Array substrate and display panel

Abstract

The invention discloses an array substrate and a display panel, the array substrate comprises a substrate, a driving circuit layer and a filter layer, and the driving circuit layer is located on one side of the substrate; the light filtering layer is located on the side, away from the substrate, of the driving circuit layer and comprises light filtering function parts in various colors, the light filtering function parts in various colors at least comprise first light filtering function parts, and light filtering blocking parts are arranged around the first light filtering function parts. The transmittance of the first filtering function part to the light with the preset color is larger than the transmittance of the filtering blocking part to the light with the preset color. According to the array substrate, the light leakage problem can be effectively solved, and the display quality is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of display panels, and in particular, relates to an array substrate and a display panel. Background Art

[0002] Flat display panels such as Organic Light Emitting Diode (OLED) panels and display panels using light emitting diode (LED) devices have the advantages of high image quality, power saving, thin body and wide application range. They are widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, laptops, desktop computers, etc., becoming the mainstream in display devices.

[0003] In existing OLED display panels, red sub-pixels have a light leakage problem. The exposed light is easily diffracted to adjacent sub-pixels and causes poor cross-color, which seriously affects the display effect of the product. Summary of the invention

[0004] The purpose of this application is to at least solve the problem of sub-pixel light leakage in a display panel. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the present application provides an array substrate, comprising:

[0006] substrate;

[0007] A driving circuit layer, located on one side of the substrate;

[0008] The filter layer is located on the side of the driving circuit layer away from the substrate, and includes filter function parts of multiple colors, the filter function parts of multiple colors include at least a first filter function part, a filter blocking part is arranged around the first filter function part, and the transmittance of the first filter function part to the light of the preset color is greater than the transmittance of the filter blocking part to the light of the preset color. The array substrate provided in the present application includes a substrate, a driving circuit layer and a filter layer. The driving circuit layer is located on one side of the substrate, and the driving circuit layer includes devices such as transistors and capacitors. The filter layer is located on the side of the driving circuit layer away from the substrate, and the filter layer includes filter function parts of multiple colors, and the filter function parts of multiple colors are used to filter light for color display. Among them, the filter function parts of multiple colors include at least a first filter function part, and a filter blocking part is arranged around the first filter function part, and the filter blocking part can block light of some colors and allow light of some colors to pass. In the first filtering function part and the filtering blocking part located around the first filtering function part, the transmittance of the first filtering function part to the light of the preset color is greater than the transmittance of the filtering blocking part to the light of the preset color, that is, the transmittance of the first filtering function part to the light of the preset color is higher, and the filtering blocking part can block the light of the preset color, so that the light emitted from the surrounding of the first filtering function part can be blocked by the filtering blocking part, and the probability of the light filtered by the first filtering function part diffracting to the area where the adjacent filtering function part is located is reduced, which helps to improve the color cross-talk problem between the areas where the adjacent filtering function parts are located.

[0009] In some embodiments of the present application, a material of the light filtering blocking portion is the same as a material of a light filtering functional portion other than the first light filtering functional portion.

[0010] In some embodiments of the present application, the filtering function parts of multiple colors include a first filtering function part and a second filtering function part with different colors, the first filtering function part is a red filtering function part, the preset color includes red, the filtering blocking part is arranged around the first filtering function part, the filtering blocking part includes at least a first blocking part, and the first blocking part has the same color as the second filtering function part.

[0011] In some embodiments of the present application, the first blocking portion is a continuous structure arranged around the first filtering function portion; or, the first blocking portion includes a plurality of first blocking sections spaced apart from each other and arranged along the circumference of the first filtering function portion.

[0012] In some embodiments of the present application, the color of the second filtering function portion is green or blue.

[0013] In some embodiments of the present application, the plurality of color filtering function parts further include a third filtering function part having a different color from the first filtering function part and the second filtering function part, and the filtering blocking part further includes a second blocking part having the same color as the third filtering function part.

[0014] In some embodiments of the present application, the second blocking portion is a continuous structure arranged around the first blocking portion; or, the second blocking portion includes a plurality of second blocking sections spaced apart from each other and arranged along the circumference of the first blocking portion.

[0015] In some embodiments of the present application, the first blocking portion includes a plurality of first blocking sub-portions, and the plurality of first blocking sub-portions are arranged along the circumference of the first filtering functional portion, and the second blocking portion includes a plurality of second blocking sub-portions, and when the plurality of second blocking sub-portions are arranged along the circumference of the first filtering functional portion, the second blocking sub-portions and the first blocking portion are staggered along the circumference of the first filtering functional portion.

[0016] In some embodiments of the present application, the orthographic projection of the first filtering function portion on the substrate includes a central portion and an edge portion arranged around the central portion, the orthographic projection of the second blocking portion on the substrate includes the edge portion, and the second blocking portion is located on a side surface of the first filtering function portion that is away from the substrate.

[0017] In some embodiments of the present application, the color of the second blocking portion is one of green and blue, and the color of the first blocking portion is the other of green and blue.

[0018] In some embodiments of the present application, the array substrate further comprises a flat layer located on a side of the filter layer away from the substrate, and a portion of the flat layer located on a side of the filter function portion away from the substrate has a thickness H, 0.2 μm≤H≤2 um.

