Display panel and display device

Abstract

The invention discloses a display panel and a display device. A display panel of an embodiment includes: a pixel defining layer disposed on a substrate and having a plurality of first openings and a plurality of first sensor openings, the first sensor openings being located between at least two of the first openings; the black matrix layer comprises a plurality of second openings in one-to-one correspondence with the first openings and a plurality of second sensor openings in one-to-one correspondence with the first sensor openings; the color film layer comprises a first color film, a second color film and a third color film which are arranged in one-to-one correspondence with the second openings, the first color film, the second color film and the third color film have overlapping areas which are overlapped at the second sensor opening and an opening area surrounded by the overlapping areas, and the opening area is used for transmitting ambient light. According to the embodiment of the invention, the opening through which the ambient light penetrates is defined by the overlapping area of the first color film, the second color film and the third color film, so that human eyes are prevented from identifying the opening.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display devices, with their self-luminous characteristics, exhibit low driving voltage, high luminous efficiency, fast response time, excellent clarity and contrast, a wide viewing angle of nearly 180°, a wide operating temperature range, and unique transparency preparation capabilities.

[0003] The light transmittance of OLED devices based on COE (CF on EL) is very low, and it is necessary to collect ambient light through the sensor hole and sense the ambient light through the ambient light sensor for processing. On this basis, the integrated light enhancement technology (ES on COE, EIC) that combines ES and COE can improve the light output efficiency at the right viewing angle, but the manufacturing process causes the sensor opening size to be larger than the actual design value, which is easy to be recognized by the human eye. Summary of the invention

[0004] In order to solve at least one of the above problems, the present disclosure provides a display panel according to a first aspect, including:

[0005] substrate substrate;

[0006] A pixel defining layer is disposed on the base substrate and has a plurality of first openings and a plurality of first sensor openings, wherein the first sensor opening is located between at least two of the first openings;

[0007] A black matrix layer is arranged on a side of the pixel defining layer away from the base substrate, and the black matrix layer includes a plurality of second openings arranged in one-to-one correspondence with the first openings and a plurality of second sensor openings arranged in one-to-one correspondence with the first sensor openings;

[0008] The color filter layer is arranged on the side of the black matrix layer away from the base substrate, and includes a first color filter, a second color filter and a third color filter arranged in one-to-one correspondence with the second openings.

[0009] The first color film, the second color film, and the third color film have overlapping areas and opening areas surrounded by the overlapping areas at the second sensor opening, and the opening areas are used to transmit ambient light.

[0010] Optionally, the display panel further comprises: a light extraction layer disposed between the black matrix layer and the pixel defining layer, wherein the refractive index of the light extraction layer is smaller than the refractive index of the color filter layer.

[0011] The light extraction layer comprises a plurality of third openings, and the first color film, the second color film and the third color film are arranged in one-to-one correspondence with the third openings and are at least partially arranged in the third openings.

[0012] Optionally, the first color film in the overlapping area is connected to the first color film in the adjacent first opening as a whole.

[0013] The second color film in the overlapping area is connected to the second color film in the adjacent first opening as a whole.

[0014] The third color film in the overlapping area is connected to the third color film in the adjacent first opening as a whole.

[0015] Optionally, the diameter of the opening area is greater than or equal to 4 μm.

[0016] Optionally, a distance between an orthographic projection boundary of the first sensor opening on the substrate and an orthographic projection boundary of the opening area on the substrate is greater than or equal to 1 μm.

[0017] Optionally, the first color filter, the second color filter and the third color filter are sequentially stacked on the base substrate.

[0018] The color of the first color filter is one of red, green and blue, the color of the second color filter is one of red, green and blue, the color of the third color filter is one of red, green and blue, and

[0019] The first color filter, the second color filter and the third color filter have different colors.

[0020] Optionally, the light extraction layer includes: a plurality of fourth openings, wherein the orthographic projections of the fourth openings on the base substrate cover the orthographic projections of the first sensor openings on the base substrate,

[0021] The diameter of the opening area is d1, the distance between the orthographic projection boundary of the first sensor opening on the substrate and the orthographic projection boundary of the opening area on the substrate is d2,

[0022] The diameter of the fourth opening is greater than or equal to d1+d2+4 μm.

