Touch display apparatus, touch display panel, and manufacturing method for touch display apparatus

Abstract

A touch display panel, relating to the technical field of display. The touch display panel comprises: a display substrate comprising a plurality of light-emitting devices arranged in an array along a row direction and a column direction; a touch layer arranged on a light-emitting side of the display substrate and comprising a touch electrode layer, wherein the touch electrode layer has a plurality of light-transmitting holes distributed at intervals, and one light-transmitting hole overlaps one light-emitting device; a light-absorbing layer arranged on the surface of the touch electrode layer distant from the display substrate, wherein the contour of the orthographic projection of the light-absorbing layer on the display substrate coincides with the contour of the orthographic projection of the touch electrode layer on the display substrate; and a plurality of light-filtering portions arranged in a one-to-one correspondence in the light-transmitting holes, wherein the color of each light-filtering portion is the same as the light-emitting color of the light-emitting device overlapped with the light-transmitting hole where the light-filtering portion is located. Also provided are a touch display apparatus and a manufacturing method therefor.

Description

Touch display device, touch display panel and manufacturing method thereof Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a touch display device, a touch display panel, and a method for manufacturing the same. Background Technology

[0002] Touch display panels are widely used in mobile phones, tablets, and other terminal devices, enabling human-computer interaction through touch operation while displaying images. However, the manufacturing process of existing touch display panels is complex and costly.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] This disclosure provides a touch display device, a touch display panel, and a method for manufacturing the same.

[0005] According to one aspect of this disclosure, a touch display panel is provided, comprising:

[0006] The display substrate has multiple light-emitting devices arranged in an array along the row and column directions;

[0007] A touch layer is disposed on the light-emitting side of the display substrate and has a touch electrode layer; the touch electrode layer has a plurality of light-transmitting holes spaced apart, and one of the light-transmitting holes overlaps with one of the light-emitting devices;

[0008] A light-absorbing layer is disposed on the surface of the touch electrode layer away from the display substrate, and the outline of the light-absorbing layer projected onto the display substrate coincides with the outline of the touch electrode layer projected onto the display substrate.

[0009] Multiple light-filtering elements are disposed in each of the light-transmitting holes in a corresponding manner; the color of each light-emitting element is the same as the light-emitting color of the light-emitting device that overlaps with the light-transmitting hole it is located in.

[0010] In one exemplary embodiment of this disclosure, the touch electrode layer is provided with a light-transmitting slit located outside the light-transmitting hole.

[0011] In one exemplary embodiment of this disclosure, there are multiple light-transmitting slits, which are divided into multiple slit groups; one slit group includes multiple light-transmitting slits, and the light-transmitting slits of one slit group are distributed at intervals around one light-transmitting hole.

[0012] In one exemplary embodiment of this disclosure, two adjacent slit groups share a portion of the light-transmitting slit.

[0013] In one exemplary embodiment of this disclosure, at least two of the light-transmitting slits in one group of slits are centrally symmetrical about the center of the light-transmitting hole they surround.

[0014] In one exemplary embodiment of this disclosure, there are multiple light-transmitting slits, some of the light-transmitting holes are surrounded by the light-transmitting slits, and one light-transmitting hole is surrounded by one light-transmitting slit; the light-transmitting slit is a closed annular structure surrounding the light-transmitting hole.

[0015] In one exemplary embodiment of this disclosure, the light-emitting devices are divided into multiple device columns distributed along the row direction, and one of the device columns includes multiple light-emitting devices distributed along the column direction;

[0016] The device column includes a first device column and a second device column that are alternately distributed along the row direction. At least two of the light-emitting devices in the first device column emit different colors, and the light-emitting devices in the second device column emit the same color.

[0017] In one exemplary embodiment of this disclosure, the light-emitting device surrounded by the light-transmitting slit belongs to the first device array.

[0018] In one exemplary embodiment of this disclosure, the light-emitting device surrounded by the light-transmitting slit belongs to the second device series.

[0019] In one exemplary embodiment of this disclosure, there are multiple light-transmitting slits, each light-transmitting hole is surrounded by a light-transmitting slit, and the light-transmitting slit is a closed annular structure surrounding the light-transmitting hole; the two light-transmitting slits surrounding two adjacent light-transmitting holes are spaced apart.

[0020] In one exemplary embodiment of this disclosure, there are multiple light-transmitting slits, at least some of the light-transmitting holes are surrounded by light-transmitting slits, and one light-transmitting hole is surrounded by one light-transmitting slit; at least some of the light-transmitting slits are partially disconnected.

[0021] In one exemplary embodiment of this disclosure, the touch display panel further includes:

[0022] A light-transmitting limiting layer covers the light-absorbing layer and has multiple light-filtering openings, with each light-filtering part correspondingly disposed in each of the light-filtering openings;

[0023] A light-transmitting planarization layer covers the light-filtering portion and the light-transmitting limiting layer.

[0024] In one exemplary embodiment of this disclosure, the sidewall of the light-filtering opening contracts toward the display substrate, and the refractive index of the light-filtering portion is greater than the refractive index of the light-transmitting limiting layer.

[0025] In one exemplary embodiment of this disclosure, the touch display panel further includes:

[0026] A plurality of lenses, one of which is disposed within a light-transmitting aperture and has a gap between itself and the sidewall of the light-transmitting aperture; a filter portion covers the surface of the lens and extends into the gap between the sidewall of the light-transmitting aperture and the lens; the refractive index of the filter portion is less than the refractive index of the lens it covers.

[0027] In one exemplary embodiment of this disclosure, the touch display panel further includes:

[0028] A light-transmitting planar layer covers the light-filtering part and the light-absorbing layer.

[0029] In one exemplary embodiment of this disclosure, the display substrate includes a driving backplate, and the light-emitting device is disposed on one side of the driving backplate;

[0030] The boundary of the light-transmitting hole in the orthographic projection of the driving back plate is located outside the orthographic projection of the light-emitting device that overlaps with it in the driving back plate.

[0031] In one exemplary embodiment of this disclosure, the display substrate further includes:

[0032] A pixel definition layer is disposed on one side of the driving backplate and has multiple pixel openings, with each of the light-emitting devices correspondingly defined in each of the pixel openings; the pixel definition layer is a light-absorbing structure.

[0033] In one exemplary embodiment of this disclosure, the display substrate further includes:

[0034] An encapsulation layer covers each of the light-emitting devices; the touch layer is disposed on the surface of the encapsulation layer away from the light-emitting devices.

