Touch-sensitive screen, method for manufacturing the same and display device

Abstract

Touch-sensitive screen that includes: a first substrate (21) and a second substrate (22) which are arranged opposite each other; an organic light emission layer (23) located between the first substrate (21) and the second substrate (22), wherein the organic light emission layer (23) comprises at least one cathode layer and a cathode protection layer (233), and the cathode layer comprises a plurality of block-shaped cathode electrodes (232) arranged in rows and columns and covered by the cathode protection layer (233); a first touch-sensitive layer (241) located on the cathode protective layer (233) and comprising a plurality of first touch-sensitive electrodes (172), each of the first touch-sensitive electrodes (172) comprising at least one first touch-sensitive partial electrode (24); and a second touch-sensitive layer (25) comprising a plurality of second touch-sensitive electrodes (251), each of the plurality of second touch-sensitive electrodes (251) comprising at least one second touch-sensitive partial electrode (251a); wherein the at least one second touch-sensitive partial electrode (251a) extends in a first direction, the at least one first touch-sensitive partial electrode (24) extends in a second direction and the first direction is perpendicular to the second direction, and a projection of the first touch-sensitive partial electrode (24) on the organic light emission layer (23) is located between two adjacent slits of cathode electrodes and a projection of the second touch-sensitive partial electrode (251a) on the organic light emission layer (23) is located between two adjacent rows of cathode electrodes.

Description

Technical field

[0001] The present disclosure relates to the field of display technologies and in particular to a touch-sensitive screen, a method for manufacturing the same and a display device. background

[0002] An active matrix OLED (Active Matrix Organic Light Emitting Diode - AMOLED) is characterized by self-illumination, low energy consumption, fast response time, high contrast, and a wide viewing angle. Therefore, AMOLEDs have a wide range of applications in the field of display technologies.

[0003] With the advancement of display technologies, touch-sensitive structures are integrated into AMOLED displays to enable touch control. In this technique, the touch-sensitive structure is typically integrated into the AMOLED display using an on-cell method. However, in such AMOLED displays with on-cell integrated touch-sensitive structures, electromagnetic interference occurs between the touch-sensitive structure and the display structure during operation. This interference affects both the display and touch control functionality. Furthermore, the aforementioned on-cell integration involves numerous manufacturing processes and results in high production costs.

[0004] US 2012 / 0249454 A1 teaches a display device. The display device includes sensing electrodes and drive electrodes that form capacitances with the sensing electrodes. The drive electrodes can be formed on the same layer as the common cathodes and arranged alternately with the common cathodes.

[0005] US 2012 / 0169636 A1 teaches an organic LED display comprising a first substrate, a first electrode, an organic light-emitting unit, a second electrode, and a second substrate. The first electrode may comprise a co-constructed active array substrate, an LTPS-TFT array, or the like, and may further comprise additional circuitry, elements, and the like.

[0006] US 2011 / 0157093 A1 discloses a front lighting device that includes a capacitive touch sensor. The touch sensor includes an X-directional electrode and a Y-directional electrode. The X-directional electrode is divided into segments connected by conductive bridges. Summary

[0007] In view of the above, embodiments of the present disclosure provide a touch-sensitive screen, a method for manufacturing the same, and a display device that avoids the electromagnetic interference between a touch-sensitive structure and a display structure, the numerous manufacturing processes, and the high production costs of the AMOLED display screen, which incorporates a touch control function integrated with the on-cell method of the related technique.

[0008] The present invention is based on the problem set out below. Due to the intersection of the touch-sensitive electrodes and the cathodes of the display screen, interference can occur at the touch-sensitive electrodes. The problem on which the invention is based is solved by the respective subject matter of the independent claims.

[0009] According to a first aspect, embodiments of the present invention create a touch-sensitive screen which includes: a first substrate and a second substrate, arranged opposite each other; an organic light-emitting layer located between the first substrate and the second substrate, wherein the organic light-emitting layer contains at least one cathode layer formed by a plurality of strip-shaped cathode electrodes; and a first touch-sensitive layer located between the first substrate and the second substrate, containing a multitude of first touch-sensitive electrodes, wherein each of the first touch-sensitive electrodes contains at least one first touch-sensitive partial electrode and a projection of the first touch-sensitive partial electrode is located on the organic light emission layer between two adjacent cathode electrodes.

[0010] According to a second aspect, embodiments of the present disclosure further provide a display device that includes the touch-sensitive screen described in the first aspect listed above.

[0011] According to a third aspect, embodiments of the present disclosure further provide a method for manufacturing a touch-sensitive screen, which includes: Forming an organic light-emitting layer on a second substrate, wherein the organic light-emitting layer contains at least one cathode layer formed by a plurality of strip-shaped cathode electrodes; and Forming a first touch-sensitive layer containing a plurality of first touch-sensitive electrodes on the second substrate, wherein the first touch-sensitive electrode contains at least one first touch-sensitive partial electrode and a projection of the first touch-sensitive partial electrode is located on the organic light-emission layer between two adjacent cathode electrodes.

