CN111739917A

CN111739917A - Display panel and display device

Info

Publication number: CN111739917A
Application number: CN202010616831.7A
Authority: CN
Inventors: 陈娴; 韩立静; 李晶晶
Original assignee: Shanghai Tianma AM OLED Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-10-02
Anticipated expiration: 2040-06-29
Also published as: CN111739917B

Abstract

The embodiment of the invention provides a display panel and a display device. The method comprises the following steps: a display area and a non-display area, wherein the non-display area surrounds the display area; the display area comprises a substrate, light-emitting pixels and touch electrodes which are arranged in a stacked mode; the non-display area comprises the substrate and touch-control wires which are arranged in a stacked mode; the light-emitting pixel comprises a semitransparent electrode, an organic light-emitting material and a reflecting electrode; in the non-display area, a virtual reflection layer is arranged on one side, away from the substrate, of the touch routing. On one hand, the touch control wiring is shielded by the virtual reflection layer, so that the difference of the reflectivity of the touch control wiring and the reflectivity of the display area is reduced, and the integral black visual effect is realized.

Description

Display panel and display device

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of display, in particular to a display panel and a display device.

[ background of the invention ]

The main features of an OLED, which is an electroluminescent device using a multi-layer organic thin film structure, are that it is easy to fabricate and requires only a low driving voltage, making the OLED very prominent for flat panel display applications. Compared with an LCD, the OLED display screen is thinner and lighter, has high brightness, low power consumption, quick response, high definition, good flexibility and high luminous efficiency, and can meet the new requirements of consumers on display technology. More and more display manufacturers worldwide are invested in research and development, and the industrialization process of the OLED is greatly promoted.

With the great development of the OLED display technology, not only can an excellent display effect be achieved in a bright screen state, but also the display screen state is required to be black, and obvious frame boundaries are difficult to distinguish. However, the display panel always has obvious black circles, so that the effect of integral black is poor.

[ summary of the invention ]

In view of this, the embodiments of the present invention provide a method for solving the technical problem that the black circle in the prior art cannot be turned into black.

In one aspect, an embodiment of the present invention provides a display panel, including: the method comprises the following steps: a display area and a non-display area, wherein the non-display area surrounds the display area; the display area comprises a substrate, light-emitting pixels and touch electrodes which are arranged in a stacked mode; the non-display area comprises the substrate and touch-control wires which are arranged in a stacked mode; the light-emitting pixel comprises a semitransparent electrode, an organic light-emitting material and a reflecting electrode; in the non-display area, a virtual reflection layer is arranged on one side, away from the substrate, of the touch routing.

In another aspect, an embodiment of the present invention provides a display device, including the foregoing display panel.

One of the above technical solutions has the following beneficial effects: the virtual reflection layer is arranged on the touch wiring of the non-display area, the reflectivity of the non-display area is adjusted, and the reflectivity of the non-display area is consistent with that of the display area, so that the phenomenon that the reflectivity of the touch wiring and the reflectivity of the reflection electrode are inconsistent is avoided, and the effect of integral black under the state of a screen is achieved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a display panel of one embodiment of the present application;

FIG. 2 is an enlarged partial schematic view of region C of FIG. 1;

FIG. 3 is a schematic cross-sectional view of DD' of FIG. 1;

FIG. 4 is an enlarged partial schematic view of a gap region of an embodiment of the present application;

FIG. 5 is an enlarged partial schematic view of a gap region of another embodiment of the present application;

FIG. 6 is an enlarged partial schematic view of a gap region of yet another embodiment of the present application;

FIG. 7 is an enlarged partial schematic view of a gap region of yet another embodiment of the present application;

FIG. 8 is an enlarged partial schematic view of the area C of FIG. 1;

FIG. 9 is an enlarged partial schematic view of a further region C of FIG. 1;

FIG. 10 is an enlarged partial schematic view of a gap region of an embodiment of the present application;

FIG. 11 is an enlarged partial schematic view of the second repeat unit of FIG. 10;

FIG. 12 is an enlarged partial schematic view of a gap region of another embodiment of the present application;

FIG. 13 is an enlarged partial schematic view of the second repeat unit of FIG. 12;

FIG. 14 is a schematic enlarged view of a portion of the third repeating unit shown in FIG. 13;

FIG. 15 is another schematic cross-sectional view of DD' of FIG. 1;

FIG. 16 is a schematic cross-sectional view of a further DD' of FIG. 1;

FIG. 17 is a schematic cross-sectional view of a further DD' of FIG. 1;

FIG. 18 is an enlarged partial schematic view of a further region C of FIG. 1;

FIG. 19 is a schematic cross-sectional view of a further DD' of FIG. 1;

fig. 20 is a schematic view of a display device according to an embodiment of the present application.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used to describe the repeating units in the embodiments of the present invention, the repeating units should not be limited to these terms, which are used only to distinguish the repeating units from one another. For example, a first repeat unit may also be referred to as a second repeat unit, and similarly, a second repeat unit may also be referred to as a first repeat unit, without departing from the scope of embodiments of the present invention.

