A touch display panel and a manufacturing method thereof

Abstract

The present invention provides a touch display panel and a preparation method thereof. The touch display panel includes: a circuit board, which includes a first sub-circuit board and a second sub-circuit board adjacent to the first sub-circuit board, and the first sub-circuit board is a flexible circuit board; a light-emitting layer, which is disposed on one surface of the first sub-circuit board; a touch sensing layer, which is disposed on the surface of the first sub-circuit board facing away from the light-emitting layer; a driving unit, which is disposed on one surface of the second sub-circuit board, and the touch sensing layer and the light-emitting layer are electrically connected to the driving unit respectively. The touch display panel not only has the capabilities of touch and display, but also reduces the electrical interference that the electronic components in the touch display panel may cause to the touch sensing layer, which is beneficial to ensuring the touch effect of the touch sensing layer. At the same time, the touch display area has the characteristics of being thin, light and bendable, expanding the application scenarios of the touch display panel.

Description

Technical Field

[0001] The present invention relates to the field of touch technology, and particularly to a touch display panel and a preparation method thereof. Background Art

[0002] In recent years, touch sensing technology has developed rapidly, and many electronic products with touch functions have been successively launched. The above-mentioned electronic products mainly endow the original display screen with touch sensing function to obtain a touch display panel. According to the different structures of the touch display panel, it can generally be divided into an external type and an inlaid type touch display panel. Among them, the external type touch display panel is composed of a touch panel and a display panel, and the inlaid type touch display panel is provided with a touch sensing device inside the display panel. The touch sensing device includes a touch driving chip and a touch sensing layer.

[0003] However, the electronic components in the conventional inlaid touch display panel will cause great electrical interference to the touch sensing layer, thus affecting the touch effect of the touch sensing layer. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the electronic components in the existing inlaid touch display panel will cause great electrical interference to the touch sensing layer, so as to provide a touch display panel and a preparation method thereof.

[0005] The present invention provides a touch display panel, including: a circuit board, the circuit board includes a first sub-circuit board and a second sub-circuit board adjacent to the first sub-circuit board, and the first sub-circuit board is a flexible circuit board; a light emitting layer, the light emitting layer is disposed on one side surface of the first sub-circuit board; a touch sensing layer, the touch sensing layer is disposed on the side surface of the first sub-circuit board facing away from the light emitting layer; a driving unit, the driving unit is disposed on one side surface of the second sub-circuit board, and the touch sensing layer and the light emitting layer are electrically connected to the driving unit respectively.

[0006] Optionally, the light emitting layer includes a plurality of light emitting elements arranged in an array.

[0007] Optionally, the light emitting element is an LED light emitting element.

[0008] Optionally, the touch sensing layer includes a plurality of touch units arranged at intervals in a first direction, each touch unit includes a plurality of sensing units arranged in a second direction, and the first direction is perpendicular to the second direction; each sensing unit includes a main sensing line, and the main sensing lines in adjacent sensing units in any one touch unit are connected.

[0009] Optionally, the touch sensing layer further includes a secondary sensing line connected to the main sensing channel, and the secondary sensing lines in adjacent sensing units in any one touch unit are spaced apart.

[0010] Optionally, the shape of the secondary induction line includes a T shape.

[0011] Optionally, the induction unit includes two secondary induction lines, the two secondary induction lines are respectively located on both sides of the main induction line, and the secondary induction lines are arranged oppositely; alternatively, the induction unit includes one secondary induction line.

[0012] Optionally, the material of the touch induction layer includes indium tin oxide or nano silver.

[0013] Optionally, the secondary induction line and the main induction line form an enclosed area; the light-emitting layer includes a plurality of light-emitting elements arranged in an array; the orthographic projection of at least one light-emitting element on the first sub-circuit board is located within the orthographic projection of the enclosed area on the first sub-circuit board; the orthographic projection of at least one light-emitting element on the first sub-circuit board is located within the orthographic projection of the adjacent induction unit in the first direction on the first sub-circuit board.