[0023] Optionally, the light extraction layer includes: a plurality of grooves, wherein the orthographic projections of the grooves on the base substrate cover the orthographic projections of the first sensor opening on the base substrate,

[0024] The diameter of the opening area is d1, the distance between the orthographic projection boundary of the first sensor opening on the substrate and the orthographic projection boundary of the opening area on the substrate is d2,

[0025] The diameter of the groove is greater than or equal to d1+d2+4μm,

[0026] The depth of the groove is greater than or equal to the sum of the thickness of the first color film on the black matrix layer, the thickness of the second color film on the black matrix layer, and the thickness of the third color film on the black matrix layer.

[0027] Optionally, the orthographic projection of the opening areas of the first color filter, the second color filter and the third color filter on the base substrate is an arc, a square or other polygonal shape.

[0028] The outer contour of the orthographic projection of the overlapping area of ​​the first color filter, the second color filter and the third color filter on the base substrate is an arc, a square or other polygon.

[0029] A second aspect of the present disclosure provides a display device, comprising the display panel as described above.

[0030] The beneficial effects of the present disclosure are as follows:

[0031] In view of the existing problems, the present disclosure develops a display panel and a display device, and arranges a first color film, a second color film and a third color film to include overlapping areas that overlap at the same time, and uses the overlapping areas to define an opening for passing ambient light, so that the size of the opening for passing ambient light does not need to be affected by the peeling of the black matrix, thereby avoiding the sensor opening cup from being recognized by the human eye, improving the display effect, and having broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram showing the EIC technology structure of the related art;

[0034] Figure 2 A process flow comparison diagram showing the EIC technology and COE technology of the related technology;

[0035] Figure 3 A diagram showing a comparison between a design value and an actual value of a BM sensor opening in the related art;

[0036] Figure 4 A schematic cross-sectional view showing a display panel according to an embodiment of the present disclosure;

[0037] Figure 5 A layered top view of a display panel according to an embodiment of the present disclosure is shown;

[0038] Figure 6 A layered top view of a display panel according to another embodiment of the present disclosure is shown;

[0039] Figures 7 to 10 A schematic cross-sectional view showing a display panel according to another embodiment of the present disclosure;

[0040] Fig.11 Show according to Fig.10 A layered top view of a display panel of the illustrated embodiment. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the present disclosure, the present disclosure is further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present disclosure.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantitative restrictions, but indicate that there is at least one. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0043] In the present disclosure, the term "co-layer arrangement" used refers to two layers, parts, components, elements or parts that can be formed by the same preparation process (such as a patterning process, etc.), and the two layers, parts, components, elements or parts are generally formed of the same material. For example, two or more functional layers are co-layered, which means that these co-layered functional layers can be formed using the same material layer and the same preparation process, thereby simplifying the preparation process of the display substrate.

[0044] In addition, the present disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0045] EIC technology is an integrated technology that improves light extraction efficiency. Figure 1 As shown in the figure, EIC mainly utilizes the total reflection effect between high-refractive color resin material (i.e., color film layer) and low-refractive TOC (Total Organic Carbon) material (i.e., organic packaging material layer, referred to as EOC) to improve the front-viewing angle light output efficiency of the light-emitting device. The figure does not reflect the actual morphology of the black matrix (BM) arranged on the organic packaging material layer.

[0046] In the actual process, the morphology of the black matrix BM is an inverted trapezoid. Specifically, Figure 2 A process flow chart is shown, in which the first row is the same steps for COE technology and EIC technology, the second and third rows are the different steps for COE and EIC, and the second row is the manufacturing process of COE, and the third row is the manufacturing process of EIC. Figure 2 As shown, firstly, BM material is coated on the substrate. BM material is a negative photoresist material. The coating thickness of COE technology is smaller than that of EIC technology. Then, it is soft-baked. The soft-baking time of EIC technology is usually shorter than that of COE technology. Then, it is exposed based on the pattern of the mask. The exposed area is cross-linked and cured. Because BM absorbs light, the curing degree of the upper layer of the film is greater than that of the bottom layer. Then, the exposed material is developed. The developing time of EIC technology needs to be greater than that of COE technology, which leads to a significant increase in the bottom cutting depth of the inverted trapezoid after development, resulting in the tip of the inverted trapezoid (the position within the dotted circle in the figure) being weaker. Then, in the rinsing step, it is impacted by the rinsing water flow. Since the tip of the inverted trapezoid is weak and lacks support, it is easily broken, resulting in partial sharp corner peeling. Finally, after hard baking, the peeling position causes the opening size of the BM to become larger.

