Display panel and display apparatus

Abstract

A display panel. A planarization layer (22) of the display panel is provided with a transmission opening (221). A side surface of the transmission opening (221) comprises a first opening section (2211) and a second opening section (2212), the first opening section (2211) and the second opening section (2212) extending along the outline of the transmission opening (221). A reflective pixel electrode (23) and a transmissive pixel electrode (211) are connected together along the first opening section (2211), and the width of the reflective pixel electrode (23) is reduced at the second opening section (2212), thereby ensuring that no reflected light escapes in a dark state, and accordingly significantly mitigating dark state light leakage in a reflecting state. A first shielding layer (116) is provided, an orthographic projection of the first shielding layer (116) onto a first base substrate (10) covering an orthographic projection of the second opening section (2212) onto the first base substrate (10). Moreover, when light passes through the transmissive pixel electrode (211) from the transmission opening in a transmission mode, the light is shielded by the first shielding layer (116), thereby ensuring transmission contrast of the display panel. The present disclosure also provides a display apparatus comprising the display panel.

Description

Display panel and display device 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] In current transflective display devices, in order to improve the aperture ratio of the display panel, the display panel is provided with a reflective area and a transmissive area, a transmissive opening is provided in the transmissive area, and the reflective pixel electrode is directly overlapped on the transmissive pixel electrode at the transmissive opening to supply power to the reflective pixel electrode.

[0003] However, there is a slope area with a large difference in cell thickness between the transmissive area and the reflective area. The phase of the liquid crystal at different cell thicknesses will change, which will cause obvious light leakage in the display panel in the slope area and the area where the reflective pixel electrode and the transmissive pixel electrode overlap.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a display panel and a display device.

[0007] According to one aspect of the present disclosure, a display panel is provided, comprising a first base substrate, a transmissive pixel electrode, a planarization layer, a reflective pixel electrode, and a first shielding layer, wherein the transmissive pixel electrode is disposed on one side of the first base substrate and is made of a transparent conductive material; the planarization layer is disposed on a side of the transmissive pixel electrode away from the first base substrate, the planarization layer is provided with a transmissive opening exposing the transmissive pixel electrode, the width of the transmissive opening gradually increasing in a direction away from the first base substrate, the side surface of the transmissive opening comprises a first opening segment and a second opening segment, the first opening segment and the second opening segment extending along the contour of the transmissive opening; the reflective pixel electrode is disposed on a side of the planarization layer away from the first base substrate, the reflective pixel electrode is provided with a light-transmitting opening, the reflective pixel electrode and / or the transmissive pixel electrode extend along the first opening segment until they are connected to each other, and the edge of the light-transmitting opening overlaps with an end of the second opening segment away from the first base substrate; and the first shielding layer is disposed between the transmissive pixel electrode and the first base substrate, the orthographic projection of the first shielding layer on the first base substrate covering the orthographic projection of the second opening segment on the first base substrate.

[0008] In one embodiment of the present disclosure, an orthographic projection of the first shielding layer on the first base substrate covers an orthographic projection of the first opening segment on the first base substrate.

[0009] In one embodiment of the present disclosure, the display panel also includes a driving circuit layer, which is arranged between the transmissive pixel electrode and the base substrate. The driving circuit layer includes a gate layer, a gate insulating layer, an active layer, a source-drain metal layer and a passivation layer. The gate layer is arranged on one side of the first base substrate; the gate insulating layer is arranged on the side of the gate layer away from the first base substrate; the active layer is arranged on the side of the gate insulating layer away from the first base substrate; the source-drain metal layer is arranged on the side of the active layer away from the first base substrate, the source-drain metal layer includes a source and a drain; and the passivation layer is arranged on the side of the source-drain metal layer away from the first base substrate.

[0010] In one embodiment of the present disclosure, the reflective pixel electrode extends along the first opening section to the transmissive pixel electrode exposed in the transmissive opening, and the transmissive pixel electrode is connected to the source or drain through a first via hole in the passivation layer.

[0011] In one embodiment of the present disclosure, the overlapping portion of the reflective pixel electrode and the transmissive pixel electrode is an overlapping region, and the width of the overlapping region is less than or equal to 1 μm.

[0012] In one embodiment of the present disclosure, the shape of the transmissive opening is polygonal, the orthographic projection of the reflective pixel electrode on the first base substrate covers the first side of the transmissive opening, the length of the overlapping area is equal to the length of the first side of the transmissive opening, and the first side is the shortest side of the transmissive opening.

[0013] In one embodiment of the present disclosure, the first shielding layer and the gate layer are provided in the same layer and with the same material.

[0014] In one embodiment of the present disclosure, the gate layer also includes a first reference signal portion, and the display panel also includes a second reference signal portion. The second reference signal portion is arranged in the same layer and material as the transmissive pixel electrode, and the second reference signal portion is connected to the first reference signal portion in a peripheral area outside the display area.