[0019] In some embodiments of the present application, the array substrate further includes a first electrode layer, the first electrode layer is located on a side of the filter layer away from the substrate, and the first electrode layer includes a plurality of first electrodes arranged at intervals.

[0020] The second aspect of the present application further provides a display panel, comprising any array substrate provided in the first aspect of the present application.

[0021] In some embodiments of the present application, a light-emitting layer and a second electrode are further included. The light-emitting layer is located on a side of the filter layer away from the substrate, and the second electrode is located on a side of the light-emitting layer away from the filter layer. The second electrode is used to reflect light emitted by the light-emitting layer.

[0022] The third aspect of the present application also provides another display panel, comprising:

[0023] An array substrate;

[0024] A light-emitting layer, located on one side of the array substrate;

[0025] A filter layer is located on a side of the light-emitting layer away from the array substrate, the filter layer includes filter function parts of multiple colors, the filter function parts of multiple colors include at least a first filter function part, a filter blocking part is arranged around the first filter function part, and the transmittance of the first filter function part to light of a preset color is greater than the transmittance of the filter blocking part to light of the preset color. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 is a structural schematic diagram of an array substrate provided in an embodiment of the present application;

[0028] Figure 2 yes Figure 1 The first cross-sectional view along P-P';

[0029] Figure 3 is a schematic diagram of an application state of an array substrate provided in an embodiment of the present application;

[0030] Figure 4 yes Figure 1 The first type of enlarged view of the middle M region;

[0031] Figure 5 yes Figure 1 The second magnification of the middle M region;

[0032] Figure 6 yes Figure 1 The second cross-sectional view along the P-P' line;

[0033] Figure 7 yes Figure 1 The third magnification of the middle M region;

[0034] Figure 8 yes Figure 1 The fourth magnification of the middle M region;

[0035] Fig. 9 yes Figure 1 The fifth magnification of the middle M region;

[0036] Fig.10 yes Figure 1 A third cross-sectional view along the P-P' line;

[0037] Fig.11 yes Figure 1 A fourth cross-sectional view along the P-P' line;

[0038] Fig.12 yes Figure 1 The fifth cross-sectional view along the middle line P-P';

[0039] Fig.13 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0040] Fig.14 yes Fig.13 The first cross-sectional view along Q-Q';

[0041] Fig.15 yes Fig.13 The second cross-sectional view along Q-Q'.

[0042] The reference numerals are as follows:

[0043] 1. Array substrate; 11. Substrate; 12. Driving circuit layer; 121. Active layer; 122. Gate; 123. Shading layer; 124. Buffer layer; 125. Gate insulating layer; 126. Interlayer dielectric layer; 127. First via hole; 128. Second via hole; 13. Filter layer; 131. Filter function part; 1311. First filter function part; 1312. Second filter function part; 1313. Third filter function part; 132. Filter blocking part; 1321. First blocking part; 1322. First blocking sub-part; 1323. Second blocking part; 1324. Second blocking sub-part; 14. Flat layer; 15. First electrode layer; 151. First electrode; 2. Display panel; 20. Pixel defining layer; 201. Main body; 202. Opening; 21. Light-emitting layer; 22. Second electrode; 23. Encapsulation layer. DETAILED DESCRIPTION

[0044] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0045] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0046] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0047] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0048] After research, it was found that the reason why the red sub-pixel has a light leakage problem in the existing OLED display panel is that the material of the pixel definition layer has a poor light shielding effect on light waves above 650nm, that is, the light shielding effect on the red sub-pixel is poor. Therefore, the red light in the light emitted by the light-emitting layer is easy to pass through the edge position of the opening of the pixel definition layer, and is reflected at the interface between the filter and the lower film layer. The reflected light is easy to be emitted from the periphery of the filter, thereby causing the red sub-pixel to have a light leakage problem. The light of the red sub-pixel is easy to diffract to the adjacent sub-pixel and cause poor cross-color, which seriously affects the display effect of the product. Therefore, the present application provides an array substrate and a display panel to improve the light leakage and cross-color problems of sub-pixels.

[0049] like Figure 1 and Figure 2 As shown, according to the embodiment of the present application, an array substrate 1 is proposed, the array substrate 1 includes a substrate 11, a driving circuit layer 12 and a filter layer 13, the driving circuit layer 12 is located on one side of the substrate 11; the filter layer 13 is located on the side of the driving circuit layer 12 away from the substrate 11, and includes a plurality of color filter function parts 131, the plurality of color filter function parts 131 at least include a first filter function part 1311, a filter blocking part 132 is arranged around the first filter function part 1311, and the transmittance of the first filter function part 1311 to the light of the preset color is greater than the transmittance of the filter blocking part 132 to the light of the preset color. .

