Display panel and display equipment

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, and an OLED light-emitting layer, a reflecting layer, a shading layer and a color resistance layer which are sequentially laminated on the substrate, the reflecting layer is provided with a first opening, and the orthographic projection of the first opening on the substrate is overlapped with the orthographic projection of the light-emitting area of the OLED light-emitting layer on the substrate; the shading layer is provided with a second opening, and the orthographic projection of the first opening on the substrate is located in the orthographic projection of the second opening on the substrate; the display panel comprises a first area and a second area, the size of the second opening corresponding to the pixels of the same color in the first area is smaller than the size of the second opening in the second area, the shading layer is provided with a third opening in the first area, and the third opening and the second opening are mutually independent. Therefore, the third opening is formed in the shading layer of the first area, so that the reflectivity of the first area is increased, the reflectivity difference between the first area and the second area is reduced, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] In a display panel, a high-refractive color resist layer, a low-refractive reflective layer and a light-shielding layer are usually used to make a color film of the display panel, thereby utilizing the total reflection effect between the color resist layer and the reflective layer to improve the light output efficiency of the display panel at a forward viewing angle.

[0003] However, when the shading layer is opened, the edge of the shading layer may fall off in some areas, which will cause the shading layer opening in this area to become larger, thereby increasing the reflectivity of the display panel in this area, and alternating light and dark stripes will appear on the display panel, reducing the display effect of the display panel.

[0004] Therefore, how to improve the display effect of the display panel has become a technical problem to be solved urgently in this field. Summary of the invention

[0005] Embodiments of the present invention provide a display panel and a display device, which are used to improve the display effect of the display panel.

[0006] In a first aspect, an embodiment of the present invention provides a display panel, comprising: a substrate, on which an OLED light-emitting layer, a reflective layer, a light-shielding layer, and a color-resisting layer are sequentially stacked;

[0007] The reflective layer has a first opening, and an orthographic projection of the first opening on the substrate overlaps with an orthographic projection of a light emitting area of ​​the OLED light emitting layer on the substrate;

[0008] The light shielding layer has a second opening, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the second opening on the substrate, the second opening is arranged corresponding to the pixels in the light-emitting area, the color resist layer fills the first opening and the second opening, the reflective layer has a side wall at the first opening, the color resist layer contacts the side wall, and the refractive index of the color resist layer is greater than the refractive index of the reflective layer;

[0009] The display panel includes a first area and a second area, the size of the second opening corresponding to the pixels of the same color in the first area is smaller than the size in the second area, the shading layer has a third opening in the first area, the orthographic projection of the third opening on the substrate does not overlap with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer on the substrate, and the third opening is independent of the second opening.

[0010] In a second aspect, an embodiment of the present invention provides a display device, including the display panel as described in the first aspect above.

[0011] The beneficial effects of the present invention are as follows:

[0012] A display panel and a display device provided by an embodiment of the present invention include: a substrate, an OLED light-emitting layer, a reflective layer, a light-shielding layer and a color-resistance layer stacked in sequence on the substrate; the reflective layer has a first opening, and the orthographic projection of the first opening on the substrate overlaps with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer on the substrate; the light-shielding layer has a second opening, and the orthographic projection of the first opening on the substrate is located within the orthographic projection of the second opening on the substrate, and the second opening is arranged corresponding to the pixels in the light-emitting area, the color-resistance layer fills the first opening and the second opening, the reflective layer has a sidewall at the first opening, the color-resistance layer contacts the sidewall, and the refractive index of the color-resistance layer is greater than the refractive index of the reflective layer; the display panel includes a first area and a second area, the size of the second opening corresponding to the pixel of the same color in the first area is smaller than the size in the second area, the light-shielding layer has a third opening in the first area, the orthographic projection of the third opening on the substrate does not overlap with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer on the substrate, and the third opening is independent of the second opening. In this way, by setting the third opening on the light-shielding layer in the first area, the reflectivity of the first area is increased, thereby reducing the difference in reflectivity between the first area and the second area, and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional view of a display panel provided in an embodiment of the present invention;

