Display panel and display apparatus

Abstract

The present disclosure belongs to the technical field of display, and provides a display panel and a display apparatus, which can solve the problems of color inconsistency and bad overall black effect of display areas and peripheral areas of existing display panels in a dark state. The display panel of the present disclosure has a display area and a peripheral area surrounding the display area. The display panel comprises: a first substrate and a second substrate which are arranged opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate, the second substrate comprising a black matrix layer. The display panel further comprises a reflecting layer located on the side of the first substrate close to the liquid crystal layer. The black matrix layer and the reflecting layer both extend from the display area to the peripheral area. The black matrix layer is provided with a plurality of first openings, the first openings being arranged in a first direction. In the display area and the peripheral area, in a second direction, the widths of each first opening are equal to each other, and the distances between adjacent first openings are equal to each other, the first direction intersecting the second direction.

Description

Display panel and display device Technical Field

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

[0002] Liquid crystal display (LCD) panels are widely used due to their low power consumption and excellent display quality. They consist of an array substrate and a color filter substrate positioned opposite each other, with a liquid crystal layer interposed between them. Because liquid crystals themselves do not emit light, LCDs require a light source to display images. Depending on the type of light source used, LCDs can be categorized as transmissive, reflective, and transflective.

[0003] For reflective liquid crystal display panels and semi-transmissive and semi-reflective liquid crystal display panels, their dark state is usually achieved through the combined action of a compensation film and a liquid crystal layer. However, due to the different structures of the display area and the peripheral area in the visible area, the two areas reflect light to different degrees, resulting in the color of the display area being lighter than the color of the peripheral area in the dark state, and the integrated black effect is poor, affecting the user's visual experience.

[0004] Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a display panel and a display device.

[0006] In a first aspect, embodiments of the present disclosure provide a display panel having a display area and a peripheral area surrounding the display area, wherein the display panel comprises: a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer located between the first substrate and the second substrate; the second substrate comprises a black matrix layer; and the display panel further comprises: a reflective layer located on a side of the first substrate close to the liquid crystal layer;

[0007] The black matrix layer and the reflective layer both extend from the display area to the peripheral area, and the black matrix layer is provided with a plurality of first openings; the first openings are arranged along a first direction;

[0008] In the display area and the peripheral area, along the second direction, the width of each of the first openings is equal, and the spacing between at least some adjacent first openings is equal; the first direction intersects with the second direction.

[0009] In some embodiments, the display panel further includes: a first compensation film and a first polarizer disposed sequentially on a side of the second substrate facing away from the liquid crystal layer;

[0010] The orthographic projections of the first compensation film and the first polarizer on the first substrate overlap with the orthographic projection of the black matrix layer on the first substrate.

[0011] In some embodiments, the first substrate includes: a first base, a plurality of data lines and gate lines located on the first base and intersecting with each other; the reflective layer is provided with a first slit and a second slit; the black matrix layer includes: a first black matrix strip and a second black matrix strip; the data lines, the first slit, and the first black matrix strip are all arranged along a first direction, and the gate lines, the second slit, and the second black matrix strip are all arranged along a second direction;

[0012] The data lines and the first slits are arranged in the display area, the gate lines, the second slits and the second black matrix strips extend from the display area to the peripheral area, and the second black matrix strips are arranged in the display area and the peripheral area;

[0013] In the display area, the orthographic projections of the data lines, the first gaps, and the first black matrix strips on the first substrate at least partially overlap;

[0014] In the peripheral area, the orthographic projections of the gate lines, the second gaps, and the second black matrix strips on the first substrate at least partially overlap;

[0015] In the display area and the peripheral area, along the second direction, at least some adjacent first black matrix strips are spaced at equal intervals.

[0016] In some embodiments, the first substrate includes: a first base, a plurality of data lines and gate lines located on the first base and intersecting with each other; the reflective layer is provided with a first slit; the black matrix layer includes: a first black matrix strip; the gate lines, the first slit, and the first black matrix strip are all arranged along a first direction, and the gate lines are arranged along a second direction;

[0017] The data lines and the first gaps are arranged in the display area, the gate lines extend from the display area to the peripheral area, and the first black matrix strips are arranged in the display area and the peripheral area;

[0018] In the display area, the orthographic projections of the data lines, the first gaps, and the first black matrix strips on the first substrate at least partially overlap;

[0019] In the peripheral area, the reflective layer is provided on the entire surface;

[0020] In the display area and the peripheral area, along the second direction, at least some adjacent first black matrix strips are spaced at equal intervals.

[0021] In some embodiments, the display panel further comprises: an organic buffer layer;

[0022] The organic buffer layer is located on a side of the reflective layer close to the first substrate.

[0023] In some embodiments, a plurality of protrusions are provided on a side of the organic buffer layer close to the reflective layer;

[0024] The reflective layer covers at least one surface of the protrusion.

[0025] In some embodiments, the second substrate further comprises: a plurality of color filters;

[0026] In the display area and the peripheral area, the color filter is filled in the first opening formed by adjacent first black matrix strips.

[0027] In some embodiments, a thickness of the color filter in the display area is greater than a thickness of the color filter in the peripheral area.

[0028] In some embodiments, the first substrate further comprises: a passivation layer and a pixel electrode sequentially disposed on a side of the data line away from the first base;

[0029] The pixel electrode is connected to the data line through a first via hole penetrating the passivation layer.

[0030] In some embodiments, the first substrate further includes: a common electrode; the common electrode includes: a first sub-common electrode and a second sub-common electrode;

[0031] The first sub-common electrode is disposed in the same layer as the gate line; and the second sub-common electrode is disposed in the same layer as the data line.

[0032] In some embodiments, the first substrate further comprises: a gate insulating layer located between the gate line and the data line;

[0033] The first sub-common electrode is connected to the switching electrode through a second via hole penetrating the gate insulating layer and the passivation layer; the second sub-common electrode is connected to the switching electrode through a third via hole penetrating the passivation layer.