[0035] The touch layer also includes:

[0036] An adapter layer is disposed on the surface of the encapsulation layer away from the light-emitting device;

[0037] An insulating layer covers the transition layer;

[0038] The touch electrode layer is disposed on the surface of the insulating isolation layer away from the display substrate and is connected to the transition layer.

[0039] According to one aspect of this disclosure, a touch display device is provided, comprising the touch display panel described in any one of the preceding claims.

[0040] According to one aspect of this disclosure, a method for manufacturing a touch display panel is provided, comprising:

[0041] A touch layer with a touch electrode layer is formed on the light-emitting side of a display substrate; the display substrate has a plurality of light-emitting devices arranged in an array along the row and column directions;

[0042] A light-absorbing layer is formed on the surface of the touch electrode layer away from the display substrate;

[0043] The light-absorbing layer is patterned to form multiple hollow areas;

[0044] The touch electrode layer is patterned using the light-absorbing layer as a mask, and multiple light-transmitting holes are formed in the area corresponding to the hollowed-out area; one of the light-transmitting holes overlaps with one of the light-emitting devices;

[0045] A filter element is formed in each of the light-transmitting holes in a corresponding manner; the color of the filter element is the same as the light-emitting color of the light-emitting device that overlaps with the light-transmitting hole.

[0046] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0048] Figure 1 is a top view of one embodiment of the touch display panel of this disclosure.

[0049] Figure 2 is a schematic diagram of the touch electrodes in one embodiment of the touch display panel of this disclosure.

[0050] Figure 3 is a cross-sectional schematic diagram of an embodiment of the touch display panel of this disclosure without light-transmitting gaps.

[0051] Figure 4 is a partial top view of an embodiment of the touch display panel of the present disclosure without light-transmitting gaps.

[0052] Figure 5 is a cross-sectional schematic diagram of the first embodiment of the first type of touch display panel of this disclosure.

[0053] Figure 6 is a partial top view of a first type of embodiment of the touch display panel of this disclosure.

[0054] Figure 7 is a schematic diagram of the touch display panel in Figure 5 before the touch electrode layer is patterned.

[0055] Figure 8 is a schematic diagram of the touch display panel in Figure 5 after the touch electrode layer has been patterned.

[0056] Figure 9 is a schematic diagram of the touch display panel in Figure 5 after the light-transmitting limiting layer has been formed.

[0057] Figure 10 is a cross-sectional schematic diagram of the first embodiment of the second type of touch display panel of this disclosure.

[0058] Figure 11 is a partial top view of the first embodiment of the second type of touch display panel of this disclosure.

[0059] Figure 12 is a cross-sectional schematic diagram of a second type of second embodiment of the touch display panel of this disclosure.

[0060] Figure 13 is a partial top view of a second embodiment of the second type of touch display panel of this disclosure.

[0061] Figure 14 is a cross-sectional schematic diagram of a fourth embodiment of the touch display panel of this disclosure.

[0062] Figure 15 is a partial top view of the fourth type of touch display panel disclosed herein.

[0063] Figure 16 is a partial top view of a fourth embodiment of the touch display panel of this disclosure.

[0064] Figure 17 is a cross-sectional schematic diagram of an embodiment of the touch display panel of this disclosure having a lens. Detailed Implementation

[0065] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0066] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0067] In this document, the row direction X and column direction Y are two intersecting directions. In the accompanying drawings, the row direction X is horizontal and the column direction Y is vertical, and they are perpendicular to each other. However, this is not a limitation; the row direction X and column direction Y can also be non-perpendicular. Furthermore, those skilled in the art will understand that as the touch display panel rotates, the actual orientation of the row direction X and column direction Y may change, but their relative positions remain unchanged.

[0068] In this article, the "overlap" of features A and B means that the orthographic projections of features A and B on a plane at least partially coincide; the plane can be the surface of a display substrate, driving backplane, substrate, etc.

[0069] This disclosure provides a touch display panel, as shown in FIG1. ​​The touch display panel is divided into a display area AA and a peripheral area WA located outside the display area AA. The peripheral area WA can be a continuous annular area surrounding the display area AA, or it can be a discontinuous area surrounding the display area AA. For example, the peripheral area WA can be distributed on both sides of the display area AA. The display area AA can be used to emit light to display images, while the peripheral area WA does not emit light.

[0070] As shown in Figure 3, the touch display panel may include a display substrate PNL for displaying images, which may include a driving backplate BP and a plurality of light-emitting devices LD disposed on one side of the driving backplate BP, wherein:

[0071] The driving backplane (BP) has a driving circuit that drives the light-emitting diode (LD) to emit light to display an image. In some embodiments of this disclosure, the driving backplane (BP) may include a substrate and a circuit layer located on one side of the substrate. The substrate may be a flat plate structure, and its material may be a rigid material such as glass or a flexible material such as polyimide. Furthermore, the substrate may be a single-layer or multi-layer structure.

[0072] The circuit layer includes the aforementioned driving circuitry. For example, the driving circuitry may include pixel circuitry located in the display area AA and peripheral circuitry located in the peripheral area WA. The pixel circuitry can be of structures such as 3T1C, 7T1C, or 8T1C, as long as it can drive the light-emitting diodes (LDs) to emit light. No special limitations are placed on its structure here. Here, nTmC indicates that one pixel circuit includes n thin-film transistors (represented by the letter "T") and m capacitors (represented by the letter "C"). The number of pixel circuits can be the same as the number of light-emitting diodes (LDs), and they are connected one-to-one with each LD. Of course, multiple LDs can be connected to the same pixel circuit; no special limitations are placed here.

[0073] The peripheral circuit is connected to the pixel circuit and is used to input driving signals to the pixel circuit in order to control the light-emitting device (LD) to emit light. The peripheral circuit may include a gate driving circuit and a light-emitting control circuit, and of course, it may also include other circuits. The specific structure of the peripheral circuit is not specifically limited here.

[0074] The aforementioned driving circuit may include multiple thin-film transistors (TFTs) and capacitors. The TFTs may be top-gate or bottom-gate type TFTs. Each TFT may include an overlapping active layer and a gate, with the active layers of each TFT disposed on the same semiconductor layer; alternatively, they may be disposed on multiple semiconductor layers, with the active layers of different TFTs distributed on different semiconductor layers. The semiconductor layer material may be polysilicon, metal oxide, or other semiconductor materials.

