Display panel, preparation method and display device

Abstract

The invention provides a display panel, which comprises a glass substrate, a pixel layer, a black matrix, a color film planarization layer and a high-transmittance planarization layer, and is characterized in that the glass substrate is provided with a first surface and a second surface which are oppositely arranged; the pixel layer is arranged on the first surface, the pixel layer comprises a plurality of sub-pixels, and the sub-pixels are arranged at intervals; the black matrix is arranged on the first surface and surrounds the periphery of the sub-pixels; the color film planarization layer is arranged on one side, far away from the glass substrate, of the black matrix, corresponds to the black matrix and surrounds the periphery of the sub-pixels; the high-transmittance planarization layer is arranged on the first surface and covers the pixel layer, the black matrix and the color film planarization layer; wherein the light transmittance of the high-transmittance planarization layer is higher than that of the color film planarization layer. According to the display panel, the light transmittance can be improved, so that the brightness of the display panel is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to a display panel, a preparation method and a display device. Background Art

[0002] LTPS is the abbreviation of Low-Temperature Polycrystalline Silicon, which is a high-performance thin-film transistor technology widely used in display technologies such as liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs). LTPS technology has the advantages of fast response, low power consumption, high resolution, bright colors and reduced eye fatigue.

[0003] LTPS is currently widely used in the automotive field. With the continuous increase in high-brightness scenes, higher requirements are placed on the transmittance of automotive LTPS products. The existing effective methods to improve transmittance include increasing the aperture ratio and reducing the line width, but the design changes are large and the cost of synchronous adjustment of each section is high. In addition, these methods focus on increasing the amount of light output, but do not make full use of the light. After passing through the T-board and before illuminating the color film, the light is irradiated from multiple angles in the surrounding space, not 100% from the front. In daily use, only the light from the front is the screen brightness we see. Similarly, only this part of the effective brightness is captured by the lens for testing transmittance as the data basis for calculating transmittance. However, the light from other angles does not contribute to the front brightness.

[0004] Therefore, providing a display panel and a display device that improve light utilization efficiency has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] Embodiments of the present application provide a display panel, a manufacturing method, and a display device.

[0006] The embodiment of the present application provides a display panel, comprising: a glass substrate, a pixel layer, a black matrix, a color film planarization layer, and a high-transmittance planarization layer, wherein the glass substrate has a first surface and a second surface arranged opposite to each other; A pixel layer is arranged on the first surface, the pixel layer includes a plurality of sub-pixels, and the sub-pixels are arranged at intervals; The black matrix is ​​arranged on the first surface and surrounds the sub-pixel; the color film planarization layer is arranged on the side of the black matrix away from the glass substrate, corresponding to the black matrix, and surrounds the sub-pixel; the high-transmittance planarization layer is arranged on the first surface and covers the pixel layer, the black matrix and the color film planarization layer; wherein the light transmittance of the high-transmittance planarization layer is higher than that of the color film planarization layer.

[0007] In some embodiments, the color filter planarization layer has a width that gradually decreases from one side of the black matrix to a side away from the black matrix.

[0008] In some embodiments, a thin film transistor layer and a backlight layer are further included. The thin film transistor layer is arranged on a side of the high-transmittance planarization layer away from the glass substrate, and the backlight layer is arranged on a side of the thin film transistor layer away from the high-transmittance planarization layer.

[0009] In some embodiments, a first light-gathering layer is further provided, and the first light-gathering layer is provided between the pixel layer and the glass substrate.

[0010] In some embodiments, the first light-collecting layer includes a plurality of micro-lens units distributed in an array, and the micro-lens units correspond to positions of the sub-pixels.

[0011] In some embodiments, light-gathering particles are further included, and the light-gathering particles are disposed in the high-transmittance planarization layer.

[0012] In some embodiments, a second light-gathering layer is further provided, and the second light-gathering layer is provided between the thin film transistor layer and the high-transmittance planarization layer.