[0034] In some embodiments, the switching electrode and the pixel electrode are provided in the same layer.

[0035] In some embodiments, the switching electrode is connected to the reflective layer through a fourth via hole penetrating the organic buffer layer.

[0036] In some embodiments, the first substrate further comprises: a thin film transistor located on the first base;

[0037] The gate electrode of the thin film transistor is connected to the gate line, the source electrode is connected to the data line, and the drain electrode is connected to the pixel electrode.

[0038] In some embodiments, the display area includes: a reflective area and a transmissive area; in the reflective area, the organic buffer layer and the reflective layer are both provided on the entire surface;

[0039] In the transmission area, the organic buffer layer and the reflective layer are respectively provided with a second opening and a third opening; orthographic projections of the second opening and the third opening on the first substrate at least partially overlap.

[0040] In some embodiments, the display panel further includes: a second compensation film and a second polarizer sequentially disposed on a side of the first substrate facing away from the liquid crystal layer;

[0041] The second compensation film and the first compensation film have the same compensation phase difference;

[0042] The polarization directions of the second polarizer and the first polarizer intersect.

[0043] In some embodiments, the display panel further includes: a spacer located between the first substrate and the second substrate;

[0044] The orthographic projection of the first black matrix strip on the first substrate covers the orthographic projection of the spacer on the first substrate.

[0045] In a second aspect, an embodiment of the present disclosure provides a display device, wherein the display device includes the display panel provided as described above.

[0046] In some embodiments, the display device further comprises: a backlight module;

[0047] The backlight module is located on a side of the second polarizer away from the liquid crystal layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a schematic diagram of a planar structure of an exemplary display panel.

[0049] FIG2 is a schematic diagram of an exemplary layout structure of a display panel.

[0050] FIG3 a is a schematic diagram of a cross-sectional structure of a reflective area in an exemplary display panel.

[0051] FIG3 b is a schematic diagram of a cross-sectional structure of a transmission area in an exemplary display panel.

[0052] FIG3 c is a schematic diagram of a cross-sectional structure of a non-opening area in an exemplary display panel.

[0053] FIG3 d is a schematic diagram of a cross-sectional structure of a peripheral area in an exemplary display panel.

[0054] FIG4 a is a schematic diagram of a layout structure of a display panel provided in an embodiment of the present disclosure.

[0055] FIG4 b is a schematic diagram of the layout structure of a first substrate in a display panel provided in an embodiment of the present disclosure.

[0056] FIG4 c is a schematic diagram of the layout structure of a reflective layer in a display panel provided in an embodiment of the present disclosure.

[0057] FIG4 d is a layout structure view of a second substrate in a display panel provided by an embodiment of the present disclosure.

[0058] FIG5 a is a schematic diagram of a cross-sectional structure of a reflective area in a display panel provided by an embodiment of the present disclosure.

[0059] FIG5 b is a schematic diagram of a cross-sectional structure of a transmission area in a display panel provided by an embodiment of the present disclosure.

[0060] FIG5 c is a schematic diagram of a cross-sectional structure of a non-opening area in a display panel provided by an embodiment of the present disclosure.

[0061] FIG5 d is a schematic diagram of a cross-sectional structure of a peripheral area in a display panel provided by an embodiment of the present disclosure.

[0062] FIG6 a is a schematic diagram of the layout structure of another display panel provided in an embodiment of the present disclosure.

[0063] FIG6 b is a schematic diagram of the layout structure of a first substrate in another display panel provided in an embodiment of the present disclosure.

[0064] FIG6 c is a schematic diagram of the layout structure of a reflective layer in another display panel provided in an embodiment of the present disclosure.

[0065] FIG6 d is a layout structure view of a second substrate in another display panel provided in an embodiment of the present disclosure.

[0066] FIG7 is a schematic diagram of a cross-sectional structure of a peripheral area in another display panel provided by an embodiment of the present disclosure.

[0067] FIG8 a is a schematic diagram of a cross-sectional structure of a first substrate in a transmission area of ​​a display panel provided by an embodiment of the present disclosure.

[0068] FIG8 b is a schematic diagram of the cross-sectional structure of a first substrate in a reflective area of ​​a display panel provided by an embodiment of the present disclosure.

[0069] FIG. 9 a is an enlarged schematic diagram of the M region in the display panel shown in FIG. 4 a .

[0070] FIG9 b is a schematic diagram of the cross-sectional structure of the structure shown in FIG9 a along the FF′ direction. DETAILED DESCRIPTION

[0071] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0072] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0073] It should be noted here that in actual applications, due to process limitations, the spacing, area, depth and other parameters between different structures in the display panel are equal, which means that the parameters are roughly the same, and the difference in the parameters can be ±10%. For example, the spacing between adjacent gate lines can be 5 microns, and the spacing between each adjacent gate line is equal, which means that the distance between each two adjacent gate lines can be between 4.5 microns and 5.5 microns. Within this spacing range, the application requirements can be met. The limitation of "equal" in the subsequent description will no longer be detailed.