[0075] Taking a top-gate thin-film transistor as an example, in some embodiments, the circuit layer may include a semiconductor layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source / drain layer, a passivation layer, a first planarization layer, a second source / drain layer, and a second planarization layer stacked sequentially along the direction away from the substrate. The active layer of the thin-film transistor is located on the semiconductor layer, the gate is located on the first gate layer, and the two plates of the capacitor are located on the first gate layer and the second gate layer. The first source / drain layer and the second source / drain layer are used to realize connections between at least some of the thin-film transistors and between the thin-film transistors and the capacitor, and are used to transmit drive signals. The type of drive signal and the specific pattern of each film layer depend on the specific configuration of the drive circuit and are not specifically limited here.

[0076] The light-emitting device (LD) can be an OLED (organic light-emitting diode) using organic light-emitting materials, or a Mini LED (sub-millimeter light-emitting diode, with a size of 100μm-200μm), Micro LED (micro light-emitting diode, with a size no larger than 100μm), or LED (light-emitting diode, with a size larger than 200μm) using inorganic light-emitting materials. No special restrictions are placed here, as long as it can emit light. The LD is located within the display area AA.

[0077] As shown in Figure 3, taking an OLED as an example, the light-emitting device (LD) may include a first electrode (ANO), a light-emitting layer (EL), and a second electrode (CAT) stacked sequentially along the direction away from the driving backplane (BP). By applying an electrical signal to the first electrode (ANO) and the second electrode (CAT), the light-emitting layer (EL) can be excited to emit light; the specific light-emitting principle will not be detailed here. The first electrode (ANO) can serve as the anode, and the second electrode (CAT) can serve as the cathode; both are made of conductive materials such as metals and metal oxides. The light-emitting layer (EL) may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer stacked sequentially along the direction away from the driving backplane (BP). Of course, other structures can also be used, as long as they can cooperate with the first electrode (ANO) and the second electrode (CAT) to emit light.

[0078] The light-emitting device (LD) can adopt a top-emitting structure, where the first electrode (ANO) is reflective and the second electrode (CAT) is transparent, causing the LD to emit light away from the driving backplate (BP). In this case, the light-emitting side of the display substrate (PNL) is the side of the LD away from the driving backplate (BP), and the backlight side is the side of the driving backplate (BP) away from the LD. Alternatively, the LD can adopt a bottom-emitting structure, where the second electrode (CAT) is reflective, and the first electrode (ANO) is transparent, causing the LD to emit light towards the driving backplate (BP). In this case, the light-emitting side of the display substrate (PNL) is the side of the driving backplate (BP) away from the LD, and the backlight side is the side of the LD away from the driving backplate (BP). This article only uses the top-emitting LD as an example for explanation.

[0079] As shown in Figure 3, the display substrate PNL may further include a pixel definition layer PDL separating the light-emitting devices (LDs). The pixel definition layer PDL can be disposed on the same side of the driving backplane BP as the LDs. For example, the pixel definition layer PDL can be disposed on the surface of the second planarization layer away from the substrate, along with the first electrodes ANOs. Simultaneously, the thickness of the pixel definition layer PDL is greater than the thickness of the first electrodes ANOs, covering a portion of each first electrode ANO. The pixel definition layer PDL has pixel openings PH that expose each first electrode ANO, with one pixel opening PH exposing one first electrode ANO. The light-emitting device LD is defined through the pixel openings PH. To reduce reflection of ambient light, the pixel definition layer PDL can be made of a resin mixed with carbon black, thereby absorbing light. Of course, other light-absorbing materials can also be used.

[0080] The light-emitting layer EL and the second electrode CAT are stacked sequentially on the first electrode ANO within the pixel opening PH. In some embodiments, the light-emitting layer EL has an intermittent structure, with the light-emitting layer EL of each light-emitting device LD being independently spaced, and the light-emitting colors of different light-emitting devices LD can be different; the second electrode CAT has a continuous solid-layer structure, and the portion of the second electrode CAT located within the pixel opening PH covers the light-emitting layer EL, while the portion of the second electrode CAT located outside the pixel opening PH may also cover the pixel definition layer PDL.

[0081] As shown in Figures 3 and 4, the shape and size of the light-emitting device (LD) are defined by the pixel opening (PH). The range of the LD is the range of the pixel opening (PH), and the size of the LD is the size of the pixel opening (PH). Furthermore, each LD includes at least two LDs of different sizes; the LDs of different sizes emit different colors. Further, the LD can be divided into multiple light-emitting units, and each light-emitting unit can include at least three LDs emitting different colors. For example, a light-emitting unit includes three LDs: a first LD1 emitting red light, a second LD2 emitting blue light, and a third LD3 emitting green light. The orthographic projection of the three LDs onto the driving backplane (BP) can be a circle, an ellipse, or a rectangle, or other shapes. The area of ​​the orthographic projection of the first light-emitting device LD1 and the second light-emitting device LD2 on the driving backplate BP is greater than the area of ​​the orthographic projection of the third light-emitting device LD3 on the driving backplate BP. The areas of the orthographic projection of the first light-emitting device LD1 and the second light-emitting device LD2 can be the same or different. For example, the area of ​​the orthographic projection of the second light-emitting device LD2 on the driving backplate BP is greater than the area of ​​the orthographic projection of the first light-emitting device LD1 on the driving backplate BP.

[0082] As shown in Figure 3, the touch display panel also includes a TFE encapsulation layer, which covers each light-emitting device (LD) to block external moisture and oxygen, preventing the LD from being corroded. In some embodiments of this disclosure, the TFE encapsulation layer can be a thin-film encapsulation method, which may include a first inorganic layer, an organic layer, and a second inorganic layer, wherein:

[0083] The first inorganic layer can cover each light-emitting device (LD), that is, the first inorganic layer can cover the surface of the second electrode (CAT) away from the driving backplane (BP). The material of the first inorganic layer can include inorganic insulating materials such as silicon nitride and silicon oxide.

[0084] The organic layer can be disposed on the surface of the first inorganic layer away from the driving backplane BP. The boundary of the orthographic projection of the organic layer on the driving backplane BP can be located in the peripheral area WA, ensuring that the organic layer can cover each light-emitting device LD.

[0085] The second inorganic layer can cover both the organic layer and the first inorganic layer that is not covered by the organic layer. The second inorganic layer can block the intrusion of water and oxygen, and planarization can be achieved by the organic layer, which is fluid before curing. The material of the second inorganic layer can include inorganic insulating materials such as silicon nitride and silicon oxide.