[0014] Optionally, the orthographic projection of the touch induction layer on the first sub-circuit board does not coincide with the orthographic projection of the light-emitting element on the first sub-circuit board.

[0015] Optionally, a first circuit is provided on one side surface of the first sub-circuit board, the first circuit is located on the same side as the light-emitting layer and is electrically connected to the light-emitting layer; the driving unit and the touch induction layer are located on the same side, a second circuit is provided in the second sub-circuit board, and the second circuit connects the first circuit and the driving unit; a third circuit is provided on the side surface of the second sub-circuit board facing the driving unit, and the third circuit connects the touch induction layer and the driving unit.

[0016] Optionally, the circuit board includes a rigid-flexible board, and the second sub-circuit board is a rigid circuit board.

[0017] Optionally, the touch display board further includes: an adhesive layer, the adhesive layer is located on the side surface of the light-emitting layer facing away from the first sub-circuit board; a transparent flexible protective layer, the transparent flexible protective layer is located on the side surface of the adhesive layer facing away from the light-emitting layer; a flexible substrate, the flexible substrate is located on the side of the touch induction layer facing away from the first sub-circuit board.

[0018] The present invention also provides a method for manufacturing a touch display panel, comprising: providing a circuit board, the circuit board including a first sub-circuit board and a second sub-circuit board adjacent to the first sub-circuit board, the first sub-circuit board being a flexible circuit board; forming a light-emitting layer on one side surface of the first sub-circuit board; forming a touch sensing layer on the side surface of the first sub-circuit board facing away from the light-emitting layer; providing a driving unit on one side surface of the second sub-circuit board, the touch sensing layer and the light-emitting layer being electrically connected to the driving unit respectively.

[0019] Optionally, a transfer process is used to form the light-emitting layer on one side surface of the first sub-circuit board.

[0020] Optionally, a printing process or a laser etching process is used to form the touch sensing layer on the side surface of the first sub-circuit board facing away from the light-emitting layer.

[0021] Optionally, a pasting process is used to provide the driving unit on one side surface of the second sub-circuit board.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. For the touch display panel provided by the present invention, the light-emitting layer is used to display graphics, and the surface of the light-emitting layer facing away from the first sub-circuit board is the light-emitting surface. Since the first sub-circuit board is a flexible circuit board, when stress is applied to the light-emitting surface of the light-emitting layer, the first sub-circuit board will deform accordingly, so that the touch sensing layer can sense the stress, and then the touch function is exerted. This also makes the touch display area of the touch display panel have the characteristics of being thin, light and bendable, expanding the application scenarios of the touch display panel. By arranging the light-emitting layer on both sides of the first sub-circuit board respectively, the light-emitting layer and the touch sensing layer are separated by the first sub-circuit board. On the one hand, it avoids the electrical interference of the electronic components in the light-emitting layer on the touch sensing layer, and on the other hand, it is beneficial to improve the display effect of the touch display panel; by arranging the touch sensing layer on the first sub-circuit board and arranging the driving unit on the second sub-circuit board, the distance between the touch sensing layer and the driving unit is increased, thereby reducing the electrical interference of the driving unit on the touch sensing layer. To sum up, the electrical interference of the electronic components in the above touch display panel on the touch sensing layer is relatively small, which is beneficial to ensuring the touch effect of the touch sensing layer and also beneficial to improving the display effect of the touch display panel.

[0024] 2. For the touch display panel provided by the present invention, the light-emitting layer includes a plurality of light-emitting elements arranged in an array, and the light emission and the brightness and darkness of each light-emitting element can be controlled independently. Therefore, the touch display panel can display different patterns by controlling the light-emitting elements at different positions, which is beneficial to improving the functional expandability of the touch display panel.