The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

The inventors have found that when the display panel and the cover plate are aligned and bonded, due to the alignment tolerance, a gap is usually provided between the ink area of the cover plate and the display area in order to avoid the ink area of the cover plate from being blocked by the display area.

The display area is provided with a pixel circuit, a light-emitting pixel and a touch electrode, wherein the light-emitting pixel comprises a reflecting electrode for improving the light-emitting efficiency and avoiding the irradiation of a transistor channel in the pixel circuit. The touch electrode is usually disposed in a non-opening region of the pixel to avoid shielding the pixel, or a transparent electrode is directly used. Therefore, the reflectance of the display area is greatly affected by the reflective electrode of the light-emitting pixel. The non-display area comprises a grid driving circuit and touch control wiring. As described above, the touch trace is exposed between the gap between the ink area and the display area. Due to the limitations of manufacturing efficiency and process cost, the bridging of the touch-control wiring and the touch-control electrode of the metal grid of the display area or the transparent touch-control electrode is metal of the same layer, and the display area generally sets the reflectivity of the metal bridging to be lower, so as to avoid the visibility problem of the bridging. In contrast, in the display region, the reflection rate of the reflective electrode is set to be high in order to increase the light utilization rate and the external quantum efficiency as much as possible. In order to meet respective requirements, the touch wire and the light-emitting pixels are designed towards two opposite directions, so that the difference of the reflectivity of the touch wire and the reflectivity of the light-emitting pixels is extremely large. When the reflectivity of the printing ink is adjusted to be consistent with that of the display area, the difference between the reflectivity of the touch routing line in the gap area and the reflectivity of the display area and the printing ink area is extremely large, and finally, an obvious black ring is generated, so that the problem that the effect of the display panel on screen-saving integration is poor is solved.

The prior art always adopts a mode of adjusting the reflectivity of the shading ink to solve the problem of integral black, and the inventor analyzes the problem that the technical problem of the black ring is not only the problem of integral black, and the solution has a major defect and cannot radically cure the black ring.

Referring to fig. 1 to3, fig. 1 is a schematic view of a display panel according to an embodiment of the present application; FIG. 2 is an enlarged partial schematic view of region C of FIG. 1; FIG. 3 is a schematic cross-sectional view of DD' of FIG. 1;

referring to fig. 1, fig. 2 and fig. 3, the present embodiment is an ON-CELL touch display panel, which includes an array substrate ASu stacked ON top of each other, and a driving layer disposed ON the array substrate, where the driving layer includes a thin film transistor for manufacturing a pixel circuit to drive a light emitting pixel. The driving layer includes a pixel circuit Dr in the display region and a gate driving circuit VSR in the non-display region. The pixel circuit Dr is separated from the light emitting pixel by the planarization layer PLN, and the electrode of the light emitting pixel is electrically connected to the pixel circuit Dr through a via hole in the planarization layer PLN. Here, taking the top emission pixel structure as an example, the reflective electrode RE is electrically connected to the pixel circuit Dr through a via hole. The light emitting pixel further includes an organic light emitting material OM disposed in the opening of the pixel defining layer PDL, and a translucent electrode SE on the organic light emitting material OM. The touch panel includes a package cover TSu, a bridging metal Br and a touch trace TL on the package cover TSu, a first insulating layer In1, a touch electrode TE, and a second insulating layer In 2. The package cover TSu and the array substrate ASu are packaged by a package adhesive Fr, and the support posts PS are used to support the package cover TSu. The display panel further includes a cover glass CG. The protective glass comprises Ink, and the protective glass CG is attached to the touch panel through optical cement OCA. The non-display area NA of the INK covering portion on the protective glass CG forms an INK area INK, and the gap area BF between the INK area INK and the display area AA is not covered with the INK.

In order to realize a full-color display, three kinds of pixels, red, green, and blue, are generally included, and the shapes of the three kinds of pixels are different. Referring to fig. 2, when the display panel includes the first light-emitting pixel, the second light-emitting pixel and the third light-emitting pixel as seen from the top view, it is apparent that the first reflective electrode RE1, the second reflective electrode RE2 and the third reflective electrode RE3 are regularly arranged in the display region. In the gap area BF, the reflectivity of the touch trace TL is lower than that of the reflective electrode RE, and the area of the touch trace TL is much lower than that of the reflective electrode RE.

In the prior art, the reflectivity of the INK area INK is adjusted to be close to or consistent with that of the display area AA, however, the reflectivity of the gap area BF and the reflectivity difference between the INK area INK and the display area AA on both sides are large, so that the gap area BF is visible to naked eyes obviously, an obvious black ring phenomenon occurs, and real integral black is difficult to realize. Referring to fig. 1, the oblique line filled gap BF in the prior art is clearly visible to the naked eye.