[0050] The array substrate 1 provided in the present application includes a substrate 11, a driving circuit layer 12 and a filter layer 13. The driving circuit layer 12 is located on one side of the substrate 11, and the driving circuit layer 12 includes devices such as transistors and capacitors. The filter layer 13 is located on the side of the driving circuit layer 12 away from the substrate 11, and the filter layer 13 includes a filter function part 131 of multiple colors, and the filter function part 131 of multiple colors is used to filter light for color display. Among them, the filter function part 131 of multiple colors includes at least a first filter function part 1311, and a filter blocking part 132 is arranged around the first filter function part 1311, and the filter blocking part 132 can block light of some colors and allow light of some colors to pass. In the first filtering functional portion 1311 and the filtering blocking portion 132 located around the first filtering functional portion 1311, the transmittance of the first filtering functional portion 1311 to the light of the preset color is greater than the transmittance of the filtering blocking portion 132 to the light of the preset color, that is, the transmittance of the first filtering functional portion 1311 to the light of the preset color is higher, and the filtering blocking portion 132 can block the light of the preset color, so that the light emitted from the surrounding of the first filtering functional portion 1311 can be blocked by the filtering blocking portion 132, thereby reducing the probability of the light filtered by the first filtering functional portion 1311 being diffracted into the area where the adjacent filtering functional portion 131 is located, thereby helping to improve the color cross-talk problem between the areas where the adjacent filtering functional portions 131 are located.

[0051] Specifically, the above-mentioned “area where the filtering function unit 131 is located” refers to the area in the array substrate 1 that is opposite to the filtering function unit 131 along the thickness direction of the array substrate 1, that is, the area through which the projection path of the filtering function unit 131 passes when projecting along its own thickness direction.

[0052] In the above-mentioned embodiment, the colors of the multiple different colors of the filter function part 131 include red, green and blue. The red filter function part 131 can be used to pass red light, that is, the red filter function part 131 has a high transmittance to red light, and a very low transmittance to green light and blue light, and can be regarded as not transmitting green light and blue light. The green filter function part 131 can be used to pass green light, that is, the green filter function part 131 has a high transmittance to green light, and a very low transmittance to red light and blue light, and can be regarded as not transmitting red light and blue light. The blue filter function part 131 can be used to pass blue light, that is, the blue filter function part 131 has a high transmittance to blue light, and a very low transmittance to red light and green light, and can be regarded as not transmitting red light and green light. Among them, the preset colors may include red, green or blue.

[0053] In the first filter function part 1311 and the filter blocking part 132 located around the first filter function part 1311, the transmittance of the first filter function part 1311 to the light of the preset color is greater than the transmittance of the filter blocking part 132 to the light of the preset color, wherein the light of the preset color corresponding to the red filter function part 131 is red light, and the filter blocking part 132 arranged around the red filter function part 131 has a very low transmittance to the red light, and can be regarded as not transmitting the red light. The light of the preset color corresponding to the green filter function part 131 is green light, and the filter blocking part 132 arranged around the green filter function part 131 has a very low transmittance to the green light, and can be regarded as not transmitting the green light. The light of the preset color corresponding to the blue filter function part 131 is blue light, and the filter blocking part 132 arranged around the blue filter function part 131 has a very low transmittance to the blue light, and can be regarded as not transmitting the blue light. Specifically, the color of the first filter function part 1311 may be red, green or blue.

[0054] In a possible implementation, Figure 2 As shown, the transistor may be a top-gate transistor, that is, the transistor includes a source region, a drain region and a channel region located in the active layer 121 , and also includes a gate 122 located on a side of the channel layer away from the substrate 11 .

[0055] Specifically, the top-gate transistor has the characteristic of a short channel, so its on-state current can be effectively increased, thereby significantly improving the display effect and effectively reducing power consumption. In addition, the gate 122 of the top-gate transistor has a small overlap area with the source and drain, so the parasitic capacitance generated is small, so the possibility of the growing dark spot (GDS) defect is also reduced.

[0056] In another feasible implementation, the transistor may be a bottom-gate transistor, that is, the transistor includes a source region, a drain region and a channel region located in the active layer 121 , and also includes a gate 122 located on a side of the channel layer close to the substrate 11 .

[0057] In a feasible implementation manner, the material of the light filtering blocking portion 132 is the same as the material of a light filtering functional portion 131 other than the first light filtering functional portion 1311 .

[0058] Specifically, the material of the light filtering function part 131 includes colloid and dye doped in the colloid, and the dyes in the light filtering function parts 131 of different colors are different.

[0059] In the above embodiment, the material of the light filter blocking portion 132 is the same as the material of a light filter functional portion 131 other than the first light filter functional portion 1311, that is, the light filter blocking portion 132 may be the same as the material of one of the red light filter functional portion 131, the green light filter functional portion 131, and the blue light filter functional portion 131. When the color of the first light filter functional portion 1311 is red, the light filter blocking portion 132 may be the same as the material of one of the green light filter functional portion 131 and the blue light filter functional portion 131; when the color of the first light filter functional portion 1311 is green, the light filter blocking portion 132 may be the same as the material of one of the blue light filter functional portion 131 and the red light filter functional portion 131; when the color of the first light filter functional portion 1311 is blue, the light filter blocking portion 132 may be the same as the material of one of the green light filter functional portion 131 and the red light filter functional portion 131.

[0060] In the above embodiment, the filter blocking portion 132 can be prepared while preparing the filter function portion 131, so that the preparation of the filter layer 13 only needs to use the materials used to prepare the filter function portion 131, without introducing new materials, thereby simplifying the preparation process and reducing the preparation cost.