[0012] With the touch-sensitive screen, the method for manufacturing it, and the display device created with embodiments of the present disclosure, by arranging at least the first touch-sensitive layer, which enables the touch control function, between the first substrate and the second substrate, arranging the cathode electrode in a strip shape, and arranging the projection of the first touch-sensitive partial electrode on the organic light emission layer on the first touch-sensitive layer between two adjacent cathode electrodes, at least electromagnetic interference between the first touch-sensitive layer and the cathode electrode can be reduced, so that the display effect and touch control effect can be improved.Furthermore, the first touch-sensitive layer and the organic light emission layer can be formed using an evaporation process, since the organic light emission layer is also located between the first substrate and the second substrate, thus reducing not only manufacturing processes but also production costs.

[0013] Although several embodiments are disclosed, further embodiments of the present disclosure will become apparent to the person skilled in the art from the following detailed description, which illustrates and describes embodiments. Accordingly, the drawings and the detailed description are to be regarded as illustrative and not as limiting. Brief description of the drawings

[0014] The features, functions and advantages of the present disclosure will become apparent from the detailed description of non-restrictive embodiments with reference to the attached drawings listed below. Fig. Figure 1A is a schematic representation showing the structure of an AMOLED display screen of the related technology; Fig. Figure 1B is a top view of a touch-sensitive structure on a first substrate in Fig. 1A; Fig. Figure 1C is a schematic cross-sectional representation of the touch-sensitive structure in Fig. 1B in one direction A1-A2; Fig. 1D is another schematic cross-sectional representation of the touch-sensitive structure in Fig. 1B in one direction A1-A2; Fig. Figure 2 is a schematic representation showing the structure of a touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 3A is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. 3B is a top view of a second touch-sensitive layer in Fig. 3A; Fig. 3C is a top view of another second touch-sensitive layer in Fig. 3A; Fig. 3D is a schematic representation showing the structure of a touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 3E is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 3F is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 4A is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 4B is a top view showing a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 4A shows; Fig. Figure 4C is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. 4D is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 4C; Fig. Figure 4E is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. 4F is a top view showing a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 4E shows; Fig. Figure 5A is a schematic representation showing the construction of another touch-sensitive screen according to embodiments of the present disclosure; Fig. 5B is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 5A; Fig. 5C is a schematic cross-sectional representation of the first touch-sensitive layer, the second touch-sensitive layer, and the organic light-emitting layer in Fig. 5B in one direction B1-B2; Fig. Figure 5D is a schematic representation showing the structure of another touch-sensitive screen according to embodiments of the present disclosure; Fig. 5E is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 5D; Fig. 5F is a schematic cross-sectional representation of the first touch-sensitive layer, the second touch-sensitive layer, and the organic light-emitting layer in Fig. 5E in one direction C1-C2; Fig. Figure 6A is a schematic flowchart of a method for manufacturing a touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 6B is a schematic flowchart of a method for producing a second touch-sensitive layer in a touch-sensitive screen according to embodiments of the present disclosure; Fig. Figure 6C is a schematic flowchart of a method for producing a second touch-sensitive layer in a further touch-sensitive screen according to embodiments of the present disclosure; and Fig. Figure 7 is a schematic representation showing the construction of a display device according to embodiments of the present disclosure.

[0015] Although various modifications and alternative forms of the embodiments described in the disclosure are possible, specific embodiments are shown in the drawings as examples and are described in detail below. However, it is not intended to limit the disclosure to the specific embodiments described. Rather, the disclosure is intended to cover all modifications, equivalents, and alternatives that fall within the scope of protection of the accompanying claims. Detailed description

[0016] The present disclosure is further described in detail below in combination with the accompanying drawings and embodiments. It should be clear that the specific embodiments described here serve to supplement the description in the present disclosure and not to limit it. Furthermore, it should be noted that only parts, and not the entirety, of the present disclosure are illustrated in the accompanying drawings for descriptive purposes.

[0017] With the advancement of display technologies, a touch-sensitive structure is integrated into an AMOLED display screen to enable touch control. In the related technique, the touch-sensitive structure is integrated into the AMOLED display screen using an on-cell process to implement the touch control function.

[0018] Fig. Figure 1A is a schematic diagram showing the structure of an AMOLED display screen of the related technology. The AMOLED display screen contains, as shown in Fig. Figure 1A shows a first substrate 11 and a second substrate 12 arranged opposite each other, pixels 13, a cathode protection layer 14, and a planar cathode electrode 15 arranged sequentially on the second substrate 12 between the first substrate 11 and the second substrate 12, as well as a touch-sensitive structure 17 arranged on the first substrate 11, wherein the first substrate 11 and the second substrate 12 are bonded together by frame adhesives 16 and, together with the pixels 13, the cathode protection layer 14, and the cathode electrode 15 between the first and second substrates, form an AMOLED display structure. The touch-sensitive structure 17 is, as shown in Fig. 1A shown, assembled into a unit with the AMOLED display structure in the on-cell process, and the touch-sensitive structure 17 contains at least two touch-sensitive layers which may be on different layers or the same layer and are electrically isolated from each other.

