coated in a first region on the surface of the first substrate, and the first substrate coated with the first photoresist is exposed, developed and baked to form the color filter unit on the surface of the first substrate. A conductive layer is formed on the surface of the color filter unit and in a second region on the surface of the first substrate. A second photoresist is coated on the conductive layer surface corresponding to the second region, and the first substrate coated with the second photoresist is exposed, developed and baked to obtain a light-blocking support structure to form a dam structure. A flow medium is filled into the cofferdam structure, and the first substrate and the second substrate are bonded together after the flow medium filling is completed to obtain a display device.
[0007] Thirdly, this application also provides an electronic device, which includes a display device as provided in the first aspect, or a display device prepared by the preparation method provided in the second aspect.
[0008] This application provides a display device, a method for manufacturing the display device, and an electronic device. The display device further includes a first substrate, a second substrate disposed opposite to the first substrate, a flow medium, and a light-blocking support structure. The surface of the first substrate includes a plurality of first regions and a plurality of second regions, the first regions being adjacent to the second regions. A color filter unit is provided in the first region. The flow medium is disposed between the first substrate and the second substrate. The light-blocking support structure is also located between the first substrate and the second substrate and is disposed around the color filter unit, so that the space where the color filter unit is located forms an independent microcavity structure under the enclosure of the light-blocking support structure, and the microcavity structure is filled with the flow medium to form a pixel unit. By using a light-blocking support structure as a wall around the pixel unit, it is possible to prevent light from being transmitted from one pixel unit to another and exiting through the color filter unit of the other pixel unit, thus avoiding pixel unit brightness errors. Furthermore, the projection of one end of the light-blocking support structure onto the second area of the first substrate covers the first substrate, and the color filter unit of the adjacent light-blocking support structure overlaps with the projection portion of the light-blocking support structure, and / or the color filter unit of the adjacent light-blocking support structure abuts against the periphery of the light-blocking support structure. This prevents light leakage caused by light escaping through the gap between the color filter unit and the light-blocking support structure, thereby avoiding a decrease in color contrast due to light leakage and improving the display effect of the display device. Attached Figure Description
[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0010] Figure 1 A schematic diagram illustrating a scenario where a first substrate and a second substrate are bonded together, providing information for related technologies; Figure 2 A cross-sectional structural schematic diagram of a display device provided for related technologies; Figure 3 A top view of a display device provided for an embodiment of this application; Figure 4 A cross-sectional structural schematic diagram of a display device provided for an embodiment of this application; Figure 5 This is a cross-sectional structural schematic diagram of another display device provided in an embodiment of this application; Figure 6 This is a cross-sectional structural schematic diagram of another display device provided in an embodiment of this application; Figure 7 This is a cross-sectional structural schematic diagram of another display device provided in an embodiment of this application; Figure 8 A flowchart illustrating the steps of a method for manufacturing a display device according to an embodiment of this application; Figure 9 This is a schematic block diagram of the structure of an electronic device provided in an embodiment of this application.
[0011] Figure label: 100. Display device; 200. Display area; 300. Bezel area; 10. First substrate; 20. Second substrate; 30. Flow medium; 40. Light-blocking support structure; 50. Color filter unit; 60. Conductive layer; 1000. Electronic devices. Detailed Implementation
[0012] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0013] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.
[0014] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0015] It should be understood that, in order to clearly describe the technical solutions of the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first callback function and the second callback function are only used to distinguish different callback functions and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" do not necessarily mean they must be different.