[0086] As shown in Figure 3, the touch display panel may further include a touch layer TSP, which can be disposed on the light-emitting side of the display substrate PNL. For example, the touch layer TSP can be disposed on the surface of the encapsulation layer TFE away from the light-emitting device LD, that is, the surface of the encapsulation layer TFE away from the driving backplane BP. This allows the touch layer TSP to be formed directly on the encapsulation layer TFE, without having to externally mount the already fabricated touch structure onto the display substrate PNL, thus simplifying the structure. The touch layer TSP may include a touch electrode layer TMB, wherein:

[0087] As shown in Figure 2, the touch electrode layer TMB can be divided into multiple electrode blocks, with at least some of the electrode blocks located within the display area AA. The display area AA is both the area for displaying images and the area for touch. The electrode blocks are distributed along the row direction X and the column direction Y. The touch layer TSP can adopt a capacitive touch structure, which can be a mutual capacitance structure or a self-capacitive structure. Taking a mutual capacitance structure as an example, as shown in Figure 2, the touch layer TSP can include multiple first touch electrodes TX and second touch electrodes RX. Each first touch electrode TX can extend along the row direction X and be spaced apart along the column direction Y; each second touch electrode RX can extend along the column direction Y and be spaced apart along the row direction X, such that each second touch electrode RX intersects with the first touch electrode TX, and the two are insulated at the intersection. Each electrode block includes multiple first electrode blocks Txc and multiple second electrode blocks Rxc; the first touch electrode TX includes multiple first electrode blocks Txc, and the second touch electrode RX includes multiple second electrode blocks Rxc.

[0088] One of the first touch electrode TX and the second touch electrode RX can be used as a driving electrode and the other as a sensing electrode. The driving electrode can receive driving signals and form a capacitor between adjacent first electrode blocks Txc and second electrode blocks Rxc. When a finger touches the area, the capacitance of the touch area changes, and the sensing electrode emits a touch sensing signal.

[0089] In some embodiments of this disclosure, as shown in FIG2, the first touch electrode TX may include a plurality of first electrode blocks Txc sequentially connected along the row direction X and an electrode connection portion connecting two adjacent first electrode blocks Txc. The second touch electrode RX may include a plurality of second electrode blocks Rxc sequentially connected along the column direction Y and a transition bridge BR connecting two adjacent second electrode blocks Rxc. The electrode connection portion and the transition bridge BR are located on different layers and are arranged crosswise, so that the second touch electrode RX intersects with and is insulated from the first touch electrode TX. For example, the touch layer further includes a transition layer TMA and an insulating isolation layer TLD, wherein:

[0090] As shown in Figure 3, the transition layer TMA is located on the light-emitting side of the display substrate PNL, that is, on the side of the encapsulation layer TFE away from the light-emitting device LD, and the transition bridge BR is located in the transition layer TMA.

[0091] As shown in Figure 3, the insulating isolation layer TLD covers the transition layer TMA. Its material can be inorganic insulating materials such as silicon nitride, silicon oxide, or silicon oxynitride, or organic insulating materials such as optical adhesive; no special limitation is made here, as long as it provides insulation. The touch electrode layer TMB is located on the surface of the insulating isolation layer TLD away from the display substrate PNL, thus being insulated from the transition layer TMA. The electrode connection portion is located in the touch electrode layer TMB; that is, the touch electrode layer TMB includes not only electrode blocks but also electrode connection portions. The electrode connection portion and the first electrode block Txc connected to it can be an integral structure.

[0092] Furthermore, as shown in Figure 3, in some embodiments of this disclosure, the touch layer TSP may further include a touch buffer layer TBU, which may be disposed on the light-emitting side of the display substrate PNL. For example, the touch buffer layer TBU may directly cover the surface of the encapsulation layer TFE away from the light-emitting device LD, that is, the surface of the encapsulation layer TFE away from the driving backplane BP. The material of the touch buffer layer TBU may include inorganic insulating materials such as silicon nitride, silicon oxide, and silicon oxynitride, to prevent impurities on the side of the touch layer TSP near the display substrate PNL from affecting the formation of the touch layer TSP. Of course, in other embodiments of this disclosure, the touch layer TSP may not have a touch buffer layer TBU, and the transition layer TMA may be directly disposed on the surface of the encapsulation layer TFE away from the driving backplane BP.

[0093] In some embodiments of this disclosure, as shown in FIG4, the touch electrode layer TMB can be a mesh structure formed by intersecting grid lines, having multiple light-transmitting holes NH. Each light-transmitting hole NH can overlap with at least one light-emitting device LD. For example, the light-transmitting holes NH can overlap one-to-one with pixel openings PH, and the light-transmitting hole NH is not smaller than the pixel opening PH it overlaps with, thereby allowing light emitted by the light-emitting device LD to pass through the light-transmitting hole NH. For example, to avoid the touch electrode layer TMB obstructing the light-emitting device LD, the boundary of the orthographic projection of the light-transmitting hole NH on the driving backplate BP can be made to surround the orthographic projection of the pixel opening PH it overlaps with on the driving backplate BP. Any light-transmitting hole NH can be formed by multiple grid lines, which can be polygons such as rectangles, rhombuses, and pentagons, where each side of the polygon is a grid line. The light-emitting device LD in FIG4 also represents the pixel opening PH.

[0094] In addition, the transition layer TMA can also be a mesh structure formed by intersecting grid lines, which has multiple mesh openings. The mesh openings of the transition layer TMA overlap one-to-one with the light-transmitting openings NH of the touch electrode layer TMB, and are the same size and shape.

[0095] In some embodiments of this disclosure, as shown in FIG4, if there are at least two light-emitting devices LD of different sizes (different areas of orthographic projection on the driving backplate BP), then each light-transmitting hole NH contains at least two light-transmitting holes NH of different sizes, and among the light-transmitting holes NH that overlap with the two light-emitting devices LD of different sizes, the light-transmitting hole NH that overlaps with the larger light-emitting device LD is larger than the light-transmitting hole NH that overlaps with the smaller light-emitting device LD; that is, the larger the light-emitting device LD, the larger the light-transmitting hole NH that overlaps with it.