[0019] Fig. Figure 1B is a top view of a touch-sensitive structure on the first substrate in Fig. 1A. The touch-sensitive structure contains, as shown in Fig. Figure 1B shows a first passivation layer 171 and a first touch-sensitive layer formed by a plurality of first touch-sensitive electrodes 172, and a second touch-sensitive layer formed by a plurality of second touch-sensitive electrodes 173, both being located below the first passivation layer 171 and the first touch-sensitive electrodes 172 crossing the second touch-sensitive electrodes 173 and being electrically insulated from the second touch-sensitive electrodes 173.

[0020] The first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173 can be located on different layers, as described with reference to Fig. Figure 1C shows a schematic cross-sectional representation of the touch-sensitive structure in Fig. 1B points in the direction A1-A1. The touch-sensitive structure on the first substrate 11 contains, as shown in Fig. Figure 1C shows, in sequence, a second touch-sensitive layer formed by a plurality of second touch-sensitive electrodes 173, a second passivation layer 174, a first touch-sensitive layer formed by a plurality of first touch-sensitive electrodes 172, and a first passivation layer 171. The electrical insulation between the first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173 is achieved via the second passivation layer 174. Alternatively, as shown with reference to Fig. 1D can be seen, which shows a schematic cross-sectional representation of a touch-sensitive structure in Fig. 1B points in the direction A1-A2, the first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173 are located on the same layer. In contrast to Fig. 1C shows Fig. 1D, that the first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173 are located on the same layer, i.e., that the touch-sensitive layers formed by the first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173 are also located on the same layer, wherein the first touch-sensitive electrodes 172 cross the second touch-sensitive electrodes 173 via bridges 175 at the intersection points between the first touch-sensitive electrodes 172 and the second touch-sensitive electrodes 173.

[0021] At the in Fig. In the AMOLED display screen setup shown in Figure 1A, electromagnetic interference occurs between the touch-sensitive structure 17 and the cathode electrode 15 during operation of the AMOLED display screen, affecting the display and touch control functions, regardless of the Fig. 1C or Fig. The structure shown in 1D further illustrates that the touch-sensitive structure 17 is generally formed using a photolithographic process. During the production of the in Fig. 1C and Fig. The structures shown in 1D require four processes of film forming, adhesive application, exposure, development, etching, and peeling, resulting in many manufacturing steps and the need for a photomask for each manufacturing process, leading to high production costs.

[0022] In light of the above, solutions are created using embodiments of the present disclosure. A touch-sensitive screen is created according to embodiments of the present disclosure, and Fig. Figure 2 is a schematic representation showing the structure of the touch-sensitive screen according to embodiments of the present disclosure. The touch-sensitive screen contains, as described with reference to Fig. 2 shows a first substrate 21 and a second substrate 22 arranged opposite each other, an organic light-emitting layer 23 located between the first substrate 21 and the second substrate 22 and containing at least one cathode layer formed by a plurality of strip-shaped cathode electrodes 232, and a first touch-sensitive layer 241 located between the first substrate 21 and the second substrate 22 and containing a plurality of first touch-sensitive electrodes (in Fig. 2 (not shown) contains, wherein the first touch-sensitive electrode includes at least one first touch-sensitive partial electrode 24 and a projection of the same is located on the organic light-emitting layer 23 in a direction perpendicular to the organic light-emitting layer 23 between two adjacent cathode electrodes 232. It should be noted that the projection refers to the projection in the perpendicular direction, i.e., the projection in a direction perpendicular to the display screen. By arranging at least the first touch-sensitive layer for the touch control function between the first and the second substrate,If the cathode electrode 232 is formed in a strip shape and the projection of the first touch-sensitive partial electrode 24 in the first touch-sensitive layer on the organic light emission layer 23 is arranged in the direction perpendicular to the organic light emission layer 23 between two adjacent cathode electrodes 232, the cathode layer is offset relative to the first touch-sensitive layer, so that a coupled parasitic capacitance between the cathode layer and the first touch-sensitive layer can be eliminated.and electromagnetic interference between the first touch-sensitive layer and the cathode electrode 232 can be reduced compared to the related technique, and the display and touch control effects can be improved. Furthermore, both the first touch-sensitive layer and the organic light-emitting layer 23 can be formed using a vapor deposition process, since the organic light-emitting layer 23 is also positioned between the first substrate 21 and the second substrate 22. This reduces the manufacturing processes compared to the photolithographic process for forming the first touch-sensitive layer and the organic light-emitting layer 23 in the related technique. Additionally, the production costs can be reduced by using a vapor deposition mask in the manufacturing processes compared to the photomask used in the related technique.

[0023] In further embodiments, the organic light-emitting layer 23 further comprises a pixel layer 2311 and a cathode protection layer 233, wherein the pixel layer is located between the cathode layer and the second substrate 22 and contains a plurality of pixels 231 below the cathode electrodes 232, and the cathode protection layer 233 has a planar shape and is located on the cathode layer. It should be noted that an upward direction is a direction from the second substrate 22 to the organic light-emitting layer 23, and a downward direction is a direction opposite to the upward direction, where terms such as "on" and "below" describe the relative orientation of elements that may be in direct or indirect contact.