[0015] In one embodiment of the present disclosure, a spacer is provided between the first reference signal portion and the first shielding layer, and an orthographic projection of the first via hole in the passivation layer on the first base substrate is located within an orthographic projection of the spacer on the first base substrate.

[0016] In one embodiment of the present disclosure, the transmissive pixel electrode extends along the first opening segment to between the reflective pixel electrode and the planarization layer, and the display panel also includes a transfer layer, which is arranged between the passivation layer and the planarization layer. The transfer layer is connected to the source or drain through a second via hole, and the transfer layer extends to be connected to the transmissive pixel electrode in the transmissive opening, and the orthographic projection of the transfer layer on the first base substrate covers the orthographic projection of the first opening segment on the first base substrate.

[0017] In one embodiment of the present disclosure, the first shielding layer and the transfer layer are provided in the same layer and with the same material.

[0018] In one embodiment of the present disclosure, the display panel further includes a second shielding layer, which is provided in the same layer and material as the transfer layer, and the orthographic projection of the second shielding layer on the first base substrate covers the orthographic projection of the active layer on the first base substrate.

[0019] In one embodiment of the present disclosure, a plurality of first arc-shaped protrusions are provided on a side of the planarization layer away from the first base substrate, a plurality of second arc-shaped protrusions are formed on a side of the transmissive pixel electrode away from the first base substrate, and a plurality of third arc-shaped protrusions are formed on a side of the reflective pixel electrode away from the first base substrate.

[0020] In one embodiment of the present disclosure, the display panel also includes a color filter layer, the color filter layer includes a black matrix, a color resist opening is provided on the black matrix, a compensation portion is provided in the color resist opening, and the orthographic projection of the compensation portion on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

[0021] In one embodiment of the present disclosure, the display panel further includes a liquid crystal layer, and the liquid crystal layer is disposed between the reflective pixel electrode and the color filter layer.

[0022] In one embodiment of the present disclosure, the edge of the transmission opening on the side close to the first base substrate is the inner contour, and the edge of the transmission opening on the side away from the first base substrate is the outer contour, and the distance between the orthographic projection of the outer contour on the first base substrate and the orthographic projection of the inner contour on the first base substrate is less than or equal to 3 μm.

[0023] According to another aspect of the present disclosure, a display device is provided, including the display panel provided in one aspect of the present disclosure.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0026] FIG1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when four sides of a reflective pixel electrode are directly overlapped on a transmissive pixel electrode.

[0027] FIG2 is a schematic plan view of a gate layer according to an embodiment of the present disclosure.

[0028] FIG3 is a plan view of a source / drain metal layer according to an embodiment of the present disclosure.

[0029] FIG4 is a schematic plan view of a transmissive conductive layer according to an embodiment of the present disclosure.

[0030] FIG5 is a partial planar schematic diagram of a planarization layer according to an embodiment of the present disclosure.

[0031] FIG6 is a plan view of the reflective pixel electrode according to an embodiment of the present disclosure when four sides of the reflective pixel electrode are directly overlapped on the transmissive pixel electrode.

[0032] FIG7 shows a pixel layout of a display panel according to an embodiment of the present disclosure when the four sides of the reflective pixel electrode are directly overlapped on the transmissive pixel electrode and the first shielding layer is not provided.

[0033] FIG8 is a schematic cross-sectional view of the display panel according to an embodiment of the present disclosure when the reflective pixel electrode is not connected to the transmissive pixel electrode in the second opening section.

[0034] FIG. 9 is a schematic diagram showing the division of the first opening section and the second opening section in the side surface of the transmission opening involved in the embodiment of the present disclosure.

[0035] FIG10 is a plan view of the reflective pixel electrode according to an embodiment of the present disclosure when the reflective pixel electrode is connected to the transmissive pixel electrode in the first opening section.

[0036] FIG11 is a plan view of the gate layer according to an embodiment of the present disclosure when the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

[0037] FIG12 is a layout of pixels of the display panel according to an embodiment of the present disclosure when the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

[0038] 13 is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure when the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projections of the first opening segment and the second opening segment on the first base substrate.

[0039] 14 is a plan view of the gate layer involved in an embodiment of the present disclosure when the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projections of the first opening segment and the second opening segment on the first base substrate.

[0040] FIG15 is a layout of pixels of a display panel according to an embodiment of the present disclosure when the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projections of the first opening segment and the second opening segment on the first base substrate.

[0041] 16 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure, wherein the transmissive pixel electrode extends between the reflective pixel electrode and the planarization layer, and the transfer layer is connected to the transmissive pixel electrode.

[0042] FIG17 is a schematic cross-sectional view of the display panel according to an embodiment of the present disclosure when a plurality of third arc-shaped protrusions are formed on a side of the reflective pixel electrode away from the first base substrate.

[0043] 18 is a schematic cross-sectional view of the display panel according to the embodiment of the present disclosure when the orthographic projection of the second opening segment of the transmissive opening on the first base substrate is located within the orthographic projection of the black matrix on the first base substrate.