In the present application, please refer to fig. 1, fig. 2 and fig. 3, the present application includes a display area AA and a non-display area NA surrounding the display area, where the display area AA includes an array substrate ASu, a light-emitting pixel and a touch electrode TE, which are stacked, and the light-emitting pixel includes a semi-transparent electrode SE, an organic light-emitting material OM and a reflective electrode RE; the non-display area comprises an array substrate ASu and a touch wiring TL, and a virtual reflection layer DRL is arranged on one side, away from the array substrate ASu, of the touch wiring TL in the non-display area. The virtual reflection layer DRL is used for adjusting the reflectivity of the gap area BF, so that the reflectivity of the gap area BF and the reflectivity of the display area AA are close to or consistent, and the problem of a black circle is avoided.

In another embodiment of the present application, please refer to fig. 4, 5 and 6, fig. 4 is a schematic partial enlarged view of a gap region of an embodiment of the present application; FIG. 5 is an enlarged partial schematic view of a gap region of another embodiment of the present application; FIG. 6 is an enlarged partial schematic view of a gap region of yet another embodiment of the present application; the display area AA includes a first repeating unit RU1 repeatedly arranged, the first repeating unit RU1 includes a plurality of light emitting pixels, and the reflective electrode RE in the first repeating unit RU1 has a first density; the virtual reflection layer includes virtual reflection portions DRE and opening portions OP, the opening portions OP are uniformly dispersed among the virtual reflection portions DRE, and the opening portions OP have a second density; the sum of the first density and the second density is between 0.9 and 1.1 inclusive. That is, the density of the virtual reflection portions DRE is close to the first density. The reflectivities of the gap area BF and the display area AA are made to be close to or even equal, thereby achieving the effect of integral black visually to the human eye.

Further, the opening portion OP is located between adjacent touch traces TL, and an overlapping area of the opening portion OP and the touch traces TL is not greater than 10% of a total area of the touch traces TL. The area of the touch trace TL leaking from the opening OP is reduced, and the problem of visibility of the touch trace due to excessive leakage of the touch trace is avoided.

Further, the inventors have studied and found that the black circle is affected by the patterning of the reflective electrode RE in the display area AA in addition to the reflective electrode reflectivity in the display area. To reduce the pattern difference between the dummy reflective layer and the reflective electrodes, please refer to fig. 4, in the first repeating unit RU1, the reflective electrodes have a first width W1, and adjacent reflective electrodes RE have a first distance D1 therebetween; the opening part has a second width D2, and the difference between the second width D2 and the first distance D1 is less than 10% of the first distance; the opening parts have a second spacing W2 therebetween, and the difference between the second spacing W2 and the first width W1 is less than 10% of the first width. The width of the virtual reflecting parts is close to that of the reflecting electrodes, the interval which cannot be reflected between the virtual reflecting parts is also close to that of the interval which cannot be reflected between the reflecting electrodes, the arrangement of the reflecting electrodes in the display area can be simulated on the imaging, and therefore the visibility of the black circle is weakened.

Further, the opening portion may include a stripe-shaped opening portion SOP and an island-shaped opening portion IOP, and fig. 4 illustrates the stripe-shaped opening portion. However, in fig. 4, the entire stripe interval is not formed in the display area AA. Seen along the row direction, the strip-shaped gaps are not complete, are all isolated island-shaped gaps in the row direction, and are not continuous; the rows are spaced in a row direction. With further reference to FIG. 5, FIG. 5 employs a bar-shaped opening SOP and an island-shaped opening IOP. The positions of the strip-shaped opening portions SOP are corresponding to the positions of the continuous strip-shaped intervals between the reflecting electrode columns, the intervals between the island-shaped opening portions IOP and the reflecting electrodes adjacent in the column direction are correspondingly arranged, and the graph of the reflecting electrode RE in the display area AA is simulated in the gap area BF, so that the reflectivity of light is consistent, the positions of light reflection are consistent, and the visibility of black circles is weakened.

Since the driving circuits for driving the light emitting pixels are arranged in an array, the connection points with the reflective electrodes RE and the driving circuits are also arranged in a matrix, however, the OLED display panel usually adopts a rendering manner for displaying due to different color lifetimes and luminances, and therefore the reflective electrodes of the light emitting pixels are not arranged in a matrix, and therefore, the upper right corner of the first reflective electrode RE1 of the first light emitting pixel has a connection Via, which occupies the interval between the 2k-1 th and the 2 k-th columns, so that the interval between the 2k-1 th and the 2 k-th columns is discontinuous. Therefore, in the embodiment corresponding to fig. 6, the stripe opening SOP is changed to the island opening IOP, and in the embodiment of fig. 6, the interval between the reflective electrodes RE in the column direction corresponding to the first island opening IOP1 is adopted; the second island-shaped opening IOP2 is used to correspond to the interval between the 2k-1 and the 2 k-th columns, and the third island-shaped opening IOP3 is used to correspond to the continuous stripe interval between the 2k and the 2k +1 th columns. On the basis of the previous embodiment, the pattern of the reflective electrode RE in the display area AA is simulated in the gap area BF more accurately, so that the consistency between the pattern of the virtual reflective layer in the gap area and the pattern of the reflective electrode in the display area is further improved, and the visibility of the black circle is further weakened.