[0024] Furthermore, the touch-sensitive screen includes a second touch-sensitive layer containing a plurality of second touch-sensitive electrodes, and the second touch-sensitive layer and the first touch-sensitive layer are arranged to implement the touch control function of the touch-sensitive screen. The second touch-sensitive layer can be located in various positions, which are illustrated below as examples in embodiments of the present disclosure.

[0025] The second touch-sensitive layer can be located on an outer side of the first substrate. A second touch-sensitive layer 25 is located, as described with reference to Fig. 3A can be seen on a surface of the first substrate 21 that is removed from the second substrate 22, and the second touch-sensitive layer 25 further contains a first passivation layer 252 on a second touch-sensitive electrode 251. Furthermore, the first substrate 21, which is provided with the second touch-sensitive layer 25, can be bonded to the second substrate 22, which is provided with the organic light-emitting layer 23 and the first touch-sensitive layer, via adhesive frames 26.

[0026] The first passivation layer 252 of the second touch-sensitive layer 25 in Fig. 3A can, for example in Fig. Figure 3B shows an integral structure in a planar form. The first passivation layer 252 in a planar form is located, as shown in Fig. Figure 3B shows the structure of the first passivation layer 252 on the second touch-sensitive electrode 251. In another example, the first passivation layer 252 can be shown as described in Figure 3B. Fig. 3C can be seen, and also contains a large number of first passivation units 252a on the second touch-sensitive electrodes 251. Compared with the one in Fig. The structure shown in Figure 3A can include the second touch-sensitive electrode 251 and the first passivation unit 252, as shown in Fig. 3C has been shown to be trained using the same photomask for performing lithography, which further reduces not only the manufacturing processes but also the production costs.

[0027] Furthermore, as with reference to Fig. 3D can be seen, which is in Fig. The touch-sensitive screen shown in Figure 3A further includes a first dielectric layer 27, which is inserted between the first touch-sensitive layer, formed by the first touch-sensitive partial electrodes 24, and the first substrate 21. By inserting the first dielectric layer 27, the thickness of the box created by aligning and adhering the first substrate 21 to the second substrate 22 is precisely controlled, and the organic light-emitting layer 23 is better protected. Furthermore, since the dielectric constant of the first dielectric layer 27 is greater than that of air, the touch control effect of the touch-sensitive screen can be further improved.

[0028] In all embodiments described above, each of the first touch-sensitive partial electrodes 24 of the first touch-sensitive layer is located on the cathode protection layer 233, a perpendicular projection of the first touch-sensitive partial electrode 24 is located on the organic light-emitting layer 23 between two adjacent cathode electrodes 232, and the first touch-sensitive partial electrode 24 is electrically insulated from the cathode electrode 232 via the cathode protection layer 233. In addition to the arrangement of the first touch-sensitive layer described above, the first touch-sensitive layer can alternatively be arranged on other films of the organic light-emitting layer. For example, as described with reference to Fig. As can be seen in Figure 3E, the first touch-sensitive partial electrodes 24, which form the first touch-sensitive layer, are located on the same layer as the cathode electrodes 232. The first touch-sensitive partial electrode 24 is located between two adjacent cathode electrodes 232 and on an organic film 261 between two adjacent pixels 231, and the first touch-sensitive partial electrode is electrically isolated from the cathode electrode 232. In another case, as referred to in Figure 3E, the first touch-sensitive partial electrode 24 is located between two adjacent cathode electrodes 232 and on an organic film 261 between two adjacent pixels 231. Fig. As can be seen in 3F, the first touch-sensitive partial electrodes 24, which form the first touch-sensitive layer, are located on the same layer as the pixels 231, and the first touch-sensitive partial electrodes 24 as well as the pixels 231 are all located on the second substrate 22, with the first touch-sensitive partial electrode 24 being located between two adjacent pixels 231. Furthermore, in the Fig. 3E and Fig. The touch-sensitive screen shown in 3F has the first dielectric layer, as in the one in Fig. The 3D shown structure of the touch-sensitive screen is filled between the cathode protection layer 233 and the first substrate 21, so it is not described again here.