[0025] 3. The touch display panel provided by the present invention, wherein the sensing unit includes main sensing lines and secondary sensing lines connected to the main sensing channels. The arrangement of the secondary sensing lines increases the density of the sensing lines in the touch sensing layer, thereby enhancing the touch sensitivity of the touch display panel.

[0026] 4. The touch display panel provided by the present invention, wherein the orthographic projection of the touch sensing layer on the first sub-circuit board does not coincide with the orthographic projection of the light-emitting element on the first sub-circuit board, that is, the main sensing lines and / or the secondary sensing lines are arranged in an interleaved manner with the light-emitting element, which plays a strengthening role in avoiding electromagnetic interference of the light-emitting element on the touch sensing layer and effectively ensures the touch effect of the touch sensing layer.

[0027] 5. The touch display panel provided by the present invention, wherein the circuit board includes a flexible-rigid combination board, and the second sub-circuit board is a rigid circuit board. On the one hand, it ensures the thinness, lightness and bendability of the touch display area of the touch display panel, and on the other hand, it ensures that the driving unit can be stably fixed on the circuit board.

[0028] 6. The touch display panel provided by the present invention, by providing a transparent flexible protective layer on the side of the light-emitting layer facing away from the first sub-circuit board, not only can protect the light-emitting layer without affecting the light emission of the light-emitting layer, but also ensures the thinness, lightness and bendability of the touch display area of the touch display panel; by providing a flexible substrate on the side of the touch sensing layer facing away from the first sub-circuit board, not only can protect the touch sensing layer, but also ensures the thinness, lightness and bendability of the touch display area of the touch display panel.

[0029] 7. The manufacturing method of the touch display panel provided by the present invention, by forming a light-emitting layer on one side surface of the first sub-circuit board, forming a touch sensing layer on the side surface of the first sub-circuit board facing away from the light-emitting layer, arranging a driving unit on one side surface of the second sub-circuit board, and defining the first sub-circuit board as a flexible circuit board, the touch display panel not only has touch and display capabilities, but also reduces the electrical interference of the electronic components in the touch display panel on the touch sensing layer, which is beneficial to ensuring the touch effect of the touch sensing layer. At the same time, the touch display area has the characteristics of thinness, lightness and bendability, expanding the application scenarios of the touch display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of the touch display panel of the present invention;

[0032] Figure 2 is Figure 1 a schematic structural diagram of a touch sensing layer shown in the figure;

[0033] Figure 3 is Figure 1 a schematic diagram of the positions of the touch sensing layer and the light emitting element shown in the figure;

[0034] Figure 4 is Figure 3 a schematic structural diagram of the area within the dashed box in

[0035] Figure 5 is Figure 1 a schematic partial structural diagram of another touch sensing layer shown in the figure;

[0036] Description of the reference numerals:

[0037] 1 - circuit board; 11 - first sub - circuit board; 12 - second sub - circuit board; 2 - light emitting layer; 21 - light emitting element; 3 - touch sensing layer; 31 - touch unit; 312 - main sensing line; 313 - secondary sensing line; 4 - driving unit; 5 - adhesive layer; 6 - transparent flexible protective layer; 7 - flexible substrate. Detailed implementation manners

[0038] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] Refer to Figure 1, this embodiment provides a touch display panel, including: a circuit board 1, the circuit board 1 includes a first sub-circuit board 11 and a second sub-circuit board 12 adjacent to the first sub-circuit board 11, and the first sub-circuit board 11 is a flexible circuit board; a light-emitting layer 2, the light-emitting layer 2 is disposed on one side surface of the first sub-circuit board 11; a touch sensing layer 3, the touch sensing layer 3 is disposed on the side surface of the first sub-circuit board 11 facing away from the light-emitting layer 2; a driving unit 4, the driving unit 4 is disposed on one side surface of the second sub-circuit board 12, and the touch sensing layer 3 and the light-emitting layer 2 are electrically connected to the driving unit 4 respectively.