[0016] It should also be understood that the term "and / or" as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0017] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0018] like Figure 1 As shown, in related technologies, most display devices typically apply bezel adhesive to the bezel area and use the bezel adhesive to directly bond the first substrate and the second substrate, thereby achieving adhesion and fixing the first substrate and the second substrate into a box. For example... Figure 2 As shown, within the display area of the box, support pillars are installed to support the first and second substrates, maintaining the thickness of the display device and thus ensuring its display effect. Figure 2It is understood that the support pillar is generally attached to the light-blocking block 102 on the first substrate and surrounds the light-filtering block 101, thereby forming the pixel of the display device; the support pillar also serves to isolate the flow medium between different pixels. Therefore, when the light-blocking property of the support pillar is insufficient, the light reflected by the medium in the pixel will pass through the support pillar and be emitted from other pixels, resulting in an error in the brightness of the pixel; and in other cases, the light-filtering block 101 and the light-blocking block 102 are not tightly attached, and the light in the pixel can be emitted from the gap between the light-filtering block 101 and the light-blocking block 102, resulting in light leakage, which in turn reduces the color contrast of the display device and thus affects the display effect of the display device.
[0019] To address the aforementioned issues, this application provides a display device that, by providing a light-blocking support structure, prevents light from escaping from one pixel unit to another, thereby avoiding brightness errors. Furthermore, the color filter unit of an adjacent light-blocking support structure overlaps with the projection portion of one end of the light-blocking support structure onto the first substrate, and / or the color filter unit of an adjacent light-blocking support structure overlaps with the periphery of the light-blocking support structure, ensuring that light can only pass through the color filter unit or be blocked by the light-blocking support structure, thus preventing light leakage and improving the color contrast of the display device. Since the light-blocking support structure alone can block emitted light, there is no need to provide a corresponding light-blocking block on the first substrate, saving on the manufacturing process of the display device and thus reducing its cost.
[0020] For example, the display device provided in this application can be a liquid crystal display (LCD), a micro electric-chamber display (MED), an electrophoretic display (EPD), a display electronic slurry (DES), or other display devices. As long as the display device in the package has support pillars for supporting the first substrate and the second substrate, it can be the display device provided in this application. No specific limitation is made here.
[0021] When the display device is a liquid crystal display (LCD), the flowing medium includes liquid crystal, a special substance that exists between a liquid and a crystalline state. It is primarily used to control light refraction and display images. In this case, the flowing medium mainly changes the molecular arrangement through electric current stimulation, thereby controlling the transmission or reflection of light to create an image display effect. When current passes through, the liquid crystal molecules rearrange, causing light to refract or deflect, ultimately presenting images with different grayscale levels.
[0022] The following description uses a microcavity electronic paper display as an example to introduce the display device, the manufacturing method of the display device, and the electronic device provided in this application.
[0023] Electronic paper (ePaper) is a novel reflective display technology. Its core technology uses electronic ink to display images and text, achieving a display effect close to traditional paper. It boasts unique advantages such as paper-like display, low power consumption, and eye-friendliness. Major applications of ePaper include e-book readers, electronic tags, educational equipment, smart wearable devices, IoT displays, and advertising and information displays. With continuous technological advancements, the application scenarios of ePaper are expected to expand further, making it one of the important future development directions for display technology.
[0024] Microcavity electronic paper displays (MEDs) primarily involve creating a dam structure on the surface of thin-film transistors (TFTs) to surround each pixel unit. An electronic paste containing imaging particles, such as black and white particles, is then used to fill the fluid medium. Finally, the display is encapsulated on an upper substrate. The cavity formed by the dam structure in the MED is called the microcavity structure. MEDs can control the color changes of the particles in the electronic paste using an electric field, achieving high contrast and high reflectivity through light reflection from the particles.
[0025] Please see Figure 3 and Figure 4 , Figure 3 A top view of a display device 100 provided for an embodiment of this application. Figure 4 This is a cross-sectional structural schematic diagram of a display device 100 provided for an embodiment of this application.
[0026] like Figure 3 As shown, the display device 100 includes a display area 200 and a border area 300 located around the display area 200. The display area 200 can be an area used to implement display functions. It should be noted that... Figure 3 The display area 200 shown is capable of displaying color. The border area 300 is located around the periphery of the display area 200; that is, the border area 300 is generally the edge area of the display device 100. For example... Figure 4 As shown, the display device 100 also includes a first substrate 10, a second substrate 20, a flow medium 30, and a light-blocking support structure 40.
[0027] For example, the flow medium 30 is disposed between the first substrate 10 and the second substrate 20. Specifically, the flow medium 30 may include liquid crystal or conductive particles, depending on the type of display device 100.