[0047] Combination Figure 3 As shown, when the BM is peeled off at a sharp corner, the size of the opening finally formed for transmitting ambient light is significantly larger than the design value. As a result, the reflectivity of the opening area used for sensor sensing increases after the size increases, and the reflectivity difference with other areas increases, which is easily recognized by the human eye, thus affecting the display effect.

[0048] In view of at least one of the above problems, an embodiment of the present disclosure provides a display panel, including:

[0049] substrate substrate;

[0050] A pixel defining layer, disposed on the base substrate and having a plurality of first openings and a plurality of first sensor openings, wherein the first sensor opening is located between at least two of the first openings;

[0051] A black matrix layer is arranged on a side of the pixel defining layer away from the base substrate, the black matrix layer comprising a plurality of second openings arranged in one-to-one correspondence with the first openings and a plurality of second sensor openings arranged in one-to-one correspondence with the first sensor openings;

[0052] The color filter layer is arranged on the side of the black matrix layer away from the base substrate, and includes a first color filter, a second color filter and a third color filter arranged in one-to-one correspondence with the second openings.

[0053] The first color film, the second color film, and the third color film have overlapping areas and opening areas surrounded by the overlapping areas at the second sensor opening, and the opening areas are used to transmit ambient light.

[0054] In this embodiment, the first color film, the second color film and the third color film include overlapping areas that overlap at the same time, and the overlapping areas are used to define an opening for passing ambient light, so that the size of the opening for passing ambient light does not need to be affected by the peeling of the black matrix, thereby avoiding the sensor opening cup from being recognized by the human eye and improving the display effect.

[0055] In order to illustrate the structure and function of the present disclosure, a detailed description is given below in conjunction with specific examples.

[0056] In a specific example, refer to Figure 4 As shown, the display panel includes: a base substrate 100 , a pixel defining layer 201 , a black matrix layer 301 , and a color filter layer, wherein the color filter layer includes a first color filter 312 , a second color filter 322 , and a third color filter 332 .

[0057] Specifically, refer to Figure 4 As shown, the pixel defining layer 201 is disposed on the base substrate 100 and has a plurality of first openings KK1 and a plurality of first sensor openings CK1, and the first sensor opening CK1 is located between at least two first openings KK1, that is, the pixel defining layer 201 defines the first openings KK1 as pixel openings and the first sensor openings CK1 for transmitting ambient light. The first sensor openings CK1 are used to transmit ambient light, and their density and number are determined according to the display requirements of a specific display product.

[0058] Continue to refer to Figure 4 As shown, the pixel defining layer 201 may be made of an opaque material, for example, the material of the pixel defining layer 201 may be the same as that of the black matrix layer 301. When the material of the pixel defining layer 201 is the same as that of the black matrix layer 301, both may be black resin with negative photoresist.

[0059] Further references Figure 4As shown, an anode layer may be further included between the pixel defining layer 201 and the base substrate 201, and the side of the pixel defining layer 201 away from the base substrate 100 includes a light-emitting layer covering the first opening KK1, and the light-emitting layer includes a first light-emitting layer 213 emitting a first color light, a second light-emitting layer 223 emitting a second color light, and a third light-emitting layer 233 emitting a third color light, and no light-emitting layer is provided in the first sensor opening CK1. The anode layer includes a first anode 212, a second anode 222, and a third anode 232 corresponding to the first light-emitting layer 213, the second light-emitting layer 223, and the third light-emitting layer 233.

[0060] Continue to refer to Figure 4 As shown, the side of the light emitting layer away from the substrate 100 also includes a cathode layer 204. Figure 4 The cathode layer 204 is shown as a whole-layer film layer. In this case, in order to transmit ambient light, the cathode layer 204 should be a conductive transparent or semi-transparent film layer. Those skilled in the art should understand that the present disclosure is not intended to limit the structure of the cathode layer. If necessary, the cathode layer 204 can also be a patterned film layer in some cases to increase light transmittance, which will not be described in detail herein.

[0061] Alternatively, refer to Figure 4 As shown, an encapsulation layer 500 is further included between the cathode layer 204 and the black matrix layer 301 , and a protective layer is further included on the side of the color filter layer away from the base substrate 100 .