[0096] To prevent the touch electrode layer (TMB) from reflecting ambient light and affecting the display effect, a light-absorbing layer (BM) can be provided on the side of the TMB away from the display substrate (PNL). The light-absorbing layer (BM) can be made of black resin or other light-absorbing materials. By absorbing ambient light, the light-absorbing layer (BM) reduces the reflection of ambient light by the TMB, thus improving the display effect. For example, the light-absorbing layer (BM) can be made of resin mixed with carbon black. In some embodiments, the touch electrode layer (TMB) can be covered by a touch planarization layer. The light-absorbing layer (BM) can be disposed on the surface of the touch planarization layer away from the display substrate (PNL). At the same time, the light-absorbing layer (BM) is cut out at the location corresponding to the light-transmitting hole (NH) to allow light emitted by the light-emitting device (LD) to pass through. The touch electrode layer (TMB) and the light-absorbing layer (BM) need to be patterned using two masks through photolithography.

[0097] To simplify the process, the inventors proposed a new solution: a single mask can be used to form the touch electrode layer TMB and the light-absorbing layer BM. Specifically, as shown in Figure 3, the light-absorbing layer BM can be directly stacked on the surface of the touch electrode layer TMB away from the display substrate PNL. The patterned light-absorbing layer BM can be used as a mask to pattern the touch electrode layer TMB, thereby eliminating the need to set a mask for the touch electrode layer TMB to pattern it, thus simplifying the process and reducing costs.

[0098] During manufacturing, as shown in Figure 7, a continuous touch electrode layer TMB is first formed on the light-emitting side of the display substrate PNL. Then, a continuous light-absorbing layer BM is stacked on the surface of the touch electrode layer TMB away from the display substrate PNL. The light-absorbing layer BM can be made of black photoresist or other black photoresist materials. As shown in Figure 7, the light-absorbing layer BM is then patterned using a mask through exposure and development processes to form multiple cutout areas BH that expose the touch electrode layer TMB. Finally, as shown in Figure 8, the patterned light-absorbing layer BM is used as a mask to etch the touch electrode layer TMB exposed by the cutout areas BH, thereby forming light-transmitting holes NH. The boundary of one light-transmitting hole NH is aligned with the boundary of one cutout area BH. Of course, the cutout areas BH of the light-absorbing layer BM can also be used to form other patterns on the touch electrode layer TMB, not just the light-transmitting holes NH.

[0099] Since the light-absorbing layer BM is used as a mask for the touch electrode layer TMB, after the touch electrode layer TMB is patterned, the pattern of the light-absorbing layer BM is the same as the pattern of the touch electrode layer TMB, and the outline of the orthographic projection of the light-absorbing layer BM onto the display substrate PNL coincides with the outline of the orthographic projection of the touch electrode layer TMB onto the display substrate PNL.

[0100] For applications requiring under-display photosensitive sensors, the transmittance of the touch display panel cannot be too low. However, the large area of ​​the light-absorbing layer BM would reduce the transmittance of the touch display panel. To improve transmittance while reducing ambient light reflection, as shown in Figures 5-15, the inventors proposed creating a light-transmitting slit LL in the area outside the light-transmitting hole NH in the touch electrode layer TMB. The light-transmitting slit LL can penetrate the touch electrode layer TMB in a direction perpendicular to the display substrate PNL to allow light to pass through. Simultaneously, as shown in Figure 8, since the outline of the light-absorbing layer BM is the same as the outline of the touch electrode layer TMB, the light-absorbing layer BM forms a hollow area BH in the area corresponding to the light-transmitting slit LL to allow light to pass through. When illustrating the specific pattern of the light-transmitting slit LL in this article, since the outline of the light-absorbing layer BM is the same as the outline of the touch electrode layer TMB, there is a hollow area BH in the light-absorbing layer BM that is the same as the pattern of the light-transmitting slit LL. This article will not specifically describe the pattern of these hollow areas BH. One light-transmitting slit LL corresponds to one hollow area BH.

[0101] The following examples illustrate different forms of the light-transmitting slit LL using various implementation methods:

[0102] First type of implementation method

[0103] As shown in Figures 5 and 6, there are multiple light-transmitting slits LL, i.e., two or more. Each light-transmitting slit LL can be divided into multiple slit groups, and a slit group can include multiple light-transmitting slits LL, such as two, three, or four. Furthermore, the light-transmitting slits LL in any slit group can be distributed at intervals around a light-transmitting hole NH; that is, multiple light-transmitting slits LL can be arranged around at least a portion of the light-transmitting holes NH. There is a certain distance between two adjacent light-transmitting slits LL in the same slit group, ensuring the continuity of the touch electrode layer TMB within this distance. Simultaneously, there is a certain distance between any light-transmitting slit LL and the light-transmitting hole NH surrounding it, ensuring the continuity of the touch electrode layer TMB within this distance.

[0104] The shape of the orthographic projection of the light-transmitting slit LL onto the display substrate PNL can be rectangular or other polygonal, or it can be circular or elliptical. It can also extend along a wavy line or a zigzag line trajectory, as long as it can transmit light and surround the light-transmitting hole NH.

[0105] In some embodiments, two adjacent slit groups may share a portion of the light-transmitting slit LL, meaning that the same light-transmitting slit LL can simultaneously surround two adjacent light-transmitting holes NH. This can improve transmittance while avoiding an excessive number of light-transmitting slits LL, thus reducing manufacturing complexity. Of course, in other embodiments, the two slit groups surrounding two adjacent light-transmitting holes NH may not share a common light-transmitting slit LL.

[0106] In some embodiments, at least two light-transmitting slits LL in a slit group are centrally symmetrical about the center of the light-transmitting hole NH they surround, so that the transmittance around the light-transmitting hole NH is as uniform as possible. Furthermore, the number of light-transmitting slits LL in a slit group is even, and each pair of light-transmitting slits LL is centrally symmetrical about the center of the light-transmitting hole NH.

[0107] For example, as shown in Figure 6, a group of slits contains four light-transmitting slits LL, all of which are rectangular. The four rectangular light-transmitting slits LL are distributed at intervals around a light-transmitting hole NH along a rectangular trajectory. The two light-transmitting slits LL located on opposite sides of the rectangular trajectory are centrally symmetrical about the center of the light-transmitting hole NH.

[0108] Second type of implementation

[0109] As shown in Figures 10-13, there are multiple light-transmitting slits LL, fewer than the number of light-transmitting holes NH. This allows only a portion of the light-transmitting holes NH to be surrounded by light-transmitting slits LL, with one light-transmitting hole NH surrounded by one light-transmitting slit LL. Simultaneously, the light-transmitting slits LL form a closed ring structure around the light-transmitting holes NH. This means that the light-transmitting slits LL can completely sever the touch electrode layers TMB inside and outside the area surrounded by the light-transmitting slits LL. The touch electrode layers TMB outside the area surrounded by the light-transmitting slits LL can transmit touch signals, while the touch electrode layers TMB within the area surrounded by the light-transmitting slits LL, being completely severed, do not transmit touch signals. The fact that only a portion of the light-transmitting holes NH are surrounded by light-transmitting slits LL, rather than all of them, prevents the touch electrodes from being severed.

