CN117500302A - Display module and display device - Google Patents

Abstract

The invention provides a display module, which is provided with a display area and a frame area, wherein the frame area is positioned at the peripheral edge of the display area and is connected with the display area; the frame area comprises an unbound side frame area and a bound side frame area, wherein the bound side frame area comprises a first area, a bending area and a second area which are sequentially distributed far from the display area and are sequentially connected; the display module includes: the pixel driving circuit, the light emitting unit and the packaging layer are positioned on the substrate and are sequentially distributed far away from the substrate; the pixel driving circuit and the light emitting unit are positioned in the display area; the color film layer is positioned on one side of the packaging layer, which is away from the substrate; the color film layer comprises a black matrix and color resistances of multiple colors, and orthographic projection of the color resistances on the substrate is overlapped with the light-emitting unit; orthographic projection of the black matrix on the substrate is not overlapped with the light-emitting unit; the black matrix extends from the display area to the frame area, and the orthographic projection of the black matrix on the substrate at least covers the non-binding side frame area, the first area and the opaque conductive pattern of the bending area. The display module can realize a narrow frame.

Description

Display module and display device

Technical Field

The invention belongs to the technical field of display, and particularly relates to a display module and a display device.

Background

OLED (Organic Light-Emitting Diode) display modules have been widely focused on, and as a new generation of display mode, they have been gradually replaced with conventional LCD (Liquid Crystal Display) display modules, and are widely used in mobile phone screens, computer monitors, full-color televisions, etc. because they have characteristics of self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc.

Disclosure of Invention

The invention provides a display module, which is provided with a display area and a frame area, wherein the frame area is positioned at the peripheral edge of the display area and is connected with the display area;

the border region includes an unbound side border region and a bound side border region,

the binding side frame area comprises a first area, a bending area and a second area which are sequentially distributed away from the display area and are sequentially connected;

the display module includes: the substrate is provided with a plurality of holes,

the pixel driving circuit, the light emitting unit and the packaging layer are positioned on the substrate and are sequentially distributed away from the substrate; the pixel driving circuit and the light emitting unit are positioned in the display area;

the color film layer is positioned on one side of the packaging layer, which is away from the substrate;

the color film layer comprises a black matrix and color resistances of multiple colors, and orthographic projection of the color resistances on the substrate is overlapped with the light-emitting unit; orthographic projection of the black matrix on the substrate is not overlapped with the light emitting unit;

the black matrix extends from the display area to the frame area, and orthographic projection of the black matrix on the substrate at least covers the non-binding side frame area, the first area and the lightproof conductive pattern of the bending area.

Optionally, an area ratio of the black matrix in the first region is equal to an area ratio of the black matrix in the display region with the same area;

and/or the area ratio of the black matrix in the bending area is equal to the area ratio of the black matrix in the display area with the same area;

and/or, the area ratio of the black matrix in the unbound side frame area is equal to the area ratio of the black matrix in the display area with the same area.

Optionally, the area ratio of the black matrix in the first area is larger than the area ratio of the black matrix in the display area with the same area;

and/or the area ratio of the black matrix in the bending area is larger than the area ratio of the black matrix in the display area with the same area;

and/or, the area ratio of the black matrix in the unbound side frame area is larger than the area ratio of the black matrix in the display area with the same area.

Optionally, an orthographic projection of the black matrix on the substrate covers the first region, the inflection region, and the unbound side frame region.

Optionally, the orthographic projection of the black matrix on the substrate also covers at least the opaque conductive pattern of the second region.

Optionally, the touch control layer is located on one side of the packaging layer far away from the substrate and on one side of the color film layer near the substrate;

orthographic projection of the touch control layer on the substrate is not overlapped with the light emitting unit;

the orthographic projection of the touch control layer on the substrate is overlapped with the black matrix.