[0013] In some embodiments, the sub-pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

[0014] The present application also provides a method for preparing a display panel, including: Providing a glass substrate, wherein the glass substrate has a first surface and a second surface disposed opposite to each other; A pixel layer is arranged on the first surface, the pixel layer includes a plurality of sub-pixels, the sub-pixels are spaced set up; Forming a black matrix on the first surface and surrounding the periphery of the sub-pixel; A color film planarization layer is arranged on the first surface, covering the pixel layer and the black matrix, and a wall-like structure surrounding the sub-pixels corresponding to the black matrix is ​​formed by patterning; A high-transmittance planarization layer is disposed on the first surface and covers the pixel layer, the black matrix and the color filter planarization layer.

[0015] Another embodiment of the present application further provides a display device, comprising the display panel described in the above embodiment.

[0016] The embodiment of the application provides a display panel, including: a glass substrate, a pixel layer, a black matrix, a color film planarization layer and a high-transmittance planarization layer, the glass substrate has a first surface and a second surface arranged oppositely; the pixel layer is arranged on the first surface, the pixel layer includes a plurality of sub-pixels, and the sub-pixels are arranged at intervals; the black matrix is ​​arranged on the first surface and surrounds the periphery of the sub-pixels; the color film planarization layer is arranged on the side of the black matrix away from the glass substrate, and corresponds to the black matrix, and surrounds the periphery of the sub-pixels; the high-transmittance planarization layer is arranged on the first surface, and covers the pixel layer, the black matrix and the color film planarization layer; wherein the light transmittance of the high-transmittance planarization layer is higher than that of the color film planarization layer. In this application, since the light transmittance of the high-transmittance planarization layer is higher than that of the color film planarization layer, the light passes through the high-transmittance planarization layer and the color film planarization layer with different transmittances, and is irradiated from the high-transmittance planarization layer with high transmittance and is irradiated from the low-transmittance color film planarization layer, the light will be refracted, so that the light flux irradiated from the front is increased, thereby increasing the front brightness, increasing the light transmittance, and thus increasing the brightness of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of a display panel provided in an embodiment of the present application.

[0019] Figure 2 Another structural schematic diagram of a display panel provided in an embodiment of the present application.

[0020] Figure 3 A schematic diagram of the light path of a display panel provided in an embodiment of the present application.

[0021] Figure 4 This is another schematic diagram of the structure of the display panel provided in the embodiment of the present application.

[0022] Figure 5 This is another structural schematic diagram of the display panel provided in the embodiment of the present application.

[0023] Figure 6 A schematic flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0024] Figure 7 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0030] Embodiments of the present application provide a display panel, a manufacturing method, and a display device.

[0031] See also Figure 1 The embodiment of the present application provides a display panel 100, comprising: a glass substrate 10, a pixel layer 20, a black matrix 30, a color film planarization layer 40, and a high-transmittance planarization layer 50. The glass substrate 10 has a first surface 10a and a second surface 10b that are arranged opposite to each other; the pixel layer 20 is arranged on the first surface 10a, and the pixel layer 20 includes a plurality of sub-pixels, and the sub-pixels are arranged at intervals; the black matrix 30 is arranged on the first surface 10a, and surrounds the periphery of the sub-pixels; the color film planarization layer 40 is arranged on a side of the black matrix 30 away from the glass substrate 10, and corresponds to the black matrix 30, and surrounds the periphery of the sub-pixels; the high-transmittance planarization layer 50 is arranged on the first surface 10a, and covers the pixel layer 20, the black matrix 30, and the color film planarization layer 40; wherein the light transmittance of the high-transmittance planarization layer 50 is higher than that of the color film planarization layer 40.