[0074] FIG1 is a schematic diagram of a planar structure of an exemplary display panel, and FIG2 is a schematic diagram of a layout structure of an exemplary display panel. As shown in FIG1 and FIG2 , the display panel has a visible area VA, which includes a display area AA and a peripheral area VA-AA surrounding the display area AA. The visible area VA can be the area of ​​the display panel that is presented in the user's field of view, and specifically can be all other areas of the display panel excluding the rubber frame area used to fit the cover plate. Considering the accuracy of the alignment between the cover plate and the display area AA of the display panel, a certain amount of space is reserved for the visible area VA. In order to ensure that the display area AA can be fully displayed, the area of ​​the visible area VA must be larger than the area of ​​the display area AA. A peripheral area VA-AA is provided around the display area AA, and the width of the peripheral area VA-AA is generally between 0.3 mm and 0.5 mm. The display area AA of the display panel includes a reflective area AA1, a transmissive area AA2, and a non-opening area AA3. As shown in Figure 2, in addition to the array of pixels within the display area AA, the display panel also includes a column of pixels in the peripheral area VA-AA. This column of pixels is redundant to ensure that the display area AA can fully display. In actual use, this column of pixels is blocked by other film layers and does not display. The number of redundant pixel columns in the peripheral area VA-AA can also be multiple, such as two or three. To ensure a narrow bezel on the display panel, the fewer the number of redundant pixel columns, the better. In the following description, a single column will be used as an example.

[0075] It is understandable that the display panel shown in Figures 1 and 2 can be a transflective liquid crystal display panel, and a transmissive area AA2 (not shown in Figure 1) is provided in the display area AA of the transflective liquid crystal display panel, which can not only use ambient light for display, but also use a backlight source for display. Of course, the display panel can also be a reflective liquid crystal display panel, which is different from the above-mentioned transmissive liquid crystal display panel in that the transmissive area AA2 is not provided in the display area AA of the reflective liquid crystal display panel, and it can only use ambient light for display. In the embodiments of the present disclosure and the subsequent description, the display panel will be described as a transflective liquid crystal display panel as an example. The implementation principle of the reflective liquid crystal display panel is similar to that of the reflective liquid crystal display panel and will not be described in detail.

[0076] FIG3a is a schematic diagram of the cross-sectional structure of a reflective region in an exemplary display panel (i.e., the cross-sectional structure along the BB' direction in FIG2). As shown in FIG3a, the display panel includes: a first substrate 10 and a second substrate 20 disposed opposite each other; a liquid crystal layer 30 located between the first substrate 10 and the second substrate 20; an organic buffer layer 401 and a reflective layer 402 located on the side of the first substrate 10 adjacent to the liquid crystal layer 30; a first compensation film 403 and a first polarizer 404 disposed sequentially on the side of the second substrate 20 facing away from the liquid crystal layer 30; and a second compensation film 405 and a second polarizer 406 disposed sequentially on the side of the first substrate 10 facing away from the liquid crystal layer 30. The first substrate 10 may specifically be an array substrate, which includes: a first base 101; and structures such as data lines and gate lines (not shown in the figure) formed on the first base 101. The second substrate 20 may be a color filter substrate, which includes a second base 201 and a black matrix layer 202 on the second base. The black matrix layer 202 is provided with a plurality of first openings S1 , and the first openings S1 are filled with color filters 203 .

[0077] In combination with the structure shown in FIG. 2 , the first openings S1 are arranged along a first direction, and along a second direction, the width of each first opening S1 is equal, and the spacing between adjacent first openings S1 is equal; the first direction and the second direction intersect, for example, the first direction is the direction in which the data lines are arranged, i.e., the column direction, and the second direction is the direction in which the gate lines are arranged, i.e., the row direction. In the following description, the first direction will be the column direction and the second direction will be the row direction.

[0078] FIG3 b is a schematic diagram of a cross-sectional structure of a transmissive region in an exemplary display panel (i.e., a cross-sectional structure along the C-C' direction in FIG2 ). As shown in FIG3 b , the structure shown in FIG3 b differs from the structure shown in FIG3 a in that, in the structure shown in FIG3 b , the organic buffer layer 401 and the reflective layer 402 are respectively provided with a second opening S2 and a third opening S3. The second opening S2 and the third opening S3 allow light from the backlight source to pass through, enabling display using the light from the backlight source when ambient light is weak.

[0079] FIG3c is a schematic diagram of a cross-sectional structure of a non-opening area of ​​an exemplary display panel (i.e., a cross-sectional structure along the D-D' direction in FIG2). As shown in FIG3c, the structure shown in FIG3c differs from the structure shown in FIG3a in that, in the structure shown in FIG3c, the black matrix layer 202 does not have a first opening S1 and completely blocks each color filter 203. The black matrix 202 can block other structures, such as data lines, to prevent them from reflecting light and affecting the display effect.

[0080] FIG3 d is a schematic diagram of a cross-sectional structure of a peripheral region in an exemplary display panel (i.e., a cross-sectional structure along the EE' direction in FIG2 ). As shown in FIG3 d , the structure shown in FIG3 d differs from the structure shown in FIG3 a in that, in the structure shown in FIG3 d , the black matrix layer 202 is not provided with a first opening S1, nor is a color filter 203 provided. The black matrix layer 202 can shield other structures from display.

[0081] It should be noted that the dark state achieved in the reflective area AA1 and the transmissive area AA2 of the display panel is primarily achieved through the combined action of the first compensation film 402 and the liquid crystal layer 30. When the in-cell optical path equals the optical path of the liquid crystal layer + the optical path of the first compensation film = n*λ, where n is an integer, light can pass through the upper first polarizer 403 and enter the human eye, resulting in light leakage. When the in-cell optical path equals the optical path of the liquid crystal layer + the optical path of the first compensation film = m*λ, where m is a non-integer, light cannot pass through the upper first polarizer 403 and is invisible to the human eye, resulting in a black state.

[0082] In the structure shown in FIG3a , when no power is applied, light sequentially passes through the first polarizer 404, the first compensation film 403, the color filter 203, and the liquid crystal layer 30, is reflected by the reflective layer 402, and then passes through the liquid crystal layer 30, the color filter 203, and the first compensation film 403. Therefore, the optical path within the box = λ / 2(first compensation film 403) + λ / 4(liquid crystal layer 30) + λ / 4(liquid crystal layer 30) + λ / 2(first compensation film 403) = 3 / 2λ. The optical path within the box is not an integer multiple of λ, where λ is the wavelength of the light. At this time, the light cannot pass through the first polarizer 403, resulting in a black state.