[0110] As shown in Figures 10 and 11, in the first embodiment of the second type of implementation, the light-emitting devices (LDs) can be divided into multiple device columns distributed along the row direction. Each device column can include multiple light-emitting devices (LDs) distributed along the column direction. Simultaneously, each device column can be divided into a first device column and a second device column, which are alternately distributed along the row direction. In the first device column, at least two light-emitting devices (LDs) emit different colors, while in the second device column, the light-emitting devices (LDs) emit the same color. For example, the light-emitting devices (LDs) in the first device column are first and second light-emitting devices that are alternately distributed along the column direction, and the light-emitting devices (LDs) in the second device column are third light-emitting devices.

[0111] The light-emitting devices LDs with overlapping light-transmitting holes NH surrounded by the light-transmitting gap LL belong to the first device column, while the light-transmitting holes NH of the overlapping light-transmitting devices LDs in the second device column are not surrounded by the light-transmitting gap LL. This ensures that neither the first touch electrode nor the second touch electrode is interrupted by the light-transmitting gap LL, which is beneficial to ensuring the normal operation of the touch function.

[0112] As shown in Figures 12 and 13, in the first embodiment of the second type of implementation, the light-emitting devices (LDs) can be divided into multiple device columns distributed along the row direction, and each device column can include multiple light-emitting devices (LDs) distributed along the column direction. Simultaneously, each device column can be divided into a first device column and a second device column, which are alternately distributed along the row direction. In the first device column, at least two light-emitting devices (LDs) emit different colors, while in the second device column, the light-emitting devices (LDs) emit the same color.

[0113] The light-emitting devices LDs with overlapping light-transmitting holes NH surrounded by the light-transmitting gap LL belong to the second device column, while the light-transmitting holes NH of the overlapping light-transmitting devices LDs in the first device column are not surrounded by the light-transmitting gap LL. This ensures that neither the first touch electrode nor the second touch electrode is interrupted by the light-transmitting gap LL, which is beneficial to ensuring the normal operation of the touch function.

[0114] Third type of implementation

[0115] As shown in Figures 14 and 15, there are multiple light-transmitting slits LL, the same number as the number of light-transmitting holes NH, thus ensuring that each light-transmitting hole NH is surrounded by a light-transmitting slit LL. Furthermore, the light-transmitting slits LL form a closed annular structure around the light-transmitting holes NH. This means that the light-transmitting slits LL completely sever the touch electrode layers TMB inside and outside the slits LL. The touch electrode layers TMB outside the area surrounded by the light-transmitting slits LL can transmit touch signals, while the touch electrode layers TMB within the area surrounded by the light-transmitting slits LL, being completely severed, do not transmit touch signals.

[0116] The two light-transmitting slits LL surrounding the two adjacent light-transmitting holes NH have no common part, that is, the two light-transmitting slits LL are set at intervals; the touch electrode layer TMB between the two adjacent light-transmitting slits LL can transmit touch signals, which can ensure that neither the first touch electrode nor the second touch electrode is cut off by the light-transmitting slits LL, which is conducive to ensuring the normal operation of the touch function, while the touch electrode layer TMB inside the light-transmitting slits LL does not transmit touch signals.

[0117] Fourth type of implementation

[0118] As shown in Figure 16, there are multiple light-transmitting slits LL, and the number can be the same as or different from the number of light-transmitting holes NH. No special limitation is made here. Each light-transmitting hole NH can be surrounded by a light-transmitting slit LL. Of course, if the number of light-transmitting slits LL is less than the number of light-transmitting holes NH, then only some of the light-transmitting holes NH will be surrounded by light-transmitting slits LL.

[0119] At least part of the light-transmitting gap LL is partially broken, meaning that the light-transmitting gap LL is an unclosed structure surrounding the light-transmitting hole NH. The area where the light-transmitting gap LL is broken is the area where the touch electrode layer TMB is continuous. In other words, the light-transmitting gap LL does not completely sever the touch electrode layer TMB, and does not affect the continuity of the touch electrode, ensuring that it can transmit touch signals normally.

[0120] It should be noted that the above four implementation methods are merely illustrative examples. They can be combined in any feasible manner to obtain other implementation methods, and other feasible light-transmitting slits LL can also be used, without any special limitations.

[0121] Since the second electrode CAT and other film layers of the display substrate PNL reflect ambient light, thus affecting the display effect, in some embodiments of this disclosure, the touch display panel may further include multiple light-filtering sections CF, which are correspondingly disposed in each light-transmitting hole NH. The light-filtering section CF can be made of a filter material and has the function of filtering only monochromatic light, and the color of any light-filtering section CF is the same as the light-emitting device LD that overlaps with the light-transmitting hole NH it is located in. By absorbing ambient light from the outside world and ambient light reflected by the second electrode CAT, the reflection of ambient light is reduced, thereby improving the display effect. However, it does not absorb the light emitted by the light-emitting device LD, thus avoiding affecting normal display. Therefore, it is not necessary to use thick and light-lossy components such as circular polarizers to reduce the reflection of ambient light, which is beneficial to reduce thickness and reduce power consumption without reducing brightness. In other words, brightness can be increased without increasing power consumption.

[0122] Furthermore, as shown in Figures 3, 5, 9, 10, 12, and 14, in some embodiments of this disclosure, the touch display panel further includes a light-transmitting limiting layer EO and a light-transmitting planarization layer CO, wherein:

[0123] The light-transmitting limiting layer EO can cover the light-absorbing layer BM and extend to the bottom surface of the light-transmitting hole NH (e.g., the surface of the insulating isolation layer TLD away from the display substrate PNL); the light-transmitting limiting layer EO can have multiple light-filtering openings EH, the number of light-filtering openings EH can be the same as the number of light-transmitting holes NH, and also the same as the number of light-emitting devices LD, and the light-filtering openings EH and light-transmitting holes NH can be in a one-to-one correspondence, and a light-filtering opening EH is at least partially located in a light-transmitting hole NH, and the two can have overlapping space, and the sidewall of the light-transmitting hole NH surrounds the side of the light-filtering opening EH.