[0029] In addition to the embodiments described above, in which the second touch-sensitive layer is located on the outer side of the first substrate, the second touch-sensitive layer can alternatively be located between the first and second substrates. The first touch-sensitive partial electrodes 24, which form the first touch-sensitive layer, are located, as shown in Fig. As shown in Figure 4A, on the cathode protection layer 233 of the organic light emission layer 23, there is a perpendicular projection of the first touch-sensitive partial electrode 24 on the organic light emission layer 23 between two adjacent cathode electrodes 232, which are aligned in a direction X, and the first touch-sensitive partial electrode 24 is electrically isolated from the cathode electrode 232 via the cathode protection layer 233. Fig. Figure 4B is a top view of the first touch-sensitive layer, the second touch-sensitive layer, and the organic light-emitting layer in Fig. 4A. The second touch-sensitive electrode (in Fig. 4B (not shown) contains, as in Fig. 4B shows at least one second touch-sensitive partial electrode 251a, and a plurality of second touch-sensitive electrodes form the second touch-sensitive layer (in Fig. 4B not shown), wherein the second touch-sensitive partial electrode 251a is located on the first touch-sensitive layer and between the first substrate 21 and the second substrate 22, and is electrically insulated from the first touch-sensitive layer by a first insulating layer 28, and a perpendicular projection of the second touch-sensitive partial electrode 251a is located on the organic light-emitting layer 23 between two adjacent cathode electrodes 232 oriented in a direction Y. By placing the second touch-sensitive layer between the first substrate and the second substrate,the second touch-sensitive layer and the first touch-sensitive layer are arranged in different layers and the perpendicular projection of the second touch-sensitive partial electrode 251a in the second touch-sensitive layer on the organic light emission layer 23 is arranged between two adjacent cathode electrodes 232 oriented in the direction Y, a cathode layer is offset relative to the second touch-sensitive layer,This eliminates a coupled parasitic capacitance between the cathode layer and the first touch-sensitive layer, and reduces electromagnetic interference between the second touch-sensitive layer and the cathode electrode 232 compared to the related technique, thereby further improving the display and touch control functionality. Furthermore, both the second touch-sensitive layer and the organic light-emitting layer can be formed using a vapor deposition process with a vapor deposition mask, further reducing manufacturing processes and production costs compared to forming the second touch-sensitive layer using a photomask.

[0030] The in Fig. 4A and Fig. The structure shown in Figure 4B is an example where the second touch-sensitive layer 25 is located between the first substrate 21 and the second substrate 22, and the second touch-sensitive layer 25 and the first touch-sensitive layer are on different layers. In other examples, the first touch-sensitive layer and the second touch-sensitive layer can also be located at any position between the first substrate and the second substrate, provided that the first touch-sensitive layer and the second touch-sensitive layer are not on the same layer. For example, as in Fig. Figure 4C shows the first touch-sensitive partial electrode 24, which forms the first touch-sensitive layer, on the cathode protection layer 233 of the organic light emission layer 23. A projection of the first touch-sensitive partial electrode 24 on the organic light emission layer 23 is located between two adjacent cathode electrodes 232, which are aligned along a direction X, and the first touch-sensitive partial electrode 24 is electrically isolated from the cathode electrode 232 via the cathode protection layer 233. Fig. 4D is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 4C, where, as in Fig. 4D shown, a second touch-sensitive electrode (in Fig. 4D not shown) contains at least one second touch-sensitive partial electrode 251a and a plurality of second touch-sensitive electrodes a second touch-sensitive layer (in Fig. (4D not shown) forms, wherein the second touch-sensitive partial electrode 251a is located on the second substrate 22, and is on the same layer as pixel 231 of the organic light emission layer 23, and a projection of the second touch-sensitive partial electrode 251a on the organic light emission layer 23 is located between two adjacent cathode electrodes 232, which are aligned along a direction Y. In a Fig. In the other case shown in 4E, the first touch-sensitive partial electrode 24, which forms the first touch-sensitive layer, is located on the same layer as the cathode electrodes 232, the first touch-sensitive partial electrode 24 is located between two adjacent cathode electrodes 232 which are aligned along an axis X, and it is located on an organic film 261 between two adjacent pixels 231, and the first touch-sensitive partial electrode 21 is electrically isolated from the cathode electrode 232. Fig. 4F is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 4E, where, as in Fig. 4F shows a second touch-sensitive electrode (in Fig. 4F not shown) contains at least one second touch-sensitive partial electrode 251a and a plurality of second touch-sensitive electrodes a second touch-sensitive layer (in Fig. 4F not shown) forms, wherein the second touch-sensitive partial electrode 251a is located on the cathode electrode 232, a projection of the second touch-sensitive partial electrode 251 is located on the organic light emission layer 23 between two adjacent cathode electrodes 232 which are aligned along a direction Y, and the second touch-sensitive partial electrode 251a is electrically insulated from the first touch-sensitive partial electrode 24 and the cathode electrode 232 via the cathode protective layer.