[0014] Figure 2 A schematic diagram of a first third opening morphology provided in an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of a second third opening morphology provided in an embodiment of the present invention;

[0016] Figure 4 A schematic diagram of a third opening morphology provided in an embodiment of the present invention;

[0017] Figure 5 A schematic diagram of a fourth third opening morphology provided in an embodiment of the present invention;

[0018] Figure 6 A schematic diagram of a fifth third opening morphology provided in an embodiment of the present invention;

[0019] Figure 7 A schematic diagram of a sixth third opening morphology provided in an embodiment of the present invention;

[0020] Figure 8A schematic diagram of a seventh third opening morphology provided in an embodiment of the present invention;

[0021] Fig. 9 A schematic diagram of an eighth third opening morphology provided in an embodiment of the present invention;

[0022] Fig.10 A schematic diagram of a ninth third opening morphology provided in an embodiment of the present invention;

[0023] Fig.11 is a schematic diagram of a tenth third opening morphology provided in an embodiment of the present invention;

[0024] Fig.12 is a schematic diagram of an eleventh third opening morphology provided in an embodiment of the present invention;

[0025] Fig.13 A schematic diagram of a twelfth third opening morphology provided in an embodiment of the present invention;

[0026] Fig.14 is a schematic diagram of a thirteenth third opening morphology provided in an embodiment of the present invention;

[0027] Fig.15 It is a schematic diagram of the fourteenth third opening morphology provided in an embodiment of the present invention;

[0028] Fig.16 A schematic diagram of a display device structure provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to describe in detail the specific implementation of a display panel and a display device provided by an embodiment of the present invention. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] An embodiment of the present invention provides a display panel, such as Figure 1 As shown, it includes: a substrate 100, an OLED light-emitting layer 200, a reflective layer 300, a light-shielding layer 400 and a color-resisting layer 500 which are sequentially stacked on the substrate 100;

[0031] The reflective layer 300 has a first opening K1, and the orthographic projection of the first opening K1 on the substrate 100 overlaps with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer 200 on the substrate 100;

[0032] The light shielding layer 400 has a second opening K2, the orthographic projection of the first opening K1 on the substrate 100 is located within the orthographic projection of the second opening K2 on the substrate 100, the second opening K2 is arranged corresponding to the pixel 201 in the light-emitting area, the color resist layer 500 is filled in the first opening K1 and the second opening K2, the reflective layer 300 has a side wall A at the first opening K1, the color resist layer 500 is in contact with the side wall A, and the refractive index of the color resist layer 500 is greater than the refractive index of the reflective layer 300; wherein the material of the reflective layer 300 may be, but not limited to, an organic insulating material such as polyimide, and the material of the color resist layer 500 may be, but not limited to, a photosensitive organic substance;

[0033] The display panel includes a first area Q1 and a second area Q2. The size of the second opening K2 corresponding to the pixel 201 of the same color in the first area Q1 is smaller than that in the second area Q2. The light-shielding layer 400 has a third opening K3 in the first area Q1. The orthographic projection of the third opening K3 on the substrate 100 does not overlap with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer 200 on the substrate 100. The third opening K3 and the second opening K2 are independent of each other.

[0034] In this way, by setting the third opening on the light shielding layer in the first area, the reflectivity of the first area is increased, thereby reducing the difference in reflectivity between the first area and the second area, and improving the display effect of the display panel. In addition, the orthographic projection of the third opening on the substrate does not overlap with the orthographic projection of the light emitting area of ​​the OLED light emitting layer on the substrate, which can reduce light leakage at the third opening and improve the display effect of the display panel.

[0035] Among them, Figure 1 As shown, the OLED light-emitting layer 200 includes a plurality of pixels 201, and the pixels 201 are located in the light-emitting area of ​​the OLED light-emitting layer 200. When the second opening K2 is arranged corresponding to the pixels 201 in the light-emitting area, the light emitted by the pixels 201 can be emitted from the second opening K2 to realize display of the display panel.