[0032] It should be noted that the first surface 10a may be the upper surface of the glass substrate 10, and the second surface 10b may be the lower surface of the glass substrate 10. Of course, the first surface 10a may also be the lower surface of the glass substrate 10, and the second surface 10b may be the upper surface of the glass substrate 10. In the present invention, unless otherwise specified, it is assumed that the first surface 10a is the lower surface of the glass substrate 10, and the second surface 10b is the upper surface of the glass substrate 10.

[0033] Among them, the glass substrate 10 is the basic bearing component of the entire display panel 100, and its material usually has good optical properties, mechanical strength, thermal stability and other characteristics to adapt to different use environments and manufacturing process requirements. For example, in common display technologies such as liquid crystal display panels 100 (LCD) and organic light emitting diode display panels 100 (OLED), the glass substrate 10 needs to be able to withstand high-temperature processes. For example, in the OLED manufacturing process, it may undergo multiple annealing steps at hundreds of degrees Celsius. If the glass substrate 10 does not have good thermal stability, it is easy to deform and other problems, affecting the display effect and product quality.

[0034] Among them, the sizes of the glass substrate 10 vary, from small sizes used in mobile devices (such as the glass substrate 10 corresponding to the mobile phone screen is relatively small, which is convenient for integration into a compact body), to medium sizes used in tablet computers and laptops, and to large sizes used in large-screen display devices such as televisions. Glass substrates 10 of different sizes also have different requirements in production processes and transportation. Large-sized glass substrates 10 need to be handled with more caution to prevent damage caused by collisions, etc., and large-sized substrates also have more stringent requirements on the accuracy of production equipment and the cleanliness of the production environment.

[0035] Among them, the composition and arrangement of the sub-pixels of the pixel layer 20: The pixel layer 20 is arranged on the first surface 10a of the glass substrate 10. It is one of the core parts for realizing image display and is composed of multiple sub-pixels, which are usually arranged at intervals. Common sub-pixels include three primary color sub-pixels of red (R), green (G), and blue (B), which are arranged and combined according to certain rules to form various color display effects. For example, in the traditional strip arrangement, the red, green, and blue sub-pixels are arranged horizontally in sequence to form a group of pixels, and multiple such pixel groups are neatly arranged on the plane to cover the entire display area; there are other methods such as triangular arrangement, and different arrangements have their own advantages in terms of color mixing uniformity, display resolution, etc. In some high-end display technologies, white (W) sub-pixels are even added to form more complex sub-pixel combination modes such as RGBW, so as to increase brightness while reducing power consumption, so that the picture can be displayed more clearly and brightly in a strong light environment.

[0036] Among them, the pixel layer 20 and the image display principle: each sub-pixel can control its luminous intensity (such as directly controlling the current size to change the brightness in OLED, and adjusting the torsion angle of the liquid crystal molecules in LCD to control the amount of light transmitted by the backlight source to change the brightness), and the red, green, and blue sub-pixel lights of different intensities are mixed together to form a colorful image under the visual persistence effect of the human eye. For example, to display yellow, the red sub-pixel 21 and the green sub-pixel 22 can be made to emit light at a suitable brightness, and the blue sub-pixel 23 can be made to emit light at a lower brightness or not, and the human eye sees the visual effect of yellow. By quickly switching the brightness combination of different pixels, dynamic image display can be achieved.

[0037] Among them, the black matrix 30 is arranged on the first surface 10a of the glass substrate 10 and surrounds the periphery of the sub-pixel. It plays a crucial role in shading, which can prevent light crosstalk between adjacent sub-pixels and improve the contrast of the image and the clarity of the display. Without the black matrix 30, the light emitted by each sub-pixel may affect each other, resulting in blurred edges of the picture and chaotic color mixing. For example, the area that should display pure black may turn gray due to light leakage, greatly affecting the visual effect. At the same time, the black matrix 30 can also play a certain role in shielding external ambient light, reducing the reflection of external light on the screen surface into the human eye, and avoiding the situation where reflections interfere with viewing the content of the picture.