[0061] In a possible implementation, Figure 2 As shown, the array substrate 1 further includes a first electrode layer 15 . The first electrode layer 15 is located on a side of the filter layer 13 away from the substrate 11 . The first electrode layer 15 includes a plurality of first electrodes 151 that are spaced apart.

[0062] The array substrate 1 is applied to the display panel 2, and is used to drive the light emitting layer 21 in the display panel 2 to display. Specifically, the array substrate 1 further includes a first electrode layer 15 on a side away from the substrate 11. The first electrode layer 15 is used to be arranged in contact with the light emitting layer 21. The first electrode layer 15 includes a plurality of first electrodes 151 arranged at intervals. The display panel 2 includes a plurality of sub-pixels, and each sub-pixel includes a first electrode 151. The orthographic projection of each first electrode on the substrate 11 at least partially overlaps with the orthographic projection of a filter function portion 131 on the substrate 11, so that the light emitted from the position of the light emitting layer 21 opposite to the first electrode 151 can be filtered by the filter function portion 131 for display.

[0063] Specifically, the light-emitting layer 21 can be used to emit white light, and the white light emits red light, green light and blue light after being filtered by the filter layer 13. At this time, the light-emitting layer 21 can be prepared uniformly as a whole layer, thereby saving preparation process and preparation cost.

[0064] Alternatively, the light-emitting layer 21 may include a first light-emitting functional layer for emitting red light, a second light-emitting functional layer for emitting green light, and a third light-emitting functional layer for emitting blue light, the red light filtering functional portion 131 corresponds one-to-one to the first light-emitting functional layer, and the red light filtering functional portion 131 and the first light-emitting functional layer have at least partially overlapping orthographic projections on the substrate 11; the green light filtering functional portion 131 corresponds one-to-one to the second light-emitting functional layer, and the green light filtering functional portion 131 and the second light-emitting functional layer have at least partially overlapping orthographic projections on the substrate 11; the blue light filtering functional portion 131 corresponds one-to-one to the third light-emitting functional layer, and the blue light filtering functional portion 131 and the third light-emitting functional layer have at least partially overlapping orthographic projections on the substrate 11.

[0065] Specifically, the sub-pixel includes the first electrode 151 , the filter function portion 131 corresponding to the first electrode 151 , and a portion of the light emitting layer 21 opposite to the first electrode 151 .

[0066] Specifically, the display panel 2 also includes a pixel defining layer 20, which is located on the side of the first electrode layer 15 away from the driving circuit layer 12. The pixel defining layer 20 includes a main body 201 and an opening 202. The opening 202 corresponds to the first electrode 151 one by one and exposes a portion of the first electrode 151. At least a portion of the light-emitting layer 21 is located in the opening 202. The main body 201 covers the area between adjacent first electrodes 151 and covers the edges of the first electrodes 151, so as to achieve mutual insulation between adjacent first electrodes 151.

[0067] Since the pixel defining layer 20 in conventional technology is made of organic glue, the pixel defining layer 20 has a poor shielding effect on the red light, so that the light can pass through the edge of the opening. Part of the light passing through the edge of the opening is easily diffracted to the adjacent sub-pixel after being reflected by the interface below, which can easily cause crosstalk to the adjacent sub-pixel.

[0068] In a possible implementation, Figure 2 As shown, the multi-color filtering function portion 131 includes a first filtering function portion 1311 and a second filtering function portion 1312 of different colors. The first filtering function portion 1311 is a red filtering function portion 131, and the preset colors include red. A filtering blocking portion 132 is arranged around the first filtering function portion 1311, and the filtering blocking portion 132 includes at least a first blocking portion 1321. The first blocking portion 1321 has the same color as the second filtering function portion 1312.

[0069] The first light filtering functional portion 1311 is a red light filtering functional portion 131 , and the transmittance of the first light filtering functional portion 1311 to red light is greater than the transmittance of the light filtering blocking portion 132 to red light.

[0070] By setting a filter blocking portion 132 around the red filter functional portion 131, the light emitted from the periphery of the red filter functional portion 131 can be blocked, that is, the light reflected by the lower interface is blocked from being emitted from the side wall of the red filter functional portion 131 and then diffracted to the adjacent sub-pixels, thereby reducing the probability of light leakage problems in the sub-pixels corresponding to the red filter functional portion 131, thereby improving the display effect of the product.

[0071] Among them, the second filtering function part 1312 can be a green filtering function part 131 or a blue filtering function part 131, and the filtering blocking part 132 at least includes a first blocking part 1321. The first blocking part 1321 and the second filtering function part 1312 have the same color and the same material, so that the first blocking part 1321 and the second filtering function part 1312 can be prepared at the same time to save preparation process and reduce preparation cost.

[0072] In a possible implementation, Figure 4 As shown, the first blocking portion 1321 is a continuous structure arranged around the first filtering function portion 1311; or Figure 5 As shown, the first blocking portion 1321 includes a plurality of first blocking sub-portions 1322 spaced apart from each other and arranged along the circumference of the first filtering function portion 1311 .

[0073] In the above embodiment, the first blocking portion 1321 may be a continuous structure arranged around the first filtering functional portion 1311, so as to achieve all-round blocking of light leakage in the circumference of the red filtering functional portion 131, so as to further reduce the probability of light leakage from the red filtering functional portion 131.