[0036] The size of the second opening K2 corresponding to the pixel 201 of the same color in the first area Q1 is smaller than that in the second area Q2, which can be understood as follows: Figure 1 As shown, the pixel 201 may include a red pixel R, a green pixel G, and a blue pixel B. In a pixel arrangement, the blue pixel G is relatively large, while the red pixel R and the green pixel G are relatively small ( Figure 1(not shown), so that the second opening K2 corresponding to the blue pixel B is also larger than that of the red pixel R and the green pixel G. Therefore, when comparing the sizes of the second opening K2 in the first area Q1 and the second area Q2, it is necessary to compare the second openings K2 corresponding to the pixels 201 of the same color. Therefore, among the multiple second openings K2 corresponding to the red pixel R, the second opening K2 in the first area Q1 is smaller, and among the multiple second openings K2 corresponding to the green pixel G, the second opening K2 in the first area Q1 is smaller, and among the multiple second openings K2 corresponding to the blue pixel G, the second opening K2 in the first area Q1 is smaller.

[0037] In addition, the size of the second opening can be determined by the orthographic projection of the second opening on the substrate. For example, when the orthographic projection of the second opening on the substrate is a circle, the size of the second opening can be the diameter of the circle. When the orthographic projection of the second opening on the substrate is a square, the size of the second opening can be the side length of the square. Of course, the orthographic projection shape of the second opening on the substrate is generally determined by the shape of the pixel. The orthographic projection shape of the second opening on the substrate can be set according to actual needs to determine its size, and is not specifically limited here.

[0038] It should be understood that for display panels of the same size manufactured using the same process, the area where the edge of the light shielding layer falls off is fixed, so that the positions of the first area and the second area can be determined, and the display effect of the display panel can be improved by setting the third opening in the first area.

[0039] Alternatively, if Figures 2 to 14 As shown, Figures 2 to 14 Schematic diagram of the orthographic projection of the second opening K2 in the OLED light-emitting layer and the third opening K3 with different structures on the substrate 100, wherein the third openings K3 are evenly arranged in an array. In this way, evenly arranging the third openings K3 in the first region Q1 can improve the uniformity of the reflectivity in the first region Q1, thereby improving the display effect of the display panel.

[0040] In the display panel, the third opening in the first region may be configured to have a variety of different structures. The third openings with several different structures are introduced below.

[0041] 1. A third opening surrounding the second opening.

[0042] like Figures 2 to 11 As shown, a third opening K3 is arranged around at least one second opening K2. For example, a third opening K3 may be arranged around 1, 2, 3, 4 or more second openings, and the specific number of second openings K2 surrounded by a third opening K3 is not specifically limited here, thereby adjusting the reflectivity of the first region Q1 and improving the display effect of the display panel.

[0043] Alternatively, if Figures 2 to 5 As shown, the third opening K3 is in an "S" shape, and the third opening K3 is arranged around two adjacent second openings K2.

[0044] Among them, Figure 2 and Figure 5 As shown, the third openings K3 are arranged in a row from the lower left to the upper right, each third opening K3 half-surrounds a second opening K2 corresponding to a red pixel R and a second opening K2 corresponding to a green pixel G, and the two second openings K2 are respectively located on both sides of the third opening K3. Figure 2 and Figure 5 The "S" shape of the third opening K3 is a mirror image; Figure 3 and Figure 4 As shown, the third openings K3 are arranged from the upper left to the lower right, each of the third openings K3 half surrounds a second opening K2 corresponding to a red pixel R and a second opening K2 corresponding to a green pixel G, and the two second openings K2 are respectively located on both sides of the third opening K3. Figure 3 and Figure 4 The "S" shape of the third opening K3 is a mirror image.

[0045] In this way, the reflectivity of the first region can be adjusted by setting the “S”-shaped third opening, thereby improving the display effect of the display panel.