[0028] In the case where the display device 100 is a microcavity electronic paper display, the flow medium 30 includes a filling liquid and conductive particles, and the conductive particles may include black particles and white particles with different electrical properties.
[0029] Specifically, the flow medium 30 is disposed between the sealed cavity formed by the first substrate 10 and the second substrate 20, and the sealed cavity contains a filling liquid and conductive particles distributed in the filling liquid.
[0030] For example, black and white particles can have different electrical charges. For instance, white particles may carry a negative charge and black particles may carry a positive charge; or white particles may carry a positive charge and black particles may carry a negative charge. No specific limitation is made here.
[0031] Black and white particles can undergo electrophoresis under voltage, controlling their positional distribution within the flow medium 30. This allows for the formation of different grayscale levels, and through the provided color filter unit, colors of varying brightness can be created on the screen surface. Utilizing the principle of attraction between positive and negative particles, when an electric field is applied, corresponding black or white particles move to the top of the flow medium 30, allowing the user to see the corresponding color within that area (pixel unit). Applying different voltages to the same flow medium 30 results in a half-black, half-white appearance at the top, allowing the user to see colors of varying brightness within that area (pixel unit).
[0032] Furthermore, when the display device 100 is a microcavity electronic paper display, the second substrate 20 can also be referred to as an array substrate. The second substrate 20 has a plurality of pixel units on the surface facing the first substrate 10. The light-blocking support structure 40 is disposed around the pixel units to support and block the electronic paste that serves as the flow medium 30, so that the electronic paste corresponding to different pixel units is relatively independent.
[0033] For example, the array substrate can be a driving board for driving the movement of conductive particles in the electronic paste. The first substrate 10 and the second substrate 20 can be correspondingly arranged in a first direction, which can be the perpendicular direction of the first substrate 10 and the second substrate 20, that is, the thickness direction of the display device 100.
[0034] In some embodiments, the side of the first substrate 10 facing away from the second substrate 20 serves as the display surface of the display device 100, and the user can see the content presented by the display device 100 using the flowing medium 30 in the display area 200 through the first substrate 10.
[0035] In other embodiments, the surface of the second substrate 20 (array substrate) facing away from the first substrate 10 can also serve as the display surface of the display device 100. In the embodiments of this application, the pixel unit needs to be provided with a light-transmitting part so that the reflected light can be transmitted through the light-transmitting part.
[0036] Specifically, the light-transmitting portion refers to the effective area in the array substrate through which light can pass. The ratio of the area of the light-transmitting portion to the area of the pixel unit is the ratio of the area of the effective area in the array substrate through which light can pass to the area of the entire pixel unit area.
[0037] The area of each pixel unit generally includes a light-transmitting area and a non-light-transmitting area. The non-light-transmitting area is generally occupied by devices such as circuits, thin-film transistors, and storage capacitors.
[0038] To ensure the display effect of the display device 100, the ratio of the area of the light-transmitting portion to the area of the pixel unit is at least greater than 50%, and is generally 70%-80%. In the display device 100, it is generally necessary to maximize the aperture ratio to maximize the area through which light passes, thereby improving the brightness and energy efficiency of the display device 100. Therefore, in this embodiment, while ensuring that the circuitry and chip select signal (CS) meet the requirements, the ratio of the area of the light-transmitting portion to the area of the pixel unit can be increased as much as possible, thereby effectively improving the brightness and energy efficiency of the display device 100. For example, the shape of the light-transmitting portion includes square, rectangular, circular, and hexagonal shapes, etc., and is not specifically limited here.
[0039] Please continue reading. Figure 4 The surface of the first substrate 10 includes multiple first regions and multiple second regions, with the first regions adjacent to the second regions. A color filter unit 50 is provided in the first region. A light-blocking support structure 40 is located between the first substrate 10 and the second substrate 20, and is disposed around the color filter unit 50. This allows the light-blocking support to form a microcavity around the color filter unit 50 between the first substrate 10 and the second substrate 20. When filled with a flow medium 30, the microcavity can form pixel units to present a pattern. Specifically, light inside the pixel unit passes through the color filter unit 50 and exits, enabling the pixel unit to display the same color as the color filter unit 50 contained within it, thereby forming a colored pattern.