Optionally, the pixel driving circuit includes an inorganic insulating layer and a plurality of conductive film layers, the inorganic insulating layer being located between the conductive film layers arbitrarily adjacent in a direction away from the substrate; orthographic projection of the inorganic insulating layer on the substrate is positioned in the display area, the first area, the second area and the unbound side frame area;

the display module further comprises an organic insulating layer, wherein the organic insulating layer is positioned between the pixel driving circuit and the light-emitting unit, and orthographic projection of the organic insulating layer on the substrate extends from the display area to the whole binding side frame area and the unbinding side frame area;

the display module further comprises a protective film which is positioned on one side of the black matrix, which is away from the substrate, and the front projection of the protective film on the substrate covers the bending area.

Optionally, an included angle of more than 0 degrees and less than 90 degrees is formed between the edge end face of the protective film, which is close to one side edge of the display area, and the plane where the substrate is located;

the orthographic projection of one edge of the edge end face, which is distributed along the arrangement direction of the display area and the binding side frame area, on the substrate coincides with the boundary line between the bending area and the first area, and the orthographic projection of the other edge on the substrate is positioned in the first area;

the width of the edge end face along the arrangement direction of the display area and the binding side frame area is 0.25mm.

Optionally, the bending area bends from the display side of the display module to the back side thereof;

the display module further comprises a transparent cover plate, the transparent cover plate is located on one side, away from the substrate, of the color film layer, and the transparent cover plate covers the display side of the display module.

The invention also provides a display device which comprises the display module.

The invention has the beneficial effects that: according to the display module provided by the invention, the black matrix extends from the display area to the frame area, and the orthographic projection of the black matrix on the substrate at least covers the non-binding side frame area, the first area and the opaque conductive patterns of the bending area, so that the transparent cover plate of the display module does not need to be provided with the ink shielding frame area any more, and the black matrix can replace the ink to cover and shield the non-binding side frame area, the first area and the opaque conductive patterns of the bending area, so that the non-binding side frame area and the binding side frame area are prevented from being lightened due to reflection of the opaque conductive patterns; meanwhile, the black matrix is used for replacing the ink, so that the shielding risk of the ink to the display area is avoided, and the reservation limit of the interval between the boundary of the side, close to the display area, of the window area of the ink and the boundary of the display area in the disclosed technology is eliminated; the risk that the ink cannot completely shield the metal wiring of the binding side frame area is avoided, so that the reservation limit on the distance between the boundary of the black matrix in the binding side frame area and the boundary of the window area of the ink, which is close to the display area, in the prior art is eliminated; and the width of the binding side frame area can be reduced by at least 0.2mm+0.18mm, compared with the prior art, the width of the binding side frame area of the display module is greatly reduced, and the narrow frame of the display module is facilitated to be realized.

According to the display device provided by the invention, the width of the binding side frame area of the display device is greatly reduced by adopting the display module, the narrow frame of the display device is facilitated to be realized, and the integral black effect of the display area and the frame area of the display device can be improved or realized.

Drawings

FIG. 1a is a schematic top view of an OLED display module according to the prior art;

FIG. 1b is a side view of a binding area of a lower frame of an OLED display module from a display side to a back side;

FIG. 2 is a schematic diagram showing the color difference from the lower frame of the OLED display module to the display area in FIG. 1b in the off-screen state;

FIG. 3 is a schematic top view of a structure of a display module according to an embodiment of the present invention when a binding side frame area is not bent to a back side of the binding side frame area;

FIG. 4 is a schematic side view of a structure of a display module according to an embodiment of the present invention when a binding side frame area is bent to a back side thereof;

FIG. 5a is a schematic diagram showing an integrated black effect of a frame area and a display area of a display module according to an embodiment of the present invention;

FIG. 5b is a schematic diagram illustrating another integrated black effect of the frame area and the display area of the display module according to the embodiment of the present invention;

FIG. 6 is a cross-sectional view of the structure taken along the AA' section line of FIG. 3;

fig. 7 is a structural cross-sectional view taken along the BB' section line in fig. 3.

