Display panel and display device

Abstract

The application provides a display panel and a display device, comprising a light-emitting area and a non-light-emitting area located at the periphery of the light-emitting area; the display panel comprises a light-emitting side and a backlight side oppositely arranged along the thickness direction; the display panel comprises a touch layer and a filter layer located in the touch layer, the filter layer comprises color resistance, the touch layer comprises a first touch trace and a second touch trace, and the second touch trace is located close to the light-emitting side of the first touch trace; the color resistance comprises first color resistance and second color resistance, the first color resistance is located in the light-emitting area, the second color resistance, the first touch trace and the second touch trace are all located in the non-light-emitting area, and the second color resistance is located between the first touch trace and the second touch trace; the second color resistance is arranged in the same layer and with the same material as the first color resistance. The filter layer is integrated in the touch layer, in addition, the first color resistance and the second color resistance can be prepared at the same time. Therefore, the display panel and the display device provided by the application can simplify the preparation process of the display panel, thereby simplifying the preparation process of the display device.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and more particularly to a display panel and display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are characterized by active light emission, high contrast, ultra-thinness, low temperature resistance, fast response speed, low power consumption, wide viewing angle, and strong shock resistance, which has led to their increasing use.

[0003] In related technologies, a display panel includes a light-emitting area and a non-light-emitting area located around the light-emitting area. The display panel includes a touch layer and a light-filtering layer located on the touch layer. The light-filtering layer includes a color resist layer and a light-shielding layer, wherein the color resist layer is located in the light-emitting area and the light-shielding layer is located in the non-light-emitting area.

[0004] However, the manufacturing process of the aforementioned display panels is quite complex. Summary of the Invention

[0005] In view of at least one of the above-mentioned technical problems, embodiments of this application provide a display panel and a display device that can simplify the manufacturing process of the display panel and the display device.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a display panel, including: a light-emitting area and a non-light-emitting area located around the light-emitting area; the display panel includes a light-emitting side and a backlight side disposed opposite to each other along the thickness direction;

[0008] The display panel includes a touch layer and a filter layer located within the touch layer. The filter layer includes color resist. The touch layer includes a first touch trace and a second touch trace, with the second touch trace located near the light-emitting side of the first touch trace. The color resist includes a first color resist and a second color resist. The first color resist is located in the light-emitting area, while the second color resist, the first touch trace, and the second touch trace are all located in the non-light-emitting area, with the second color resist located between the first touch trace and the second touch trace. The second color resist and the first color resist are disposed in the same layer and made of the same material, with a gap between the first color resist and the second color resist.

[0009] The display panel provided in this application embodiment may include a light-emitting area and a non-light-emitting area located around the light-emitting area; the display panel includes a light-emitting side and a backlight side disposed opposite to each other along the thickness direction. The display panel may include a touch layer and a filter layer located in the touch layer. The filter layer is used to reduce the reflection of ambient light, thereby improving the display effect of the display panel. Since the filter layer is integrated into the touch layer, the total number of structural layers of the touch layer and the filter layer can be reduced (for example, the filter layer can partially or completely replace the first insulating layer and / or the second insulating layer in the touch layer), thereby simplifying the manufacturing process of the touch layer and the filter layer. The filter layer may include a color resist, the touch layer includes a first touch trace and a second touch trace, the second touch trace being located near the light-emitting side of the first touch trace; the color resist includes a first color resist and a second color resist, the first color resist being located in the light-emitting area, the first color resist being used to filter light in the ambient light that is different from its own color, thus playing a filtering role. The second color resist, the first touch trace, and the second touch trace are all located in the non-light-emitting area, with the second color resist positioned between the first and second touch traces. The second color resist can electrically isolate the first and second touch traces. The second color resist is disposed in the same layer and made of the same material as at least a portion of the first color resist, thereby allowing for the simultaneous fabrication of both the first and second color resists. This simplifies the fabrication process of both the first and second color resists, and consequently simplifies the fabrication process of the display panel and the display device.

[0010] In one possible implementation, the first color resist includes multiple sub-color resists of different colors arranged at intervals, and the second color resist is arranged in the same layer and material as the sub-color resist of at least one color.

[0011] It is possible for the thickness of the first color resist to be in the range of 0.5μm-5μm; and / or for the thickness of the second color resist to be in the range of 0.5μm-15μm; and / or for the dielectric constant of the color resist to be less than or equal to 10; and / or for the surface impedance of the color resist to be greater than or equal to 10. 11 Ω / squared.

[0012] In this way, the first color resist and the second color resist can be prepared simultaneously, thereby simplifying the manufacturing process of the display panel and the display device.

[0013] In one possible implementation, the second color resist has a via extending through the second color resist along the thickness direction, and the second touch trace covers the wall of the via and is connected to the first touch trace.

[0014] Along the direction from the backlight side to the light-emitting side, the opening of the via gradually increases.

[0015] In this way, gaps are less likely to appear between the second touch trace and the wall of the via, and the connection between the two is more stable.