[0062] Continue to refer to Figure 4 As shown, the black matrix layer 301 is arranged on the side of the pixel defining layer 201 away from the base substrate 100. The black matrix layer 301 includes a plurality of second openings KK2 arranged in one-to-one correspondence with the first openings KK1 and a plurality of second sensor openings CK2 arranged in one-to-one correspondence with the first sensor openings CK1. The color filter layer is arranged on the side of the black matrix layer 301 away from the base substrate 100. The color filter layer includes a first color filter 312, a second color filter 322 and a third color filter 332 arranged in one-to-one correspondence with the second openings KK2. It should be understood that the color of the first color filter 312 is the same as the color of the light emitted from the first light-emitting layer 213, the color of the second color filter 322 is the same as the color of the light emitted from the second light-emitting layer 223, and the color of the third color filter 332 is the same as the color of the light emitted from the third light-emitting layer 233.

[0063] In particular, the first color filter 312 , the second color filter 322 , and the third color filter 332 have overlapping regions and an opening region CK3 surrounded by the overlapping regions at the second sensor opening CK2 , and the opening region CK3 is used to transmit ambient light.

[0064] Through this setting, an opaque area is formed by the overlapping area formed by superimposing three colors of color films, and the overlapping area surrounds the opening area as a film layer structure that limits the sensor opening, thereby avoiding the problem of the sensor opening being recognized by the human eye due to the peeling problem that deviates from the design size during the process of manufacturing the black matrix layer, thereby improving display uniformity and enhancing user experience.

[0065] Continue to refer to Figure 4 As shown, the structure of the embodiment of the present disclosure is particularly advantageous for display products of EIC technology. That is, optionally, the display panel further includes: a light extraction layer 303 disposed between the black matrix layer 301 and the pixel definition layer 201 .

[0066] Specifically, the light extraction layer 303 includes a plurality of third openings CK3, and the first color film 312, the second color film 322, and the third color film 332 are arranged one by one in correspondence with the third openings CK3 and at least partially arranged in the third openings CK3. The refractive index of the light extraction layer 303 is less than that of the color filter layer, and the material of the light extraction layer 303 can be a low-refractive TOC material. The light extraction layer 303 improves the light extraction efficiency by the difference in refractive index with the color filter layer.

[0067] Optionally, refer to Figure 4 As shown, the aperture d1 of the opening area CK3 is greater than or equal to 4μm. The specific value of d1 is determined according to the transmittance requirements of the product. The larger the value of d1, the greater the ambient light transmittance and the higher the reflectivity. The smaller the value of d1, the smaller the ambient light transmittance and the lower the reflectivity. Of course, the size of d1 cannot be too large. If it is too large, there will be too much light leakage, and there will be visible differences from other areas.

[0068] In addition, in order to form the opening size set by the diameter d1 of the opening area CK3, the second sensor opening CK2 should cover the first sensor opening CK1. Considering the process error, in order to ensure the above-mentioned covering relationship, the orthographic projection boundary of the first sensor opening CK1 on the base substrate 100 and the orthographic projection boundary of the opening area CK3 on the base substrate 100 should have a distance d2.

[0069] Optionally, a distance d2 between an orthographic projection boundary of the first sensor opening CK1 on the base substrate 100 and an orthographic projection boundary of the opening area CK3 on the base substrate 100 is greater than or equal to 1 μm.

[0070] Of course, considering that the internal light passes through the internal film layer, such as metal reflection, and enters from the first sensing opening CK1 to the bottom, thus affecting the sensor below, the distance d2 cannot be set too large.

[0071] Considering that the second sensor opening CK2 is disposed in the black matrix layer 301, and the opening area CK3 is usually disposed adjacent to the second opening KK2, although the first color filter 312, the second color filter 322, and the third color filter 332 overlap at the same time, they are sufficient to define the opening area CK3, and thus the black matrix layer 301 needs to be retained around the opening area CK3. Optionally, the width of the black matrix layer 301 surrounding the opening area CK3 is greater than or equal to 3 um, and this size limitation is intended to ensure that the mask used to form the pattern of the black matrix layer 301 can achieve an exposable pattern distance.

[0072] Combination Figure 4 and Figure 5 As shown, since the size of the opening area CK3 is very small and the spacing between the two second openings KK2 is very small, the color filter layer in the overlapping area is a small ring structure. From a process perspective, a mask is usually required to form the patterns of the first color filter 312, the second color filter 322 and the third color filter 332.