Wherein the reference numerals are as follows:

1. a substrate; 2. a pixel driving circuit 21, an inorganic insulating layer; 22. a conductive film layer; 3. a light emitting unit; 31. an anode; 32. a light-emitting functional layer; 33. a cathode; 4. an encapsulation layer; 5. a color film layer; 50. a black matrix; 51. color resistance; 6. a transparent cover plate; 7. a touch layer; 71. a first electrode layer; 72. a second electrode layer; 721. a second driving electrode pattern; 722. sensing electrode patterns; 8. a first insulating layer; 9. an organic insulating layer; 10. a protective film; 11. a back film; 12. a heat dissipation layer; 100. a display area; 101. unbound side frame area; 102. binding the side frame area; 103. a first zone; 104. a bending region; 105. a second zone; 13. a glass cover plate; 14. and (3) printing ink.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, a display module and a display device of the present invention are described in further detail below with reference to the accompanying drawings and the detailed description.

In the disclosed technology, a polarizer is disposed on a display side of an OLED display module to reduce reflection, and the polarizer improves visibility by transmitting light only in a specific direction; however, as light passes through the polarizer, the brightness is reduced by more than half, and the luminous efficiency is reduced. In this case, more power consumption is required to increase the brightness. The increase in brightness results in a shortened lifetime of the OLED display module. In addition, in the foldable OLED display module, the thickness of the display module can be increased due to the arrangement of the polaroid, and folding of the flexible display module is not facilitated.

In order to improve the luminous efficiency of the OLED display module, reduce the power consumption and the thickness of the display module, a color filter is adopted to replace a polaroid. Currently, OLED display modules employing the COE (Color On Encapsulation) technology, i.e., disposing color filters on the encapsulation layer of the OLED display module, are favored.

In the disclosed technology, as shown in fig. 1a and 1b, in order to shield the metal wires in the frame area of the OLED display module, black ink 14 is generally coated on the frame of the glass cover 13 for shielding. The lower frame is a binding side frame area 102 of the display module, for example: the binding area of the display module is bent from the display side to the back side and is in binding connection with the peripheral circuit positioned on the back side of the display module, and the binding area of the display module is bent to the back side to form a binding side frame area 102 of the display module.

As shown in fig. 1b, the width of the binding side frame region 102 of the display module increases due to limitations of the coating process precision of the black ink 14, the attaching precision of the glass cover 13, and the like. For example: for a COE display module, the spacing a between the border of the windowed area of ink 14 near display area 100 and the border of display area 100 is 0.2mm. If the distance a is too small, the ink 14 risks shielding the display area 100 from displaying; if the distance a is too large, the width of the lower frame of the display module is increased. Meanwhile, in order to prevent the ink 14 from being unable to completely shield the metal traces of the binding side frame region 102, the black matrix 50 in the color filter extends to the binding side frame region 102, and the distance b between the boundary of the binding side frame region 102 and the boundary of the window region of the ink 14, which is close to the display region 100, needs to be greater than 0.18mm, in practical design, the boundary of the black matrix 50, which is located in the binding side frame region 102, is located between the bending start position P in the binding region and the display region 100. It can be seen that the presence of the ink 14 is very detrimental to narrowing the lower bezel of the display module due to the requirements of the arrangement of the ink 14 for the distance a and the distance b.

In addition, in the screen off state, three black areas with different hues exist from the lower frame area to the display area of the display module, as shown in fig. 1B and fig. 2, the area a is an ink coverage area, the area B (which is the area between the border of the window opening area of the ink 14, which is close to the display area 100, and the border of the display area 100) is a black matrix coverage area in the lower frame area, and the area C is a black matrix coverage area in the display area. The reason why the hue difference exists between the a region and the B region is that the hues of the ink 14 and the black matrix 50 are different, and the reason why the hue difference exists between the B region and the C region is that the pattern area ratio of the black matrix 50 is different between the display region 100 and the binding side frame region 102; the black matrix 50 in the display area 100 is generally a mesh structure, and the black matrix 50 in the binding side frame area 102 is generally entirely coated with no openings. The distinct hue difference of the display module from the lower border region to the display region 100 makes it impossible to achieve the effect of integral black.