[0044] FIG19 is a layout of pixels of a display panel according to an embodiment of the present disclosure when the orthographic projection of the second opening segment of the transmissive opening on the first base substrate is located within the orthographic projection of the black matrix on the first base substrate.

[0045] FIG20 is a schematic cross-sectional view of the display panel according to an embodiment of the present disclosure when the orthographic projection of the compensation portion on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

[0046] FIG21 is a layout of a local area of ​​a display panel according to an embodiment of the present disclosure when the orthographic projection of the compensation portion on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

[0047] Figure 22 is a cross-sectional schematic diagram of the display panel involved in an embodiment of the present disclosure when the transmissive pixel electrode extends along the first opening segment to between the reflective pixel electrode and the planarization layer, and the orthographic projection of the compensation part on the first base substrate covers the orthographic projection of the first opening segment and the second opening segment on the first base substrate.

[0048] Figure 23 is a layout of a local area of ​​the display panel involved in an embodiment of the present disclosure when the transmissive pixel electrode extends along the first opening segment to between the reflective pixel electrode and the planarization layer, and the orthographic projection of the compensation part on the first base substrate covers the orthographic projection of the first opening segment and the second opening segment on the first base substrate.

[0049] Description of the accompanying drawings: 1-driving backplane, 10-first base substrate, 11-driving circuit layer, 110-thin film transistor, 111-gate layer, 1111-gate, 1112-first reference signal portion, 1113-gate line, 1114-first reference signal line, 112-gate insulation layer, 113-active layer, 114-source and drain metal layer, 1141-source, 1142-drain, 1143-data line, 115-passivation layer, 1151-first via hole, 1152-second via hole, 116-first blocking layer, 117-second blocking layer, 118-transfer layer, 2-pixel layer, 21-transmissive conductive layer, 211-transmissive pixel electrode, 2112-second arc-shaped protrusion, 212-second reference signal portion, 2121- Second reference signal line, 22-planarization layer, 221-transmission opening, 2211-first opening section, 2212-second opening section, 222-first arc-shaped protrusion, 23-reflective pixel electrode, 231-light-transmitting port, 232-third arc-shaped protrusion, 24-liquid crystal layer, 25-color filter substrate, 251-second base substrate, 252-color filter layer, 2521-black matrix, 2522-color resist opening, 2523-compensation part, 2524-filter unit, 26-common electrode. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0051] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0052] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0053] With the demand for an integrated black display effect, normally black transflective display devices are becoming increasingly popular. As shown in Figures 1 and 2 to 7, to improve the transmission efficiency of the display panel, the display panel is provided with a reflective area and a transmissive area. A transmissive opening 221 is provided in the transmissive area. The reflective pixel electrode 23 extends along the entire side of the transmissive opening 221, so that the four sides of the reflective pixel electrode 23 directly overlap the transmissive pixel electrode 211 to supply power to the reflective pixel electrode 23. Although this structure significantly improves the reflectivity of the display panel, the side of the transmissive opening 221 located between the transmissive area and the reflective area has a slope area where the cell thickness and the design value of the reflective cell thickness differ significantly. Because when reflected light passes through liquid crystals at different cell thicknesses, the phase changes of the light are different, resulting in more obvious reflected light leakage in the slope area.

[0054] Based on this, the embodiment of the present disclosure provides a display panel that can prevent obvious light leakage in the slope area in the non-display state. As shown in Figures 3, 4, and 8 to 20, the display panel includes a first base substrate 10, a transmission pixel electrode 211, a planarization layer 22, a reflective pixel electrode 23, and a first shielding layer 116. The transmission pixel electrode 211 is provided on one side of the first base substrate 10, and the transmission pixel electrode 211 is a transparent conductive material; the planarization layer 22 is provided on the side of the transmission pixel electrode 211 away from the first base substrate 10, and a transmission opening 221 is provided on the planarization layer 22 to expose the transmission pixel electrode 211. The width of the transmission opening 221 gradually increases in the direction away from the first base substrate 10, and the side surface of the transmission opening 221 includes a first opening section 2211 and a second opening section 2212. The opening section 2211 and the second opening section 2212 extend along the contour of the transmissive opening 221; the reflective pixel electrode 23 is provided on the side of the planarization layer 22 away from the first base substrate 10, and the reflective electrode is provided with a light-transmitting opening 231. The reflective pixel electrode 23 and / or the transmissive pixel electrode 211 extend along the first opening section 2211 until they are connected to each other, and the edge of the light-transmitting opening 231 overlaps with the end of the second opening section 2212 away from the first base substrate 10; the first blocking layer 116 is provided between the transmissive pixel electrode 211 and the first base substrate 10, and the orthographic projection of the first blocking layer 116 on the first base substrate 10 covers the orthographic projection of the second opening section 2212 on the first base substrate 10.