[0038] The black matrix 30 is usually made by fine micro-machining processes such as photolithography, and a specific light-shielding material is accurately deposited on the glass substrate 10 around the sub-pixel according to a designed pattern. The material is generally a substance with a high light-shielding rate, good chemical stability and good compatibility with other functional layers. Compound materials containing metals such as chromium (Cr) are often selected. These materials can effectively absorb light and ensure that the black matrix 30 area is as opaque as possible, thereby achieving its light-shielding function.

[0039] The color film planarization layer 40 is arranged on the side of the black matrix 30 away from the glass substrate 10, corresponding to the black matrix 30, and surrounding the periphery of the sub-pixel. One of its important functions is to flatten the surface of the black matrix 30 and the pixel layer 20 below, because after the previous process steps, the surface of the black matrix 30 and the pixel layer 20 may have certain ups and downs and other uneven conditions, and the color film planarization layer 40 can fill these tiny grooves and provide a relatively smooth surface for the subsequent functional layer to cover, ensuring the stability of the entire display panel 100 structure and the uniformity of optical performance. For example, if the surface is uneven, the other layers covered later may have problems with uneven local thickness, which in turn affects the uniformity of light transmission, resulting in uneven brightness and other undesirable phenomena on the display screen.

[0040] From an optical point of view, the color filter planarization layer 40 itself has certain light transmittance and color filtering functions, and it can adjust the transmitted light to a certain extent, and cooperate with the sub-pixel color display of the pixel layer 20 to further optimize the color effect. However, its light transmittance is lower than that of the high-transmittance planarization layer 50 mentioned later.

[0041] The high-transmittance planarization layer 50 is disposed on the first surface 10a of the glass substrate 10 and covers the pixel layer 20, the black matrix 30 and the color filter planarization layer 40, playing a role in ultimate protection and optimization of optical performance. Its light transmittance is higher than that of the color filter planarization layer 40, which means that it can allow more light to pass through and minimize the loss of light in this layer, thereby improving the brightness and display clarity of the entire display panel 100.

[0042] Since the light transmittance of the high-transmittance planarization layer 50 is higher than that of the color film planarization layer 40, by using the light passing through the high-transmittance planarization layer 50 and the color film planarization layer 40 with different transmittances, the light is refracted when entering from the high-transmittance planarization layer 50 and exiting from the low-transmittance color film planarization layer 40, so that the luminous flux emitted from the front is increased, thereby increasing the front brightness, increasing the transmittance of light, and thus increasing the brightness of the display panel 100.

[0043] In some embodiments, the color filter planarization layer 40 has a width that gradually decreases from one side of the black matrix 30 to a side away from the black matrix 30 .

[0044] It should be noted that when the width of the color film planarization layer 40 gradually decreases from one side of the black matrix 30 to the side away from the black matrix 30, this design is somewhat similar to an inclined slope in shape. With the black matrix 30 as the "border", the coverage of the color film planarization layer 40 gradually narrows. This plays a role in guiding light to a certain extent. In the area close to the black matrix 30, the color film planarization layer 40 is wider, which can better cover and flatten the transition area between the black matrix 30 and the pixel layer 20, and reduce problems such as light scattering caused by uneven structure. As its width decreases in the direction away from the black matrix 30, it can make the light converge more concentratedly to the center of the display area, thereby improving the efficiency of light utilization. In coordination with the high-transmittance planarization layer 50, its gradually decreasing width provides a good transition basis for the high-transmittance planarization layer 50. The high-transmittance planarization layer 50 covers the color film planarization layer 40. The shape of the color film planarization layer 40 can make it easier for the high-transmittance planarization layer 50 to achieve a flat surface when covering, and can better cooperate with the color film planarization layer 40 to guide light to pass through. Because one of the main functions of the high-transmittance planarization layer 50 is to allow light to pass through efficiently, the design of the color film planarization layer 40 is beneficial for both to jointly improve the quality of light transmission. The light will be refracted, which increases the luminous flux from the front, thereby increasing the front brightness and the light transmittance, thereby increasing the brightness of the display panel 100.