[0016] In one possible implementation, the filter layer further includes a light-shielding layer, at least partially located on the light-emitting side of the second touch trace.

[0017] It is possible for the light-shielding layer to project onto the plane where the first touch trace is located, covering the first touch trace; and / or for the light-shielding layer to project onto the plane where the second touch trace is located, covering the second touch trace.

[0018] In this way, the light-shielding layer can prevent the reflection of ambient light, thereby ensuring the display effect of the display panel.

[0019] In one possible implementation, at least a portion of the first color resist extends into the non-emitting region, and the light-shielding layer is located on the light-emitting side of the first color resist. The orthographic projection of the first color resist located in the non-emitting region onto the plane of the light-shielding layer partially overlaps with the light-shielding layer.

[0020] What can be achieved is that the orthographic projection of the second touch trace onto the plane where the second color resist is located is inside the outer edge of the second color resist.

[0021] This avoids the possibility of gaps appearing between the first color resist and the light-shielding layer due to process errors. Without the first color resist in these gaps, light cannot be filtered, which would affect the display effect of the display panel.

[0022] In one possible implementation, there is a gap between the first color resist and the second color resist, and the light-shielding layer is located in the gap;

[0023] What can be achieved is that the spacing between the first color resist and the second color resist gradually increases along the direction from the backlight side to the light-emitting side.

[0024] In this way, the light-shielding layer can protect the first touch trace, the second touch trace, and the second color resist.

[0025] In one possible implementation, a protective layer is provided in the touch layer, with at least a portion of the protective layer located on the light-emitting side of the first color resist.

[0026] In this way, the protective layer can protect the other structural layers in the touch layer.

[0027] In one possible implementation, the protective layer includes a first protective layer that covers the surface of the first color resist near the light-emitting side;

[0028] What can be achieved is that the refractive index of the first color resist is less than the refractive index of the first protective layer;

[0029] It is possible to have a display panel including an adhesive layer located on the light-emitting side of the touch layer, with the refractive index of the adhesive layer being less than that of the first protective layer.

[0030] In this way, the first protective layer can protect the first color resist.

[0031] In one possible implementation, the protective layer includes a second protective layer located on the surface of the light-shielding layer near the light-emitting side and / or the backlight side; it is also possible that the first and second protective layers are integral components.

[0032] In this way, the second protective layer can protect the first touch trace, the second touch trace, and the second color resistor.

[0033] A first aspect of this application provides a display device, including the display panel described in the first aspect above.

[0034] The display device provided in this application includes a display panel, which may include a light-emitting area and a non-light-emitting area located around the light-emitting area. The display panel includes a light-emitting side and a backlight side disposed opposite to each other along the thickness direction. The display panel may include a touch layer and a filter layer located in the touch layer. The filter layer is used to reduce the reflection of ambient light, thereby improving the display effect of the display panel. Since the filter layer is integrated into the touch layer, the total number of structural layers of the touch layer and the filter layer can be reduced (for example, the filter layer can partially or completely replace the first insulating layer and / or the second insulating layer in the touch layer), thereby simplifying the manufacturing process of the touch layer and the filter layer. The filter layer may include a color resist. The touch layer includes a first touch trace and a second touch trace, with the second touch trace located near the light-emitting side of the first touch trace. The color resist includes a first color resist and a second color resist. The first color resist is located in the light-emitting area and can be used to filter light of a different color from its own in the ambient light, thus playing a filtering role. The second color resist, the first touch trace, and the second touch trace are all located in the non-light-emitting area, with the second color resist positioned between the first and second touch traces. The second color resist can electrically isolate the first and second touch traces. The second color resist is disposed in the same layer and made of the same material as at least a portion of the first color resist, thereby allowing for the simultaneous fabrication of both the first and second color resists. This simplifies the fabrication process of both the first and second color resists, and consequently simplifies the fabrication process of the display panel and the display device.

[0035] The structure of this application, as well as its other inventive objectives and beneficial effects, will become more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1This is a schematic diagram of the structure of the display panel provided in an embodiment of this application;

[0038] Figure 2a This is another schematic diagram of the structure of the display panel provided in the embodiments of this application;

[0039] Figure 2b This is another schematic diagram of the structure of the display panel provided in the embodiments of this application;

[0040] Figure 3 This is a partial structural diagram of the touch layer provided in an embodiment of this application;

[0041] Figure 4 This is another partial structural diagram of the touch layer provided in an embodiment of this application;

[0042] Figure 5 This is another partial structural diagram of the touch layer provided in an embodiment of this application;

[0043] Figure 6 This is another partial structural diagram of the touch layer provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100 - Display panel; 100a - Illuminated area;

[0046] 100b - Non-light-emitting area; 110 - Array substrate;

[0047] 120 - Emissive layer; 121 - Pixel layer;

[0048] 122 - Pixel limiting layer; 130 - Encapsulation layer;