[0055] The side surface of the transmissive opening 221 includes a first opening section 2211 and a second opening section 2212, which extend along the outline of the transmissive opening 221. The reflective pixel electrode 23 and the transmissive pixel electrode 211 are connected along the first opening section 2211. No reflected light is emitted from the second opening section 2212, thereby significantly reducing light leakage in the reflective state. The orthographic projection of the first shielding layer 116 on the first base substrate 10 covers the orthographic projection of the second opening section 2212 on the first base substrate 10. When light passes through the transmissive pixel electrode 211 from the transmissive opening 221, it is blocked by the first shielding layer 116, ensuring that the display panel is leak-free.

[0056] The display panel involved in the present disclosure is described in detail below with reference to specific embodiments.

[0057] As shown in Figure 8, the display panel may generally include a first base substrate 10, a driving circuit layer 11 and a pixel layer 2. The driving circuit layer 11 is arranged on one side of the first base substrate 10, and the pixel layer 2 is arranged on the side of the driving circuit layer 11 away from the first base substrate 10.

[0058] The first base substrate 10 may be an inorganic material or an organic material. For example, in one embodiment of the present disclosure, the first base substrate 10 may be made of a glass material such as soda-lime glass, quartz glass, or sapphire glass, or may be made of a metal material such as stainless steel, aluminum, or nickel.

[0059] In another embodiment of the present disclosure, the first base substrate 10 may also be a flexible first base substrate 10. For example, the material of the first base substrate 10 may be polyimide (PI). The first base substrate 10 may also be a composite of multiple layers of materials. For example, in one embodiment of the present disclosure, the first base substrate 10 may include a bottom film layer, a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer stacked in sequence.

[0060] The driving circuit layer 11 is provided with a driving circuit for driving the light-emitting unit. The driving circuit is located in the display area. Any driving circuit may include a transistor, which may be a thin film transistor 110. The driving circuit layer 11 may include an active layer 113, a gate 1111, a gate insulating layer 112, a source and drain metal layer 114, and a passivation layer 115, wherein:

[0061] The active layer 113 is provided on one side of the first base substrate 10. The material of the active layer 113 can be an amorphous silicon semiconductor material, a low-temperature polysilicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material, or other types of semiconductor materials. Therefore, the thin film transistor 110 can be an N-type thin film transistor 110 or a P-type thin film transistor 110. The active layer 113 can include a channel region and two doped regions of different doping types located on both sides of the channel region.

[0062] The gate 1111 is arranged on one side of the first base substrate 10, the gate insulating layer 112 is arranged on the side of the gate 1111 away from the first base substrate 10, the gate insulating layer 112 can cover the gate 1111 and the first base substrate 10, the active layer 113 is arranged on the side of the gate insulating layer 112 away from the first base substrate 10, and the projection of the gate 1111 on the first base substrate 10 is located within the projection range of the active layer 113 on the first base substrate 10. For example, the projection of the gate 1111 on the first base substrate 10 coincides with the projection of the channel region of the active layer 113 on the first base substrate 10. The source-drain metal layer 114 is arranged on the surface of the active layer 113 away from the first base substrate 10. The source-drain metal layer 114 includes a source electrode 1141 and a drain electrode 1142. The source electrode 1141 and the drain electrode 1142 are respectively connected to the active layer 113. For example, the source electrode 1141 and the drain electrode 1142 are respectively connected to the two doped regions of the active layer 113 corresponding to each other to form a top-gate thin film transistor 110. The passivation layer 115 is arranged on the side of the source-drain metal layer 114 away from the first base substrate 10.

[0063] The pixel layer 2 includes a transmissive conductive layer 21, a planarization layer 22, and a reflective pixel electrode 23. The transmissive conductive layer 21 is a transparent conductive material and is disposed on a side of the passivation layer 115 away from the first base substrate 10. The transmissive conductive layer 21 includes a transmissive pixel electrode 211, which is connected to the drain 1142 via a first via 1151 in the passivation layer 115. It should be noted that the source 1141 and drain 1142 of the thin-film transistor 110 are opposite each other, so it can also be considered that the transmissive pixel electrode 211 is connected to the drain 1142 of the thin-film transistor 110.

[0064] The gate layer 111 also includes a gate line 1113, which is connected to the gate 1111, and a gate 1111 driving signal can be input to the gate 1111 through the gate line 1113. The source and drain metal layer 114 also includes a data line 1143, which is connected to the drain 1142 of the thin film transistor 110, and a data signal can be input to the drain 1142 through the data line 1143. The thin film transistor 110 is turned on by the gate 1111 driving signal, and the data signal is loaded on the pixel electrode through the drain 1142.