It should be noted that the third island-shaped opening IOP3 may also be connected in the column direction to form a strip-shaped opening SOP, and the third island-shaped opening IOP3 is provided in this embodiment to electrically connect the left and right virtual reflection portions DRE, and to ground or connect them to a fixed potential, so as to enhance the shielding effect and improve the anti-interference effect.

Since the INK area INK and the display area AA are different in substances causing reflection, refraction, and scattering of light, the INK reflectance of the INK area cannot be adjusted in all dimensions to be consistent with the display area AA. When the reflectances of the gap area BF and the display area AA are adjusted to be uniform, a clear boundary line exists between the INK area INK and the gap area BF, so that the human eye can observe the boundary line. Therefore, in another embodiment of the present application, please refer to fig. 7, fig. 7 is a schematic partial enlarged view of a gap region in another embodiment of the present application;

in this embodiment, at least a part of the virtual reflective layer is located between the display area and the ink area, the opening is a bar-shaped opening SOP, and the width of the bar-shaped opening SOP gradually increases or gradually decreases along the direction from the display area to the ink area; alternatively, the opening part is an island-shaped opening part IOP, and the area of the island-shaped opening part IOP gradually increases or gradually decreases along the direction in which the display area points to the ink area. The uniform transition design of reflectivity between the display area AA and the INK area INK ensures that the boundary of the gap area BF and the INK area INK is fuzzified, the visibility of a boundary is reduced, and the high-quality screen-turning integral black effect is realized.

Further, the inventors have studied and found that the black circle is affected by the patterning of the reflective electrode RE in the display area AA in addition to the reflective electrode reflectivity in the display area. Referring to fig. 2, 8 and 9, fig. 8 is a partially enlarged view of a region C in fig. 1; FIG. 9 is an enlarged partial schematic view of a further region C of FIG. 1; several arrangements of the reflective electrodes RE of the display area AA are shown in fig. 2, 8 and 9. In fig. 2, 8 and 9, the total areas of the first reflective electrode RE1, the second reflective electrode RE2 and the third reflective electrode RE3 are different, so that the design of the virtual reflective layer DRL of the present embodiment is matched with the design of the reflective electrode RE of the display area in order to achieve better black integration effect and avoid the generation of black circles. Specifically, please refer to fig. 10, fig. 10 is a schematic diagram illustrating a partial enlarged gap region according to an embodiment of the present application; in the present embodiment, the display region includes a first repeating unit RU1 repeatedly arranged, the first repeating unit RU1 includes a plurality of light emitting pixels, and the reflective electrode RE in the RU first repeating unit has a first density; referring to fig. 10, the repeating unit in the dashed line box is RU1, and in the present embodiment, the first repeating unit RU1 includes two first light-emitting pixels, two second light-emitting pixels, and two third light-emitting pixels; accordingly, the first repeating unit RU1 includes two first reflective electrodes RE1, two second reflective electrodes RE2, and two third reflective electrodes RE 3. The adjacent first repeating units are closely arranged to form a display area. The density of the reflective electrodes RE in the first repeating unit RU1 refers to a ratio of the sum of areas of the respective reflective electrodes to the total area of the first repeating unit. In the embodiment of fig. 10, it refers to the ratio of the sum of the areas of the first reflective electrode RE1, the second reflective electrode RE2 and the third reflective electrode RE3 in the first repeating unit RU1 to the area of the first repeating unit RU 1.

In the gap region BF, the dummy reflective layer DRL includes the second repeating unit RU2 repeatedly arranged, and the dummy reflective layer in the second repeating unit RU2 has the third density. The second repeating units RU2 are closely arranged to form the virtual reflective layer DRL. It should be noted that, since the width of the gap area BF is not necessarily exactly an integral multiple of the second repeating unit, in the edge area, part of the second repeating unit may be incomplete. The third density refers to a ratio of the sum of the areas of the reflective portions of the virtual reflective layer DRL in the second repeating unit RU2 to the total area of the second repeating unit. The difference between the third density and the first density is less than or equal to 10% of the first density. Since the physical meaning of the first density and the third density is substantially equivalent to the area of the reflecting portion per unit area, that is, the area ratio of the reflecting portion. In the embodiment, the difference between the first density and the third density on the display area AA and the touch trace TL is not greater than 10%, and the key parameter affecting the reflectivity of the virtual reflective electrode DRL is close to or even equal to that of the reflective electrode in the display area in the graphical setting of the virtual reflective electrode DRL, so that the two electrodes are better viewed by eyes and are close to the same color in the screen extinguishing state, thereby avoiding the occurrence of black circles and realizing better integral black effect.