[0073] More preferably, in order to enable the mask template of the corresponding pattern in the overlapping area to expose the corresponding pattern, the first color film 312 in the overlapping area is connected as a whole with the first color film 312 in the adjacent first opening KK1, the second color film 322 in the overlapping area is connected as a whole with the second color film 322 in the adjacent first opening KK1, and the third color film 332 in the overlapping area is connected as a whole with the third color film 332 in the adjacent first opening KK1.

[0074] Continue to refer to Figure 5 As shown, the corresponding overlapping areas and opening areas in the first color filter 312, the second color filter 322 and the third color filter 332 are circled with dotted line frames.

[0075] As can be seen from the figure, in this example, the orthographic projection outer contour of the overlapping area of ​​the first color filter 312, the second color filter 322 and the third color filter 332 on the base substrate 100 is an arc shape. Of course, in this example, the orthographic projection of the opening area on the base substrate 100 is also an arc shape.

[0076] Alternatively, refer to Figure 6 As shown, the orthographic projection outer contour of the overlapping area of ​​the first color filter 312, the second color filter 322 and the third color filter 332 on the base substrate 100 is a square. Of course, in this example, the orthographic projection of the opening area on the base substrate 100 is also a square.

[0077] Of course, the outer contour shape of the orthographic projection of the overlapping area on the substrate in the embodiment of the present disclosure is not limited to Figure 5 and Figure 6 The shape shown may also be other polygons, which will not be described in detail in this article.

[0078] Continue to refer to Figure 4 As shown, the first color film 312, the second color film 322 and the third color film 332 are stacked in sequence on the base substrate 100, and the color of the first color film 312 is the first color, the color of the second color film 322 is the second color, and the color of the third color film 332 is the third color, and the first color, the second color and the third color are different.

[0079] In this example, the color of the first color film 312 is red, the color of the second color film 322 is green, and the color of the third color film 332 is blue. That is, in the second sensor opening CK2, in the direction away from the base substrate 100, there are the red first color film 312, the green second color film 322 and the blue third color film 332 in sequence.

[0080] Alternatively, refer to Figure 7 As shown, the first color film 312, the second color film 322 and the third color film 332 are stacked in sequence on the base substrate 100, and the color of the first color film 312 is the first color, the color of the second color film 322 is the second color, and the color of the third color film 332 is the third color, and the first color, the second color and the third color are different.

[0081] In this example, the color of the first color film 312 is green, the color of the second color film 322 is blue, and the color of the third color film 332 is red. That is, in the second sensor opening CK2, in the direction away from the base substrate 100, there are the green first color film 312, the blue second color film 322 and the red third color film 332 in sequence.

[0082] Alternatively, refer to Figure 8 In this example, the color of the first color film 312 is red, the color of the second color film 322 is blue, and the color of the third color film 332 is green, that is, in the second sensor opening CK2, in the direction away from the base substrate 100, the first color film 312 is red, the second color film 322 is blue, and the third color film 332 is green.

[0083] Alternatively, refer to Fig. 9 In this example, the color of the first color film 312 is blue, the color of the second color film 322 is green, and the color of the third color film 332 is red, that is, in the second sensor opening CK2, in the direction away from the base substrate 100, the blue first color film 312, the green second color film 322 and the red third color film 332 are arranged in sequence.

[0084] Of course, although not further shown, within the second sensor opening CK2, in the direction away from the base substrate 100, the film colors of the color film layer can also be a green first color film 312, a red second color film 322 and a blue third color film 332 in sequence; or the film colors of the color film layer can also be a blue first color film 312, a red second color film 322 and a green third color film 332 in sequence.

[0085] Considering that in order to achieve opacity in the stacking area, three color films need to overlap simultaneously to form an overlapping area, such a structure will increase the local thickness of the overlapping area. In order to reduce the stacking thickness of the local area above the sensor, an embodiment of the present disclosure proposes another implementation method.

[0086] In another implementation, referring to Fig.10 As shown, the display panel includes: a base substrate 100, a pixel defining layer 201, a light extraction layer 303, a black matrix layer 301, and a color filter layer, wherein the color filter layer includes a first color filter 312, a second color filter 322, and a third color filter 332. The refractive index of the light extraction layer 303 is less than that of the color filter layer.