In order to solve the above-mentioned problems in the prior art, an embodiment of the present invention provides a display module, as shown in fig. 3-4, 5a, 5b, and 6-7, which has a display area 100 and a frame area, wherein the frame area is located at a peripheral edge of the display area 100, and the frame area is connected with the display area 100; the frame area comprises an unbound side frame area 101 and a bound side frame area 102, and the bound side frame area 102 comprises a first area 103, a bending area 104 and a second area 105 which are distributed away from the display area 100 in sequence and are connected in sequence; the display module includes: a substrate 1, a pixel driving circuit 2, a light emitting unit 3 and a packaging layer 4, which are positioned on the substrate 1 and are sequentially distributed away from the substrate 1; the pixel driving circuit 2 and the light emitting unit 3 are located in the display area 100; the color film layer 5 is positioned on one side of the packaging layer 4 away from the substrate 1; the color film layer 5 comprises a black matrix 50 and color resistors 51 with multiple colors, and orthographic projection of the color resistors 51 on the substrate 1 is overlapped with the light-emitting unit 3; the orthographic projection of the black matrix 50 on the substrate 1 does not overlap with the light emitting unit 3; the black matrix 50 extends from the display area 100 to the frame area, and the front projection of the black matrix 50 on the substrate 1 covers at least the non-binding side frame area 101, the first area 103 and the opaque conductive pattern of the bending area 104.

The Light Emitting unit 3 may be an Organic electroluminescent element, that is, an OLED (Organic Light-Emitting Diode) element. The light emitting unit 3 includes an anode 31, a light emitting functional layer 32, and a cathode 33, which are sequentially stacked. The light emitting unit 3 may include organic electroluminescent elements emitting light of different colors, such as red, green, and blue light emitting elements; the light emitting unit 3 may also include an organic electroluminescent element that emits light of the same color, such as a light emitting element that emits white light. Accordingly, the color resistors 51 may include color resistors of different colors, such as red, green, and blue. The color film layer 5 is arranged on one side of the packaging layer 4, which is away from the substrate 1; not only can reduce the light reflection of display module assembly display side, but also can more vividly show the colour to make the display side of this display module assembly no longer need to set up the polaroid again and reduce the reflection, not only can improve the luminous efficacy of display module assembly, but also can reduce the consumption of display module assembly, simultaneously, because the thickness (about 50 ~ 100 mu m) of polaroid is greater than the thickness (about 5 mu m) of various rete 5 far away, so various rete 5 replace the polaroid can also reduce the thickness of display module assembly.

Optionally, as shown in fig. 4, the bending region 104 bends from the display side of the display module to the back side thereof; the display module further comprises a transparent cover plate 6, the transparent cover plate 6 is located on one side, away from the substrate 1, of the color film layer 5, and the transparent cover plate 6 covers the display side of the display module. Wherein, with the bending of the bending region 104, the second region 105 and at least part of the bending region 104 are located on the back side of the display module, thereby forming the binding side frame region 102 of the display module. The transparent cover plate 6 covers the entire display area 100, the unbound side frame area 101, and the bound side frame area 102 of the display side of the display module.

In this embodiment, by extending the black matrix 50 from the display area 100 to the frame area, and the orthographic projection of the black matrix 50 on the substrate 1 covers at least the non-binding side frame area 101, the first area 103 and the opaque conductive pattern of the bending area 104, the transparent cover plate 6 of the display module is not required to be provided with any ink shielding frame area, and the black matrix 50 can replace the ink to cover and shield the non-binding side frame area 101, the first area 103 and the opaque conductive pattern of the bending area 104, so as to prevent the non-binding side frame area 101 and the binding side frame area 102 from being shined due to the reflection of the opaque conductive pattern; meanwhile, the black matrix 50 is used for replacing the ink, so that the shielding risk of the ink to the display area is avoided, and the reservation limit of the interval a between the boundary of the side, close to the display area, of the window area of the ink and the boundary of the display area in the disclosed technology is eliminated; the risk that the ink cannot completely shield the metal wiring of the binding side frame area is avoided, so that the reservation limit of the distance b between the boundary of the black matrix located in the binding side frame area and the boundary of the window area of the ink, which is close to the display area, in the prior art is eliminated; and the width of the binding side frame area 102 can be reduced by at least 0.2mm+0.18mm, compared with the prior art, the width of the binding side frame area 102 of the display module is greatly reduced, and the narrow frame of the display module is facilitated to be realized.