Further, in some cases, in the case that the machine-test reflectivity of the INK area INK, the gap area BF, and the display area AA is less than the preset threshold, the human eye still can detect a slight black circle. The inventor researches and finds that the reason is that the dimension of the test is relatively single, and the index of the test and the integral black are not in an equivalent relation. With continued reference to fig. 2, 8 and 9, the reflective electrodes RE in the three display areas have different total areas, and the specific areas of the reflective electrodes and the spacing patterns of the reflective electrodes are different. In fig. 2, when viewed along the row direction, there are no complete stripe intervals, and they are all island-shaped intervals in the row direction, and in the column direction, there are continuous stripe intervals between the 2k and 2k +1 th columns, and there are island-shaped intervals between the 2k-1 nd and 2k nd columns, where k is a positive integer. I.e. it is an island-like spacing and a vertical bar-like spacing. Referring to fig. 8, in the row direction, there is a stripe-shaped interval between the 2 m-th row and the 2m + 1-th row, and an island-shaped interval between the 2 m-1-th row and the 2 m-th row, where m is a positive integer; along the column direction, the strip-shaped gaps are not complete and are all isolated island-shaped gaps; that is, the embodiment of fig. 8 is shown with an island-like spacing and a horizontal stripe-like spacing. In the embodiment of fig. 9, there is no complete stripe-like space in either the row direction, the column direction or the diagonal direction, and the island-like spaces are arranged along the diagonal direction. That is, although the reflective electrodes of the above three embodiments are arranged in an island shape, the arrangement of the non-reflective regions (the intervals between the reflective electrodes) is different greatly, so that, in order to further reduce the reflection difference between the gap region BF and the display region AA, please refer to fig. 10 and fig. 11 in this embodiment, and fig. 11 is a schematic enlarged view of a part of the second repeating unit in fig. 10; the reflective electrode in first repeating unit RU1 has a first pattern; the virtual reflective layer in the second repeating unit RU2 has a second pattern; the second graph comprises a first part Pa1 and a second part Pa2, the first part Pa1 is completely overlapped with at least part of the first graph, and the part except the first part Pa1 in the second graph is the second part Pa 2; in the second pattern, the first portion Pa1 occupies an area not less than 90% of the total area of the second pattern. The human eye can perceive not only the overall reflectance but also the visual difference due to the difference in the pattern of the reflective portion. In the embodiment, more than 90% of the patterns in the virtual reflective layer DRL are congruent to the reflective electrode RE, so that the density angle of the patterns is close to or even equal to that of the patterns, and the angle of the patterned shapes is also close to or even equal to that of the patterns, so that the difference between the patterns viewed by naked eyes is difficult to distinguish by human eyes, and the black circle is completely eliminated.

Further, when a finger of a person touches the touch trace TL, a capacitance is generated between the finger and the touch trace TL. Therefore, interference is generated on the detection of touch, and the embodiment can shield the interference of the human hand to the touch trace TL by using the virtual reflective electrode DRL. Specifically, with continued reference to fig. 11, the first repeating unit RU1 includes a plurality of reflective electrodes RE isolated from each other, and in the second pattern, adjacent ones of the second portions Pa2 are connected to each other. It should be noted that the second portions Pa2 outside the dashed line box of the second repeating unit RU2 are the second portions Pa2 of the adjacent second repeating units, and the adjacent second portions Pa2 are connected to each other. Therefore, the embodiment can realize the virtual reflection layer DRL of the touch trace TL which is entirely covered, thereby shielding the interference of human hands. Furthermore, the virtual reflecting layer DRL can be grounded or connected with a fixed potential, so that the shielding effect is enhanced, and the anti-interference effect is improved. Further, the width of the second portion Pa2 may be the minimum value of the width that can be realized by the process, so as to reduce the influence of the second portion on the reflectivity and improve the transition effect of the integral black.

Since the INK area INK and the display area AA are different in substances causing reflection, refraction, and scattering of light, the INK reflectance of the INK area cannot be adjusted in all dimensions to be consistent with the display area AA. When the reflectances of the gap area BF and the display area AA are adjusted to be uniform, a clear boundary line exists between the INK area INK and the gap area BF, so that the human eye can observe the boundary line. Therefore, in another embodiment of the present application, please refer to fig. 12, in which fig. 12 is a schematic partial enlarged view of a gap region in another embodiment of the present application; the virtual reflective layer DRL further includes a third repeating unit RU3 including a repeating arrangement, the third repeating unit RU3 is located between the first repeating unit RU1 and the second repeating unit RU2, and the virtual reflective layer in the third repeating unit RU3 has a fourth density, the fourth density being between the first density and the third density. The reflectivity is designed in a transitional mode between the display area AA and the INK area INK, so that the boundary of the gap area BF and the INK area INK is blurred, the visibility of a boundary is reduced, and the high-quality screen-turning and screen-turning integrated black effect is achieved.