[0049] 140 - Buffer layer; 150 - Adhesive layer;

[0050] 160 - Cover plate; 170 - Touch layer;

[0051] 171 - First touch trace; 172 - Second touch trace;

[0052] 174 - First protective layer; 175 - Second protective layer;

[0053] 181 - Light-blocking layer; 182 - Color resist;

[0054] 183 - First color resistor; 185 - Second color resistor;

[0055] 186 - Through hole; 187 - Gap. Detailed Implementation

[0056] In related technologies, a display panel includes a light-emitting area and a non-light-emitting area located around the periphery of the light-emitting area. The display panel includes a touch layer and a light-filtering layer on the touch layer. The light-filtering layer includes a color resist layer and a light-shielding layer, wherein the color resist layer is located in the light-emitting area and the light-shielding layer is located in the non-light-emitting area. The touch layer includes a first touch trace, a first insulating layer, a second touch trace, and a second insulating layer stacked sequentially. The first touch trace and the second touch trace are located in the non-light-emitting area, and both the first insulating layer and the second insulating layer are located in the light-emitting and non-light-emitting areas.

[0057] However, the aforementioned touch layer and filter layer have a large number of structural layers, and each structural layer is fabricated separately. For example, the first touch trace, the first insulating layer, the second touch trace, the second insulating layer, the light-shielding layer, and the color resist layer need to be fabricated sequentially, making the fabrication process of the touch layer and filter layer relatively complex, which in turn makes the fabrication process of the display panel and display device relatively complex.

[0058] Based on at least one of the aforementioned technical problems, embodiments of this application provide a display panel and a display device. The display panel may include a light-emitting area and a non-light-emitting area located around the light-emitting area. The display panel includes a light-emitting side and a backlight side disposed opposite to each other along the thickness direction. The display panel may include a touch layer and a filter layer located in the touch layer. The filter layer is used to reduce the reflection of ambient light, thereby improving the display effect of the display panel. Since the filter layer is integrated into the touch layer, the total number of structural layers of the touch layer and the filter layer can be reduced (for example, the filter layer can partially or completely replace the first insulating layer and / or the second insulating layer in the touch layer), thereby simplifying the manufacturing process of the touch layer and the filter layer. In addition, it is also beneficial to the thinning of the display panel and the display device. The filter layer may include a color resist. The touch layer includes a first touch trace and a second touch trace, with the second touch trace located near the light-emitting side of the first touch trace. The color resist includes a first color resist and a second color resist. The first color resist is located in the light-emitting area and can be used to filter light of a different color from its own in the ambient light, thus playing a filtering role. The second color resist, the first touch trace, and the second touch trace are all located in the non-light-emitting area, with the second color resist positioned between the first and second touch traces. The second color resist can electrically isolate the first and second touch traces. The second color resist is disposed in the same layer and made of the same material as at least a portion of the first color resist, thereby allowing for the simultaneous fabrication of both the first and second color resists. This simplifies the fabrication process of both the first and second color resists, and consequently simplifies the fabrication process of the display panel and the display device.

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0060] The following will combine Figures 1-6 The display device provided in the embodiments of this application will be described.

[0061] This embodiment provides a display device, which includes a display panel 100. The display device can be a mobile or fixed terminal with a display panel 100, such as an electronic paper device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, smart bracelet, smartwatch, supercomputer, or navigator.

[0062] The display panel 100 can be an organic light-emitting diode (OLED) display panel, a micro light-emitting diode (Micro LED or μLED) display panel, or a liquid crystal display (LCD) display panel.

[0063] This application uses an OLED display panel as an example to illustrate the embodiments.

[0064] The display panel 100 provided in the embodiments of this application will be described below.

[0065] This embodiment provides a display panel 100, which can be applied to the above-described display device.

[0066] The display panel 100 may include a light-emitting side and a backlight side disposed opposite to each other along the thickness direction. The light-emitting side is the side used to display the image, and the backlight side is the other side disposed opposite to the light-emitting side along the thickness direction of the display panel 100.

[0067] like Figure 1 , Figure 2a and Figure 2bAs shown, the display panel 100 may include an array substrate 110 and a light-emitting layer 120 located on the array substrate 110. The array substrate 110 has multiple driving units disposed therein, which can be arranged in an array and are electrically connected to the light-emitting layer 120. The driving units provide driving current to the light-emitting layer 120. The driving units may include thin-film transistors (TFTs) and capacitor structures. For example, the thin-film transistors may include at least one of metal oxide (MO) thin-film transistors and low-temperature polysilicon (LTPS) thin-film transistors.

[0068] The following is a description of the light-emitting layer 120 provided in the embodiments of this application.

[0069] The light-emitting layer 120 may include an anode layer and a cathode layer, with the anode layer located on the side of the cathode layer facing the array substrate 110. The anode layer may be a pixel electrode, and the cathode layer may be a common electrode.