Alternatively, the area ratio of the black matrix 50 in the first region 103 is equal to the area ratio of the black matrix 50 in the display region 100 of the same area; and/or the area ratio of the black matrix 50 in the bending region 104 is equal to the area ratio of the black matrix 50 in the display region 100 of the same area; and/or the area ratio of the black matrix 50 in the unbound side frame region 101 is equal to the area ratio of the black matrix 50 in the display region 100 of the same area. Thus, the color phases of the first region 103, the bending region 104 and the unbound side frame region 101 are the same as those of the display region 100, so that an integral black effect of the bound side frame region 102, the unbound side frame region 101 and the display region 100 is realized, as shown in fig. 5 a.

It should be noted that, when the area ratio of the black matrix 50 in the first region 103, the area ratio of the black matrix 50 in the inflection region 104, and the area ratio of the black matrix 50 in the unbound side frame region 101 are smaller than the area ratio of the black matrix 50 in the display region 100 with the same area, the film forming areas of the black matrix 50 in the first region 103, the inflection region 104, and the unbound side frame region 101 may be adjusted to be the same as the area ratio of the black matrix 50 in the display region 100 with the same area, so as to achieve the integral black effect of the bound side frame region 102, the unbound side frame region 101, and the display region 100.

Alternatively, the area ratio of the black matrix 50 in the first region 103 is larger than the area ratio of the black matrix 50 in the display region 100 of the same area; and/or the area ratio of the black matrix 50 in the bending region 104 is larger than the area ratio of the black matrix 50 in the display region 100 of the same area; and/or the area ratio of the black matrix 50 in the unbound side frame region 101 is larger than the area ratio of the black matrix 50 in the display region 100 of the same area. Compared with the case that three black areas with different hues exist from the lower frame area to the display area of the display module in the disclosed technology, the setting of replacing ink by the black matrix 50 in this embodiment can reduce or improve the hue difference between the binding side frame area 102 and the unbound side frame area 101 and the display area 100, thereby improving the integral black effect of the binding side frame area 102, the unbound side frame area 101 and the display area 100, as shown in fig. 5 b.

Optionally, the orthographic projection of the black matrix on the substrate covers the first region, the inflection region, and the unbound side frame region (not shown). By the arrangement, the unbound side frame area and the bound side frame area can be further prevented from shining due to reflection of light.

Optionally, the orthographic projection of the black matrix on the substrate also covers at least the opaque conductive pattern (not shown in the figure) of the second region. Therefore, shielding of the black matrix on the opaque conductive patterns in the binding side frame area can be further ensured, and the binding side frame area is further prevented from being shiny due to reflection of the opaque conductive patterns.

Optionally, as shown in fig. 6 and fig. 7, the display module further includes a touch layer 7, which is located on a side of the encapsulation layer 4 away from the substrate 1 and on a side of the color film layer 5 near the substrate 1; orthographic projection of the touch control layer 7 on the substrate 1 is not overlapped with the light emitting unit 3; the front projection of the touch layer 7 on the substrate 1 overlaps the black matrix 50.

In this embodiment, the touch Layer 7 adopts an FMLOC (Flexible Multi-Layer On Cell) structure, i.e. the touch Layer 7 is directly prepared between the encapsulation Layer 4 and the color film Layer 5. Alternatively, the touch layer 7 includes a first electrode layer 71 and a second electrode layer 72; the first electrode layer 71 and the second electrode layer 72 are sequentially arranged far away from the substrate 1, and a first insulating layer 8 is further arranged between the first electrode layer 71 and the second electrode layer 72; the first electrode layer 71 includes a first driving electrode pattern; the second electrode layer 72 includes a second driving electrode pattern 721 and a sensing electrode pattern 722; orthographic projections of the second driving electrode patterns 721 and the sensing electrode patterns 722 on the substrate 1 do not overlap each other; orthographic projections of the first driving electrode pattern and the sensing electrode pattern 722 on the substrate 1 are partially overlapped; the second driving electrode pattern 721 is connected to the first driving electrode pattern through a via hole opened in the first insulating layer 8. That is, the touch layer 7 in this embodiment adopts the mutual capacitance touch principle, and the touch layer 7 may include driving electrode patterns and sensing electrode patterns arranged vertically and horizontally in a crossed manner, where the driving electrode patterns are bridged and connected with the second driving electrode patterns 721 in the second electrode layer 72 through the first driving electrode patterns in the first electrode layer 71. Of course, the arrangement of the touch layer 7 is not limited to the mutual capacitance structure arrangement in the present embodiment, and the touch layer 7 of the single-layer self-capacitance principle is also applicable. And will not be described in detail here.