[0074] Specifically, the dimension of the first blocking portion 1321 along the thickness direction of the array substrate 1 is greater than or equal to the dimension of the red filtering function portion 131 along the thickness direction of the array substrate 1, thereby achieving a better blocking effect on light leakage in the thickness direction of the array substrate 1.

[0075] In the above implementation mode, if Figure 5 As shown, the first blocking portion 1321 includes a plurality of first blocking sub-portions 1322 spaced apart from each other and arranged along the circumference of the first filtering function portion 1311. The first blocking sub-portions 1322 can be arranged between adjacent filtering function portions 131 according to the distribution of the filtering function portions 131. For example, when the filtering function portions 131 are arranged along rows and columns in the array substrate 1, part of the first blocking sub-portions 1322 can be located between the red filtering function portion 131 and the filtering function portion 131 adjacent to the red filtering function portion 131 along the row direction, and part of the first blocking sub-portion 1322 can be located between the red filtering function portion 131 and the filtering function portion 131 adjacent to the red filtering function portion 131 along the column direction.

[0076] In a feasible implementation manner, the color of the second filtering function portion 1312 is green or blue.

[0077] In the above embodiment, the color of the second filtering functional portion 1312 is different from the color of the first filtering functional portion 1311. Specifically, the color of the second filtering functional portion 1312 can be green or blue, and the color of the first blocking portion 1321 can be green or blue, thereby effectively blocking the red light and preventing the red light from leaking out.

[0078] In a possible implementation, Figure 2 As shown, the multi-color filtering function part 131 also includes a third filtering function part 1313 of a different color from the first filtering function part 1311 and the second filtering function part 1312 , and the filtering blocking part 132 also includes a second blocking part 1323 , and the second blocking part 1323 has the same color as the third filtering function part 1313 .

[0079] In the above embodiment, the multi-color filtering function portion 131 also includes a third filtering function portion 1313 having a different color from the first filtering function portion 1311 and the second filtering function portion 1312, wherein one of the second filtering function portion 1312 and the third filtering function portion 1313 may be a blue filtering function portion, and the other may be a green filtering function portion 131.

[0080] Specifically, the color of the second barrier portion 1323 is one of green and blue, and the color of the first barrier portion 1321 is the other of green and blue.

[0081] like Figure 6 As shown, the filter blocking portion 132 further includes a second blocking portion 1323, and the second blocking portion 1323 has the same color as the third filter function portion 1313, that is, the filter blocking portion 132 located around the red filter function portion 131 includes a first blocking portion 1321 and a second blocking portion 1323, one of the first blocking portion 1321 and the second blocking portion 1323 has the same color and material as the blue filter function portion 131, so they can be prepared simultaneously, and the other has the same color and material as the green filter function portion 131, so they can be prepared simultaneously. The first blocking portion 1321 and the second blocking portion 1323 are used to double-wrap the first filter function portion 1311, which can further improve the effect of preventing light leakage.

[0082] In a possible implementation, Figure 7 As shown, the second blocking portion 1323 is a continuous structure arranged around the first blocking portion 1321; or Figure 8 As shown, the second blocking portion 1323 includes a plurality of second blocking sub-portions 1324 that are arranged along the circumference of the first blocking portion 1321 and are spaced apart from each other.

[0083] In the above embodiment, the second blocking portion 1323 may be a continuous structure arranged around the first blocking portion 1321 , so as to achieve all-round blocking of light leakage in the circumference of the red filter functional portion 131 , so as to further reduce the probability of light leakage from the red filter functional portion 131 .

[0084] Specifically, the size of the second blocking portion 1323 along the thickness direction of the array substrate 1 is greater than or equal to the size of the red filtering function portion 131 along the thickness direction of the array substrate 1, thereby achieving a better blocking effect on light leakage in the thickness direction of the array substrate 1.

[0085] In the above embodiment, the second blocking portion 1323 includes a plurality of second blocking sub-portions 1324 spaced apart from each other and arranged along the circumference of the first filtering function portion 1311. The second blocking sub-portions 1324 can be arranged between adjacent filtering function portions 131 according to the distribution of the filtering function portions 131. For example, when the filtering function portions 131 are arranged along rows and columns in the array substrate 1, part of the second blocking sub-portions 1324 can be located between the red filtering function portion 131 and the filtering function portion 131 adjacent to the red filtering function portion 131 along the row direction, and part of the second blocking sub-portions 1324 can be located between the red filtering function portion 131 and the filtering function portion 131 adjacent to the red filtering function portion 131 along the column direction.

[0086] In a possible implementation, Fig. 9 As shown, the first blocking portion 1321 includes a plurality of first blocking sub-portions 1322, and the plurality of first blocking sub-portions 1322 are arranged along the circumference of the first filtering function portion 1311, and the second blocking portion 1323 includes a plurality of second blocking sub-portions 1324, and when the plurality of second blocking sub-portions 1324 are arranged along the circumference of the first filtering function portion 1311, the second blocking sub-portions 1324 and the first blocking portion 1321 are arranged alternately along the circumference of the first filtering function portion 1311.