[0065] The planarization layer 22 is disposed on a side of the transmissive pixel electrode 211 away from the first base substrate 10. A transmissive opening 221 is provided on the planarization layer 22 to expose the transmissive pixel electrode 211. The width of the transmissive opening 221 gradually increases in a direction away from the first base substrate 10. The edge of the transmissive opening 221 on the side close to the first base substrate 10 is an inner contour, and the edge of the transmissive opening 221 on the side away from the first base substrate 10 is an outer contour. The distance between the orthographic projection of the outer contour on the first base substrate 10 and the orthographic projection of the inner contour on the first base substrate 10 is less than or equal to 3 μm.

[0066] As shown in Figures 9 to 12, the side surface of the transmissive opening 221 includes a first opening segment 2211 and a second opening segment 2212, which extend along the outline of the transmissive opening 221. The reflective pixel electrode 23 is disposed on the side of the planarization layer 22 away from the first base substrate 10. The reflective pixel electrode 23 has a light-transmitting opening 231. The edge of the light-transmitting opening 231 overlaps with the end of the second opening segment 2212 away from the first base substrate 10. The reflective pixel electrode 23 extends along the first opening segment 2211 until it overlaps the transmissive pixel electrode 211. The overlap between the reflective pixel electrode 23 and the transmissive pixel electrode 211 forms an overlapping region, and the width of the overlapping region is less than or equal to 1 μm.

[0067] The transmissive pixel electrode 211 is connected to the source electrode 1141 of the thin-film transistor 110 through the first via hole 1151 of the passivation layer 115. The reflective pixel electrode 23 is connected to the transmissive pixel electrode 211 through the first opening section 2211, without affecting the electrical drive of the reflective pixel electrode 23 and the transmissive pixel electrode 211. In the reflective mode of the display panel, no reflected light is reflected from the second opening section 2212 on the side of the transmissive opening 221. This overlapping arrangement reduces the overlapping area between the reflective pixel electrode 23 and the transmissive pixel electrode 211, reducing the amount of reflected light reflected from the side of the transmissive opening 221, significantly improving reflective black state light leakage, and ensuring the reflective aperture ratio of the display panel.

[0068] However, since the second opening section 2212 on the side of the transmissive opening 221 does not block the transmitted light, light leakage in the transmissive black state is likely to occur. To improve the transmissive light leakage of the display panel, the display panel further includes a first shielding layer 116. The first shielding layer 116 is provided in the same layer and material as the gate layer 111. That is, the first shielding layer 116 is provided between the gate insulating layer 112 and the first base substrate 10. The orthographic projection of the first shielding layer 116 on the first base substrate 10 covers the orthographic projection of the second opening section 2212 on the first base substrate 10.

[0069] In the transmission mode, the display panel blocks the outgoing light from the backlight source by the reflective pixel electrode 23 in the first opening section 2211 and the first blocking layer 116 in the second opening section 2212, thereby preventing the outgoing light from being emitted from the side of the transmission opening 221, thereby ensuring the transmission contrast of the display panel.

[0070] The transmissive opening 221 is polygonal in shape. The orthographic projection of the reflective pixel electrode 23 on the first base substrate 10 overlaps the first side of the inner contour of the transmissive opening 221. The length of the overlapping area is equal to the length of the first side of the inner contour, which is the shortest side of the transmissive opening 221. It will be appreciated that this allows the second opening segment 2212 to be longer and the first opening segment 2211 to be shorter, significantly reducing the overlapping area between the reflective pixel electrode 23 and the transmissive pixel electrode 211 and significantly reducing the amount of light reflected from the sides of the transmissive opening 221.

[0071] The transmissive opening 221 can be rectangular in shape, where the first side can be any one of two sides extending along a first direction, the first direction being the x-direction shown in the figure. In this embodiment, the first side of the inner contour can be the side away from the thin-film transistor 110. The light-transmitting opening 231 is also rectangular in shape, with the extended section of the reflective pixel electrode 23 located on the first side of the light-transmitting opening 231. The first side of the light-transmitting opening 231 is parallel to the first side of the inner contour of the transmissive opening 221 and is closer to the second opening section 2212 than the first side of the inner contour of the transmissive opening 221.

[0072] As shown in Figures 13 to 15 , the orthographic projection of the first shielding layer 116 on the first base substrate 10 also covers the orthographic projections of the first opening segment 2211 and the second opening segment 2212 on the first base substrate 10. The inner contour of the first shielding layer 116 is located inside the inner contour of the side surface of the transmissive opening 221, and the outer contour of the first shielding layer 116 is located outside the outer contour of the side surface of the transmissive opening 221. It is understood that the first shielding layer 116 is annular in shape. To form the shielding layer, it is only necessary to add a mask opening at a corresponding position on the mask of the gate 1111 and expose the area directly opposite the mask opening of the gate layer 111. Strict process control between the driver backplane 1 and the color filter substrate 25 is not required. Because the first shielding layer 116 is one of the patterned film layers of the driver backplane 1, the alignment accuracy between the patterned film layers of the driver backplane 1 is relatively high, generally achieving a fluctuation of less than or equal to 1.0 μm. It should be emphasized that the width of the first shielding layer 116 can be as small as possible without affecting the aperture ratio of transmission and the aperture ratio of reflection.