[0041] In the above touch display panel, the light-emitting layer 2 is used to display a pattern, and the surface of the light-emitting layer 2 facing away from the first sub-circuit board 11 is the light-emitting surface. Since the first sub-circuit board 11 is a flexible circuit board, when stress is applied to the light-emitting surface of the light-emitting layer 2, the first sub-circuit board 11 will deform accordingly, so that the touch sensing layer 3 senses the stress, and then the touch function is exerted. This also makes the touch display area of the touch display panel thin, light and bendable, expanding the application scenarios of the touch display panel. By disposing the light-emitting layer 2 on both sides of the first sub-circuit board 11 respectively, the light-emitting layer 2 and the touch sensing layer 3 are separated by the first sub-circuit board 11. On the one hand, it avoids the electrical interference of the electronic components in the light-emitting layer 2 to the touch sensing layer 3, and on the other hand, it is beneficial to improve the display effect of the touch display panel; by disposing the touch sensing layer 3 on the first sub-circuit board 11 and disposing the driving unit 4 on the second sub-circuit board 12, the distance between the touch sensing layer 3 and the driving unit 4 is increased, thereby reducing the electrical interference of the driving unit 4 to the touch sensing layer 3. In summary, the electrical interference of the electronic components in the above touch display panel to the touch sensing layer 3 is relatively small, which is beneficial to ensuring the touch effect of the touch sensing layer 3 and also beneficial to improving the display effect of the touch display panel.

[0042] In this embodiment, refer to Figure 3 , the light-emitting layer 2 includes a plurality of light-emitting elements 21 arranged in an array. The light emission and the brightness and darkness of each light-emitting element 21 can be controlled independently. Therefore, the touch display panel can display different patterns by controlling the light-emitting elements 21 at different positions, which is beneficial to improving the functional expandability of the touch display panel. Specifically, after controlling the light-on and light-off of the light-emitting elements 21 to obtain the required display pattern, the touch function of the above display pattern area can be adjusted by adjusting the touch capabilities at different positions in the touch sensing layer 3.

[0043] In this embodiment, refer to Figure 2, the touch sensing layer 3 includes a plurality of touch units 31 arranged at intervals in a first direction, each touch unit 31 includes a plurality of sensing units arranged in a second direction, and the first direction is perpendicular to the second direction; each sensing unit includes a main sensing line 312, and the main sensing lines 312 in adjacent sensing units in any one touch unit 31 are connected.

[0044] Further, referring to Figure 2 , the touch sensing layer 3 further includes secondary sensing lines 313 connected to the main sensing channels, and the secondary sensing lines 313 in adjacent sensing units in any one touch unit 31 are spaced apart. The arrangement of the secondary sensing lines 313 increases the density of the sensing lines in the touch sensing layer 3, thereby increasing the touch sensitivity of the touch display panel. Specifically, the shape of the secondary sensing line 313 includes, but is not limited to, a T shape.

[0045] Further, as Figure 2 shown, each sensing unit includes two secondary sensing lines 313, and the two secondary sensing lines 313 are respectively located on both sides of the main sensing line 312; or, as Figure 5 shown, each sensing unit includes one secondary sensing line 313.

[0046] In one embodiment, the orthographic projection of the touch sensing layer 3 on the first sub-circuit board 11 does not coincide with the orthographic projection of the light emitting element 21 on the first sub-circuit board 11, that is, the main sensing line 312 and / or the secondary sensing line 313 are arranged in an interleaved manner with the light emitting element 21. On the one hand, it can avoid electromagnetic interference of the light emitting element on the touch sensing layer and effectively ensure the touch effect of the touch sensing layer; on the other hand, since a plurality of light emitting elements 21 are arranged in an array, the arrangement of the main sensing line 312 and / or the secondary sensing line 313 has a certain regularity, which makes the manufacturing process of the touch sensing layer 3 simpler and is conducive to improving the manufacturing efficiency of the touch sensing layer 3; in addition, it is also conducive to ensuring the brightness uniformity of the touch display panel. Specifically, the secondary sensing line 313 and the main sensing line 312 form an enclosed area, and the orthographic projection of at least one light emitting element 21 on the first sub-circuit board 11 is located within the orthographic projection of the enclosed area on the first sub-circuit board 11, and the orthographic projection of at least one light emitting element 21 on the first sub-circuit board 11 is located within the orthographic projection of the adjacent sensing units in the first direction on the first sub-circuit board 11.