[0087] In the above embodiment, the colors of the plurality of filter function portions 131 located in the circumference of the first filter function portion 1311 are generally not completely the same, that is, the filter function portion 131 located in the circumference of the first filter function portion 1311 includes the second filter function portion 1312 and the third filter function portion 1313, and the first blocking portion 1321 has the same color as the second filter function portion 1312. Therefore, the first blocking portion 1321 can be arranged between the first filter function portion 1311 and the third filter function portion 1313. The light filtered by the first blocking portion 1321 does not only not include the light with the same color as the first filter function portion 1311, but also does not include the light with the same color as the third filter function portion 1313. Therefore, in addition to preventing the light with the same color as the first filter function portion 1311 from leaking out, the light with the same color as the third filter function portion 1313 can also be prevented from entering the area where the third filter function portion 1313 is located to affect the light output effect.

[0088] The second blocking portion 1323 has the same color as the third filtering function portion 1313, so the second blocking portion 1323 can be set between the first filtering function portion 1311 and the second filtering function portion 1312. The light filtered by the second blocking portion 1323 not only does not include the light with the same color as the first filtering function portion 1311, but also does not include the light with the same color as the second filtering function portion 1312. In addition, in addition to preventing the light with the same color as the first filtering function portion 1311 from leaking out, it can also prevent the light with the same color as the second filtering function portion 1312 from entering the area where the second filtering function portion 1312 is located and affecting the light output effect.

[0089] In a feasible embodiment, the orthographic projection of the first filtering function portion 1311 on the substrate 11 includes a central portion and an edge portion arranged around the central portion, the orthographic projection of the second blocking portion 1323 on the substrate 11 includes an edge portion, and the second blocking portion 1323 is located on a side surface of the first filtering function portion 1311 that is away from the substrate 11.

[0090] In the above embodiment, the second blocking portion 1323 is located at the edge position of the surface of the side of the first filtering function portion 1311 away from the substrate 11. Specifically, the orthographic projection of the edge position on the substrate 11 is located within the orthographic projection of the pixel defining layer 20 on the substrate 11. Therefore, on the one hand, it can further block the leakage light passing through the edge position of the main body of the pixel defining layer 20 from entering the area of ​​the first filtering function portion 1311, thereby reducing the probability of this part of the light leaking into the area of ​​the filtering function portion 131 of other colors. On the other hand, it can reduce the adverse effect on the aperture ratio of the sub-pixel caused by the light blocking effect of the second blocking portion 1323.

[0091] In the above embodiment, the first blocking portion 1321 located in the circumferential direction of the first light filtering functional portion 1311 blocks the circumferential light leakage, and the second blocking portion 1323 located at the edge of the first light filtering functional portion 1311 on the side surface facing away from the substrate 11 blocks the incident light at the edge, thereby further improving the light leakage and crosstalk problems. At the same time, the first blocking portion 1321 and the second light filtering functional portion 1312 can have the same color and material, and the second blocking portion 1323 and the third light filtering functional portion 1313 can have the same color and material, thereby facilitating the preparation of the first blocking portion 1321 and the second blocking portion 1323 separately.

[0092] In a possible implementation, Fig.10 As shown, the array substrate 1 further includes a flat layer 14 located on the side of the filter layer 13 away from the substrate 11 , and a portion of the flat layer 14 located on the side of the filter function portion 131 away from the substrate 11 has a thickness H, 0.2 μm≤H≤2 μm.

[0093] In the above embodiment, the array substrate 1 further includes a planar layer 14, which is formed on the side of the filter function portion 131 away from the substrate 11. The portion of the planar layer 14 located on the surface of the side of the filter function portion 131 away from the substrate 11 has a size of 0.2 μm-2 μm along the thickness direction of the array substrate 1. On the one hand, it prevents the distance between the light-emitting layer 21 and the filter layer 13 from being too far due to the planar layer 14 being too thick, thereby affecting the light output efficiency and the display effect. On the other hand, it prevents the planar layer 14 from being too thin and failing to achieve an effective planarization effect.

[0094] Specifically, the size of the portion of the planar layer 14 located on the surface of the side of the filtering function part 131 away from the substrate 11 along the thickness direction of the array substrate 1 can be 0.2μm, 0.3μm, 0.4μm, 0.8μm, 1.0μm, 1.2μm, 1.8μm, 2.0μm, etc.

[0095] In a feasible implementation manner, the method for preparing the array substrate 1 includes:

[0096] S200 , providing a substrate 11 .

[0097] S400, forming a driving circuit layer 12 on the substrate 11, specifically comprising:

[0098] First, a patterned light-shielding layer 123 is formed on the substrate 11, and then a buffer layer 124 is deposited on the entire surface, and then a patterned active layer 121 is formed, wherein the orthographic projection of the channel region in the active layer 121 on the substrate 11 is located within the orthographic projection of the light-shielding layer 123 on the substrate 11; then a gate 122 insulating layer is deposited, wherein the orthographic projection of the gate 122 insulating layer on the substrate 11 at least covers the orthographic projection of the channel region on the substrate 11; then a gate 122 is formed on the surface of the gate 122 insulating layer on the side facing away from the substrate 11, and then an interlayer dielectric layer 126 is deposited, and a first via hole 127 and a second via hole 128 are formed on the interlayer dielectric layer 126, wherein one first via hole 127 exposes a portion of the source region in the active layer 121, the other first via hole 127 exposes a portion of the drain electrode in the active layer 121, and the second via hole 128 exposes a portion of the light-shielding layer 123. Then, a source and a drain are formed on the side of the interlayer dielectric layer 126 facing away from the substrate 11 . The source is connected to the source region through the first via 127 and to the light shielding layer 123 through the second via 128 . The drain is connected to the drain region through the first via 127 .