[0046] Of course, the "S"-shaped third opening is not limited to semi-surrounding the second openings corresponding to a red pixel and a green pixel, and other forms of "S"-shaped third openings may also be used. For example, the "S"-shaped third opening semi-surrounds the second openings corresponding to a blue pixel and a green pixel, or the "S"-shaped third opening may be expanded into a wavy third opening, thereby semi-surrounding more second openings, and the second openings are alternately arranged on both sides of the third opening. The setting form of the "S"-shaped third opening is not specifically limited here.

[0047] Alternatively, if Figures 6 to 11 As shown, the third opening K3 is "U" shaped and is arranged around two adjacent second openings K2. In this way, the reflectivity of the first region Q1 can be adjusted by setting the "U" shaped third opening K3, thereby improving the display effect of the display panel.

[0048] Furthermore, if Figure 8 and Fig.11 As shown, the "U"-shaped openings of the third openings K3 in adjacent columns face opposite directions. In this way, by setting the "U"-shaped openings of the third openings K3 to face opposite directions, the uniformity of the light shielding layer opening is improved, thereby improving the uniformity of the reflectivity in the first region Q1 and improving the display effect of the display panel.

[0049] Specifically, Figures 6 to 8 As shown, the third openings K3 are arranged in a row from the lower left to the upper right, each of the third openings K3 half-surrounds a second opening K2 corresponding to a blue pixel B and a second opening K2 corresponding to a green pixel G, and the two second openings K2 are located on the same side of the third opening K3. Figure 6 The "U"-shaped opening of the third opening K3 is located at the lower left. Figure 7 The "U"-shaped opening of the third opening K3 is located at the upper right. Figure 8 The "U"-shaped openings of the third openings K3 in the adjacent rows are located at the lower left and upper right, respectively, that is, the "U"-shaped openings face in opposite directions; Figures 9 to 11 As shown, the third openings K3 are arranged in a row from the upper left to the lower right, each third opening K3 half-surrounds a second opening K2 corresponding to a blue pixel B and a second opening K2 corresponding to a green pixel G, and the two second openings K2 are located on the same side of the third opening K3. Fig. 9 The "U"-shaped opening of the third opening K3 is located at the upper left. Fig.10 The "U"-shaped opening of the third opening K3 is located at the lower right. Figure 8 The "U"-shaped openings of the third openings K3 in the adjacent rows are respectively located at the upper left and the lower right, that is, the "U"-shaped openings are facing opposite directions.

[0050] Of course, the "U"-shaped third opening is not limited to semi-surrounding the second opening corresponding to a blue pixel and a green pixel, and other forms of "U"-shaped third openings may also be used. For example, the "U"-shaped third opening semi-surrounds the second opening corresponding to a red pixel and a green pixel, or the "U"-shaped third opening may semi-surround one or more second openings. The setting form of the "U"-shaped third opening is not specifically limited here.

[0051] Alternatively, if Fig.12 and Fig.13 As shown, the third opening is in a ring shape, and the third opening is arranged around two adjacent second openings.

[0052] Among them, Fig.12 As shown, the third openings K3 are arranged in a row from the lower left to the upper right, and each third opening K3 surrounds a second opening K2 corresponding to a red pixel R and a second opening K2 corresponding to a green pixel G; Fig.13 As shown, the third openings K3 are arranged in a row from the upper left to the lower right, and each third opening K3 half surrounds a second opening K2 corresponding to a red pixel R and a second opening K2 corresponding to a green pixel G.

[0053] In this way, the reflectivity of the first area can be adjusted by providing the third opening surrounding the second opening, thereby improving the display effect of the display panel.

[0054] Of course, the third opening surrounding the second opening is not limited to surrounding the second opening corresponding to a red pixel and a green pixel, and other forms of third openings may also be used. For example, a third opening surrounds a second opening corresponding to a blue pixel and a green pixel, or a third opening may surround one or more second openings. The setting form of the third opening surrounding the second opening is not specifically limited here.