On the basis, in order to further improve the effect of integral black at the patterning angle, the density angle of the patterns of the two are close to or even equal to each other, and the angle of the patterned shape is also close to or even equal to each other, please refer to fig. 13 and 14, fig. 14 is a schematic enlarged view of the second repeating unit in fig. 13; FIG. 14 is a schematic enlarged view of a portion of the third repeating unit shown in FIG. 12; the reflective electrode RE in the first repeating unit RU1 has a first pattern; the virtual reflective layer DRL in the second repeating unit RU2 has a second pattern; the virtual reflective layer DRL in the third repeating unit RU3 has a third pattern; the second pattern comprises a third portion Pa3 similar to at least part of the first pattern and a fourth portion Pa4, the portion of the second pattern other than the third portion Pa3 being a fourth portion Pa 4; the third graphic includes a fifth portion Pa5 and a sixth portion Pa6, the fifth portion Pa5 being similar to at least a portion of the first graphic, a portion of the third graphic other than the fifth portion Pa5 being the sixth portion Pa 6; in the second pattern, the area occupied by the third portions Pa3 is not less than 90% of the total area of the second pattern; in the third pattern, the area occupied by the fifth portions Pa5 is not less than 90% of the total area of the third pattern. The human eye can perceive not only the overall reflectance but also the visual difference due to the difference in the pattern of the reflective portion. In the embodiment, more than 90% of the patterns in the virtual reflective layer DRL are similar to the reflective electrode RE, so that the density angle of the patterns is close to or even equal to that of the patterns, and the angle of the patterned shapes is close to or even equal to that of the patterns, so that the difference between the patterns viewed by naked eyes is difficult to distinguish by human eyes, and the black circle is completely eliminated. In addition, the area of the pattern is integrally increased or decreased by adopting the principle of the similar pattern in the embodiment to adjust the density transition of the reflection pattern, so that the difference between the viewing angle of human vision and the display area is reduced.

Further, when a finger of a person touches the touch trace TL, a capacitance is generated between the finger and the touch trace TL. Therefore, interference is generated on the detection of touch, and the embodiment can shield the interference of the human hand to the touch trace TL by using the virtual reflective electrode DRL. Specifically, with continued reference to fig. 13 and 14, the first repeating unit RU1 includes a plurality of reflective electrodes RE isolated from each other, and adjacent ones of the fourth portions Pa4 are connected to each other in the second pattern. It should be noted that the fourth portions Pa4 outside the dashed line box of the second repeating unit RU2 are the fourth portions Pa4 of the adjacent second repeating units, and the adjacent fourth portions Pa4 are connected to each other. In the third pattern, adjacent sixth portions Pa6 are connected to each other. Note that the sixth portions Pa6 outside the dashed line box of the third repeating unit RU3 are the sixth portions Pa6 of the adjacent third repeating units, and the adjacent sixth portions Pa6 are connected to each other. Therefore, the embodiment can realize the virtual reflection layer DRL of the touch trace TL which is entirely covered, thereby shielding the interference of human hands. Furthermore, the virtual reflecting layer DRL can be grounded or connected with a fixed potential, so that the shielding effect is enhanced, and the anti-interference effect is improved.

Referring to FIG. 15, FIG. 15 is a schematic cross-sectional view of DD' of FIG. 1; the present application is applicable to flexible on-cell touch display panels,

in this embodiment, the display panel includes an array substrate ASu stacked on top of another, and a driving layer disposed on the array substrate, where the driving layer includes a thin film transistor for forming a circuit to drive the light emitting pixels. The driving layer includes a pixel circuit Dr in the display region and a gate driving circuit VSR in the non-display region. The pixel circuit Dr is separated from the light emitting pixel by the planarization layer PLN, and the electrode of the light emitting pixel is electrically connected to the pixel circuit Dr through a via hole in the planarization layer PLN. Here, taking the top emission pixel structure as an example, the reflective electrode RE is electrically connected to the pixel circuit Dr through a via hole. The light emitting pixel further includes an organic light emitting material OM disposed in the opening of the pixel defining layer PDL, and a translucent electrode SE on the organic light emitting material OM. The pixel definition layer PDL is provided with a support column PS for supporting a mask plate during vapor deposition. The flexible encapsulation layer covers the array substrate ASu, and includes a first inorganic layer CVD1, an organic layer IJP, and a second inorganic layer CVD 2. The bridging metal Br, the touch trace TL, the first insulating layer In1, the touch electrode TE, and the second insulating layer In2 are sequentially disposed on the second inorganic layer CVD 2. The display panel further includes a cover glass CG. The protective glass comprises Ink, and the protective glass CG is attached to the touch panel through optical cement OCA. The non-display area NA of the INK covering portion on the protective glass CG forms an INK area INK, and the gap area BF between the INK area INK and the display area AA is not covered with the INK. In this embodiment, the dummy reflective layer DRL may be disposed between the first insulating layer In1 and the second insulating layer In2, and the reflective metal layer is protected by the second insulating layer to prevent it from being contaminated and affecting its reflectivity.