Alternatively, the touch layer 7 is typically made of a Ti/Al/Ti laminate material, and the touch layer 7 of the material has a high light reflectivity. Under the irradiation of external environment light, the touch control layer 7 can reflect the environment light, so that a shadow pattern appears to a certain extent, and the overall appearance of the display module is affected. Through setting up color film layer 5 in the one side of touch layer 7 that deviates from substrate 1, and touch layer 7 orthographic projection and black matrix 50 overlap on substrate 1, black matrix 50 can absorb and reflect touch layer 7 reflection's ambient light to prevent touch layer 7 to the reflection of ambient light from causing the influence to display module group's demonstration.

Alternatively, the pixel driving circuit 2 includes an inorganic insulating layer 21 and a plurality of conductive film layers 22, the inorganic insulating layer 21 being located between any adjacent conductive film layers 22 in a direction away from the substrate 1; the orthographic projection of the inorganic insulating layer 21 on the substrate 1 is located in the display region 100, the first region 103, the second region 105 and the unbound side frame region 101; the display module further comprises an organic insulating layer 9, which is positioned between the pixel driving circuit 2 and the light emitting unit 3, wherein the orthographic projection of the organic insulating layer 9 on the substrate 1 extends from the display area 100 to the whole binding side frame area 102 and the unbinding side frame area 101; the display module further comprises a protective film 10, which is positioned on one side of the black matrix 50 away from the substrate 1, and the front projection of the protective film 10 on the substrate 1 covers the bending region 104.

Alternatively, the inorganic insulating layer 21 is made of silicon nitride, silicon oxide, or silicon oxynitride material. A plurality of conductive film layers 22 such as gate, active layer, source and drain of transistors in the pixel driving circuit 2. Alternatively, the orthographic projection of the conductive film layer 22 in the pixel driving circuit 2 on the substrate 1 does not overlap with the light emitting unit 3 and overlaps with the black matrix 50. The inorganic insulating layer 21 is prepared by patterning process (including film forming, exposing, developing, etching, etc.), the inorganic insulating layer 21 in the bending region 104 is removed in the preparation process, and the bending property of the inorganic insulating layer 21 is poor, so that good bending property of the bending region 104 can be ensured. Alternatively, the organic insulating layer 9 includes a flat layer and a pixel defining layer, the flat layer being disposed so that the light emitting unit 3 is formed on a flat surface of the flat layer; the pixel defining layer is used to define the position of the light emitting unit 3. The pixel defining layer is provided with an opening, and the light emitting unit 3 is located in the opening. Optionally, the protective film 10 is made of an ultraviolet curable adhesive material (such as MCL adhesive), so that the protective film 10 can protect the film surface of the bending region 104, and can adjust the stress neutral layer position of the bending region 104, so as to ensure that the metal wires in the bending region 104 cannot be broken due to bending stress.

Alternatively, as shown in fig. 4, an edge end face of the protective film 10 near one side edge of the display area 100 forms an included angle θ of more than 0 ° and less than 90 ° with a plane in which the substrate 1 is located; the orthographic projection of one side x1 of the edge end surface, which is distributed along the arrangement direction of the display area 100 and the binding side frame area 102, on the substrate 2 coincides with the boundary line between the bending area 104 and the first area 103, and the orthographic projection of the other side x2 on the substrate 1 is positioned in the first area 103; the width s of the edge face along the arrangement direction of the display area 100 and the binding side frame area 102 is 0.25mm.