[0083] In the structure shown in FIG3b, when no power is applied, light sequentially passes through the first polarizer 404, the first compensation film 403, the color filter 203, the liquid crystal layer 30, and the second compensation film 405, and is then absorbed by the second polarizer 406. At this time, no light appears, and the display is in a black state.

[0084] In the structure shown in FIG3c, when no power is applied, after light passes through the first polarizer 404 and the first compensation film 403 and is irradiated onto the black matrix layer 202, the black matrix layer 202 cannot completely absorb all the light. Part of the light is reflected by the black matrix layer 202 and emitted through the first compensation film 403 and the first polarizer 404, presenting a light leakage state.

[0085] Assuming that the reflective opening rate within a pixel is a, the reflectivity of the black matrix layer 202 is r, the proportion of the transmission area AA2 to the total area is c, and the light leakage rate of the reflection area AA1 is r1, the reflectivity of a single pixel in the display area AA is A = black matrix layer reflection + opening area reflection = black matrix layer area * black matrix layer reflectivity + reflection area area * reflection area reflectivity = s*(1-a)*r+s*(ac)*r1.

[0086] In the structure shown in FIG3d , when no power is applied, after light passes through the first polarizer 404 and the first compensation film 403 and is irradiated onto the black matrix layer 202, the black matrix layer 202 cannot completely absorb all the light. Part of the light is reflected by the black matrix layer 202 and emitted through the first compensation film 403 and the first polarizer 404, presenting a light leakage state.

[0087] Since only the black matrix layer 202 is provided in the peripheral area VA-AA and no color filter 203 is provided, the single pixel reflectivity A1 of the peripheral area VA-AA = black matrix layer area * black matrix layer reflectivity = s*r.

[0088] As can be seen from the above, the reflectivity of the display area AA and the peripheral area VA-AA of the display panel is different, resulting in different colors of the display area AA and the peripheral area VA-AA of the display panel in the dark state, poor integrated black effect, poor contrast, and affecting the user's visual experience.

[0089] In order to solve at least one of the above technical problems, the embodiments of the present disclosure provide a display panel and a display device. The display panel and the display device provided by the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0090] In a first aspect, an embodiment of the present disclosure provides a display panel. The display panel provided by the embodiment of the present disclosure has a visible area VA, and the visible area VA includes a display area AA and a peripheral area VA-AA surrounding the display area AA. Please refer to Figure 1 above. Figure 4a is a schematic diagram of the layout structure of a display panel provided by an embodiment of the present disclosure, Figure 4b is a schematic diagram of the layout structure of a first substrate in a display panel provided by an embodiment of the present disclosure, Figure 4c is a schematic diagram of the layout structure of a reflective layer in a display panel provided by an embodiment of the present disclosure, Figure 4d is a schematic diagram of the layout structure of a second substrate in a display panel provided by an embodiment of the present disclosure, Figure 5a is a schematic diagram of the cross-sectional structure of a reflective area in a display panel provided by an embodiment of the present disclosure (i.e., the cross-sectional structure along the B-B' direction in Figure 4a), and Figure 5b is a schematic diagram of the cross-sectional structure of a transmissive area in a display panel provided by an embodiment of the present disclosure (i.e., the cross-sectional structure along the B-B' direction in Figure 4 5a is a schematic diagram of the cross-sectional structure of a non-opening area in a display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the C-C' direction in FIG4a), FIG5c is a schematic diagram of the cross-sectional structure of a non-opening area in a display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the D-D' direction in FIG4a), and FIG5d is a schematic diagram of the cross-sectional structure of a peripheral area in a display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the E-E' direction in FIG4a). The structure of the display panel provided in the embodiment of the present disclosure is the same as that of the above-mentioned exemplary display panel in the display area AA, that is, the structure of FIG5a is the same as that shown in FIG3a, the structure of FIG5b is the same as that shown in FIG3b, and the structure of FIG5c is the same as that shown in FIG3c.

[0091] As shown in Figures 4a to 4d and Figures 5a to 5d, the display panel provided by the embodiment of the present disclosure includes: a first substrate 10 and a second substrate 20 arranged opposite to each other, and a liquid crystal layer 30 located between the first substrate 10 and the second substrate 20; the display panel also includes: a reflective layer 402 located on the side of the first substrate 10 close to the liquid crystal layer 30.

[0092] The first substrate 10 may be an array substrate, comprising a first base 101 on which structures such as data lines 102 and gate lines 103 are formed. The second substrate 20 may be a color filter substrate, comprising a second base 201 and a black matrix layer 202 on the second base. The black matrix layer 202 may be provided with a plurality of first openings S1, each of which is filled with color filters 203.

[0093] The display panel also includes an organic buffer layer 401 and a reflective layer 402 located on the side of the first substrate 10 near the liquid crystal layer 30; a first compensation film 403 and a first polarizer 404 located sequentially on the side of the second substrate 20 facing away from the liquid crystal layer 30; and a second compensation film 405 and a second polarizer 406 located sequentially on the side of the first substrate 10 facing away from the liquid crystal layer 30. The orthographic projections of the first compensation film 403 and the first polarizer 404 on the first substrate 10 overlap with the orthographic projections of the black matrix layer 202 on the first substrate 10.

[0094] The black matrix layer 202 and the reflective layer 402 both extend from the display area AA to the peripheral area VA-AA, wherein the black matrix layer 202 is provided with a plurality of first openings S1, and the first openings S1 are arranged along the first direction; in the display area AA and the peripheral area VA-AA, along the second direction, the width of each first opening S1 is equal, and the spacing between adjacent first openings S1 is equal; the first direction and the second direction intersect.