[0073] Gate layer 111 further includes a first reference signal portion 1112, which is connected to a first reference signal line 1114. Transmissive conductive layer 21 further includes a second reference signal portion 212, which is connected to a second reference signal line 2121. Second reference signal line 2121 is connected to first reference signal line 1114 in a peripheral region outside the display area. It will be appreciated that first reference signal portion 1112 and second reference signal portion 212 have the same potential, and that first reference signal portion 1112 and second reference signal portion 212 can be connected to the source / drain metal layer 114 or the reflective pixel electrode 23, thereby increasing the storage capacitance of drive circuit layer 11.

[0074] There is a spacer between the first reference signal portion 1112 and the first shielding layer 116 , and an orthographic projection of the first via hole 1151 on the passivation layer 115 on the first base substrate 10 is located within the orthographic projection of the spacer on the first base substrate 10 . The pixel layer 2 may further include a liquid crystal layer 24 and a color filter substrate 25. The liquid crystal layer 24 is disposed on the side of the reflective pixel electrode 23 away from the first base substrate 10. The color filter substrate 25 is disposed on the side of the liquid crystal layer 24 away from the first base substrate 10. The color filter substrate 25 includes a second base substrate 251 and a color filter layer 252. The color filter layer 252 is disposed on the side of the liquid crystal layer 24 away from the first base substrate 10. The second base substrate 251 is disposed on the side of the color filter layer 252 away from the first base substrate 10. The color filter layer 252 includes a black matrix 2521. The black matrix 2521 is provided with color resist openings 2522. Different color filter units 2524 are disposed in different color resist openings 2522. The filter units 2524 can be divided into red filter units, green filter units, and blue filter units according to their different colors. Light passing through the different color filter units 2524 is converted to different colors, thereby realizing image display.

[0075] The pixel layer 2 may also include a common electrode 26, which is disposed on the side of the color filter layer 252 closest to the first base substrate 10. A control electric field can be formed between the common electrode 26 and the pixel electrode. This control electric field alters the rotation angle of the liquid crystal molecules in the liquid crystal layer 24, causing the reflectivity or transmittance of the emitted light to change, thereby achieving light of varying brightness. As shown in FIG16 , the transmissive pixel electrode 211 extends along the first opening segment 2211 to between the reflective pixel electrode 23 and the planarization layer 22. Specifically, the transmissive pixel electrode 211 extends to the side of the planarization layer 22 away from the first base substrate 10, and the reflective pixel electrode 23 is disposed on the side of the transmissive pixel electrode 211 away from the base substrate. The orthographic projection of the transmissive pixel electrode 211 on the first base substrate 10 overlaps the first edge of the inner contour of the transmissive opening 221. In this embodiment, the first edge is a side of the transmissive opening 221 extending in the first direction close to the thin film transistor 110. The edge of the light-transmitting opening 231 overlaps with the end of the second opening section 2212 away from the first base substrate 10, and the extension section of the transmissive pixel electrode 211 is located at the first side of the light-transmitting opening 231, and the first side of the light-transmitting opening 231 is closer to the second opening section 2212 than the outer contour of the transmissive opening 221.

[0076] The display panel also includes a transfer layer 118, which is disposed between the passivation layer 115 and the planarization layer 22. The transfer layer 118 extends to connect to the transmissive pixel electrode 211 within the transmissive opening 221. The transfer layer 118 is connected to the drain electrode 1142 through a second via 1152 in the passivation layer 115. The orthographic projection of the transfer layer 118 on the first base substrate 10 overlaps the orthographic projection of the first opening segment 2211 on the first base substrate 10. The orthographic projection of the first shielding layer 116 on the first base substrate 10 overlaps the orthographic projection of the second opening segment 2212 on the first base substrate 10. The first shielding layer 116 and the transfer layer 118 are formed from the same layer and material. In other words, the transfer layer 118 and the first shielding layer 116 can be formed using a single masking process on the same conductive layer, which can be a metal layer. Of course, in other embodiments, the first shielding layer 116 and the transfer layer 118 may also be provided at different layers. For example, the first shielding layer 116 and the gate layer 111 may still be provided at the same layer and with the same material.

[0077] The primary advantage of this embodiment is that it eliminates both the vias in the planarization layer 22 and the reflective pixel electrode 23 on the side of the transmissive opening 221. The transmissive pixel electrode 211 located in the first opening section 2211 is light-transmissive, so no reflected light is emitted from the entire side of the transmissive opening 221. This completely prevents black-state light leakage caused by uneven cell thickness in the reflective mode. The drain electrode 1142 and the transmissive pixel electrode 211 are connected by a transition layer 118. The transition layer 118 and the first shielding layer 116 effectively shield the entire side of the transmissive opening 221 from black-state light leakage in the transmissive mode, significantly optimizing the display performance of the normally-black transflective display device.