[0099] Specifically, the orthographic projection of the active layer 121 on the substrate 11 may be located within the orthographic projection of the light shielding layer 123 on the substrate 11 .

[0100] S600, forming a filter layer 13 on a side of the driving circuit layer 12 facing away from the substrate 11, including:

[0101] When the first light filtering function part 1311 is surrounded by a light filtering blocking part 132, it specifically includes: Fig.11 As shown, a second filter function layer is formed and patterned to form a second filter function portion 1312 and a filter blocking portion 132, and the filter blocking portion 132 encloses a receiving space. Fig.12 As shown, a third filter function layer is then formed and patterned to form a third filter function portion 1313, and the third filter function portion 1313 is spaced apart from the second filter function portion 1312. A first filter function layer is then formed and patterned, as shown. Figure 2 As shown, a first light filtering function portion 1311 is formed, and the first light filtering function portion 1311 is located in the accommodating space.

[0102] In the above embodiment, the preparation order of the second filter function layer and the third filter function layer can be interchanged. The first filter function part 1311 can be red, the second filter function part 1312 can be one of blue and green, and the third filter function part 1313 can be the other of blue and green.

[0103] Also includes:

[0104] A planarization layer 14 is formed on the side of the filter layer 13 facing away from the substrate 11 .

[0105] A first electrode layer 15 is formed on a side of the planar layer 14 facing away from the substrate 11 . The first electrode layer 15 may be made of a transparent conductive material to achieve light emission from the substrate 11 side of the array substrate 1 .

[0106] In the above embodiment, when the filter function portion of the first color is surrounded by the filter blocking portion 132, the filter function layer of the first color may be prepared first, and then patterned to form the filter function portion 131 of the first color, and then the filter function layer of the second color may be formed and patterned to form the filter function portion 131 of the second color and the filter blocking portion 132, and the filter blocking portion 132 is located on the peripheral side of the filter function portion 131 of the single color. Then, the filter function layer of the third color may be formed and patterned to form the filter function portion 131 of the third color, and the filter function portion 131 of the third color may be arranged at an interval from the filter function portion 131 of the second color.

[0107] The present application also provides a display panel 2, such as Fig.13 and Fig.14 As shown, it includes any one of the array substrates 1 provided in the above embodiments.

[0108] The light leakage problem of the display panel 2 is significantly improved, especially the light leakage problem of red light, thereby improving the display effect of the display panel 2.

[0109] In a possible implementation, Fig.13 and Fig.14 As shown, it also includes a light-emitting layer 21 and a second electrode 22. The light-emitting layer 21 is located on the side of the filter layer 13 away from the substrate 11, and the second electrode 22 is located on the side of the light-emitting layer 21 away from the filter layer 13. The second electrode 22 is used to reflect the light emitted by the light-emitting layer 21.

[0110] In the above embodiment, the display panel 2 is a bottom-emitting display panel 2 , so the filter layer 13 is disposed in the array substrate 1 , and the light emitted by the light-emitting layer 21 is reflected by the second electrode 22 and then passes through the filter layer 13 and then emitted.

[0111] The second electrode 22 is a reflective electrode, and specifically can be made of a metal material with a high reflectivity.

[0112] The display panel 2 is prepared by:

[0113] An array substrate 1 is prepared; then, a pixel defining layer 20, a light emitting layer 21, and a second electrode 22 are sequentially formed on the surface of the first electrode layer 15 in the array substrate 1 on the side facing away from the substrate 11. The light emitted by the light emitting layer 21 passes through the small pixel defining layer 20 and then through the filter layer 13 before being emitted. When the filter blocking portion 132 is located around the red filter function portion 131, the light that cannot be blocked by the pixel defining layer 20 can be further intercepted by the filter blocking layer, thereby improving the cross-color defect caused by the red light scattering to the adjacent filter function portion 131 area.

[0114] The present application also provides another display panel 2, such as Fig.15 As shown, the display panel 2 includes an array substrate 1, a light emitting layer 21 and a filter layer 13, wherein the light emitting layer 21 is located on one side of the array substrate 1; the filter layer 13 is located on the side of the light emitting layer 21 away from the array substrate 1, and the filter layer 13 includes a plurality of color filter function parts 131, wherein the plurality of color filter function parts 131 include at least a first filter function part 1311, and a filter blocking part 132 is arranged around the first filter function part 1311, and the transmittance of the first filter function part 1311 to the light of the preset color is greater than the transmittance of the filter blocking part 132 to the light of the preset color. In the above embodiment, the display panel 2 is a top-emitting display panel 2, wherein the array substrate 1 includes a substrate 11 and a driving circuit layer 12 located on the substrate 11, but does not include the filter layer 13. The filter layer 13 is located on the side of the light emitting layer 21 away from the array substrate 1, and is used to filter the light emitted by the light emitting layer 21. When the light emitted by the light emitting layer 21 is white light, the white light becomes monochromatic light after passing through the filter layer 13, specifically including red light, green light and blue light. When the light emitting layer 21 emits red light, green light and blue light, the filter layer 13 has the effect of improving the purity of the light output. By providing a filter blocking portion 132 around the filter function portion 131, the probability of light crosstalking from the peripheral side of the filter function portion 131 to the area where the adjacent filter function portion 131 is located can be reduced, thereby effectively improving the display quality.