[0095] It should be noted that the first opening S1 has a certain area and is formed by two long sides and two short sides. Its arrangement direction is the arrangement direction of its long sides, and its width is the length of its short sides. The first direction can be the arrangement direction of the data lines 102, that is, the column direction, and correspondingly, the second direction can be the arrangement direction of the gate lines 103, that is, the row direction. In the following description, the arrangement direction of a certain structure is the arrangement direction of its long sides, which will not be repeated.

[0096] In the display panel provided by the embodiments of the present disclosure, since both the reflective layer 402 and the black matrix layer 202 extend from the display area AA to the peripheral area VA-AA, and accordingly, the first compensation film 403 and the first polarizer 404 also extend from the display area AA to the peripheral area VA-AA, the black matrix layer 202 is provided with a plurality of first openings S1, which are arranged along a first direction. In the display area AA and the peripheral area VA-AA, along a second direction, each first opening S1 has an equal width, and the spacing between adjacent first openings S1 is equal. As a result, the display area AA and the peripheral area VA-AA have substantially the same opening density. In the region (opening region) corresponding to the first openings S1, when power is not applied, ambient light can enter the first openings S1 of the black matrix layer 202 in the display area AA and the peripheral area VA-AA of the display panel and be reflected by the reflective layer 402. The optical path lengths of the two regions are substantially the same, and light reflected by the reflective layer 402 cannot be emitted from the first polarizer 404. At the same time, the black matrix layer 202 reflects ambient light to a certain extent in areas other than the area corresponding to the first opening S1 (non-opening area), and the reflectivity of the two areas is substantially the same. Therefore, it is ensured that the display area AA and the peripheral area VA-A of the display panel appear black in a dark state, with consistent colors, thereby improving the integrated black effect of the display panel and further enhancing the user's visual experience.

[0097] Continuing to refer to Figures 4a to 4d and Figures 5a to 5d, the first substrate includes: a first substrate 101, a plurality of data lines 102 and gate lines 103 located on the first substrate 101 and arranged crosswise; a reflective layer 402 is provided with a first slit 402a and a second slit 402b; a black matrix layer 202 includes: a first black matrix strip 2021 and a second black matrix strip 2022; the data lines 102, the first slit 402a and the first black matrix strip 2021 are arranged along the first direction, and the gate lines 103, the second slit 402b and the second black matrix strip 2022 are arranged along the second direction; the data lines 102 and the first slit 402a are provided in the display area AA, and the gate lines 103, the second slit 402b and the second black matrix strip 2022 extend from the display area AA to the peripheral area VA-AA, and the second black matrix strip 2022 is arranged in the display area AA and the peripheral area VA-AA; in the display area AA, the data line 102, the first slit 402a and the first black matrix strip 2021 have their orthographic projections on the first substrate 101 at least partially overlap; in the peripheral area VA-AA, the gate line 103, the second slit 402b and the second black matrix strip 2022 have their orthographic projections on the first substrate 101 at least partially overlap; in the display area AA and the peripheral area VA-AA, along the second direction, the spacing between adjacent first black matrix strips 2021 is equal.

[0098] The reflective layer 402 is provided with a first slit 402a and a second slit 402b, wherein the first slit 402a is arranged in the same direction as the data lines 102, and the second slit 402b is arranged in the same direction as the gate lines 103. The black matrix layer 202 is composed of a first black matrix strip 2021 and a second black matrix strip 2022 arranged in a cross pattern, wherein the first black matrix strip 2021 is arranged in the same direction as the data lines 102, and the second black matrix strip 2022 is arranged in the same direction as the gate lines 103. The reflective layer 402 can be divided into multiple small blocks by the first slit 402a and the second slit 402b. The distance between adjacent small blocks of reflective layer 402 is related to process capabilities. The smaller the distance, the better, that is, the smaller the width of the first slit 402a and the second slit 402b, the better, and is typically 3 to 4 microns.

[0099] In display area AA, the data lines 102 and gate lines 103 are intersecting. Since the film layer where the data lines 102 are located is above the film layer where the gate lines 103 are located, the first slits 402a can be positioned directly opposite the data lines 102 to expose them. Accordingly, to prevent the electric field generated at the location of the data lines 102 from disrupting the deflection of the liquid crystal in the liquid crystal layer 30 and causing light leakage, the first black matrix strips 2021 can be positioned directly opposite the first slits 402a to shield them. Simultaneously, the second slits 402b can expose the gate lines 103. Since the pixels in the same column all have the same color, the black matrix layer 202 does not need to shield the gate lines 103.

[0100] In the peripheral area VA-AA, since the gate line 103 extends from the display area AA to the peripheral area VA-AA, the second slit 402a can expose the gate line 103. Accordingly, to prevent the electric field generated at the location of the gate line 103 from disrupting the deflection of the liquid crystal in the liquid crystal layer 30 and causing light leakage, the second black matrix strips 2022 can be arranged directly opposite the second slit 402b, with the second slit 402b providing shielding. At the same time, to ensure an aperture ratio that is nearly identical to that in the display area AA, the first black matrix strips 2021 are arranged similarly, and the spacing between adjacent first black matrix strips 2021 is equal to the spacing between adjacent first black matrix strips 2021 in the display area AA.

[0101] Assuming that the pixel area is s, the aperture ratio of the peripheral area VA-AA is c, the aperture ratio of the display area AA is a, and the reflectivity of the black matrix layer 202 is r, the reflectivity A1 of the peripheral area VA-AA = area * reflectivity = s*(1-c)*r = s*r*(1-c), and the reflectivity A2 of the display area AA = s*(1-a)*r = s*r*(1-a), A1 is greater than A2, and the difference is mainly due to the fact that the second black matrix bar 2022 is provided in the peripheral area VA-AA, and the second black matrix bar 2022 is not provided in the display area AA. The difference between the two is very small, which can ensure that the display area AA and the peripheral area VA-A of the display panel are both black in the dark state, and their colors are consistent, thereby improving the integrated black effect of the display panel, and thus enhancing the user's visual experience.