In the embodiment of the on-cell touch panel corresponding to fig. 3 and fig. 15, the difference between the heights of the virtual reflective layer on the on-cell and the reflective electrode in the display area from the human eye is considered, from the same human eye height observation perspective, the observation angle at the position closer to the human eye is relatively larger, the reflectivity is higher, and the design of the increased reflective metal layer density can be slightly smaller than the density of the reflective electrode in the display area by considering that the heights of the reflective electrode in the display area and the increased virtual reflective layer are smaller by about 0.3mm and are about 20cm relative to the human eye height. Specifically, the density of the reflective metal layer may be between 0.9 and 0.95 times (inclusive) the density of the reflective electrode in the display area.

In another embodiment of the present application, please refer to FIGS. 16-18, FIG. 16 is a schematic cross-sectional view of DD' of FIG. 1; FIG. 17 is a schematic cross-sectional view of a further DD' of FIG. 1; FIG. 18 is an enlarged partial schematic view of a further region C of FIG. 1; the application is suitable for an in-cell touch display panel,

in this embodiment, the display panel includes an array substrate ASu stacked on top of another, and a driving layer disposed on the array substrate, where the driving layer includes a thin film transistor for forming a circuit to drive the light emitting pixels. The driving layer includes a pixel circuit Dr in the display region and a gate driving circuit VSR in the non-display region. The pixel circuit Dr is separated from the light emitting pixel by the planarization layer PLN, and the electrode of the light emitting pixel is electrically connected to the pixel circuit Dr through a via hole in the planarization layer PLN. Here, taking the top emission pixel structure as an example, the reflective electrode RE is electrically connected to the pixel circuit Dr through a via hole. The light emitting pixel further includes an organic light emitting material OM disposed in the opening of the pixel defining layer PDL, and a translucent electrode SE on the organic light emitting material OM. The touch panel includes a package cover TSu, and the package cover TSu includes a bridge metal Br, a first insulating layer In1, a touch electrode TE, and a second insulating layer In2, which are sequentially disposed on a side facing the array substrate. The package cover TSu and the array substrate ASu are packaged by a package adhesive Fr, and the support posts PS are used to support the package cover TSu. The touch electrode TE and the touch trace TL are connected by a connection trace CL, and the connection trace CL and the bridge Br are arranged on the same layer. The touch traces are located on the array substrate ASu, the connection traces CL are located on the package cover TSu, and the connection traces and the touch traces are electrically connected through the transmission pads TP. Referring to fig. 17, the transmission pads TP are stacked by the respective insulating layers and the conductive layers of the package cover TSu and the array substrate ASu, so that they can simultaneously contact the connection traces CL and the touch traces TL. In this embodiment, referring to fig. 16, the virtual reflective layer DRL covering the touch trace TL and the reflective electrode RE are formed on the same layer, and the process of forming the reflective electrode RE is multiplexed. Therefore, the present embodiment can achieve the effect of integral black without increasing the manufacturing process. The cost is saved, and the efficiency is improved.

Further, the display panel further includes a cover glass CG. The protective glass comprises Ink, and the protective glass CG is attached to the touch panel through optical cement OCA. The non-display area NA of the INK covering portion on the protective glass CG forms an INK area INK, and the gap area BF between the INK area INK and the display area AA is not covered with the INK.

Further, in order to make the reflectivity of the dummy reflective layer and the reflective electrode the same, please refer to fig. 19, fig. 19 is a schematic cross-sectional view of a DD' in fig. 1; in the present embodiment, the reflective electrode RE includes a first transparent layer ITO1, a second transparent layer ITO2, and a first reflective layer R1 between the first and second transparent layers; the virtual reflective layer DRL includes a third transparent layer ITO3, a fourth transparent layer ITO4, and a second reflective layer R2 between the third and fourth transparent layers. In this embodiment, the structure of the dummy reflective layer is identical to the structure of the reflective electrode, so that the reflectances of the dummy reflective layer and the reflective electrode are identical. And the reflective layer in the middle can be protected by the two transparent layers, so that the non-uniform change of the reflectivity of the reflective layer caused by non-uniform oxidation is prevented, and a long-acting integral black effect is realized.

The specific structure of the display panel 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device 1000 shown in fig. 20 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, comprising:

a display area and a non-display area, wherein the non-display area surrounds the display area;

the display area comprises an array substrate, light-emitting pixels and touch electrodes which are arranged in a stacked mode; the non-display area comprises the array substrate and touch-control wires which are arranged in a stacked mode; the light-emitting pixel comprises a semitransparent electrode, an organic light-emitting material and a reflecting electrode;

in the non-display area, a virtual reflection layer is arranged on one side, away from the array substrate, of the touch routing.