[0045] See also Figure 2 and Figure 3 In some embodiments, it also includes a thin film transistor layer 60 and a backlight layer 70, wherein the thin film transistor layer 60 is arranged on a side of the high-transmittance planarization layer 50 away from the glass substrate 10, and the backlight layer 70 is arranged on a side of the thin film transistor layer 60 away from the high-transmittance planarization layer 50.

[0046] It should be noted that the thin film transistor layer 60 (TFT layer) is composed of many thin film transistors, each of which controls a sub-pixel. When current passes through the TFT, the arrangement of liquid crystal molecules can be controlled, thereby controlling the amount of light passing through and realizing the display of images. The TFT layer is usually composed of semiconductor materials (such as amorphous silicon or low-temperature polysilicon), an insulating layer, a source electrode, a drain electrode, and a gate electrode. These components together constitute a field effect transistor that can control the flow of current.

[0047] Among them, the backlight layer 70 is arranged on the side of the thin film transistor layer 60 away from the high-transmittance planarization layer 50, that is, the backlight layer 70 is located on the back of the entire display panel 100. The function of the backlight layer 70 is to provide a uniform light source so that light can pass through the liquid crystal layer and the color filter layer to finally form a visible image. Without the backlight layer 70, the liquid crystal display will not be able to display images because the liquid crystal itself does not emit light. The backlight layer 70 can be a CCFL (cold cathode fluorescent lamp) or LED (light-emitting diode) backlight, among which LED backlight is becoming more and more popular due to its high brightness, low power consumption and long life.

[0048] It should be noted that the light emitted by the backlight layer 70 passes through the thin film crystal layer, and then passes through the high-transmittance flattening layer 50 and the color film flattening layer 40. The light will be refracted, which increases the luminous flux from the front, thereby increasing the front brightness and the light transmittance, thereby increasing the brightness of the display panel 100.

[0049] See also Figure 4 In some embodiments, a first light-gathering layer 80 is further provided, and the first light-gathering layer 80 is provided between the pixel layer 20 and the glass substrate 10 .

[0050] It should be noted that the first light-collecting layer 80 is located between the pixel layer 20 and the glass substrate 10, which makes it at the front end of the light propagation path. It can regulate the light immediately after the light is generated from the pixel layer 20, just like "shaping" the light in advance at the light source, laying the foundation for the subsequent light propagation in the entire display panel 100.

[0051] The first light-concentrating layer 80 usually utilizes the refraction, reflection and other properties of optical materials to achieve the light-concentrating function.

[0052] In some embodiments, the first light focusing layer 80 includes a plurality of micro lens units 81 distributed in an array, and the micro lens units 81 correspond to the positions of the sub-pixels.

[0053] It should be noted that it may adopt a microlens array structure, and these tiny lens units are arranged and distributed on the entire light-collecting layer according to a certain rule, and each lens unit corresponds to one or a group of sub-pixels of the upper pixel layer 20. When the sub-pixel emits light, the light enters the corresponding microlens unit 81, and the microlens will converge the light originally diverging in different directions according to its own optical parameters such as curvature, so that the light propagates in the front direction, further improving the light transmittance, thereby improving the brightness of the display panel 100.

[0054] In some embodiments, light-gathering particles are further included, and the light-gathering particles are disposed in the high-transmittance planarization layer 50 .

[0055] It should be noted that the light-gathering particles are usually made of materials with special optical properties. For example, inorganic materials with high refractive index may be used, such as titanium dioxide (TiO2) and zinc oxide (ZnO), which have strong refractive and convergence capabilities for light. Or some organic polymer materials that have been specially modified are selected to have a suitable optical refractive index and can change the propagation path of light. Moreover, the material of the light-gathering particles is generally required to be stable in chemical properties and to be well compatible with the base material of the high-transmittance planarization layer 50 to avoid chemical reactions during long-term use that affect its light-gathering function and the stability of the entire display panel 100.