[0070] like Figure 1 As shown, the light-emitting layer 120 may include a pixel layer 121 and a pixel defining layer 122. The pixel layer 121 is formed of a light-emitting material and is located between the anode layer and the cathode layer. The pixel layer 121 generally includes multiple pixels, which may be arranged in an array. The multiple pixels may include, but are not limited to, red pixels, green pixels, and blue pixels. In other examples, the multiple pixels may also include white pixels. The pixel defining layer 122 is located between two adjacent pixels and may be disposed around the periphery of the pixel.

[0071] The light-emitting layer 120 may further include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0072] It is understandable that, such as Figure 1 As shown, the display panel 100 includes a light-emitting area 100a and a non-light-emitting area 100b. The light-emitting area 100a corresponds to a pixel and can overlap with the pixel. In addition, a non-light-emitting area 100b is provided between adjacent light-emitting areas 100a. The non-light-emitting area 100b can be disposed around the outer periphery of the light-emitting area 100a and can correspond to at least a portion of the pixel limiting layer 122.

[0073] The display panel 100 may also include one or more of the following: an encapsulation layer 130, a touch layer 170, and a cover plate 160.

[0074] The display panel 100 may also include an encapsulation layer 130, which is located on the side of the light-emitting layer 120 away from the array substrate 110. The encapsulation layer 130 is used to seal the light-emitting layer 120 to prevent external water and oxygen from penetrating into the light-emitting layer 120 and the driving unit and damaging the display panel 100.

[0075] For example, the encapsulation layer 130 can employ thin film encapsulation (TFE) technology. The TFE encapsulation layer 130 may include multiple encapsulation sub-film layers, and the TFE may adopt a multi-layer stacked structure of inorganic layers / organic layers / inorganic layers. Among them, the inorganic layers are used to effectively block water and oxygen, while the organic layers are used to buffer the stress within the inorganic layers.

[0076] like Figure 1 As shown, the display panel 100 may further include a touch layer 170, which is located on the side of the encapsulation layer 130 opposite to the array substrate 110. The touch layer 170 is used to implement touch functionality. The display panel 100 may include a cover plate 160, which is located on the side of the touch layer 170 opposite to the array substrate 110. The cover plate 160 is used to protect the display panel 100 to prevent users from scratching the display panel 100 when using it. That is, the touch layer 170 is located between the cover plate 160 and the encapsulation layer 130.

[0077] For example, a buffer layer 140 may be provided between the touch layer 170 and the encapsulation layer 130. The buffer layer 140 may be formed of inorganic materials (such as silicon nitride, silicon oxide, etc.) or organic materials. Of course, the buffer layer 140 may not be provided, and the touch layer 170 may be directly provided on the encapsulation layer 130, which is beneficial to the thinning of the display panel 100.

[0078] For example, an adhesive layer 150 may be provided between the cover plate 160 and the touch layer 170, the adhesive layer 150 being used to connect the cover plate 160 and the touch layer 170; in addition, the adhesive layer 150 may also be used to provide a flat surface to facilitate the connection between the cover plate 160 and the touch layer 170. For example, the adhesive layer 150 may be formed of materials such as optically transparent adhesives, optically transparent resins, or pressure-sensitive adhesives.

[0079] The touch layer 170 provided in the embodiments of this application will be described below.

[0080] like Figure 1 As shown, the touch layer 170 may include a first touch trace 171 and a second touch trace 172. The second touch trace 172 is located on the side of the first touch trace 171 that is close to the light-emitting side, that is, the second touch trace 172 is located on the side of the first touch trace 171 that is away from the light-emitting layer 120.

[0081] In the touch layer 170, one of the first touch trace 171 and the second touch trace 172 is a bridging layer, and the other of the first touch trace 171 and the second touch trace 172 can be a touch function layer. The touch function layer may include multiple first touch electrodes extending along a first direction and multiple second touch electrodes extending along a second direction. The first direction and the second direction are different; for example, the first direction may be the length direction of the display panel 100, and the second direction may be the width direction of the display panel 100.

[0082] The length, width, and thickness described in the embodiments of this application are merely for descriptive convenience and do not imply any limitation on the dimensions. For example, the length may be greater than, equal to, or less than the width.

[0083] For example, one of the first and second touch electrodes is a driving electrode, and the other is a sensing electrode. It should be noted that although both the driving electrode and the sensing electrode are formed by the second touch trace 172, they are insulated from each other. One of the driving electrode and the sensing electrode is a continuous structure along a first direction (or a second direction), while the other includes multiple spaced substructures along the second direction (or the first direction) and is connected by a bridging layer.

[0084] For example, the first touch trace 171 and the second touch trace 172 can both be located in the non-light-emitting area 100b, thereby avoiding the impact on the aperture ratio of the display panel 100.

[0085] For example, the first touch trace 171 and the second touch trace 172 can be formed as a single conductive layer or as a stacked structure of multiple conductive layers.