[0040] Specifically, the projection of the end of the light-blocking support structure 40 near the first substrate 10 on the first substrate 10 completely covers the second region of the first substrate 10. As a barrier for each pixel unit, the light-blocking support structure 40 enables each pixel unit to be relatively independent. Furthermore, due to the good light-blocking properties of the light-blocking support structure 40, light from each pixel unit cannot pass through the light-blocking support structure 40 and be emitted into other pixel units, thereby avoiding the problem of brightness error in pixel units caused by light emitted from another pixel unit in related technologies. The projection of the light-blocking support structure 40 adjacent to the color filter unit 50 at least partially overlaps with the light-blocking support structure 40; and / or the periphery of the light-blocking support structure 40 abuts against the adjacent color filter unit 50, thereby avoiding gaps between the light-blocking support structure 40 and the color filter unit 50. Light in the pixel unit can only hit the light-blocking support structure 40, or be emitted or reflected by the color filter unit 50; thus avoiding the light leakage problem caused by light in the pixel unit being emitted through the gaps between the color filter units 50 in the related art, thereby improving the color contrast of the display device 100 and improving the display effect of the display device 100.
[0041] The end of the light-blocking support structure 40 closest to the first substrate 10 can be directly disposed on the second region of the surface of the first substrate 10. Further, the projection of the end of the light-blocking support structure 40 closest to the first substrate 10 onto the first substrate 10 completely covers the second region; alternatively, the end of the support structure 40 closest to the first substrate 10 can be partially disposed on the surface of the color filter unit 50, without limitation. The end of the light-blocking support structure 40 furthest from the first substrate 10 is used to adhere to the second substrate 20. The light-blocking support structure 40 provides support for the first substrate 10 and the second substrate 20, thereby ensuring the thickness of the display device 100 formed in a fixed assembly, and thus ensuring the display effect of the display device 100.
[0042] Please see Figure 5 , Figure 5 This is a cross-sectional structural schematic diagram of another display device 100 provided in an embodiment of this application.
[0043] In other implementations, such as Figure 5 As shown, the display device 100 also includes a conductive layer 60. Specifically, the conductive layer 60 is disposed on the surface of the color filter unit 50 away from the first substrate 10 and on the surface of the first substrate 10 in the second region; when the conductive layer 60 is provided, the light-blocking support structure 40 is disposed on the surface of the conductive layer 60 located in the second region to support the first substrate 10 and the second substrate 20 after they are bonded together.
[0044] In some embodiments, the overlapping area of the projections of the color filter unit 50 and the light-blocking support structure 40 onto the first substrate 10 is less than or equal to a preset area threshold.
[0045] For example, the width of the light-blocking support structure 40 should not be too wide, so as to avoid the light-blocking support structure 40 being too wide and affecting the light emission area of the color filter unit 50, resulting in less light emitted by the pixel unit and thus insufficient brightness of the pixel unit.
[0046] Please see Figure 6 , Figure 6 This is a cross-sectional structural schematic diagram of another display device 100 provided in an embodiment of this application.
[0047] Figure 6 This illustrates a case where the light-blocking support structure 40 is too wide, specifically, the overlapping area of the projections of the color filter unit 50 and the light-blocking support structure 40 onto the first substrate 10 exceeds a preset area threshold. Figure 6 It can be seen that the light-blocking support structure 40 occupies part of the area of the color filter unit 50, and the light-blocking support structure 40 reduces the area of the color filter unit 50 that can emit light, thereby affecting the brightness of the pixel unit.
[0048] Please see Figure 7 , Figure 7 This is a cross-sectional structural schematic diagram of another display device 100 provided in an embodiment of this application.