[0124] Each filter element CF can be disposed in a corresponding manner in each filter opening EH. The light emitted by a light-emitting device LD can be emitted through the light-transmitting hole NH and the filter element CF inside it. The thickness of the filter element CF can be greater than the depth of the light-transmitting hole NH, so that the edge of the filter element CF in a light-transmitting hole NH can extend to the surface of the light-absorbing layer BM away from the display substrate PNL, but will not enter the adjacent light-transmitting hole NH.

[0125] The light-transmitting planarization layer CO can cover the light-filtering layer CF and the light-transmitting limiting layer EO to achieve planarization. Both the light-transmitting limiting layer EO and the light-transmitting planarization layer CO can be made of light-transmitting materials, such as light-transmitting resin.

[0126] By limiting the refractive indices of the planarization layer CO, the filter CF, and the light-confining layer EO, ​​the light emission angle can be reduced, thereby increasing the brightness of the front of the touch display panel within a certain viewing angle. For example, the sidewall of the filter opening EH can be made to contract towards the display substrate PNL, that is, the inner radial direction of the display substrate PNL of the sidewall of the filter opening EH gradually decreases, and the filter CF fills the filter opening EH and contacts the sidewall of the filter opening EH. At the same time, the refractive index of the filter CF can be made greater than the refractive index of the light-confining layer EO, ​​so that part of the light emitted by the light-emitting device LD can illuminate the sidewall of the filter opening EH and meet the total internal reflection condition, thus being reflected by the sidewall of the filter opening EH to the planarization layer CO and finally emitted, which can converge the light and improve the brightness of the front of the touch display panel.

[0127] Furthermore, the refractive index of the light-transmitting planarization layer CO can be greater than that of the light-transmitting limiting layer EO. When the light emitted by the light-emitting device LD reaches the interface between the light-transmitting planarization layer CO and the light-transmitting limiting layer EO, ​​the light will be refracted. According to the law of refraction, the light will converge at this interface, thereby improving the brightness of the front side. Of course, in some embodiments of this disclosure, the refractive index of the light-transmitting planarization layer CO can be equal to or less than the refractive index of the filter layer CF.

[0128] In other embodiments of this disclosure, the light-transmitting limiting layer EO described above may be omitted, and the light-transmitting hole NH may be filled directly with the filter part CF. The refractive index of the filter part CF is less than the refractive index of the light-transmitting planarization layer CO, which can also achieve the function of improving the brightness of the front side.

[0129] As shown in Figure 17, in some embodiments of this disclosure, the touch display panel may not have the aforementioned light-transmitting limiting layer EO, ​​but may include multiple lenses LE. One lens LE may be disposed within a light-transmitting aperture NH, and there is a gap between the lens LE and the sidewall of the light-transmitting aperture NH. A filter portion CF may cover the surface of one lens LE and extend into the gap between the sidewall of the light-transmitting aperture NH and the lens LE. That is, the filter portion CF is stacked on the surface of the lens LE away from the display substrate PNL and the sidewall of the lens LE. At the same time, the filter portion CF may contact the sidewall of the light-transmitting aperture NH, thereby filling the light-transmitting aperture NH; of course, there may also be a gap between the filter portion CF and the sidewall of the light-transmitting aperture NH.

[0130] The refractive index of the filter element CF can be lower than that of the lens LE it covers. Light emitted from the light-emitting device LD enters the filter element CF through the sidewall of the lens LE, where it is refracted, and some of the light converges, thus achieving a focusing effect and improving front-side brightness. Furthermore, the sidewall of the lens LE can extend towards the display substrate PNL, making the profile of the lens LE's cross-section perpendicular to the display substrate PNL trapezoidal. The lens LE can be made of transparent resin or other materials.

[0131] Furthermore, the touch display panel may also include a light-transmitting planarization layer CO, which can cover the light-filtering portion CF and the light-absorbing layer BM. If there is a gap between the light-filtering portion CF and the sidewall of the light-transmitting aperture NH, the light-transmitting planarization layer CO can fill the gap, thereby achieving planarization. The refractive index of the light-transmitting planarization layer CO can be greater than the refractive index of the light-filtering portion CF, so that the light emitted by the light-emitting device LD will be converged when refracted at the interface where the light-transmitting planarization layer CO and the light-filtering portion CF meet, thereby improving the front brightness. Of course, in other embodiments, the refractive index of the light-transmitting planarization layer CO can be equal to or less than the refractive index of the light-filtering portion CF.

[0132] This disclosure also provides a method for manufacturing a touch display panel, which can be any of the touch display panels described in the above embodiments. The manufacturing method may include steps S110-S150, wherein:

[0133] Step S110: A touch layer with a touch electrode layer is formed on the light-emitting side of a display substrate; the display substrate has multiple light-emitting devices arranged in an array along the row and column directions.

[0134] The structure of the display substrate can be referred to the implementation methods of the display substrate PNL, light-emitting device LD and touch layer described above, and will not be repeated here.

[0135] Step S120: A light-absorbing layer is formed on the surface of the touch electrode layer away from the display substrate.

[0136] The touch electrode layer TMB and the light-absorbing layer BM in step S120 are in their state before patterning, i.e., a continuous whole-layer structure.

[0137] Step S130: Pattern the light-absorbing layer to form multiple hollow areas that expose the touch electrode layer.

[0138] As shown in Figure 7, the light-absorbing layer BM can be made of black photoresist, and the patterning of the light-absorbing layer BM can be achieved by sequential exposure and development processes.

[0139] Step S140: Pattern the touch electrode layer using the light-absorbing layer as a mask to form multiple light-transmitting holes; one light-transmitting hole overlaps with a light-emitting device.

[0140] As shown in Figure 8, using the patterned light-absorbing layer BM as a mask, the touch electrode layer TMB exposed in the cutout area can be etched by dry or wet etching processes to remove the exposed touch electrode layer TMB in the cutout area, thereby obtaining the light-transmitting hole NH and realizing the patterning of the touch electrode layer TMB.

[0141] In addition, if it is necessary to form the light-transmitting gap LL mentioned above in the touch electrode layer TMB, a corresponding hollow area can be formed in the light-absorbing layer BM, and then etched to form it.

[0142] Step S150: Form a filter element in each light-transmitting hole in a corresponding manner; the color of the filter element is the same as the light-emitting color of the light-emitting device that overlaps with the light-transmitting hole.

[0143] The location and structure of the filter unit CF can be referred to the implementation method of the touch display panel above, and will not be repeated here.