[0086] A filter layer may be integrated into the touch layer 170. The filter layer can be used to replace at least part of the other insulating material layers in the touch layer 170, except for the first touch trace 171 and the second touch trace 172. This can make the overall thickness of the display panel 100 smaller, which is beneficial to the thinning of the display panel 100. In addition, the thinned display panel 100 has better bending performance.

[0087] The filter layer provided in the embodiments of this application will be described below.

[0088] The filter layer can be used to reduce the reflection of ambient light, thereby improving the display effect of the display panel 100.

[0089] The filter layer may include a color resist 182, which can be used to filter light of a different color from its own in ambient light. The color resist 182 may be formed of an organic material, which has high flexibility and is beneficial to the bending performance of the display panel 100.

[0090] In some embodiments, such as Figure 1 As shown, the color resist 182 may include a first color resist 183, which is located in the light-emitting area 100a. The first color resist 183 is configured to correspond one-to-one with each pixel. The orthographic projection of the first color resist 183 onto the light-emitting layer 120 covers the pixel and has the same color as the covered pixel to avoid light mixing. For example, the first color resist 183 corresponding to a red pixel is a red sub-color resist. The red sub-color resist can block light emitted from blue and green pixels while allowing red light emitted from red or white pixels to pass through.

[0091] It is understandable that the first color resist 183 may include multiple sub-color resists of different colors arranged at intervals, such as any one or more of red, green, blue, and white sub-color resists. The principle has already been explained and will not be repeated here.

[0092] In some embodiments, the color resist 182 may include a second color resist 185 located between the first touch trace 171 and the second touch trace 172. The second color resist 185 may electrically isolate the first touch trace 171 and the second touch trace 172. For example, the second color resist 185 may be formed of an organic material with a low dielectric constant, thereby reducing the parasitic capacitance on the second touch trace 172 and improving touch performance.

[0093] For example, the dielectric constant of color resist 182 can be less than or equal to 10. For instance, the dielectric constant of color resist 182 can be any value below 10, such as 1, 3, 5, 7, 10, or 10, thereby reducing the parasitic capacitance on the second touch trace 172 and improving touch performance. The surface impedance of color resist 182 can be greater than or equal to 10. 11 Ω / square, for example, the surface impedance of color resist 182 can be 10 Ω / square. 11 Ω / square, 10 12 Ω / square, 10 13 Ω / square or 10 14 Ω / square, etc., thus enabling better electrical isolation between the first touch trace 171 and the second touch trace 172.

[0094] For example, such as Figure 3 and Figure 4 As shown, the second color resist 185 may have multiple vias 186 extending through the second color resist 185 along its thickness direction. The first touch trace 171 and the second touch trace 172 are connected by bridging through the vias 186. The second touch trace 172 covers the side of the second color resist 185 opposite to the light-emitting layer 120. The second touch trace 172 extends into the via 186 and covers the wall surface of the via 186, thereby electrically connecting to the first touch trace 171 through the via 186.

[0095] For example, along the direction from the backlight side to the light-emitting side, that is, along the direction from the light-emitting layer 120 to the touch layer 170, the opening of the via 186 gradually increases. At this time, the cross-section of the via 186 is an inverted trapezoid, and the hole wall of the via 186 is inclined. The hole wall of the via 186 includes a first end near the cover plate 160 and a second end near the light-emitting layer 120. In the case of a second color resist 185 with the via 186, the first end is closer to the edge of the second color resist 185 than the second end, that is, the first end is inclined towards the edge of the second color resist 185 compared to the second end. This allows the second touch trace 172 to better cover the hole wall of the via 186, making it less likely for gaps to appear between the second touch trace 172 and the hole wall of the via 186, resulting in more stable adhesion of the second touch trace 172 and making it less prone to breakage.

[0096] For example, the orthographic projection of the second touch trace 172 onto the plane containing the second color resist 185 can be located inside the outer edge of the second color resist 185. That is, the size of the second color resist 185 (including the via 186) can be larger than the second touch trace 172, and the edge of the second color resist 185 will protrude beyond the edge of the second touch trace 172, thus providing better support for the second touch trace 172. In addition, the edge of the second touch trace 172 is far from the cathode layer in the light-emitting layer 120, which can reduce parasitic capacitance and ensure touch performance.

[0097] In this embodiment, the second color resist 185 can be disposed in the same layer and with the same material as at least part of the first color resist 183. The first color resist 183 and the second color resist 185 can be prepared simultaneously, that is, there is no need to prepare the first color resist 183 and the second color resist 185 separately. This simplifies the preparation process of the first color resist 183 and the second color resist 185, thereby simplifying the preparation process of the display panel 100 and the display device.