[0049] Figure 7 This illustrates a case where the light-blocking support structure 40 is too narrow, meaning that the projection of the end of the light-blocking support structure 40 closest to the first substrate 10 onto the first substrate 10 fails to completely cover the second area. Figure 7 It is known that in this case, there is a gap between the light-blocking support structure 40 and the adjacent color filter, which causes light in the microcavity to pass through the gap and emit light, resulting in light leakage and thus reducing the color contrast of the display device 100.
[0050] Based on this, by setting a reasonable width for the light-blocking support structure 40, that is, the projection of the end of the light-blocking support structure 40 near the first substrate 10 on the first substrate 10 completely covers the area, and the overlapping area of the projection of the light-blocking support structure 40 on the first substrate 10 and the adjacent color filter unit 50 is less than or equal to a preset area threshold, the light emission area of the color filter unit 50 in the pixel unit is guaranteed, thereby ensuring the brightness of the pixel unit.
[0051] It should be noted that those skilled in the art can adjust the size of the preset area threshold according to the size of the color filter unit 50, and this application does not limit the specific value of the preset area threshold.
[0052] In some embodiments, the first thickness of the first substrate 10 in the first region is greater than the second thickness of the first substrate 10 in the second region, and the distance between the end of the light-blocking support structure 40 near the first substrate 10 and the first substrate 10 is less than the first thickness.
[0053] For example, the first thickness of the first substrate 10 in the first region is used to indicate the sum of the thickness of the first substrate 10 and the thickness of the color filter unit 50 disposed in the first region; and since no related components are disposed in the second region of the first substrate 10, the second thickness of the first substrate 10 in the second region is actually the thickness of the first substrate 10. When the distance between the first end of the light-blocking support structure 40 and the first substrate 10 is less than the first thickness, it is beneficial to reduce the distance between the first substrate 10 and the second substrate 20 after bonding, thereby facilitating the fabrication of a thinner display device 100; and even if the color filter unit 50 located in the second region has a certain thickness, the color filter unit 50 and the second substrate 20 still have a certain gap, so that a microcavity structure can be formed in this gap and filled with the flow medium 30.
[0054] In other embodiments, a conductive layer 60 is provided on the surface of the color filter unit 50 and the surface of the second region of the first substrate 10, wherein the thickness of the conductive layer 60 is uniform. Therefore, in this embodiment, the first thickness of the first substrate 10 in the first region is used to indicate the sum of the thicknesses of the first substrate 10, the color filter unit 50 in that region, and the conductive layer 60 on the surface of the color filter unit 50; while the second thickness of the first substrate 10 in the second region is used to indicate the sum of the thicknesses of the first substrate 10 and the conductive layer 60. In this case, the light-blocking support structure 40 is not directly disposed on the surface of the first substrate 10, so there is a certain distance between the end of the light-blocking support structure 40 close to the first substrate 10 and the first substrate 10, but this distance can still be less than the first thickness, so as to facilitate the fabrication of a thinner display device 100.
[0055] In other embodiments, to avoid light leakage, the light-blocking support structure 40 may also be disposed on the surface of the color filter unit 50 and correspond to the second region; in this case, the light-blocking support structure 40 is partially overlapped on the surface of the color filter unit 50, and the remaining part corresponds to the second region. This arrangement will make the distance between the end of the light-blocking support structure 40 close to the first substrate 10 and the first substrate 10 equal to the thickness of the first region.
[0056] In some embodiments, the surface area of the color filter unit 50 near the first surface of the first substrate 10 is greater than the surface area of the color filter unit 50 away from the second surface of the first substrate 10.