[0031] Besides the case in which the second touch-sensitive layer and the first touch-sensitive layer are located on different layers, the second touch-sensitive layer and the first touch-sensitive layer can also be located on the same layer. The first touch-sensitive partial electrode 24, which forms the first touch-sensitive layer, is located, as shown in Fig. 5A shown, on the cathode protection layer 233 of the organic light emission layer 23, and a projection of the first touch-sensitive partial electrodes 24 on the organic light emission layer 23 is located between two adjacent cathode electrodes 232, which are aligned along a direction X. Fig. 5B is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 5A, where, as in Fig. 5B shows a second touch-sensitive electrode (in Fig. 5B not shown) contains at least one second touch-sensitive partial electrode 251a and a plurality of second touch-sensitive electrodes a second touch-sensitive layer (in Fig. 5B not shown) forms, wherein the second touch-sensitive partial electrode 251a and the first touch-sensitive partial electrode 24 are located on the same layer and both are located on the cathode protection layer 233 of the organic light emission layer 23, and a projection of the second touch-sensitive partial electrode 251a on the organic light emission layer 23 is located between two adjacent cathode electrodes 232; which are aligned along a direction Y. Fig. 5C is a schematic cross-sectional representation of the first touch-sensitive layer, the second touch-sensitive layer, and the organic light-emitting layer in Fig. 5B in one direction B1-B2, wherein, as in Fig. 5C shows that the first touch-sensitive partial electrode 24 intersects the second touch-sensitive partial electrode 251a and is located in the same layer as the second touch-sensitive partial electrode 251a, each second touch-sensitive partial electrode 251a is divided into a plurality of segments, the segments of each second touch-sensitive partial electrode 251a being electrically connected via bridges 253, and the second touch-sensitive partial electrode 251a being electrically insulated from the first touch-sensitive partial electrode 24 by a second insulating layer 254. When the second touch-sensitive layer is arranged between the first substrate and the second substrate,The second touch-sensitive layer and the first touch-sensitive layer are arranged in the same layer, and the projection of the second touch-sensitive partial electrode 251a on the second touch-sensitive layer on the organic light emission layer 23 is arranged between two adjacent cathode electrodes 232 oriented in a direction Y, thus offsetting a cathode layer relative to the second touch-sensitive layer, thereby eliminating a coupled parasitic capacitance between the cathode layer and the first touch-sensitive layer and reducing electromagnetic interference between the second touch-sensitive layer and the cathode electrode 232 compared to the related technique.so that the display and touch control effects can be further improved. Furthermore, the second touch-sensitive layer and the organic light-emitting layer can be formed using a vapor deposition mask, thus further reducing manufacturing processes and production costs compared to forming the second touch-sensitive layer using a photomask.

[0032] The in Fig. The structure shown in Figures 5A to 5C is an example where the second touch-sensitive layer 25 is located between the first substrate 21 and the second substrate 22, and the second touch-sensitive layer 25 and the first touch-sensitive layer are located on the same layer. In another example, as shown in Fig. 5D shows the first touch-sensitive partial electrode 24, which forms the first touch-sensitive layer, on the second substrate 22 and is located on the same layer as pixel 231 of the organic light emission layer 23, and is a projection of the first touch-sensitive partial electrode 24 on the organic light emission layer 23 between two adjacent cathode electrodes 232, which are aligned along a direction X. Fig. 5E is a top view of a first touch-sensitive layer, a second touch-sensitive layer, and an organic light-emitting layer in Fig. 5D, where, as in Fig. 5E showed a second touch-sensitive electrode (in Fig. 5E not shown) contains at least one second touch-sensitive partial electrode 251a and a plurality of second touch-sensitive electrodes a second touch-sensitive layer (in Fig. 5E not shown) forms, wherein the second touch-sensitive partial electrode 251a is located on the same layer as pixel 231 of the organic light emission layer 23, i.e., the second touch-sensitive partial electrode 251a and the first touch-sensitive partial electrode 24 are located on the same layer, and a projection of the second touch-sensitive partial electrode 251a on the organic light emission layer 23 is located between two adjacent cathode electrodes 232 that are aligned along a direction Y. Fig. 5F is a schematic cross-sectional representation of the first touch-sensitive layer, the second touch-sensitive layer, and the organic light-emitting layer in Fig. 5E in one direction C1-C2, wherein, as in Fig. 5F shown, since the first touch-sensitive partial electrode 24 crosses the second touch-sensitive partial electrode 251a and is located in the same layer as the second touch-sensitive partial electrode 251a, each second touch-sensitive partial electrode 251a is divided into a plurality of segments, the segments of each second touch-sensitive partial electrode 251a being electrically connected via bridges 253, and the second touch-sensitive partial electrode 251a being electrically insulated from the first touch-sensitive partial electrode 24 via a second insulating layer 254.

[0033] In the embodiments described above, the first substrate 21 can consist of a cover lens or cover glass, and the second substrate 22 can be an array or matrix substrate.

[0034] In the embodiments described above, a metallic material or a transparent conductive material can preferably be used for the first touch-sensitive electrode on the first touch-sensitive layer and for the second touch-sensitive electrode on the second touch-sensitive layer, wherein the transparent conductive material can be any material or a combination of indium tin oxide (ITO), indium zinc oxide (IZO), or indium gallium zinc oxide (IGZO). Furthermore, the material of the first touch-sensitive electrode on the first touch-sensitive layer can be a metallic material. Since the conductivity of metal produced using a vapor deposition process is lower than that of the transparent conductive material, the first touch-sensitive layer produced with metallic material provides better touch control.

[0035] Furthermore, according to embodiments of the present disclosure, a method for manufacturing a touch-sensitive screen is provided. Fig. Figure 6 is a schematic flowchart of a method for manufacturing a touch-sensitive screen created using embodiments of the present invention. The method for manufacturing the touch-sensitive screen comprises, as described in Figure 6, the following steps: Fig. As can be seen in 6A, the following steps are listed below.

[0036] Step 301: Providing a second substrate and forming an organic light emission layer on the second substrate, wherein the organic light emission layer contains at least one cathode layer formed by a plurality of strip-shaped cathode electrodes.