[0098] For example, the second color resist 185 may have the same color as at least one of the multiple color sub-color resists in the first color resist 183, and the second color resist 185 and the sub-color resist of the same color may be disposed in the same layer and made of the same material. For example, the second color resist 185 may be fabricated simultaneously with one of the color sub-color resists, in which case the thickness of the first color resist 183 may be equal to the thickness of the second color resist 185. Alternatively, the second color resist 185 may be fabricated with two of the color sub-color resists (…). Figure 5 ) or three colors ( Figure 6The sub-color resists of the second color resist 185 and multiple colors are prepared simultaneously. When the second color resist 185 and multiple colors of sub-color resists are prepared simultaneously, the thickness of the second color resist 185 can be greater than the thickness of the first color resist 183, and the thickness of the second color resist 185 can be less than the sum of the thicknesses of the multiple colors of sub-color resists. At this time, the thickness of the second color resist 185 is relatively large, which can increase the distance between the second touch trace 172 and the cathode layer in the light-emitting layer 120, thereby reducing the parasitic capacitance between the second touch trace 172 and the cathode layer and improving the touch performance.

[0099] In this application's embodiments, "same layer, same material" refers to a base film layer formed from the same material. After patterning and / or other processing of the base film layer, different parts of the base film layer are used to form various structural film layers. The processing techniques for the different structural film layers formed from the base film layer can be the same or different, and the different structural film layers formed can have the same or different thicknesses, and can also be on the same horizontal plane or different horizontal planes.

[0100] For example, the thickness of the first color resist 183 can range from 0.5μm to 5μm; and the thickness of the second color resist 185 can range from 0.5μm to 15μm. For instance, the thickness of the first color resist 183 can be any thickness between 0.5μm, 1μm, 2μm, 3μm, 5μm, or 0.5μm-5μm. The thickness of the second color resist 185 can be any thickness between 0.5μm, 2μm, 5μm, 10μm, 15μm, or 0.5μm-15μm. This avoids the color resist 182 being too thin, thus preventing a large parasitic capacitance in the second touch trace 172 and ensuring touch performance. Furthermore, it also avoids the color resist 182 being too thick, preventing a significant impact on the thickness of the display panel 100 and contributing to a thinner and lighter display panel 100.

[0101] like Figure 3 As shown, there can be a gap 187 between adjacent first color resist 183 and second color resist 185, that is, adjacent first color resist 183 and second color resist 185 are not connected and are set independently, thus creating a gap 187. Alternatively, adjacent first color resist 183 and second color resist 185 can be in contact, for example, adjacent first color resist 183 and second color resist 185 can be a single piece, thereby allowing adjacent first color resist 183 and second color resist 185 to be manufactured simultaneously, which can improve the overall strength of adjacent first color resist 183 and second color resist 185.

[0102] In embodiments where a gap 187 exists between adjacent first color resist 183 and second color resist 185, the distance between the gap 187 gradually increases along the direction from the backlight side to the light-emitting side. In this case, the sidewall of the first color resist 183 near the second color resist 185 is inclined. This inclined sidewall provides better support for other structural layers attached thereto, resulting in more stable adhesion between these layers and the sidewall, reducing the likelihood of voids. The principle is similar to that of the inclined wall of the via 186, and will not be repeated here. Furthermore, the sidewall of the second color resist 185 near the first color resist 183 is also inclined; the principle of this has already been explained and will not be repeated here.

[0103] In this embodiment, as Figure 3 As shown, the filter layer may also include a light-shielding layer 181, which can be formed of a material capable of blocking light and absorbing light incident on it. The light-shielding layer 181 has a high optical density, and materials with higher optical density have better light absorption. For example, the optical density of the light-shielding layer 181 can be greater than or equal to 1, thereby effectively reducing ambient reflected light. This eliminates the need for a polarizer in the display panel 100, thus reducing the thickness of the display panel 100.

[0104] The light-shielding layer 181 provided in the embodiments of this application will be described below.

[0105] like Figure 3 As shown, at least part of the light-shielding layer 181 is located on the side of the second touch trace 172 closer to the light-emitting side, that is, at least part of the light-shielding layer 181 is located on the side of the second touch trace 172 away from the light-emitting layer 120.

[0106] For example, the orthographic projection of the light-shielding layer 181 onto the plane containing the first touch trace 171 can cover the first touch trace 171, meaning the size of the light-shielding layer 181 is greater than or equal to the size of the first touch trace 171. The orthographic projection of the light-shielding layer 181 onto the light-emitting layer 120 can cover the orthographic projection of the first touch trace 171 onto the light-emitting layer 120. This prevents ambient light from reflecting off the first touch trace 171, thereby improving the display effect of the display panel 100.

[0107] The plane in which the first touch trace 171 is located refers to the plane in which the first touch trace 171 is generally located, and the length extension direction and the width extension direction of the first touch trace 171 are both located in this plane.

[0108] For example, the orthographic projection of the light-shielding layer 181 onto the plane containing the second touch trace 172 can cover the second touch trace 172. That is, the size of the light-shielding layer 181 is greater than or equal to the size of the second touch trace 172, and the orthographic projection of the light-shielding layer 181 onto the light-emitting layer 120 can cover the orthographic projection of the second touch trace 172 onto the light-emitting layer 120. This can prevent ambient light from reflecting off the second touch trace 172, thereby improving the display effect of the display panel 100.