[0078] The display panel also includes a second blocking layer 117, which is arranged in the same layer and material as the transfer layer 118. The orthographic projection of the second blocking layer 117 on the first base substrate 10 covers the orthographic projection of the active layer 113 on the first base substrate 10. In the reflection mode, the second blocking layer 117 blocks external light from shining on the thin film transistor 110, so that the electrical characteristics of the thin film transistor 110 are stable.

[0079] As shown in FIG17 , a plurality of first curved protrusions 222 are provided on the side of the planarization layer 22 away from the first base substrate 10. The transmissive pixel electrode 211 and the reflective pixel electrode 23 are generally thin, so their surfaces undulate along the first curved protrusions 222 on the planarization layer 22. A plurality of second curved protrusions 2112 are formed on the side of the transmissive pixel electrode 211 away from the first base substrate 10, and a plurality of third curved protrusions 232 are formed on the side of the reflective pixel electrode 23 away from the first base substrate 10. The orthographic projections of the third curved protrusions 232, the second curved protrusions 2112, and the first curved protrusions 222 on the first base substrate 10 overlap. When external light is incident on the third curved protrusions 232, diffuse reflection occurs, thereby improving the reflectivity of the display panel.

[0080] In Figures 18 and 19 , the size of the light-transmitting opening 231 of the reflective pixel electrode 23 can be adjusted. The reflective pixel electrode 23 extends along the first opening segment 2211 until it overlaps the transmissive pixel electrode 211 within the transmissive opening 221. The orthographic projection of the reflective pixel electrode 23 on the first base substrate 10 covers the first edge of the inner contour of the transmissive opening 221. The transmissive opening 221 is rectangular in shape, with the first edge of the inner contour located on the side of the transmissive opening 221 closest to the thin-film transistor 110. The light-transmitting opening 231 is also rectangular in shape, with the extended segment of the reflective pixel electrode 23 located on the first edge of the light-transmitting opening 231. The first edge of the light-transmitting opening 231 is closer to the second opening segment 2212 than the first edge of the inner contour of the transmissive opening 221. This results in a more elongated shape for the light-transmitting opening 231. However, because the orthographic projection of the second opening section 2212 of the transmissive opening 221 on the first base substrate 10 is located within the orthographic projection of the color resist opening 2522 of the black matrix 2521 on the first base substrate 10 , obvious reflected light leakage occurs in the slope area.

[0081] As shown in Figures 20 and 21, a compensation portion 2523 is provided within the color-resist opening 2522. The orthographic projection of the compensation portion 2523 on the first base substrate 10 overlaps the orthographic projection of the second opening segment 2212 on the first base substrate 10. This means that instead of providing the first shielding layer 116 on the driving circuit layer 11 to shield the second opening segment 2212, the compensation portion 2523 shields the other three sides of the transmissive opening 221, thereby preventing light leakage in the transmissive mode. The inner contour of the compensation portion 2523 is located inward of the inner contours of the three sides of the transmissive opening 221, excluding the first side, and the outer contour of the compensation portion 2523 is located outside the inner contours of the three sides of the transmissive opening 221, excluding the first side.

[0082] As shown in Figures 22 and 23 , the size of the light-transmitting opening 231 can remain unchanged. The transmissive pixel electrode 211 extends along the first opening segment 2211 to between the reflective pixel electrode 23 and the planarization layer 22. The orthographic projection of the transmissive pixel electrode 211 on the first base substrate 10 overlaps the first edge of the inner contour of the transmissive opening 221. A compensation portion 2523 is provided within the color-resist opening 2522. The orthographic projection of the compensation portion 2523 on the first base substrate 10 overlaps the orthographic projections of the first and second opening segments 2211 and 2212 on the first base substrate 10. In other words, instead of providing the first shielding layer 116 on the driving circuit layer 11, the compensation portion 2523 shields the four edges of the transmissive opening 221, thereby preventing light leakage in the transmissive mode. The inner contour of the compensation portion 2523 is located inside the inner contours of the four lateral edges of the transmissive opening 221, while the outer contour of the compensation portion 2523 is located outside the outer contours of the four lateral edges of the transmissive opening 221.

[0083] The present disclosure also provides a display device, which may include any one of the display panels of the present disclosure. The specific structure and beneficial effects of the display panel have been described in detail above, so they will not be repeated here.

[0084] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Those skilled in the art can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0085] The display device can also be an emerging wearable device, such as a virtual reality device and an augmented reality device, or a traditional electronic device, such as a mobile phone, a computer, a television, and a camcorder. These are not listed here one by one.