[0056] The focusing particles are mostly tiny particles in shape, and their sizes are usually in the range of nanometers to micrometers. Nano-scale focusing particles can be more evenly dispersed in the high-transmittance flattening layer 50 due to their extremely small particle size, and when interacting with light, they can achieve more precise light regulation based on microscopic optical effects (such as quantum confinement effects, etc., which are special effects that change the optical properties of materials in some nanomaterials). Micron-level focusing particles can produce a more obvious focusing effect on a macro scale, for example, forming a small lens-like effect to converge a larger range of light. Focusing particles of different sizes can be mixed in a certain proportion according to the specific needs of the display panel 100 to achieve the best focusing effect. The light is propagated in the front direction, further improving the transmittance of light, thereby improving the brightness of the display panel 100.

[0057] The high-transmittance planarization layer 50 itself mainly focuses on ensuring high light transmittance and providing a flat surface for the entire display panel 100. The addition of light-gathering particles further expands its function, and performs secondary optimization on the transmitted light without significantly affecting its light transmittance and flatness. The light-gathering particles can further "gather" the light here, improve the concentration of light when it is emitted from the display panel 100, thereby improving the overall brightness of the picture and the viewing effect at different viewing angles.

[0058] See also Figure 5 In some embodiments, a second light-gathering layer 90 is further provided, and the second light-gathering layer 90 is provided between the thin film transistor layer 60 and the high-transmittance planarization layer 50 .

[0059] It should be noted that the second focusing layer 90 is located between the thin film transistor layer 60 and the high-transmittance planarization layer 50. After the light is initially regulated by the second focusing layer 90, the light is allowed to continue to be transmitted to the high-transmittance planarization layer 50, preparing for the light to finally pass through the display panel 100 with high quality.

[0060] In some embodiments, the sub-pixel unit includes a red sub-pixel 21 , a green sub-pixel 22 , and a blue sub-pixel 23 .

[0061] The application embodiment provides a display panel 100, including: a glass substrate 10, a pixel layer 20, a black matrix 30, a color film planarization layer 40 and a high-transmittance planarization layer 50, the glass substrate 10 has a first surface 10a and a second surface 10b arranged opposite to each other; the pixel layer 20 is arranged on the first surface 10a, and the pixel layer 20 includes a plurality of sub-pixels, and the sub-pixels are arranged at intervals; the black matrix 30 is arranged on the first surface 10a and surrounds the periphery of the sub-pixels; the color film planarization layer 40 is arranged on a side of the black matrix 30 away from the glass substrate 10, and corresponds to the black matrix 30, and surrounds the periphery of the sub-pixels; the high-transmittance planarization layer 50 is arranged on the first surface 10a, and covers the pixel layer 20, the black matrix 30 and the color film planarization layer 40; wherein the light transmittance of the high-transmittance planarization layer 50 is higher than that of the color film planarization layer 40. Since the light transmittance of the high-transmittance planarization layer 50 is higher than that of the color film planarization layer 40, the present application utilizes the light passing through the high-transmittance planarization layer 50 and the color film planarization layer 40 with different transmittances. The light enters from the high-transmittance planarization layer 50 and exits from the low-transmittance color film planarization layer 40. The light will be refracted, which increases the luminous flux emitted from the front, thereby increasing the front brightness, increasing the light transmittance, and thus increasing the brightness of the display panel 100.

[0062] See also Figure 6 The present application also provides a method for preparing a display panel, including: 101. Provide a glass substrate, wherein the glass substrate has a first surface and a second surface that are opposite to each other.

[0063] 102 : A pixel layer is arranged on the first surface, wherein the pixel layer includes a plurality of sub-pixels, and the sub-pixels are arranged at intervals.