[0109] like Figure 1 As shown, at least a portion of the first color resist 183 extends into the non-light-emitting area 100b, thereby increasing the area of ​​the first color resist 183. This allows more ambient light to reach the first color resist 183, resulting in better ambient light filtering and reduced reflection, thus improving the display effect of the display panel 100. At this time, the light-shielding layer 181 can also be located near the light-emitting side of the first color resist 183, and the light-shielding layer 181 can cover the edge of the first color resist 183. In the non-light-emitting area 100b, the orthographic projection of the first color resist 183 onto the plane of the light-shielding layer 181 partially overlaps with the light-shielding layer 181. For example, during the fabrication of the light-shielding layer 181, due to process errors, the light-shielding layer 181 may deviate from the predetermined position. The edges of the light-shielding layer 181 and the first color resist 183 overlap, which can prevent the light-shielding layer 181 from deviating from the predetermined position and creating a gap between it and the first color resist 183. Without the first color resist 183 at the gap, light cannot be filtered, which will affect the display effect of the display panel 100.

[0110] For example, the thickness of the light-shielding layer 181 can be 1μm-5μm, thereby effectively reducing the reflection of ambient light. The surface impedance of the light-shielding layer 181 can be greater than or equal to 10. 11 Ω / square, the light-shielding layer 181 has good insulation properties.

[0111] In an embodiment where a gap 187 exists between the first color resist 183 and the second color resist 185, the light-shielding layer 181 may also be located within the gap 187 between the first color resist 183 and the second color resist 185. In this case, the light-shielding layer 181 surrounds the first touch trace 171, the second touch trace 172, and the second color resist 185 within the accommodating area formed by the light-shielding layer 181. The light-shielding layer 181 covers a large area, which can better reduce the reflection of ambient light and better prevent light mixing between adjacent pixels. In addition, the light-shielding layer 181 has low water permeability, which can prevent the intrusion of water, oxygen, etc., thereby protecting the first touch trace 171, the second touch trace 172, and the second color resist 185 located in the accommodating area. There is no need to set a separate structural layer to isolate water and oxygen for the touch layer 170, which is beneficial to the thinning of the display panel 100.

[0112] Of course, a protective layer can also be provided in the touch layer 170 to further protect the structural layers in the touch layer 170 and prevent water, oxygen, etc. from invading the touch layer 170 and causing damage. In this case, since the light-shielding layer 181 has already played a protective role, the protective layer can be set to be relatively thin, thereby avoiding the protective layer being too thick and affecting the thickness of the display panel 100.

[0113] The protective layer provided in the embodiments of this application will be described below.

[0114] At least a portion of the protective layer can be located on the side of the first color resist 183 closer to the light-emitting side, that is, at least a portion of the protective layer can be located on the side of the first color resist 183 away from the light-emitting layer 120, thereby protecting the first color resist 183.

[0115] For example, such as Figure 2a and Figure 2b As shown, the protective layer may include a first protective layer 174, which is located on the side of the first color resist 183 facing away from the light-emitting layer 120, thereby protecting the first color resist 183. The first protective layer 174 may cover part or all of the area of ​​the first color resist 183.

[0116] For example, the protective layer may include a second protective layer 175, which may be located on the surface of the light-shielding layer 181 near the light-emitting side, and also on the surface of the light-shielding layer 181 near the backlight side. The second protective layer 175 may be located on at least one side of the light-shielding layer 181 along its thickness direction. The second protective layer 175 may be used to protect the second color resist 185, the first touch trace 171, and the second touch trace 172.

[0117] like Figure 2a As shown, the second protective layer 175 is located on the side of the light-shielding layer 181 that is away from the light-emitting layer 120, and the second protective layer 175 can protect the light-shielding layer 181.

[0118] like Figure 2b As shown, the second protective layer 175 is located on the side of the light-shielding layer 181 near the light-emitting layer 120, and the second protective layer 175 can be located in the gap 187. The gap 187 may contain only the second protective layer 175, or it may contain both the second protective layer 175 and the light-shielding layer 181. Of course, the gap 187 can also be filled with other fillers.

[0119] It is understood that only the first protective layer 174 can be provided, or both the first protective layer 174 and the second protective layer 175 can be provided simultaneously. In embodiments where both the first protective layer 174 and the second protective layer 175 are provided, the first protective layer 174 and the second protective layer 175 can be an integral piece, resulting in better protection. Of course, the first protective layer 174 and the second protective layer 175 can also be two independent structural layers.

[0120] For example, the thickness of the protective layer can be uniform throughout, and the side of the protective layer facing away from the light-emitting layer 120 is not flush. In this case, the protective layer can be a thin film covering the light-shielding layer 181 and / or the first color resist 183. The protective layer has a height variation and is in a bent state, which can provide a large deformation space when the display panel 100 is bent, so as to dissipate bending stress and protect the display panel 100.