[0047] Exemplarily, as Figure 3 - Figure 4As shown, the induction unit includes two secondary induction lines 313. The two secondary induction lines 313 are respectively located on both sides of the main induction line 312, and the secondary induction lines 313 are arranged oppositely. The shape of the secondary induction line 313 is T-shaped. The enclosed area formed by each secondary induction line 313 and the main induction line 312 includes two sub-enclosed areas. The orthographic projection of each sub-enclosed area on the first sub-circuit board 11 includes the orthographic projection of a light-emitting component 21 on the first sub-circuit board 11. The orthographic projection of adjacent sub-enclosed areas in the first direction on the first sub-circuit board 11 includes the orthographic projection of a light-emitting component 21 on the first sub-circuit board 11. Therefore, the distance between the central axes of adjacent induction units in the first direction is greater than the width of 3 light-emitting components 21, and the distance between the central axes of adjacent induction units in the second direction is greater than the width of 2 light-emitting components 21. That is, the distance between the central axes of adjacent induction units in the first direction is greater than 4 mm, and the distance between the central axes of adjacent induction units in the second direction is greater than 4 mm. It should be understood that for the convenience of understanding the positional relationship between the main induction line 312 and / or the secondary induction line 313 and the light-emitting component 21, Figure 3 and Figure 4 while showing the structure of the induction unit, the position of the light-emitting component 21 is also shown, Figure 3 and Figure 4 in Figure 4 , the light-emitting component 21 and the induction unit are respectively located on opposite surfaces of the circuit board, Figure 4 what is shown is Figure 3 an enlarged view of the structure in the dashed box in Figure 3 .

[0048] Exemplarily, as Figure 5 shown, the induction unit includes one secondary induction line 313. The shape of the secondary induction line 313 is T-shaped. Among several induction units of the touch induction layer 3, the secondary induction lines 313 are all located on the same side of the main induction line 312. The enclosed area formed by each secondary induction line 313 and the main induction line 312 includes two sub-enclosed areas. The orthographic projection of each sub-enclosed area on the first sub-circuit board 11 includes the orthographic projection of a light-emitting component 21 on the first sub-circuit board 11. The orthographic projection of the area between each sub-enclosed area and its adjacent main induction line 312 in the first direction on the first sub-circuit board 11 includes the orthographic projection of a light-emitting component 21 on the first sub-circuit board 11. Therefore, the distance between the central axes of adjacent induction units in the first direction is greater than the width of 2 light-emitting components 21, and the distance between the central axes of adjacent induction units in the second direction is greater than the width of 2 light-emitting components 21. Figure 5 It is a partial structural schematic diagram of the touch induction layer. It should be understood that for the convenience of understanding the positional relationship between the main induction line 312 and / or the secondary induction line 313 and the light-emitting component 21, Figure 5 while showing the structure of the induction unit, the position of the light-emitting component 21 is also shown, Figure 5The light-emitting element 21 and the sensing unit are respectively located on opposite surfaces of the circuit board.