[0102] FIG6a is a schematic diagram of the layout structure of another display panel provided in an embodiment of the present disclosure, FIG6b is a schematic diagram of the layout structure of the first substrate in another display panel provided in an embodiment of the present disclosure, FIG6c is a schematic diagram of the layout structure of the reflective layer in another display panel provided in an embodiment of the present disclosure, and FIG6d is a view of the layout structure of the second substrate in another display panel provided in an embodiment of the present disclosure. The cross-sectional structure along the directions B-B', C-C', D-D', and E-E' in FIG6a is the same as that in FIG5a to FIG5d. Continuing to refer to FIG5a to FIG5d and FIG6a to FIG6d, the first substrate 10 includes: a first base 101, a plurality of data lines 102 and gate lines 103 located on the first base 101 and cross-arranged; the reflective layer 402 is only provided with a first slit 402a; the black matrix layer 202 includes: a first substrate 101, a plurality of data lines 102 and gate lines 103 located on the first substrate 101 and cross-arranged; the reflective layer 402 is only provided with a first slit 402a; the black matrix layer 202 includes: a first A black matrix strip 2021; the data line 102, the first gap 402a and the first black matrix strip 2021 are all arranged along the first direction, and the gate line 103, the second gap 402b and the second black matrix strip 2022 are all arranged along the second direction; the data line 102 and the first gap 402a are arranged in the display area AA, the gate line 103 extends from the display area AA to the peripheral area VA-AA, and the first black matrix strip 2021 is arranged in the display area AA and the peripheral area VA-AA; in the display area AA, the orthographic projections of the data line 102, the first gap 402a and the first black matrix strip 2021 on the first substrate 101 at least partially overlap; in the peripheral area VA-AA, the reflective layer 402 is arranged on the entire surface; in the display area AA and the peripheral area VA-AA, along the second direction, the spacing between adjacent first black matrix strips 2021 is equal.

[0103] It should be noted here that in actual applications, due to process limitations, along the second direction, the equal spacing between adjacent first black matrix strips 2021 means that the spacing is roughly the same, that is, the spacing between adjacent first black matrix strips 2021 can differ by about 10% to meet process requirements.

[0104] The display panel shown in Figures 6a to 6d differs from the display panel shown in Figures 4a to 4d in that, in the peripheral area VA-AA, the reflective layer 402 is provided on the entire surface. This entire reflective layer 402 can shield the signal from the gate line 103, thereby preventing the electric field generated at the gate line 103 from causing deflection disturbance of the liquid crystal in the liquid crystal layer 30 and resulting in light leakage. Accordingly, the black matrix layer 202 does not need to be provided with the second black matrix strips 2022. Therefore, in both the display area AA and the peripheral area VA-AA, the black matrix layer 202 is provided with only the first black matrix strips 2021 with equal spacing.

[0105] Assuming the pixel area is s, the aperture ratio of the display area AA is a, the aperture ratio of the peripheral area VA-AA is the same as the aperture ratio of the display area AA, and the reflectivity of the black matrix layer 202 is r. Therefore, the reflectivity A1 of the display area AA and the peripheral area VA-AA = area * reflectivity = s * (1-a) * r = s * r * (1-a). There is no difference in the reflectivity of the black matrix layer 202, which can ensure that the display area AA and the peripheral area VA-A of the display panel appear black in the dark state and have consistent colors, thereby improving the integrated black effect of the display panel and further enhancing the user's visual experience.

[0106] In some embodiments, as shown in FIG. 5 a to FIG. 5 d , the display panel further includes: an organic buffer layer 401 ; the organic buffer layer 401 is located on a side of the reflective layer 402 close to the first substrate 101 .

[0107] The organic buffer layer 401 can be made of organic transparent materials such as resin and acrylic, and has a certain thickness. The reflective layer 402 thereon can be increased so that the reflective layer 402 effectively reflects ambient light, increases light reflectivity, and thus improves display effects.

[0108] Figure 7 is a schematic diagram of the cross-sectional structure of the peripheral area in another display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the EE' direction in Figure 4a). As shown in Figure 7, a plurality of protrusions 401a are provided on the side of the organic buffer layer 401 close to the reflective layer 402; the reflective layer 402 covers each surface of the protrusions 401a.

[0109] The protrusion 401a can form an uneven surface of the organic buffer layer 401. When covering the organic buffer layer 401, the reflective layer 402 can cover the surfaces of the protrusion 401a, so that the reflective layer 402 can form an uneven surface, converting mirror reflection into diffuse reflection, thereby increasing the light output angle of the display panel, thereby increasing the user's viewing angle and improving the display effect.

[0110] In some embodiments, as shown in FIG. 5 a to FIG. 5 d , the second substrate 20 further includes: a plurality of color filters 203 ; in the display area AA and the peripheral area VA-AA, the color filters 203 are filled in the first openings S1 formed by adjacent first black matrix strips 2021 .

[0111] The color filters 203 can filter the reflected light into monochromatic light of different colors, thereby realizing a colorful display. Specifically, along the arrangement direction of the gate lines 103, the colors of adjacent color filters 203 are different; along the arrangement direction of the data lines 102, the colors of adjacent color filters 203 are the same.

[0112] In some embodiments, the thickness of the color filter 203 in the display area AA is greater than the thickness of the color filter 203 in the peripheral area VA-AA.

[0113] When the reflective layer 402 and the black matrix layer 202 still cannot ensure that the display area AA and the peripheral area VA-AA achieve a uniform black effect, the brightness of the incident light and the reflected light from the reflective layer 402 can be adjusted by changing the thickness of the color filter 203. For example, the thickness of the color filter 203 in the display area AA is greater than the thickness of the color filter 203 in the peripheral area VA-AA. The thicker color filter 203 can have a stronger light filtering effect, reduce the brightness of the light, and ensure that the display area AA and the peripheral area VA-A of the display panel appear black in the dark state, with their colors being consistent. This can improve the uniform black effect of the display panel and, in turn, enhance the user's visual experience.