[0121] For example, the refractive index of the first color resist 183 can be less than that of the first protective layer 174, thereby reducing the total emission of light from the light-emitting layer 120 at the interface between the first color resist 183 and the first protective layer 174, and thus improving the light emission efficiency.

[0122] For example, the refractive index of the adhesive layer 150 can be less than that of the first protective layer 174. This can prevent the light emitted from the pixel from becoming too concentrated after passing through the adhesive layer 150, thus avoiding a large difference in brightness between the light-emitting areas and mitigating the large-viewing-angle color shift phenomenon. Furthermore, by adjusting the thickness of the first protective layer 174, the reflected light from the pixel can undergo destructive interference on the two opposing surfaces of the first protective layer 174 along its thickness direction, causing them to cancel each other out. This increases the transmittance of the light emitted by the pixel and improves the light extraction efficiency.

[0123] It is understandable that when the first protective layer 174 and the second protective layer 175 are integral components, the refractive index of the second protective layer 175 is the same as that of the first protective layer 174. When the first protective layer 174 and the second protective layer 175 are two independent structural layers, the refractive index of the second protective layer 175 may be the same as or different from that of the first protective layer 174, and the refractive index of the second protective layer 175 may be greater than, equal to or less than the refractive index of the color resist 182 and / or the adhesive layer 150.

[0124] It should be noted that the numerical values ​​and ranges involved in the embodiments of this application are approximate values. Due to the influence of the manufacturing process, there may be a certain range of errors, which can be considered negligible by those skilled in the art.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized by, The display panel comprises a light-emitting region and a non-light-emitting region located at the periphery of the light-emitting region; the display panel comprises a light-emitting side and a backlight side arranged oppositely along the thickness direction; The display panel comprises a touch layer and a filter layer located in the touch layer, the filter layer comprises color resist, the touch layer comprises a first touch trace and a second touch trace, and the second touch trace is located close to the light-emitting side of the first touch trace; The color resist comprises a first color resist and a second color resist, the first color resist is located in the light-emitting region, the second color resist, the first touch trace and the second touch trace are all located in the non-light-emitting region, and the second color resist is located between the first touch trace and the second touch trace; The second color resist is arranged in the same layer and with the same material as at least part of the first color resist, and there is a gap between the first color resist and the second color resist; The filter layer further comprises a light shielding layer, at least part of the light shielding layer is located close to the second touch trace on the light-emitting side, and part of the light shielding layer is located in the gap, and the light shielding layer surrounds the first touch trace, the second touch trace and the second color resist in a containing area formed by the light shielding layer; The touch layer is provided with a protective layer, the protective layer comprises a first protective layer and a second protective layer, the first protective layer covers the surface of the first color resist close to the light-emitting side, and the second protective layer is located on the surface of the light shielding layer close to the backlight side. The first color resist comprises a plurality of sub-color resist of different colors and arranged at intervals, and the second color resist is arranged in the same layer and with the same material as at least one color of the sub-color resist.

2. The display panel of claim 1, wherein, The second color resist has a via hole penetrating through the second color resist along the thickness direction, and the second touch trace covers the hole wall surface of the via hole and is connected with the first touch trace; 3. The display panel of claim 1, wherein, a thickness of the first color resist ranges from 0.5 μm to 5 μm; and / or, a thickness of the second color resist ranges from 0.5 μm to 15 μm; and / or, a dielectric constant of the color resist is less than or equal to 10; and / or, a surface impedance of the color resist is greater than or equal to 10 11 Ω / square.

4. The display panel of claim 1, wherein, In the direction from the backlight side to the light-emitting side, the opening size of the via hole gradually increases. The light shielding layer projects on the first touch trace in the plane; and / or, the light shielding layer projects on the second touch trace in the plane.

5. The display panel according to any of claims 1-4, characterized in that, At least part of the first color resist extends to the non-light-emitting region, the light shielding layer is located close to the light-emitting side of the first color resist, and the projection of the first color resist located in the non-light-emitting region on the plane of the light shielding layer partially overlaps with the light shielding layer.

6. The display panel of any of claims 1-4, wherein, The projection of the second touch trace on the plane of the second color resist is located inside the outer edge of the second color resist.

7. The display panel of claim 6, wherein, In the direction from the backlight side to the light-emitting side, the distance between the first color resist and the second color resist gradually increases.

8. The display panel of any of claims 1-4, wherein, The refractive index of the first color resist is smaller than the refractive index of the first protective layer.

9. The display panel according to any one of claims 1-4, wherein, The display panel comprises an adhesive layer located close to the light-emitting side of the touch layer, and the refractive index of the adhesive layer is smaller than the refractive index of the first protective layer.

10. The display panel of any of claims 1-4, wherein, The first protective layer and the second protective layer are an integral part.

11. The display panel of any of claims 1-4, wherein, The display panel comprises any one of the display panels in claims 1-11.

12. A display device comprising: ​

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