[0037] Step 302: Forming a first touch-sensitive layer, containing a plurality of first touch-sensitive electrodes, on the second substrate. The first touch-sensitive electrode contains at least one first touch-sensitive partial electrode, a projection of which is located on the organic light-emission layer between two adjacent cathode electrodes.

[0038] Furthermore, in some embodiments, the organic light-emitting layer contains a pixel layer and a cathode protection layer. The pixel layer is formed between the cathode layer and the second substrate and contains a multitude of pixels located beneath the cathode electrodes, while the cathode protection layer is planar and forms on top of the cathode layer.

[0039] In some embodiments, both the organic light-emitting layer and the first touch-sensitive layer are preferably formed using the so-called fine metal mask. Manufacturing processes and production costs can be reduced with the technical solutions of the present disclosure compared to the first touch-sensitive layer in the related technique, which requires the use of a photomask and a photolithographic process.

[0040] It should be noted that the touch-sensitive screen may further comprise a first substrate and a second touch-sensitive layer adjacent to a structure fabricated by the steps listed above, and that the second touch-sensitive layer may be located on one side of the first substrate or between the first and second substrates, provided that a touch control function can be achieved by means of the second and first touch-sensitive layers. Embodiments of a method for fabricating the second touch-sensitive layer are described below with reference to Fig. 6A is shown.

[0041] In some embodiments, as described with reference to Fig. Figure 6A shows that the procedure for manufacturing the second touch-sensitive layer in a touch-sensitive screen includes the steps listed below.

[0042] Step 3031: Provide a first substrate that is positioned opposite a second substrate.

[0043] Step 3032: Forming a plurality of second touch-sensitive electrodes on a surface of one side of the first substrate that is away from the second substrate.

[0044] Step 3033: Forming a first passivation layer on the second touch-sensitive electrodes, forming a second touch-sensitive layer with the first passivation layer, wherein the first passivation layer has a planar shape or forms a plurality of first passivation units on the second touch-sensitive electrodes.

[0045] To enable better control of the box thickness during box alignment and bonding of the first and second substrates, to better protect the organic light emission layer, and to further improve the touch control effect of the touch-sensitive screen, the method for manufacturing the touch-sensitive screen may further include forming a first dielectric layer between the first touch-sensitive layer and the first substrate.

[0046] Steps 3031 to 3033 produce the second touch-sensitive layer on a surface of one side of the first substrate that is away from the second substrate. Furthermore, the second touch-sensitive layer can also be produced between the first and second substrates. As described in Fig. As can be seen in Figure 6C, a method for manufacturing the touch-sensitive screen, in which the second touch-sensitive layer can also be arranged between the two substrates, may include the steps listed below.

[0047] Step 3041: Provide the first substrate, which is positioned opposite the second substrate.

[0048] Step 3042: Forming the second touch-sensitive layer, which contains a plurality of second touch-sensitive electrodes, between the first substrate and the second substrate, wherein the first touch-sensitive layer is electrically insulated from the second touch-sensitive layer.

[0049] Furthermore, the second touch-sensitive electrode contains at least one touch-sensitive partial electrode, wherein a projection of the same is located on the organic light emission layer between two adjacent cathode electrodes.

[0050] Furthermore, a display device is created using embodiments of the present disclosure. Fig. 7 is a schematic representation showing the construction of a display device created with embodiments of the present disclosure, wherein, as with reference to Fig.As shown in Figure 7, a display device 40 includes a touch-sensitive screen 41 and may also include a control circuit and other components that enable the normal operation of the display device 40. The touch-sensitive screen 41 is a touch-sensitive screen as described in the embodiments listed above. The display device 40 can be a mobile phone, a tablet computer, electronic paper, or a digital photo frame.

[0051] With the touch-sensitive screen, the method for manufacturing it, and the display device created with embodiments of the present disclosure, if at least the first touch-sensitive layer, which enables the touch control function, is arranged between the first substrate and the second substrate, the cathode electrode is arranged in a strip shape, and the projection of the first touch-sensitive partial electrode on the first touch-sensitive layer onto the organic light emission layer is arranged between two adjacent cathode electrodes, at least electromagnetic interference between the first touch-sensitive layer and the cathode electrode can be reduced, so that the display effect and touch control effect can be improved.Furthermore, the first touch-sensitive layer and the organic light emission layer can be formed using a vapor deposition process, since the organic light emission layer is also positioned between the first substrate and the second substrate, thus reducing not only the manufacturing processes but also the production costs.

[0052] It should be noted that the embodiments listed above are merely some examples and technical principles applied in the present disclosure. Those skilled in the art know that the present disclosure is not limited to the specific embodiments described herein and that various obvious modifications, adaptations, and substitutions can be made by those skilled in the art without deviating from the scope of protection of the present disclosure. Therefore, although the present disclosure is described in detail with respect to the embodiments listed above, the present disclosure is not limited to the embodiments listed above; further equivalent embodiments can be incorporated without deviating from the concept of the present disclosure, and the scope of protection of the present disclosure is determined by the scope of protection of the appended claims.