[0064] 103. Form a black matrix on the first surface and surround the sub-pixel.

[0065] 104. A color filter planarization layer is provided on the first surface to cover the pixel layer and the black matrix, and a wall-like structure surrounding sub-pixels corresponding to the black matrix is ​​formed by patterning.

[0066] 104. Dispose a high-transmittance planarization layer on the first surface, and cover the pixel layer, the black matrix and the color filter planarization layer.

[0067] Since the light transmittance of the high-transmittance flattening layer is higher than that of the color film flattening layer, the present application utilizes the light passing through the high-transmittance flattening layer and the color film flattening layer with different transmittances. The light enters from the high-transmittance flattening layer and exits through the low-transmittance color film flattening layer. The light will be refracted, increasing the luminous flux emitted from the front, thereby increasing the front brightness, increasing the light transmittance, and thus increasing the brightness of the display panel.

[0068] See also Figure 7 Another embodiment of the present application further provides a display device 1000, comprising the display panel 100 described in the above embodiment. Since the display panel 100 has been described in detail in the above embodiment, the display panel 100 in the above embodiment will not be described in detail in the present application embodiment.

[0069] The display panel, preparation method and display device provided by the embodiments of the present application are described in detail above. The principles and implementation methods of the present application are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A display panel, characterized in that: include: A glass substrate having a first surface and a second surface arranged opposite to each other; A pixel layer, arranged on the first surface, the pixel layer comprising a plurality of sub-pixels, and the sub-pixels are arranged at intervals; A black matrix is ​​disposed on the first surface and surrounds the periphery of the sub-pixel; A color film planarization layer is arranged on a side of the black matrix away from the glass substrate, corresponds to the black matrix, and surrounds the periphery of the sub-pixel; A high-transmittance planarization layer, disposed on the first surface and covering the pixel layer, the black matrix and the color filter planarization layer; Among them, the light transmittance of the high-transmittance planarization layer is higher than that of the color film planarization layer.

2. The display panel according to claim 1, characterized in that: The color film planarization layer has a width that gradually decreases from one side of the black matrix to a side away from the black matrix.

3. The display panel according to claim 2, characterized in that: It also includes a thin film transistor layer and a backlight layer. The thin film transistor layer is arranged on a side of the high-transmittance planarization layer away from the glass substrate, and the backlight layer is arranged on a side of the thin film transistor layer away from the high-transmittance planarization layer.

4. The display panel according to claim 1, characterized in that: A first light-gathering layer is also provided, and the first light-gathering layer is provided between the pixel layer and the glass substrate.

5. The display panel according to claim 4, characterized in that: The first light-collecting layer includes a plurality of micro-lens units distributed in an array, and the micro-lens units correspond to the positions of the sub-pixels.

6. The display panel according to any one of claims 1 to 5, characterized in that: It also includes light-gathering particles, which are arranged in the high-transmittance planarization layer.

7. The display panel according to any one of claims 1 to 5, characterized in that: It also includes a second light-gathering layer, which is arranged between the thin film transistor layer and the high-transmittance planarization layer.

8. The display panel according to claim 1, characterized in that: The sub-pixel unit includes a red sub-pixel, a green sub-pixel and a blue sub-pixel.

9. A method for preparing a display panel, characterized in that: include: Providing a glass substrate, wherein the glass substrate has a first surface and a second surface disposed opposite to each other; A pixel layer is arranged on the first surface, the pixel layer includes a plurality of sub-pixels, the sub-pixels are spaced set up; Forming a black matrix on the first surface and surrounding the periphery of the sub-pixel; A color film planarization layer is arranged on the first surface, covering the pixel layer and the black matrix, and a wall-like structure surrounding the sub-pixels corresponding to the black matrix is ​​formed by patterning; A high-transmittance planarization layer is disposed on the first surface and covers the pixel layer, the black matrix and the color filter planarization layer.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 8.

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