[0049] In this embodiment, a first circuit (not shown in the figure) is provided on one side surface of the first sub-circuit board 11. The first circuit is on the same side as the light-emitting layer 2 and is electrically connected to the light-emitting layer 2; the driving unit 4 and the touch sensing layer 3 are on the same side. A second circuit (not shown in the figure) is provided in the second sub-circuit board 12. The second circuit connects the first circuit and the driving unit 4; a third circuit (not shown in the figure) is provided on the side surface of the second sub-circuit board 12 facing the driving unit 4. The third circuit connects the touch sensing layer 3 and the driving unit 4. That is, a plurality of light-emitting elements 21 and the driving unit 4 are connected through the first circuit and the second circuit, and a plurality of main sensing lines 312 and the driving unit 4 are connected through the third circuit.

[0050] Furthermore, the circuit board 1 includes a rigid-flexible board, and the second sub-circuit board 12 is a rigid circuit board in the rigid-flexible board. On the one hand, it ensures the thinness and bendability of the touch display area of the touch display panel, and on the other hand, it ensures that the driving unit 4 can be stably fixed on the circuit board 1.

[0051] In this embodiment, the light-emitting element 21 is an LED light-emitting element, and the LED light-emitting element includes but is not limited to Mini-LED devices; the material of the touch sensing layer 3 includes but is not limited to indium tin oxide or nano silver; the driving unit 4 includes a driving chip.

[0052] In this embodiment, continue to refer to Figure 1 , the touch display panel further includes: an adhesive layer 5, the adhesive layer 5 is located on the side surface of the light-emitting layer 2 facing away from the first sub-circuit board 11; a transparent flexible protective layer 6, the transparent flexible protective layer 6 is located on the side surface of the adhesive layer 5 facing away from the light-emitting layer 2; a flexible substrate 7, the flexible substrate 7 is located on the side of the touch sensing layer 3 facing away from the first sub-circuit board 11. The transparent flexible protective layer 6 can not only protect the light-emitting layer 2 without affecting the light emission of the light-emitting layer 2, but also ensure the thinness and bendability of the touch display area of the touch display panel; the flexible substrate 7 can not only protect the touch sensing layer 3, but also ensure the thinness and bendability of the touch display area of the touch display panel. Specifically, the material of the adhesive layer 5 includes but is not limited to OCA optical glue; the transparent flexible protective layer 6 includes but is not limited to polyimide film; the flexible substrate 7 includes but is not limited to polyethylene naphthalate film.

[0053] This embodiment also provides a method for manufacturing a touch display panel, including: providing a circuit board 1, where the circuit board 1 includes a first sub-circuit board 11 and a second sub-circuit board 12 adjacent to the first sub-circuit board 11, and the first sub-circuit board 11 is a flexible circuit board; forming a light-emitting layer 2 on one side surface of the first sub-circuit board 11; forming a touch sensing layer 3 on the side surface of the first sub-circuit board 11 facing away from the light-emitting layer 2; providing a driving unit 4 on one side surface of the second sub-circuit board 12, and the touch sensing layer 3 and the light-emitting layer 2 are electrically connected to the driving unit 4 respectively.

[0054] In the above method for manufacturing a touch display panel, by forming a light-emitting layer 2 on one side surface of the first sub-circuit board 11, forming a touch sensing layer 3 on the side surface of the first sub-circuit board 11 facing away from the light-emitting layer 2, providing a driving unit 4 on one side surface of the second sub-circuit board 12, and defining the first sub-circuit board 11 as a flexible circuit board, the touch display panel not only has touch and display capabilities, but also reduces the electrical interference that the electronic components in the touch display panel may cause to the touch sensing layer 3, which is beneficial to ensuring the touch effect of the touch sensing layer 3. At the same time, the touch display area has the characteristics of being thin, light and bendable, expanding the application scenarios of the touch display panel.

[0055] In this embodiment, the process of forming the light-emitting layer 2 on one side surface of the first sub-circuit board 11 is a transfer process. Specifically, the steps of the transfer process include: providing an original substrate, where a plurality of light-emitting elements 21 arranged in an array are provided on one side surface of the original substrate; transferring the plurality of light-emitting elements 21 from the original substrate to one side surface of the first sub-circuit board 11 through a laser transfer process; a first circuit corresponding to the light-emitting elements 21 is provided on the surface of the first sub-circuit board 11. After transferring the light-emitting elements 21 to the first sub-circuit board 11, the light-emitting elements 21 are electrically connected to the first circuit.