[0086] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, wherein: include: a first substrate; a transmissive pixel electrode, provided on one side of the first base substrate, wherein the transmissive pixel electrode is made of a transparent conductive material; a planarization layer disposed on a side of the transmissive pixel electrode away from the first base substrate, the planarization layer being provided with a transmissive opening exposing the transmissive pixel electrode, the width of the transmissive opening gradually increasing in a direction away from the first base substrate, the side surface of the transmissive opening comprising a first opening segment and a second opening segment, the first opening segment and the second opening segment extending along a contour of the transmissive opening; a reflective pixel electrode disposed on a side of the planarization layer away from the first base substrate, the reflective pixel electrode being provided with a light-transmitting opening, the reflective pixel electrode and / or the transmissive pixel electrode extending along the first opening segment until they are connected to each other, and an edge of the light-transmitting opening overlapping with an end of the second opening segment away from the first base substrate; The first shielding layer is provided between the transmissive pixel electrode and the first base substrate, and the orthographic projection of the first shielding layer on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

2. The display panel according to claim 1, wherein: The orthographic projection of the first shielding layer on the first base substrate covers the orthographic projection of the first opening segment on the first base substrate.

3. The display panel according to claim 1, wherein: The display panel further includes a driving circuit layer, which is provided between the transmissive pixel electrode and the base substrate, and includes: a gate layer, provided on one side of the first substrate; a planarization layer, provided on a side of the gate layer away from the first substrate; an active layer, disposed on a side of the planarization layer away from the first substrate; a source-drain metal layer, provided on a side of the active layer away from the first substrate, the source-drain metal layer comprising a source electrode and a drain electrode; The passivation layer is provided on a side of the source / drain metal layer away from the first substrate.

4. The display panel according to claim 3, wherein: The reflective pixel electrode extends along the first opening section to the transmissive pixel electrode exposed in the transmissive opening, and the transmissive pixel electrode is connected to the source electrode or the drain electrode through a first via hole in the passivation layer.

5. The display panel according to claim 4, wherein: The overlapping portion of the reflective pixel electrode and the transmissive pixel electrode is an overlapping region, and a width of the overlapping region is less than or equal to 1 μm. The display panel according to claim 5 , wherein: The shape of the transmission opening is polygonal, the orthographic projection of the reflective pixel electrode on the first base substrate covers the first side of the transmission opening, the length of the overlapping area is equal to the length of the first side of the transmission opening, and the first side is the shortest side of the transmission opening.

7. The display panel according to claim 3, wherein: The first shielding layer and the gate layer are provided in the same layer and made of the same material.

8. The display panel according to claim 3, wherein: The gate layer further includes a first reference signal portion, and the display panel further includes a second reference signal portion. The second reference signal portion is provided in the same layer and material as the transmissive pixel electrode, and is connected to the first reference signal portion in a peripheral area outside the display area.

9. The display panel according to claim 8, wherein: A spacer is provided between the first reference signal portion and the first shielding layer, and an orthographic projection of the first via hole on the passivation layer on the first base substrate is located within an orthographic projection of the spacer on the first base substrate.

10. The display panel according to claim 3, wherein: The transmissive pixel electrode extends along the first opening segment to between the reflective pixel electrode and the planarization layer. The display panel also includes a transfer layer, which is arranged between the passivation layer and the planarization layer. The transfer layer is connected to the source or the drain through a second via hole on the passivation layer. The transfer layer extends to be connected to the transmissive pixel electrode in the transmissive opening, and the orthographic projection of the transfer layer on the first base substrate covers the orthographic projection of the first opening segment on the first base substrate.

11. The display panel according to claim 10, wherein: The first shielding layer and the transfer layer are provided in the same layer and made of the same material.

12. The display panel according to claim 10, wherein: The display panel further includes a second shielding layer, which is provided in the same layer and material as the transfer layer, and the orthographic projection of the second shielding layer on the first base substrate covers the orthographic projection of the active layer on the first base substrate.

13. The display panel according to claim 1, wherein: The planarization layer is provided with a plurality of first arc-shaped protrusions on a side away from the first base substrate, the transmissive pixel electrode is formed with a plurality of second arc-shaped protrusions on a side away from the first base substrate, and the reflective pixel electrode is formed with a plurality of third arc-shaped protrusions on a side away from the first base substrate.

14. The display panel according to claim 1, wherein: The display panel further includes a color filter layer, which includes a black matrix. A color resist opening is provided on the black matrix. A compensation portion is provided in the color resist opening. The orthographic projection of the compensation portion on the first base substrate covers the orthographic projection of the second opening segment on the first base substrate.

15. The display panel according to claim 14, wherein: The display panel further includes a liquid crystal layer, and the liquid crystal layer is arranged between the reflective pixel electrode and the color filter layer.

16. The display panel according to claim 1, wherein The edge of the transmission opening on the side close to the first substrate is an inner contour, and the edge of the transmission opening on the side away from the first substrate is an outer contour. The distance between the orthographic projection of the outer contour on the first substrate and the orthographic projection of the inner contour on the first substrate is less than or equal to 3 μm.

17. A display device, wherein: The display panel comprises the display panel according to any one of claims 1 to 16.

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