[0057] For example, please continue reading Figure 5With the surface area of the first surface of the color filter unit 50 being greater than that of the second surface, the cross-sectional shape of the color filter unit 50 in the direction perpendicular to the first substrate 10 can be trapezoidal. Therefore, the distance between two adjacent color filter units 50 on the side closer to the first substrate 10 (i.e., the side where the longer base of the trapezoid is located) is shorter than the distance between the side farther from the first substrate 10 (i.e., the side where the shorter base of the trapezoid is located). Thus, when the light-blocking support structure 40 is provided, the distance between the light-blocking support structure 40 and the first substrate 10 at the end closer to the first substrate 10 is closer than the distance between the color filter unit 50 and the first substrate 10 on the side farther from the first substrate 10. In other words, the position of the light-blocking support structure 40 at the end closer to the first substrate 10 can be located at the waist of the trapezoid corresponding to the color filter unit 50, which is beneficial for manufacturing a thinner display device 100. Furthermore, the projection portion of the light-blocking support structure 40 on the first substrate 10 near the first substrate 10 overlaps with the color filter unit 50, so that the light in the pixel unit is emitted or reflected by the color filter unit 50, avoiding light leakage, thereby ensuring color contrast and improving the display effect of the display device 100.
[0058] For example, the two adjacent color filter units 50 are closer to the first substrate 10. One end of the light-blocking support structure 40 can be directly disposed on the second region of the first substrate 10. At this time, the periphery of the light-blocking support structure 40 or the position on the second region needs to abut against the adjacent color filter unit 50, so as to avoid gaps between the light-blocking support structure 40 and the color filter unit 50.
[0059] For example, the light-blocking support structure 40 does not need to be disposed on the second region; it can be disposed corresponding to the second region. The end of the light-blocking support structure 40 near the first substrate 10 is located at the waist position of the color filter unit 50. In this configuration, the projection of the light-blocking support structure 40 onto the first substrate 10 overlaps with the color filter unit 50. When the end of the light-blocking support structure 40 near the first substrate 10 is located at the waist position of the color filter unit 50, a space is formed between the end of the light-blocking support structure 40 near the first substrate 10, two adjacent color filter units 50, and the first substrate 10. This space can be filled by the conductive layer 60, thereby ensuring the adhesion between the light-blocking support structure 40 and the first substrate 10.
[0060] In other embodiments, if the first surface area of the color filter unit 50 is the same as the second surface area, the cross-sectional shape of the color filter unit 50 is rectangular. In this case, the periphery of the light-blocking support structure 40 needs to abut against the periphery of the color filter unit 50, thereby avoiding gaps between the light-blocking support structure 40 and the color filter unit 50.
[0061] It should be noted that the color filter unit 50 can be set to any shape, and the gap between adjacent color filter units 50 will also form a corresponding shape. The light-blocking support structure 40 can also set its own shape according to the shape formed by the color filter unit 50. This application does not limit the specific shape of the color filter unit 50 or the specific shape of the light-blocking support structure 40.
[0062] In some embodiments, the cross-sectional area of the light-blocking support structure 40 near the end of the first substrate 10 is greater than the cross-sectional area of the end of the light-blocking support structure 40 away from the first substrate 10.
[0063] For example, the cross-sectional area of the end of the light-blocking support structure 40 near the first substrate 10 is larger than the cross-sectional area of the end away from the first substrate 10, thereby enabling the light-blocking support structure 40 to play a better supporting role. In addition, when providing support for the first substrate 10 and the second substrate 20, it can also reduce the amount of materials used in the preparation, thereby saving the manufacturing cost of the display device 100.
[0064] It should be understood that in the fabrication process, the light-blocking support structure 40 is fabricated on the first substrate 10, such that the cross-sectional area of the end of the light-blocking support structure 40 closer to the first substrate 10 is larger than the cross-sectional area of the end of the light-blocking support structure 40 farther from the first substrate 10. Furthermore, this fabrication process can shorten the process flow, thereby achieving cost savings.
[0065] In some embodiments, the cross-sectional area of the light-blocking support structure 40 decreases in the direction away from the first substrate 10.
[0066] For example, the cross-sectional area of the end of the light-blocking support structure 40 near the first substrate 10 is greater than the cross-sectional area of the end away from the first substrate 10, and the cross-sectional area of the light-blocking support structure 40 decreases in the direction away from the first substrate 10, so that the cross-sectional shape of the light-blocking support structure 40 is trapezoidal.