The following table 1 shows the bonding precision requirements of the black matrix and the protective film in the binding side frame area of the display module when the ink is present in the disclosure technology and when the ink is not present in the embodiment:

TABLE 1

As can be seen from table 1, in comparison with the scheme in which the ink exists in the disclosure technology, in this embodiment, the black matrix 50 replaces the ink, so that the reservation limitation of the interval a between the boundary of the window area of the ink, which is close to the display area, and the boundary of the display area in the disclosure technology is eliminated; the reservation limit of the distance b between the boundary of the binding side frame region of the black matrix and the boundary of one side of the window region of the ink, which is close to the display region, in the prior art is eliminated; however, in this embodiment, the lamination accuracy of the protective film 10 is required in the artIn the same way, the requirement of the attaching precision of the protective film 10 still exists, that is, the space s between one side x1 and the other side x2 of the edge end surface distributed along the arrangement direction of the display area 100 and the binding side frame area 102 still exists. In this embodiment, the display module can be precisely assembled as long as the attaching precision of the protective film 10 meets the requirement. In the disclosed technology, a calculation formula of a distance b between a boundary of a binding side frame region and a boundary of a side of a window region of ink, which is close to a display region, is as follows:wherein, the printing precision of the ink is +/-100 mu m; the attaching precision of the glass cover plate is +/-150 mu m; the coating accuracy of the protective film 10 is ±100 μm; i.e. the distance b in the disclosed technique is limited by these three accuracies. By adopting the scheme of replacing the ink with the black matrix in the embodiment, the requirement on the accuracy of the distance b is eliminated, so that the width of the binding side frame region 102 of the display module can be reduced by the distance b, namely 206.15 mu m.

Optionally, in this embodiment, the display module further includes a back film 11, located on a side of the substrate 1 facing away from the pixel driving circuit 2; the front projection of the back film 11 onto the substrate 1 covers all areas except the bending region 104, and the back film 11 protects the substrate 1. The display module further comprises a heat dissipation layer 12, which is located on one side of the back film 11 away from the substrate 1, wherein the front projection of the heat dissipation layer 12 on the substrate 1 covers the display area 100 and a part of the first area 103, and the heat dissipation layer 12 is used for dissipating heat of the display module.

According to the display module provided in this embodiment, the black matrix 50 extends from the display area 100 to the frame area, and the orthographic projection of the black matrix 50 on the substrate 1 covers at least the non-binding side frame area 101, the first area 103 and the opaque conductive pattern of the bending area 104, so that the transparent cover plate 6 of the display module does not need to be provided with any ink for shielding the frame area, and the black matrix 50 can replace the ink to cover and shield the non-binding side frame area 101, the first area 103 and the opaque conductive pattern of the bending area 104, so that the non-binding side frame area 101 and the binding side frame area 102 are prevented from shining due to reflection of the opaque conductive pattern; meanwhile, the black matrix 50 is used for replacing the ink, so that the shielding risk of the ink to the display area is avoided, and the reservation limit of the interval a between the boundary of the side, close to the display area, of the window area of the ink and the boundary of the display area in the disclosed technology is eliminated; the risk that the ink cannot completely shield the metal wiring of the binding side frame area is avoided, so that the reservation limit of the distance b between the boundary of the black matrix located in the binding side frame area and the boundary of the window area of the ink, which is close to the display area, in the prior art is eliminated; and the width of the binding side frame area 102 can be reduced by at least 0.2mm+0.18mm, compared with the prior art, the width of the binding side frame area 102 of the display module is greatly reduced, and the narrow frame of the display module is facilitated to be realized.

The invention also provides a display device comprising the display module in the embodiment.

Through adopting the display module assembly in the above-mentioned embodiment, reduced display device's the width of binding side frame district greatly, be favorable to realizing display device's narrow frame, can improve or realize the integrative black effect in display device display area and frame district moreover.

The display device provided by the invention can be any product or component with a display function, such as an OLED panel, an OLED television, an OLED billboard, a display, a mobile phone, a navigator and the like.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.