[0115] The display panel 2 further includes a light emitting layer 21 and a second electrode 22 . The light emitting layer 21 is located on the side of the filter layer 13 away from the substrate 11 . The second electrode 22 is located on the side of the light emitting layer 21 away from the filter layer 13 . The second electrode 22 is used to transmit light emitted by the light emitting layer 21 .

[0116] In the above embodiment, the display panel 2 is a top-emitting display panel 2 , and the light emitted by the light-emitting layer 21 passes through the second electrode 22 and then passes through the filter layer 13 before being emitted.

[0117] The second electrode 22 is a transmissive electrode, and specifically a thinner metal layer may be used.

[0118] The display panel 2 may further include an encapsulation layer 23 located on a side of the second electrode 22 away from the substrate 1 . The encapsulation layer 23 is used to encapsulate the light emitting layer 21 to improve the yield and service life of the display panel 2 .

[0119] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An array substrate, characterized in that: include: substrate; A driving circuit layer, located on one side of the substrate; The filter layer is located on the side of the driving circuit layer away from the substrate, and includes filter function parts of multiple colors, wherein the filter function parts of multiple colors include at least a first filter function part, and a filter blocking part is arranged around the first filter function part. The transmittance of the first filter function part to light of a preset color is greater than the transmittance of the filter blocking part to light of the preset color.

2. The array substrate according to claim 1, characterized in that: The material of the light filtering blocking portion is the same as the material of a type of light filtering functional portion other than the first light filtering functional portion.

3. The array substrate according to claim 1, characterized in that: The plurality of color filtering functional parts include a first filtering functional part and a second filtering functional part with different colors, the first filtering functional part is a red filtering functional part, the preset colors include red, the filtering blocking part is arranged around the first filtering functional part, the filtering blocking part includes at least a first blocking part, and the first blocking part has the same color as the second filtering functional part.

4. The array substrate according to claim 3, characterized in that: The first blocking portion is a continuous structure arranged around the first filtering function portion; or, the first blocking portion includes a plurality of first blocking sub-portions spaced apart from each other and arranged along the circumference of the first filtering function portion.

5. The array substrate according to claim 3, characterized in that: The color of the second filter function part is green or blue.

6. The array substrate according to claim 3, characterized in that: The plurality of color filtering function parts further include a third filtering function part having a different color from the first filtering function part and the second filtering function part, and the filtering blocking part further includes a second blocking part having the same color as the third filtering function part.

7. The array substrate according to claim 6, characterized in that: The second blocking portion is a continuous structure arranged around the first blocking portion; or, the second blocking portion includes a plurality of second blocking sub-portions spaced apart from each other and arranged along the circumference of the first blocking portion.

8. The array substrate according to claim 7, characterized in that: The first blocking portion includes a plurality of first blocking sub-portions, and the plurality of first blocking sub-portions are arranged along the circumference of the first filtering functional portion; and the second blocking portion includes a plurality of second blocking sub-portions, and when the plurality of second blocking sub-portions are arranged along the circumference of the first filtering functional portion, the second blocking sub-portions and the first blocking portion are staggered along the circumference of the first filtering functional portion.

9. The array substrate according to claim 6, characterized in that: The orthographic projection of the first filtering function portion on the substrate includes a central portion and an edge portion arranged around the central portion, the orthographic projection of the second blocking portion on the substrate includes the edge portion, and the second blocking portion is located on a side surface of the first filtering function portion facing away from the substrate.

10. The array substrate according to claim 7 or 8, characterized in that: The color of the second barrier portion is one of green and blue, and the color of the first barrier portion is the other of green and blue.

11. The array substrate according to claim 1, characterized in that: The array substrate further comprises a flat layer located on a side of the filter layer away from the substrate, and a portion of the flat layer located on a side of the filter function portion away from the substrate has a thickness H, 0.2 μm≤H≤2 μm.

12. The array substrate according to claim 1, characterized in that: The array substrate further includes a first electrode layer, which is located on a side of the filter layer away from the substrate, and includes a plurality of first electrodes arranged at intervals.

13. A display panel, characterized in that: An array substrate as described in any one of claims 1 to 12.

14. The display panel according to claim 13, characterized in that: It also includes a light-emitting layer and a second electrode. The light-emitting layer is located on the side of the filter layer away from the substrate. The second electrode is located on the side of the light-emitting layer away from the filter layer. The second electrode is used to reflect the light emitted by the light-emitting layer.

15. A display panel, characterized in that: include: An array substrate; A light emitting layer, located on one side of the array substrate; A filter layer is located on a side of the light-emitting layer away from the array substrate, the filter layer includes filter function parts of multiple colors, the filter function parts of multiple colors include at least a first filter function part, a filter blocking part is arranged around the first filter function part, and the transmittance of the first filter function part to light of a preset color is greater than the transmittance of the filter blocking part to light of the preset color.

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