[0067] For example, the trapezoidal light-blocking support structure 40 can improve the stability of the assembled display device 100. Since the end of the light-blocking support structure 40 near the first substrate 10 needs to cover the second region, a certain requirement is placed on the cross-sectional area of the light-blocking support structure 40. The other end only needs to ensure stable support. By setting the cross-sectional area near the first substrate 10 to be larger than the cross-sectional area away from the first substrate 10, the amount of material used to manufacture the light-blocking support structure 40 can be reduced, thereby saving manufacturing costs for the display device 100. It should be noted that the light-blocking support structure 40 can also be configured with a smaller cross-sectional area near the first substrate 10 than the cross-sectional area away from the first substrate 10. Furthermore, two different types of light-blocking support structures 40 can be simultaneously provided in one display device 100; this application does not impose any limitations.
[0068] In some embodiments, the light-blocking support structure 40 is a black support structure.
[0069] For example, the light-blocking support structure 40 is a black support structure, thereby blocking the transmission of light. For instance, the light-blocking support structure 40 is made of the material used to prepare the black matrix, thus enabling it to perform the same light-blocking function as the black matrix. Furthermore, the periphery of the light-blocking support structure 40 can also abut against the color filter unit 50, or the projection of one end of the light-blocking support structure 40 near the first substrate 10 completely covers the second region of the first substrate 10 and partially overlaps with the adjacent color filter unit 50. This ensures that when light from inside the pixel unit exits the first substrate 10, it can only be filtered by the color filter unit 50 or blocked by the light-blocking support structure 40. Therefore, the light-blocking support structure 40 replaces the light-blocking and pixel-unit-isolation function of the black matrix, eliminating the need for an additional black matrix, thus reducing manufacturing process steps and saving costs on the display device 100.
[0070] In some embodiments, adjacent color filter units 50 may have the same or different filter colors.
[0071] For example, when multiple color filter units 50 are arranged, the filter colors corresponding to adjacent color filter units 50 can be the same or different. For example, the color filter units 50 arranged on the first side are red, blue and green in sequence, or they can be red, red, green, etc. This application does not limit the specific order of color arrangement, and those skilled in the art can set it according to the actual needs of the display device 100.
[0072] Please see Figure 8 , Figure 8 This is a flowchart illustrating the steps of a method for manufacturing a display device according to an embodiment of this application.
[0073] like Figure 8 As shown, the method for preparing the display device includes steps S101 to S105.
[0074] Step S101: Provide a first substrate.
[0075] For example, the first substrate provided may be a glass plate or a substrate made of other transparent materials.
[0076] Step S102: Apply a first photoresist to a first region on the surface of the first substrate, and expose, develop and bake the first substrate coated with the first photoresist to form the color filter unit on the surface of the first substrate.
[0077] For example, a first photoresist is coated at a corresponding position in a first region of a first substrate, and a color filter unit is formed in a first region on the surface of the first substrate by performing processes such as exposure, development and baking on the first substrate after coating with the first photoresist.
[0078] Step S103: Coat the second photoresist in the second region, and expose, develop and bake the first substrate coated with the second photoresist to obtain a light-blocking support structure to form a dam structure.
[0079] For example, a second photoresist is coated on a second region on the surface of the first substrate after the color filter unit is formed, and the first substrate coated with the second photoresist is further subjected to processes such as exposure, development and baking to form a light-blocking support structure around the color filter unit, thereby constituting a dam structure.
[0080] It should be noted that in some other embodiments, the light-blocking support structure may not abut against the first substrate. In this configuration, photoresist can also be applied to the position corresponding to the second region, rather than the surface area of the second substrate, so that the formed light-blocking support structure does not abut against the second substrate.
[0081] Step S104: Fill the cofferdam structure with a flowing medium, and then bond the first substrate and the second substrate together after the flowing medium filling is completed to obtain the display device.
[0082] For example, a screen printing process is used to apply a flow medium, such as electronic paste, to a cofferdam structure, and after the flow medium is filled, it is bonded to a second substrate to form a cell-shaped display device.