[0055] It should be understood that when the third opening is arranged around the second opening, the specific shape of the third opening is not limited to the types introduced in the above content, and can also be other shapes that can surround the second opening, which is not specifically limited here.

[0056] 2. A third opening located between the second openings.

[0057] like Fig.14 and Fig.15 As shown, the third opening K3 is located between adjacent second openings K2. Thus, by providing the third opening K3, the reflectivity of the first region Q1 can be adjusted, thereby improving the display effect of the display panel.

[0058] Alternatively, if Fig.14 As shown, the third opening K3 is in an "X" shape, or, as shown in FIG. Fig.15 As shown, the third opening K3 is annular. In this way, third openings of various shapes can be arranged between the second openings, which improves the flexibility of the display panel design while improving the display effect of the display panel.

[0059] Of course, the shape of the third opening provided between the second openings is not limited to the "X" shape and the ring shape, and may also be other shapes, which are not specifically limited here.

[0060] It should be understood that Figures 2 to 15 In the embodiment, the arrangement of pixels in the reflective layer is Diamond pixel arrangement, and the pixel shapes are all circular. When the display panel adopts other pixel arrangements, such as but not limited to GGRB pixel arrangement, RealRGB pixel arrangement, etc., or adopts other pixel shapes, such as but not limited to square pixels, diamond pixels, etc., the third opening can be made in the manner described in the above content to adjust the reflectivity of the first area, thereby improving the display effect of the display panel.

[0061] In addition, the spacing between the second opening and the third opening, the minimum width of the third opening, and the spacing between adjacent third openings can all be set to be greater than or equal to 3μm, so that when etching to form the third opening, the morphology of the third opening can be accurately controlled to improve the reliability of the display panel.

[0062] Of course, in addition to the two methods introduced in the above content, namely, the third opening surrounds the second opening and the third opening is located between the second openings, the third opening can also be arranged in other ways. For example, when the second opening is annular, the second opening can surround the third opening. The specific arrangement of the third opening can be selected according to actual needs and is not limited here.

[0063] Alternatively, if Figure 1 As shown, the angle between the side wall A and the first direction is greater than 0°, the side wall A faces the direction away from the substrate 100, and the first direction is the direction perpendicular to the substrate 100. In this way, the angle between the side wall A and the first direction is greater than 0°, and the refractive index of the color resist layer 500 is greater than the refractive index of the reflective layer 300, which increases the proportion of the light emitted by the OLED light-emitting layer 200 that is totally reflected on the side wall A, thereby improving the front light efficiency of the display panel and improving the display effect of the display panel.

[0064] Alternatively, if Figure 1 As shown, the OLED light-emitting layer also includes: a first electrode 202 and a second electrode 203 located on both sides of the pixel 201, wherein the pixel 201 is an organic electroluminescent device, which can emit light under the action of the electrical signal applied by the first electrode 202 and the second electrode 203. The above-mentioned first electrode 202 can be an anode, and the second electrode 203 can be a cathode; or, the first electrode 202 can be a cathode, and the second electrode 203 can be an anode, which is not limited here. Since the second electrode 203 is located on the light-emitting surface of the light-emitting layer 200, the second electrode 203 can be made of a transparent conductive material such as indium tin oxide, or the first electrode 202 can also include a metal reflective layer, and the second electrode 203 is a semi-transparent metal film layer, which can be made of materials such as magnesium, silver or magnesium-silver alloy. In addition, the electroluminescent device can include an organic light-emitting layer and an organic functional layer, wherein the organic functional layer can include film layers such as a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer.

[0065] Alternatively, if Figure 1 As shown, the display panel includes: an encapsulation layer 600 sandwiched between the OLED light-emitting layer 200 and the reflective layer 300. The encapsulation layer 600 can be made of inorganic film layers and organic film layers well known to those skilled in the art, and is not limited here. In this way, the encapsulation layer 600 can encapsulate each OLED light-emitting layer to prevent water vapor and oxygen from invading the interior of the display panel, thereby preventing water vapor and oxygen from damaging the OLED light-emitting layer 200.