[0144] It should be noted that although the steps of the manufacturing method in this disclosure are described in a specific order, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or a step may be broken down into multiple steps.

[0145] This disclosure also provides a touch display device, which may include the touch display panel of any of the above embodiments. The specific structure and beneficial effects of the touch display panel can be referred to the above embodiments of the touch display panel, and will not be described in detail here. The display device of this disclosure can be a medium or large-sized touch display device such as a tablet computer, a laptop computer, or an in-vehicle display, or it can be used in other electronic devices with touch display functions such as mobile phones and smartwatches, which will not be listed here.

[0146] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A touch display panel, comprising: The display substrate has multiple light-emitting devices arranged in an array along the row and column directions; A touch layer is disposed on the light-emitting side of the display substrate and has a touch electrode layer; the touch electrode layer has a plurality of light-transmitting holes spaced apart, and one of the light-transmitting holes overlaps with one of the light-emitting devices; A light-absorbing layer is disposed on the surface of the touch electrode layer away from the display substrate, and the outline of the light-absorbing layer projected onto the display substrate coincides with the outline of the touch electrode layer projected onto the display substrate. Multiple light-filtering elements are disposed in each of the light-transmitting holes in a corresponding manner; the color of each light-emitting element is the same as the light-emitting color of the light-emitting device that overlaps with the light-transmitting hole it is located in.

2. The touch display panel according to claim 1, wherein, The touch electrode layer has a light-transmitting slit located outside the light-transmitting hole.

3. The touch display panel according to claim 2, wherein, The number of light-transmitting slits is multiple, and they are divided into multiple slit groups; each slit group includes multiple light-transmitting slits, and the light-transmitting slits of a slit group are distributed at intervals around a light-transmitting hole.

4. The touch display panel according to claim 3, wherein, The two adjacent gap groups share a portion of the light-transmitting gap.

5. The touch display panel according to claim 3, wherein, At least two of the light-transmitting slits in one of the slit groups are centrally symmetrical about the center of the light-transmitting hole they surround.

6. The touch display panel according to claim 2, wherein, The number of light-transmitting slits is multiple, some of the light-transmitting holes are surrounded by the light-transmitting slits, and one light-transmitting hole is surrounded by one light-transmitting slit; the light-transmitting slit is a closed ring structure surrounding the light-transmitting hole.

7. The touch display panel according to claim 6, wherein, The light-emitting devices are divided into multiple device columns distributed along the row direction, and each device column includes multiple light-emitting devices distributed along the column direction; The device column includes a first device column and a second device column that are alternately distributed along the row direction. At least two of the light-emitting devices in the first device column emit different colors, and the light-emitting devices in the second device column emit the same color.

8. The touch display panel according to claim 7, wherein, The light-emitting device surrounded by the light-transmitting slit belongs to the first device series.

9. The touch display panel according to claim 7, wherein, The light-emitting device surrounded by the light-transmitting slit belongs to the second device category.

10. The touch display panel according to claim 2, wherein, The number of light-transmitting slits is multiple, and each light-transmitting hole is surrounded by a light-transmitting slit, and the light-transmitting slit is a closed annular structure surrounding the light-transmitting hole; the two light-transmitting slits surrounding two adjacent light-transmitting holes are spaced apart.

11. The touch display panel according to claim 2, wherein, The number of light-transmitting slits is multiple, and at least some of the light-transmitting holes are surrounded by light-transmitting slits, with one light-transmitting hole surrounded by one light-transmitting slit; at least some of the light-transmitting slits are partially interrupted.

12. The touch display panel according to any one of claims 1-11, wherein, The touch display panel also includes: A light-transmitting limiting layer covers the light-absorbing layer and has multiple light-filtering openings, with each light-filtering part correspondingly disposed in each of the light-filtering openings; A light-transmitting planarization layer covers the light-filtering portion and the light-transmitting limiting layer.

13. The touch display panel according to claim 12, wherein, The sidewall of the light-filtering opening tapers toward the display substrate, and the refractive index of the light-filtering portion is greater than the refractive index of the light-transmitting limiting layer.

14. The touch display panel according to claim 1, wherein, The touch display panel also includes: A plurality of lenses, one of which is disposed within a light-transmitting aperture and has a gap between itself and the sidewall of the light-transmitting aperture; a filter portion covers the surface of the lens and extends into the gap between the sidewall of the light-transmitting aperture and the lens; the refractive index of the filter portion is less than the refractive index of the lens it covers.

15. The touch display panel according to claim 14, wherein, The touch display panel also includes: A light-transmitting planar layer covers the light-filtering part and the light-absorbing layer.

16. The touch display panel according to any one of claims 1-11, wherein, The display substrate includes a driving backplate, and the light-emitting device is disposed on one side of the driving backplate; The boundary of the light-transmitting hole in the orthographic projection of the driving back plate is located outside the orthographic projection of the light-emitting device that overlaps with it in the driving back plate.

17. The touch display panel according to claim 16, wherein, The display substrate further includes: A pixel definition layer is disposed on one side of the driving backplate and has multiple pixel openings, with each of the light-emitting devices correspondingly defined in each of the pixel openings; the pixel definition layer is a light-absorbing structure.

18. The touch display panel according to any one of claims 1-11, wherein, The display substrate further includes: An encapsulation layer covers each of the light-emitting devices; the touch layer is disposed on the surface of the encapsulation layer away from the light-emitting devices. The touch layer also includes: An adapter layer is disposed on the surface of the encapsulation layer away from the light-emitting device; An insulating layer covers the transition layer; The touch electrode layer is disposed on the surface of the insulating isolation layer away from the display substrate and is connected to the transition layer.

19. A touch display device comprising the touch display panel as described in any one of claims 1-18.

20. A method for manufacturing a touch display panel, comprising: A touch layer with a touch electrode layer is formed on the light-emitting side of a display substrate; The display substrate has multiple light-emitting devices arranged in an array along the row and column directions; A light-absorbing layer is formed on the surface of the touch electrode layer away from the display substrate; The light-absorbing layer is patterned to form multiple hollow areas; The touch electrode layer is patterned using the light-absorbing layer as a mask, and multiple light-transmitting holes are formed in the area corresponding to the hollowed-out area; one of the light-transmitting holes overlaps with one of the light-emitting devices; A filter element is formed in each of the light-transmitting holes in a corresponding manner; the color of the filter element is the same as the light-emitting color of the light-emitting device that overlaps with the light-transmitting hole.

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