[0056] In this embodiment, the process of forming the touch sensing layer 3 on the side surface of the first sub-circuit board 11 facing away from the light-emitting layer 2 is a printing process or a laser etching process. Specifically, the steps of the laser etching process include: forming an initial touch sensing layer 3 on the side surface of the first sub-circuit board 11 facing away from the light-emitting layer 2, and performing laser etching on the initial touch sensing layer 3 to obtain the touch sensing layer 3.

[0057] It should be understood that the touch sensing layer 3 can be formed first and then the light-emitting layer 2, or the light-emitting layer 2 can be formed first and then the touch sensing layer 3. Preferably, the touch sensing layer 3 is formed first and then the light-emitting layer 2.

[0058] In this embodiment, the method for manufacturing the touch display panel further includes: forming an adhesive layer 5 on a surface of the light-emitting layer 2 facing away from the first sub-circuit board 11; forming a transparent flexible protective layer 6 on a surface of the adhesive layer 5 facing away from the light-emitting layer 2; and disposing a flexible substrate 7 on a side of the touch sensing layer 3 facing away from the first sub-circuit board 11.

[0059] The working process of the touch display panel provided in this embodiment is as follows: First, power is supplied to the touch sensing layer 3 and the light-emitting layer 2 respectively; subsequently, the touch sensing layer 3 is controlled to enter a debugging state, and the light-emitting layer 2 is controlled to enter an initialization state; subsequently, according to a custom display pattern, some of the light-emitting elements 21 in the light-emitting layer 2 emit light, and some of the light-emitting elements 21 do not emit light; subsequently, according to the custom display pattern, the area of the touch sensing layer 3 corresponding to the display pattern of the light-emitting layer 2 is set as an effective touch area, and other areas of the touch sensing layer 3 are set as invalid touch areas; subsequently, a touch operation is performed according to the display pattern of the light-emitting layer 2.

[0060] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A touch display panel, characterized in that, Comprising: A circuit board, the circuit board includes a first sub-circuit board and a second sub-circuit board adjacent to the first sub-circuit board, the circuit board includes a rigid-flex board, the first sub-circuit board is a flexible circuit board, and the second sub-circuit board is a rigid circuit board; A light-emitting layer, the light-emitting layer is disposed on one surface of the first sub-circuit board, a first circuit is disposed on one surface of the first sub-circuit board, the first circuit is on the same side as the light-emitting layer and is electrically connected to the light-emitting layer, the surface of the light-emitting layer facing away from the first sub-circuit board is the light-emitting surface, when stress is applied to the light-emitting surface of the light-emitting layer, the first sub-circuit board will deform accordingly, so that the touch sensing layer senses the stress, and then the touch function is exerted; A touch sensing layer, the touch sensing layer is disposed on the surface of the first sub-circuit board facing away from the light-emitting layer; A driving unit, the driving unit is disposed on one surface of the second sub-circuit board, the touch sensing layer and the light-emitting layer are respectively electrically connected to the driving unit, the driving unit is on the same side as the touch sensing layer, a second circuit is disposed in the second sub-circuit board, and the second circuit connects the first circuit and the driving unit; a third circuit is disposed on the surface of the second sub-circuit board facing the driving unit, and the third circuit connects the touch sensing layer and the driving unit.

2. The touch display panel according to claim 1, characterized in that, The light-emitting layer includes a plurality of light-emitting elements arranged in an array.

3. The touch display panel according to claim 2, characterized in that, The light-emitting element is an LED light-emitting element.