[0066] Optionally, the display panel includes: a touch layer sandwiched between the encapsulation layer and the reflective layer. The touch layer may include a plurality of independent self-capacitance electrodes, and the touch position is detected using the self-capacitance principle, or the touch layer may include a plurality of first capacitor electrodes and a plurality of second capacitor electrodes, and the touch position is detected using the mutual capacitance principle. The specific detection method is not specifically limited here. The touch layer may be made of a transparent conductive material, or the touch layer may be set to a metal grid structure to achieve light transmission. In addition, if the touch layer includes an opaque metal electrode, the metal electrode needs to be positioned away from the position where light is transmitted to avoid affecting the display effect and the touch effect.

[0067] Based on the same inventive concept, an embodiment of the present invention further provides a display device, the implementation principle of the display device is similar to the implementation principle of the aforementioned display panel. The specific implementation method of the display device can refer to the embodiment of the aforementioned display panel, and the repeated parts will not be repeated.

[0068] Specifically, an embodiment of the present invention provides a display device, such as Fig.16 As shown, it includes the display panel 1601 as described above. The display device includes but is not limited to: a television, a mobile phone, a watch and other devices with an OLED display screen.

[0069] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display panel, characterized in that: include: A substrate, on which an OLED light-emitting layer, a reflective layer, a light-shielding layer and a color-resisting layer are sequentially stacked; The reflective layer has a first opening, and an orthographic projection of the first opening on the substrate overlaps with an orthographic projection of a light emitting area of ​​the OLED light emitting layer on the substrate; The light shielding layer has a second opening, the orthographic projection of the first opening on the substrate is located within the orthographic projection of the second opening on the substrate, the second opening is arranged corresponding to the pixels in the light-emitting area, the color resist layer fills the first opening and the second opening, the reflective layer has a side wall at the first opening, the color resist layer contacts the side wall, and the refractive index of the color resist layer is greater than the refractive index of the reflective layer; The display panel includes a first area and a second area, the size of the second opening corresponding to the pixels of the same color in the first area is smaller than the size in the second area, the shading layer has a third opening in the first area, the orthographic projection of the third opening on the substrate does not overlap with the orthographic projection of the light-emitting area of ​​the OLED light-emitting layer on the substrate, and the third opening is independent of the second opening.

2. The display panel according to claim 1, wherein: The third openings are evenly arranged in an array.

3. The display panel according to claim 2, wherein: One of the third openings is disposed around at least one of the second openings.

4. The display panel according to claim 3, wherein: The third opening is in an "S" shape, and is arranged around two adjacent second openings.

5. The display panel according to claim 3, wherein: The third opening is in a "U" shape, and is arranged around two adjacent second openings.

6. The display panel according to claim 5, wherein: The "U"-shaped openings of the third openings in adjacent columns face opposite directions.

7. The display panel according to claim 3, wherein: The third opening is in a ring shape, and is arranged around two adjacent second openings.

8. The display panel according to claim 2, wherein: The third opening is located between adjacent second openings.

9. The display panel according to claim 8, wherein: The third opening is in an "X" shape.

10. The display panel according to claim 8, wherein: The third opening is ring-shaped.

11. The display panel according to claim 1, wherein: An angle between the side wall and a first direction is greater than 0°, the side wall faces a direction away from the substrate, and the first direction is a direction perpendicular to the substrate.

12. The display panel according to claim 1, wherein: The material of the reflective layer is polyimide.

13. The display panel according to any one of claims 1 to 12, characterized in that: include: An encapsulation layer is sandwiched between the OLED light-emitting layer and the reflective layer.

14. The display panel according to claim 13, wherein: include: A touch layer is sandwiched between the packaging layer and the reflective layer.

15. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-14.

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