Claims (10)

1. The display module is provided with a display area and a frame area, wherein the frame area is positioned at the peripheral edge of the display area and is connected with the display area;

the border region includes an unbound side border region and a bound side border region,

the binding side frame area comprises a first area, a bending area and a second area which are sequentially distributed away from the display area and are sequentially connected;

the display module includes: the substrate is provided with a plurality of holes,

the pixel driving circuit, the light emitting unit and the packaging layer are positioned on the substrate and are sequentially distributed away from the substrate; the pixel driving circuit and the light emitting unit are positioned in the display area;

the color film layer is positioned on one side of the packaging layer, which is away from the substrate;

the color film layer comprises a black matrix and color resistances of multiple colors, and orthographic projection of the color resistances on the substrate is overlapped with the light-emitting unit; orthographic projection of the black matrix on the substrate is not overlapped with the light emitting unit; it is characterized in that the method comprises the steps of,

the black matrix extends from the display area to the frame area, and orthographic projection of the black matrix on the substrate at least covers the non-binding side frame area, the first area and the lightproof conductive pattern of the bending area.

2. The display module of claim 1, wherein an area ratio of the black matrix in the first region is equal to an area ratio of the black matrix in the display region of the same area;

and/or the area ratio of the black matrix in the bending area is equal to the area ratio of the black matrix in the display area with the same area;

and/or, the area ratio of the black matrix in the unbound side frame area is equal to the area ratio of the black matrix in the display area with the same area.

3. The display module of claim 2, wherein an area ratio of the black matrix in the first region is greater than an area ratio of the black matrix in the display region of the same area;

and/or the area ratio of the black matrix in the bending area is larger than the area ratio of the black matrix in the display area with the same area;

and/or, the area ratio of the black matrix in the unbound side frame area is larger than the area ratio of the black matrix in the display area with the same area.

4. The display module of claim 1, wherein an orthographic projection of the black matrix on the substrate covers the first region, the inflection region, and the unbound side frame region.

5. The display module of claim 1, wherein the orthographic projection of the black matrix on the substrate further covers at least the opaque conductive pattern of the second region.

6. The display module of claim 1, further comprising a touch layer located on a side of the encapsulation layer away from the substrate and on a side of the color film layer near the substrate;

orthographic projection of the touch control layer on the substrate is not overlapped with the light emitting unit;

the orthographic projection of the touch control layer on the substrate is overlapped with the black matrix.

7. The display module according to claim 1, wherein the pixel driving circuit includes an inorganic insulating layer and a plurality of conductive film layers, the inorganic insulating layer being located between the conductive film layers arbitrarily adjacent in a direction away from the substrate; orthographic projection of the inorganic insulating layer on the substrate is positioned in the display area, the first area, the second area and the unbound side frame area;

the display module further comprises an organic insulating layer, wherein the organic insulating layer is positioned between the pixel driving circuit and the light-emitting unit, and orthographic projection of the organic insulating layer on the substrate extends from the display area to the whole binding side frame area and the unbinding side frame area;

the display module further comprises a protective film which is positioned on one side of the black matrix, which is away from the substrate, and the front projection of the protective film on the substrate covers the bending area.

8. The display module according to claim 7, wherein an included angle of more than 0 ° and less than 90 ° is formed between an edge end face of the protective film near one side edge of the display area and a plane in which the substrate is located;

the orthographic projection of one edge of the edge end face, which is distributed along the arrangement direction of the display area and the binding side frame area, on the substrate coincides with the boundary line between the bending area and the first area, and the orthographic projection of the other edge on the substrate is positioned in the first area;

the width of the edge end face along the arrangement direction of the display area and the binding side frame area is 0.25mm.

9. The display module of any one of claims 1-8, wherein the bending region bends from a display side of the display module to a back side thereof;

the display module further comprises a transparent cover plate, the transparent cover plate is located on one side, away from the substrate, of the color film layer, and the transparent cover plate covers the display side of the display module.

10. A display device comprising a display module according to any one of claims 1-9.