[0087] Similar to the above embodiments, the pixel defining layer 201 has a plurality of first openings KK1 and a plurality of first sensor openings CK1, and the first sensor opening is located between at least two of the first openings; the black matrix layer 301, the black matrix layer 301 includes a plurality of second openings KK2 arranged in a one-to-one correspondence with the first openings KK1 and a plurality of second sensor openings CK2 arranged in a one-to-one correspondence with the first sensor openings CK1; the light extraction layer 303 includes a plurality of third openings KK3, and the first color film 312, the second color film 322 and the third color film 332 are arranged in the first openings KK3 in a one-to-one correspondence.

[0088] In particular, refer to Fig.10 As shown, the light extraction layer 303 further includes: a plurality of fourth openings CK4 , and the orthographic projections of the fourth openings CK4 on the base substrate 100 cover the orthographic projections of the first sensor openings CK1 on the base substrate 100 .

[0089] Moreover, the aperture of the opening area CK3 is d1, the distance between the orthographic projection boundary of the first sensor opening CK1 on the base substrate 100 and the orthographic projection boundary of the opening area CK3 on the base substrate 100 is d2, and the aperture of the fourth opening CK4 is greater than or equal to d1+d2+4 μm.

[0090] Through this arrangement, it can be understood that the overlapping area formed by the first color film 312 , the second color film 322 , and the third color film 332 will be located in the fourth opening CK4 and in the second sensor opening CK2 .

[0091] Through the above arrangement, by forming a fourth opening in the light extraction layer 303, which is equivalent to taking out the thickness of a part of the area, the thickness of the removed light extraction layer 303 is used to accommodate the thickness of the film layer in the overlapping area, thereby reducing the stacking thickness.

[0092] It should be particularly pointed out that when the fourth opening CK4 is set to cover the first sensor opening CK1, it can be ensured that the opaque material filled in the fourth opening CK4 can be sufficient to serve as a light shielding function for the black matrix layer 301 above it before the light extraction layer 303 is removed. In addition, when the diameter of the fourth opening CK4 is set to be greater than or equal to d1+d2+4μm, it can be ensured that the diameter of the fourth opening CK4 is sufficient to smooth out the overlapping protrusion height of the first color film, the second color film and the third color film, as well as the protrusion height of each color film at the overlapping position of the black matrix layer.

[0093] Reference Fig.11 As shown in the figure, the structure of this embodiment is shown in the top view of each film layer alone and the top view of a plurality of film layers stacked. Fig.11 It can be seen that the smallest opening in the black matrix layer 301 is the second sensor opening CK2, and the smallest opening in the light extraction layer 303 is the fourth opening CK4. The last top view in the first row shows the effect of the stacking of the black matrix layer 301 and the light extraction layer 303. The fourth opening CK4 covers the second sensor opening CK2, thereby ensuring the thinning of the stacked film layer. Similarly, the second to last top view in the second row shows the stacking relationship between the light extraction layer 303 and the third color film 332. Similarly, the orthographic projection of the fourth opening CK4 on the base substrate covers the orthographic projection of the stacking area of ​​the third color film 332 on the base substrate, thereby ensuring the thinning of the stacked film layer.

[0094] It should be noted that the parts of this embodiment that are the same as those in the above embodiments will not be described in detail here.

[0095] In some other optional embodiments, the thinning of the light extraction layer does not necessarily form an opening that penetrates the light extraction layer. For example, a local groove can be formed in the light extraction layer to achieve the purpose of thinning. Specifically, the light extraction layer includes: a plurality of grooves, the orthographic projection of the groove on the base substrate covers the orthographic projection of the first sensor opening on the base substrate, the aperture of the opening area is d1, the distance between the orthographic projection boundary of the first sensor opening on the base substrate and the orthographic projection boundary of the opening area on the base substrate is d2, the aperture of the groove is greater than or equal to d1+d2+4μm, and the depth of the groove is greater than or equal to the sum of the thickness of the first color film on the black matrix layer, the thickness of the second color film on the black matrix layer, and the thickness of the third color film on the black matrix layer.

[0096] It should be noted that the parts of this embodiment that are the same as those in the above embodiments will not be described in detail here.

[0097] Based on the same inventive concept, an embodiment of the present disclosure further provides a display device, including the display panel described in the above embodiment. Since the display panel included in the display device provided in the embodiment of the present disclosure corresponds to the display panel provided in the above embodiment, the previous implementation is also applicable to the display device provided in this embodiment, and will not be described in detail in this embodiment.