[0053] The exemplary embodiments described above can be modified and supplemented in various ways without altering the scope of protection of this disclosure. For example, although the embodiments described above relate to specific features, the scope of protection of this disclosure also includes embodiments that have other combinations of features and embodiments that do not include all of the described features. Accordingly, the scope of protection of this disclosure is intended to include all such alternatives, modifications, and variants that fall within the scope of protection of the claims, together with all their equivalents.

Claims

[1] Touch-sensitive screen that includes: a first substrate (21) and a second substrate (22) which are arranged opposite each other; an organic light emission layer (23) located between the first substrate (21) and the second substrate (22), wherein the organic light emission layer (23) comprises at least one cathode layer and a cathode protection layer (233), and the cathode layer comprises a plurality of block-shaped cathode electrodes (232) arranged in rows and columns and covered by the cathode protection layer (233); a first touch-sensitive layer (241) located on the cathode protective layer (233) and comprising a plurality of first touch-sensitive electrodes (172), each of the first touch-sensitive electrodes (172) comprising at least one first touch-sensitive partial electrode (24); and a second touch-sensitive layer (25) comprising a plurality of second touch-sensitive electrodes (251), each of the plurality of second touch-sensitive electrodes (251) comprising at least one second touch-sensitive partial electrode (251a); wherein the at least one second touch-sensitive partial electrode (251a) extends in a first direction, the at least one first touch-sensitive partial electrode (24) extends in a second direction and the first direction is perpendicular to the second direction, and a projection of the first touch-sensitive partial electrode (24) on the organic light emission layer (23) is located between two adjacent slits of cathode electrodes and a projection of the second touch-sensitive partial electrode (251a) on the organic light emission layer (23) is located between two adjacent rows of cathode electrodes. [2] Touch-sensitive screen according to claim 1, wherein the second touch-sensitive layer (25) is located on a surface of the first substrate (21) that is away from the second substrate (22). [3] Touch-sensitive screen according to claim 1, wherein the second touch-sensitive layer (25) is located between the first substrate (11) and the second substrate (12) and the second touch-sensitive layer (25) and the first touch-sensitive layer (241) are located on different layers and are electrically insulated from each other. [4] Touch-sensitive screen according to claim 1, wherein the second touch-sensitive layer (25) and the first touch-sensitive layer (241) are located on the same layer and are electrically insulated from each other; and each of the at least one second touch-sensitive partial electrode (251a) is divided into a plurality of segments which are electrically connected via bridges (253). [5] Touch-sensitive screen according to claim 1, wherein the organic light emission layer (23) further comprises a pixel layer (2311) and the pixel layer (2311) is located between the cathode layer and the second substrate (22); the pixel layer (2311) further comprises a plurality of pixels (231) located beneath the cathode electrodes (232); the cathode protective layer (233) has a flat shape. [6] Display device comprising a touch-sensitive screen according to claims 1-5. [7] Method for manufacturing a touch-sensitive screen comprising: Forming an organic light emission layer (23) on a second substrate (22), wherein the organic light emission layer (23) comprises at least one cathode layer and a cathode protection layer (233), and the cathode layer comprises a plurality of block-shaped cathode electrodes (232) arranged in rows and columns and covered by the cathode protection layer (233); Forming a first touch-sensitive layer (241) comprising a plurality of first touch-sensitive electrodes (172) on the cathode protective layer (233), wherein at least one of the first touch-sensitive electrodes comprises at least one first touch-sensitive partial electrode (24); Providing a first substrate (21) which is arranged opposite the second substrate (22); and Forming a second touch-sensitive layer (25), wherein the second touch-sensitive layer (25) comprises a plurality of second touch-sensitive electrodes (251) and each of the plurality of second touch-sensitive electrodes (251) comprises at least one second touch-sensitive partial electrode (251a); wherein the at least one second touch-sensitive partial electrode (251a) extends in a first direction, the at least one first touch-sensitive partial electrode (24) extends in a second direction and the first direction is perpendicular to the second direction, and a projection of the first touch-sensitive partial electrode (24) on the organic light emission layer (23) is located between two adjacent slits of cathode electrodes and a projection of the second touch-sensitive partial electrode (251a) on the organic light emission layer (23) is located between two adjacent rows of cathode electrodes. [8] Method for manufacturing the touch-sensitive screen according to claim 7, wherein the second touch-sensitive layer (25) is formed on a surface of the first substrate (21) that is away from the second substrate (22), and the manufacturing method further comprises: Forming a first passivation layer (252) on the second touch-sensitive layer (25), wherein the first passivation layer (252) has a planar shape or comprises a plurality of first passivation units (252a) on the second touch-sensitive electrodes (251). [9] Method for manufacturing the touch-sensitive screen according to claim 7, wherein the organic light emission layer (23) further comprises a pixel layer (2311), the pixel layer (2311) being formed between the cathode layer and the second substrate (22) and comprising a plurality of pixels (231) located under the cathode electrodes (232), and the cathode protection layer (233) having a planar shape. [10] Method for manufacturing the touch-sensitive screen according to claim 7, wherein the second touch-sensitive layer (25) is formed between the first substrate (21) and the second substrate (22) and is electrically insulated from the first touch-sensitive layer by a first insulating layer (28).

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