[0083] In some embodiments, prior to step S103, a conductive layer is formed on the surface of the color filter unit and the second region. After forming the conductive layer, a second photoresist is coated onto the surface of the conductive layer corresponding to the second region to form a light-blocking support structure on the conductive layer surface. It is understood that the projection of the end of the light-blocking support structure formed on the conductive layer surface near the first substrate completely covers the second region and partially covers the adjacent color filter unit, thereby avoiding gaps between the light-blocking support structure and the color filter unit, and thus preventing a decrease in color contrast caused by light escaping from the pixel unit through these gaps.
[0084] Please see Figure 9 , Figure 9 This is a schematic block diagram of the structure of an electronic device provided in an embodiment of this application.
[0085] like Figure 9As shown, this application also provides an electronic device 1000, which includes a display device 100 as described in any embodiment of this application or a display device manufactured using the aforementioned method. The display device 100 of this electronic device 1000 includes a light-blocking support structure. This light-blocking support structure can prevent the influence of light from different pixel units. Furthermore, the periphery of the light-blocking support structure can abut against a color filter unit, or the projection of one end of the light-blocking support structure near the first substrate onto the color filter unit adjacent to the light-blocking support structure can overlap. This arrangement also prevents light leakage caused by light from inside the pixel unit not passing through the color filter unit, thereby improving the color contrast of the display device and ensuring its display effect. In the above-described configuration, the light-blocking support structure blocks light not emitted from the color filter unit, eliminating the need for a black matrix for light blocking on the first substrate. This reduces the number of manufacturing steps in the display device and saves on its cost.
[0086] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0087] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0088] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0090] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.
Claims
1. A display device, characterized in that, include: A first substrate, the surface of the first substrate includes a plurality of first regions and a plurality of second regions, the first regions being adjacent to the second regions, and the first regions being provided with color filter units; The second substrate is disposed opposite to the first substrate; A flow medium is disposed between the first substrate and the second substrate; A light-blocking support structure is located between the first substrate and the second substrate and is arranged around the color filter unit, and the projection of one end of the light-blocking support structure on the first substrate completely covers the second area of the first substrate. Wherein, the color filter unit adjacent to the light-blocking support structure overlaps with the projection portion; and / or the color filter unit adjacent to the light-blocking support structure abuts against the periphery of the light-blocking support structure.
2. The display device as claimed in claim 1, characterized in that, The overlap area between the color filter unit and the projection is less than or equal to a preset area threshold.
3. The display device as claimed in claim 1, characterized in that, The first thickness of the first substrate in the first region is greater than the second thickness of the first substrate in the second region, and the distance between the end of the light-blocking support structure near the first substrate and the first substrate is less than the first thickness.
4. The display device as claimed in claim 3, characterized in that, The surface area of the color filter unit near the first surface of the first substrate is greater than the surface area of the color filter unit away from the second surface of the first substrate.
5. The display device as claimed in claim 1, characterized in that, The cross-sectional area of the light-blocking support structure near the first substrate is greater than the cross-sectional area of the light-blocking support structure away from the first substrate.
6. The display device as claimed in claim 5, characterized in that, The cross-sectional area of the light-blocking support structure decreases in the direction away from the first substrate.
7. The display device according to any one of claims 1-6, characterized in that, The light-blocking support structure is a black support structure.
8. The display device according to any one of claims 1-6, characterized in that, The adjacent color filter units may have the same or different filter colors.
9. A method for manufacturing a display device, characterized in that, The method for preparing the display device according to any one of claims 1-8 comprises: Provide a first substrate; A first photoresist is applied to a first region on the surface of the first substrate, and the first substrate with the first photoresist applied is exposed, developed and baked to form the color filter unit on the surface of the first substrate. A second photoresist is coated in the second region, and the first substrate coated with the second photoresist is exposed, developed and baked to obtain a light-blocking support structure to form a dam structure. A flow medium is filled into the cofferdam structure, and the first substrate and the second substrate are bonded together after the flow medium filling is completed to obtain a display device.
10. An electronic device, characterized in that, The electronic device includes the display device according to any one of claims 1-8, or the display device obtained by the preparation method of claim 9.