2. The display panel according to claim 1,

the display area comprises a first repeating unit which is repeatedly arranged and comprises a plurality of luminous pixels, and a reflecting electrode in the first repeating unit has a first density;

the virtual reflection layer includes virtual reflection parts and opening parts, the opening parts are uniformly dispersed among the virtual reflection parts, and the opening parts have a second density;

the sum of the first density and the second density is between 0.9 and 1.1.

3. The display panel according to claim 2,

the opening portion is located between the adjacent touch control wires, and the overlapping area of the opening portion and the touch control wires is not larger than 10% of the total area of the touch control wires.

4. The display panel according to claim 3,

the non-display area of the display panel further comprises an ink area, and at least part of the virtual reflection layer is positioned between the display area and the ink area;

the opening part is a strip-shaped opening part, and the width of the strip-shaped opening part gradually increases or gradually decreases along the direction of the display area pointing to the ink area; alternatively, the first and second electrodes may be,

the opening part is an island-shaped opening part, and the area of the island-shaped opening part gradually increases or gradually decreases along the direction of the display area pointing to the ink area.

5. The display panel according to claim 3,

in the first repeating unit, the reflective electrodes have a first width, and adjacent reflective electrodes have a first interval therebetween;

the opening part has a second width, and the difference between the second width and the first interval is less than 10% of the first interval;

the opening parts are arranged at a second interval, and the difference between the second interval and the first width is less than 10% of the first width.

6. The display panel according to claim 1,

the virtual reflection layer comprises a second repeating unit which is repeatedly arranged, wherein the virtual reflection layer in the second repeating unit has a third density, and the difference between the third density and the first density is less than or equal to 10% of the first density.

7. The display panel according to claim 6,

the reflective electrode in the first repeating unit has a first pattern; the virtual reflecting layer in the second repeating unit is provided with a second pattern;

the second graph comprises a first part and a second part, the first part is completely overlapped with at least part of the first graph, and the part of the second graph except the first part is the second part;

in the second pattern, the area occupied by the first portion is not less than 90% of the total area of the second pattern.

8. The display panel according to claim 6,

the virtual reflective layer further comprises a third repeating unit which is repeatedly arranged and is positioned between the first repeating unit and the second repeating unit, and the virtual reflective layer in the third repeating unit has a fourth density which is between the first density and the third density.

9. The display panel according to claim 8,

the reflective electrode in the first repeating unit has a first pattern; the virtual reflecting layer in the second repeating unit is provided with a second pattern; the virtual reflecting layer in the third repeating unit is provided with a third pattern;

the second graph comprises a third part and a fourth part, the third part is similar to at least part of the first graph, and the part of the second graph except the third part is the fourth part;

the third graph comprises a fifth part and a sixth part, the fifth part is similar to at least part of the first graph, and the part of the third graph except the fifth part is the sixth part;

in the second pattern, the area occupied by the third portion is not less than 90% of the total area of the second pattern; in the third pattern, an area occupied by the fifth portion is not less than 90% of a total area of the third pattern.

10. The display panel according to claim 7 or 9,

the first repeating unit comprises a plurality of mutually isolated reflecting electrodes, and in the second pattern, the adjacent second parts are mutually connected;

or in the second pattern, the adjacent fourth portions are connected to each other; and, in the third pattern, the adjacent sixth portions are connected to each other.

11. The display panel according to claim 1,

the display panel comprises a packaging cover plate and packaging glue, wherein the packaging cover plate is arranged on one side, away from the substrate, of the light-emitting pixels, the packaging glue is arranged between the packaging cover plate and the substrate, and the packaging glue is arranged in a non-display area and surrounds the display area; the touch electrode and the touch routing are arranged on one side of the packaging cover plate away from the substrate;

or the display panel comprises a flexible packaging layer arranged on one side of the light-emitting pixels, which is far away from the substrate, and the touch electrode and the touch wiring are arranged on one side of the flexible packaging layer, which is far away from the substrate;

the reflective electrode includes a first transparent layer, a second transparent layer, and a first reflective layer between the first and second transparent layers; the virtual reflective layer includes a third transparent layer, a fourth transparent layer, and a second reflective layer between the third and fourth transparent layers.

12. The display panel according to claim 1,

the display panel comprises a packaging cover plate and packaging glue, wherein the packaging cover plate is arranged on one side, away from the substrate, of the light-emitting pixels, the packaging glue is arranged between the packaging cover plate and the substrate, and the packaging glue is arranged in a non-display area and surrounds the display area;

the touch electrode is arranged on one side, close to the substrate, of the packaging cover plate, the touch wiring is located on one side, close to the packaging cover plate, of the substrate, the touch electrode is electrically connected with the touch wiring through a transmission bonding pad, and the virtual reflection layer and the reflection electrode are formed on the same layer.

13. A display device comprising the display panel according to any one of claims 1 to 12.