4. The touch display panel according to claim 1, characterized in that, The touch sensing layer includes a plurality of touch units arranged at intervals in a first direction, and each touch unit includes a plurality of sensing units arranged in a second direction, and the first direction is perpendicular to the second direction; The sensing unit includes a main sensing line, and the main sensing lines in adjacent sensing units in any one touch unit are connected.

5. The touch display panel according to claim 4, characterized in that, The touch sensing layer further includes a secondary sensing line connected to the main sensing line, and the secondary sensing lines in adjacent sensing units in any one touch unit are spaced apart.

6. The touch display panel according to claim 5, characterized in that, The shape of the secondary sensing line includes a T shape.

7. The touch display panel according to claim 5, characterized in that, The sensing unit includes two secondary sensing lines, the two secondary sensing lines are respectively located on both sides of the main sensing line, and the secondary sensing lines are oppositely arranged; or, the sensing unit includes one secondary sensing line.

8. The touch display panel according to claim 1, characterized in that, The material of the touch sensing layer includes indium tin oxide or nano silver.

9. The touch display panel according to claim 5, characterized in that, The secondary sensing line and the main sensing line form an enclosed area; the light-emitting layer includes a plurality of light-emitting elements arranged in an array; The orthographic projection of at least one of the light-emitting elements on the first sub-circuit board is located within the orthographic projection of the enclosed area on the first sub-circuit board; The orthographic projection of at least one of the light-emitting elements on the first sub-circuit board is located within the orthographic projection of the adjacent sensing units in the first direction on the first sub-circuit board.

10. The touch display panel according to claim 2, characterized in that, The orthographic projection of the touch sensing layer on the first sub-circuit board does not coincide with the orthographic projection of the light-emitting element on the first sub-circuit board.

11. The touch display panel according to claim 1, characterized in that, Further comprising: An adhesive layer, the adhesive layer is located on the surface of the light-emitting layer facing away from the first sub-circuit board; A transparent flexible protective layer, the transparent flexible protective layer is located on the surface of the adhesive layer facing away from the light-emitting layer; A flexible substrate, which is located on the side of the touch sensing layer away from the first sub-circuit board.

12. A method for manufacturing a touch display panel, characterized in that, Comprising: A circuit board, the circuit board includes a first sub-circuit board and a second sub-circuit board adjacent to the first sub-circuit board, the circuit board includes a rigid-flex board, the first sub-circuit board is a flexible circuit board, and the second sub-circuit board is a rigid circuit board; A light-emitting layer is formed on one side surface of the first sub-circuit board. A first circuit is provided on one side surface of the first sub-circuit board. The first circuit is on the same side as the light-emitting layer and is electrically connected to the light-emitting layer. The surface of the light-emitting layer away from the first sub-circuit board is the light-emitting surface. When stress is applied to the light-emitting surface of the light-emitting layer, the first sub-circuit board will deform accordingly, so that the touch sensing layer senses the stress, and then the touch function is exerted; A touch sensing layer is formed on the side surface of the first sub-circuit board away from the light-emitting layer; A driving unit is provided on one side surface of the second sub-circuit board. The touch sensing layer and the light-emitting layer are respectively electrically connected to the driving unit. The driving unit is on the same side as the touch sensing layer. A second circuit is provided in the second sub-circuit board. The second circuit connects the first circuit and the driving unit; A third circuit is provided on the side surface of the second sub-circuit board facing the driving unit. The third circuit connects the touch sensing layer and the driving unit.

13. The method for manufacturing a touch display panel according to claim 12, characterized in that, A light-emitting layer is formed on one side surface of the first sub-circuit board by a transfer process.

14. The manufacturing method of the touch display panel according to claim 12, wherein A touch sensing layer is formed on the side surface of the first sub-circuit board away from the light-emitting layer by a printing process or a laser etching process.

15. The manufacturing method of the touch display panel according to claim 12, wherein A driving unit is provided on one side surface of the second sub-circuit board by a pasting process.

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