[0114] Figure 8a is a schematic diagram of the cross-sectional structure of the first substrate in the transmission area of ​​a display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the C-C' direction in Figure 4a), Figure 8b is a schematic diagram of the cross-sectional structure of the first substrate in the reflection area of ​​a display panel provided in an embodiment of the present disclosure (i.e., the cross-sectional structure along the B-B' direction in Figure 4a), Figure 9a is an enlarged schematic diagram of the M area in the display panel shown in Figure 4a, and Figure 9b is a schematic diagram of the cross-sectional structure of the structure shown in Figure 9a along the F-F' direction. As shown in Figures 8a, 8b, 9a, and 9b, the first substrate 10 further includes: a passivation layer 104 and a pixel electrode 105 arranged in sequence on the side of the data line 102 away from the first base 101; the pixel electrode 105 is connected to the data line 102 through a first via hole V1 penetrating the passivation layer 104. The first substrate 10 also includes a common electrode 106. The common electrode 106 includes a first sub-common electrode 1061 and a second sub-common electrode 1062. The first sub-common electrode 1061 is disposed on the same layer as the gate line 103, while the second sub-common electrode 1062 is disposed on the same layer as the data line 102. The first substrate 10 also includes a gate insulating layer 107 positioned between the gate line 103 and the data line 102. The first sub-common electrode 1061 is connected to the transfer electrode 108 via a second via hole V2 extending through the gate insulating layer 107 and the passivation layer 104. The second sub-common electrode 1062 is connected to the transfer electrode 108 via a third via hole V3 extending through the passivation layer 104. The transfer electrode 108 is disposed on the same layer as the pixel electrode 105. The transfer electrode 108 is connected to the reflective layer 402 via a fourth via hole V4 extending through the organic buffer layer 401.

[0115] The pixel electrode 105 is connected to the data line 102, and the data signal on the data line 102 can be transmitted to the pixel electrode 105, so that when power is applied, the pixel electrode 105 and the common electrode (described later) generate an electric field, driving the liquid crystal in the liquid crystal layer 30 to deflect for display. The common electrode 106 is formed by a double-layer structure of a first sub-common electrode 1061 and a second sub-common electrode 1062 to reduce the overall resistance of the common electrode 106. At the same time, the first sub-common electrode 1061 can be arranged in the same layer as the gate line 103, and the second sub-common electrode 1062 can be arranged in the same layer as the data line 102, which can reduce the process steps and save preparation costs. The first sub-common electrode 1061 and the second sub-common electrode 1062 are both connected to the reflective layer 402 through the switching electrode 108, which can provide a common signal to the reflective layer 402 to avoid the reflective layer 402 being suspended and generating static electricity, which affects the display effect. The switching electrode 108 can be arranged in the same layer as the pixel electrode 105 to reduce the process steps and save preparation costs.

[0116] In some embodiments, the first substrate 10 further includes: a thin film transistor (not shown) located on the first base 101 ; the gate of the thin film transistor is connected to the gate line 103 , the source is connected to the data line 102 , and the drain is connected to the pixel electrode 105 .

[0117] When a gate signal is input to the gate of the thin film transistor through the gate line 103 , the on-off between the source and the drain can be controlled to control the on-off between the data line 102 and the pixel electrode 105 , thereby controlling the display of the display panel.

[0118] In some embodiments, as shown in Figures 3a and 3b, the display area includes: a reflective area AA1 and a transmissive area AA2; in the reflective area AA1, the organic buffer layer 401 and the reflective layer 402 are both provided on the entire surface; in the transmissive area AA2, the organic buffer layer 401 and the reflective layer 402 are respectively provided with a second opening S2 and a third opening S3; the orthographic projections of the second opening S2 and the third opening S3 on the first substrate 101 at least partially overlap.

[0119] In the reflective area AA1, the entire organic buffer layer 401 provides a contact surface for the reflective layer 402. The entire reflective layer 402 can reflect ambient light to achieve reflective display. In the transmissive area AA2, the organic buffer layer 401 and the reflective layer 402 are respectively provided with a second opening S2 and a third opening S3. The organic buffer layer 401 and the reflective layer 402 can be disconnected to transmit light provided by the backlight source, achieving transmissive display.

[0120] As shown in Figures 3a to 3c and Figure 4, the display panel further includes: a second compensation film 405 and a second polarizer 406, which are sequentially disposed on the side of the first substrate 101 facing away from the liquid crystal layer 30. The second compensation film 405 and the first compensation film 403 have the same compensation phase difference; the second polarizer 406 and the first polarizer 404 have intersecting polarization directions. Both the first compensation film 403 and the second compensation film 405 are half-wave plates.

[0121] In some embodiments, the display panel further includes: a spacer 40 located between the first substrate 10 and the second substrate 20 ; and the orthographic projection of the first black matrix strip 2021 on the first substrate 101 covers the orthographic projection of the spacer 40 on the first substrate 101 .

[0122] The spacers 40 can support the first substrate 10 and the second substrate 20 to maintain the cell thickness of the liquid crystal layer 30. The first black matrix strips 2021 can be disposed at positions corresponding to the spacers 40 to cover the spacers 40 and prevent light leakage from the spacers 40.

[0123] In a second aspect, embodiments of the present disclosure provide a display device comprising a display panel as provided in any of the aforementioned embodiments, and further comprising a backlight module located on the side of the second polarizer facing away from the liquid crystal layer. The display device may specifically be an electronic device with a display function, such as a mobile phone, a smart TV, a tablet computer, a laptop computer, or an in-car navigation system. The implementation principles and beneficial effects of the display device are similar to those of the aforementioned display panels and are not further elaborated here.