[0098] In this embodiment, the display device can be any product or component with display function, such as a vehicle-mounted display device, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame or a navigator. When the above display panel is loaded in a real device, the human eye cannot recognize the sensor opening set in the display area of ​​the display panel, which significantly improves the user experience.

[0099] In view of the existing problems, the present disclosure develops a display panel and a display device, and arranges a first color film, a second color film and a third color film to include overlapping areas that overlap at the same time, and uses the overlapping areas to define an opening for passing ambient light, so that the size of the opening for passing ambient light does not need to be affected by the peeling of the black matrix, thereby avoiding the sensor opening cup from being recognized by the human eye, improving the display effect, and having broad application prospects.

[0100] Obviously, the above embodiments of the present disclosure are merely examples for clearly illustrating the present disclosure, and are not limitations on the implementation methods of the present disclosure. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present disclosure are still within the protection scope of the present disclosure.

Claims

1. A display panel, characterized in that: include: substrate substrate; A pixel defining layer, disposed on the base substrate and having a plurality of first openings and a plurality of first sensor openings, wherein the first sensor openings are located between at least two of the first openings; a black matrix layer, disposed on a side of the pixel defining layer away from the base substrate, the black matrix layer comprising a plurality of second openings disposed in one-to-one correspondence with the first openings and a plurality of second sensor openings disposed in one-to-one correspondence with the first sensor openings; a color filter layer, arranged on the side of the black matrix layer away from the base substrate, comprising a first color filter, a second color filter and a third color filter arranged in one-to-one correspondence with the second openings, The first color film, the second color film, and the third color film have overlapping areas that overlap at the second sensor opening and an opening area surrounded by the overlapping areas, and the opening area is used to transmit ambient light.

2. The display panel according to claim 1, characterized in that: Also includes: A light extraction layer is disposed between the black matrix layer and the pixel defining layer, wherein the refractive index of the light extraction layer is smaller than the refractive index of the color filter layer. The light extraction layer includes a plurality of third openings, and the first color film, the second color film and the third color film are arranged in one-to-one correspondence with the third openings and are at least partially arranged in the third openings.

3. The display panel according to claim 1, characterized in that: The first color film in the overlapping area is connected to the first color film in the adjacent first opening as a whole. The second color film in the overlapping area is connected to the second color film in the adjacent first opening as a whole. The third color film in the overlapping area is connected to the third color film in the adjacent first opening as a whole.

4. The display panel according to claim 1, characterized in that: The diameter of the opening area is greater than or equal to 4 μm.

5. The display panel according to claim 1, characterized in that: A distance between an orthographic projection boundary of the first sensor opening on the base substrate and an orthographic projection boundary of the opening region on the base substrate is greater than or equal to 1 μm.

6. The display panel according to claim 1, characterized in that: The first color filter, the second color filter and the third color filter are sequentially stacked on the base substrate. The color of the first color filter is one of red, green and blue, the color of the second color filter is one of red, green and blue, the color of the third color filter is one of red, green and blue, and The first color filter, the second color filter and the third color filter have different colors.

7. The display panel according to claim 2, characterized in that: The light extraction layer comprises: a plurality of fourth openings, wherein the orthographic projection of the fourth opening on the base substrate covers the orthographic projection of the first sensor opening on the base substrate, The aperture of the opening area is d1, the distance between the orthographic projection boundary of the first sensor opening on the substrate and the orthographic projection boundary of the opening area on the substrate is d2, The diameter of the fourth opening is greater than or equal to d1+d2+4 μm.

8. The display panel according to claim 2, characterized in that: The light extraction layer comprises: a plurality of grooves, wherein the orthographic projection of the grooves on the base substrate covers the orthographic projection of the first sensor opening on the base substrate, The aperture of the opening area is d1, the distance between the orthographic projection boundary of the first sensor opening on the substrate and the orthographic projection boundary of the opening area on the substrate is d2, The diameter of the groove is greater than or equal to d1+d2+4μm, The depth of the groove is greater than or equal to the sum of the thickness of the first color film on the black matrix layer, the thickness of the second color film on the black matrix layer, and the thickness of the third color film on the black matrix layer.

9. The display panel according to claim 1, characterized in that: The orthographic projection of the opening areas of the first color filter, the second color filter and the third color filter on the base substrate is an arc, a square or other polygonal shape. The outer contour of the orthographic projection of the overlapping area of ​​the first color filter, the second color filter and the third color filter on the base substrate is an arc, a square or other polygon.

10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 9.

Images