[0124] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display panel having a visible area, the visible area comprising: A display area and a peripheral area surrounding the display area. The display panel includes: a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer located between the first substrate and the second substrate; the second substrate includes: a black matrix layer; the display panel further includes: a reflective layer located on a side of the first substrate close to the liquid crystal layer; Both the black matrix layer and the reflective layer extend from the display area to the peripheral area, and the black matrix layer is provided with a plurality of first openings; the first openings are arranged in a first direction; In the display area and the peripheral area, in a second direction, the width of each first opening is equal, and the spacing between adjacent first openings is equal; the first direction and the second direction intersect.

2. The display panel according to claim 1, wherein, The display panel further includes: a first compensation film and a first polarizer sequentially disposed on a side of the second substrate facing away from the liquid crystal layer; The positive projection of the first compensation film and the first polarizer on the first substrate overlaps with the positive projection of the black matrix layer on the first substrate.

3. The display panel according to claim 1, wherein, The first substrate includes: a first base, a plurality of data lines and gate lines disposed on the first base and intersecting with each other; the reflective layer is provided with a first gap and a second gap; the black matrix layer includes: a first black matrix bar and a second black matrix bar; the data lines, the first gap and the first black matrix bar are all arranged in the first direction, and the gate lines, the second gap and the second black matrix bar are all arranged in the second direction; The data lines and the first gap are disposed in the display area, the gate lines, the second gap and the second black matrix bar extend from the display area to the peripheral area, and the second black matrix bar is disposed in the display area and the peripheral area; In the display area, the data lines, the first gap and the first black matrix bar are at least partially overlapped in the positive projection on the first base. In the peripheral area, the gate lines, the second gap and the second black matrix bar are at least partially overlapped in the positive projection on the first base. In the display area and the peripheral area, in the second direction, the spacing between at least some adjacent first black matrix bars is equal. The first substrate includes: a first base, a plurality of data lines and gate lines disposed on the first base and intersecting with each other; the reflective layer is provided with a first gap; the black matrix layer includes: a first black matrix bar; the gate lines, the first gap and the first black matrix bar are all arranged in the first direction, and the gate lines are arranged in the second direction; 4. The display panel according to claim 1, wherein, The data lines and the first gap are disposed in the display area, the gate lines extend from the display area to the peripheral area, and the first black matrix bar is disposed in the display area and the peripheral area; In the display area, the data lines, the first gap and the first black matrix bar are at least partially overlapped in the positive projection on the first base. In the peripheral area, the reflective layer is provided as a whole surface. In the display area and the peripheral area, in the second direction, the spacing between at least some adjacent first black matrix bars is equal. The display panel further includes: an organic buffer layer; 5. The display panel according to claim 3 or 4, wherein ​ The organic buffer layer is located on the side of the reflective layer close to the first substrate.

6. The display panel according to claim 5, wherein, A plurality of protrusions are provided on the side of the organic buffer layer close to the reflective layer; The reflective layer covers at least one surface of the protrusions.

7. The display panel according to claim 5, wherein, The second substrate further includes: a plurality of color filters; In the display area and the peripheral area, the color filters are filled in the first openings formed between adjacent first black matrix bars.

8. The display panel according to claim 7, wherein, The thickness of the color filters in the display area is greater than the thickness of the color filters in the peripheral area.

9. The display panel according to claim 5, wherein, The first substrate further includes: a passivation layer and a pixel electrode sequentially provided on the side of the data line away from the first substrate; The pixel electrode is connected to the data line through a first via hole penetrating the passivation layer.

10. The display panel according to claim 9, wherein, The first substrate further includes: a common electrode; the common electrode includes: a first sub-common electrode and a second sub-common electrode; The first sub-common electrode is provided on the same layer as the gate line; the second sub-common electrode is provided on the same layer as the data line.

11. The display panel according to claim 10, wherein, The first substrate further includes: a gate insulating layer located between the gate line and the data line; The first sub-common electrode is connected to a transfer electrode through a second via hole penetrating the gate insulating layer and the passivation layer; the second sub-common electrode is connected to the transfer electrode through a third via hole penetrating the passivation layer.

12. The display panel according to claim 11, wherein, The transfer electrode is provided on the same layer as the pixel electrode.

13. The display panel according to claim 12, wherein, The transfer electrode is connected to the reflective layer through a fourth via hole penetrating the organic buffer layer.

14. The display panel according to claim 9, wherein, The first substrate further includes: a thin film transistor located on the first substrate; The gate of the thin film transistor is connected to the gate line, the source is connected to the data line, and the drain is connected to the pixel electrode.

15. The display panel according to claim 5, wherein, The display area includes: a reflective area and a transmissive area; in the reflective area, both the organic buffer layer and the reflective layer are provided as a whole surface; In the transmissive area, the organic buffer layer and the reflective layer are respectively provided with a second opening and a third opening; the positive projections of the second opening and the third opening on the first substrate are at least partially overlapped.

16. The display panel according to claim 2, wherein, The display panel further includes: a second compensation film and a second polarizer sequentially provided on the side of the first substrate away from the liquid crystal layer; The compensation phase difference of the second compensation film is the same as that of the first compensation film; The polarization directions of the second polarizer and the first polarizer intersect.

17. The display panel according to claim 5, wherein, The display panel further includes: spacers located between the first substrate and the second substrate; The positive projection of the first black matrix bar on the first substrate covers the positive projection of the spacer on the first substrate.

18. A display device, wherein, The display device includes the display panel according to any one of claims 1 to 17.

19. The display device according to claim 18, wherein, The display device further includes: a backlight module; The backlight module is located on the side of the second polarizer away from the liquid crystal layer.

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