Touch display panel and display device

Abstract

Embodiments of the present application provide a touch display panel and a display device. In the touch display panel provided by the embodiments of the present application, a glue frame is arranged between a non-display area of a display panel and a peripheral area of a touch panel, a light exit side of a display area of the display panel is provided with a polarizer, a functional layer is arranged on a side of a central area of the touch panel close to the display panel, and the central area corresponds to the display area of the display panel. By setting a maximum design value of a gap between the functional layer and the polarizer to be less than or equal to an allowable error value, the gap between the display area of the display panel and the central area of the touch panel can be ensured to be within the allowable error value, and the gap between the display area of the display panel and the central area of the touch panel can be prevented from being too large. Moreover, at least part of the touch panel can be supported by the functional layer and the polarizer, the stress accumulated in the touch panel can be reduced, and the probability of inaccurate touch point recognition of the touch panel in the touch process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular, the present application relates to a kind of touch display panel and display device. BACKGROUND

[0002] With the development of display technology, since touch display device has excellent human-computer interaction performance, more and more consumers are favored. At present, the touch display panel applied to touch display device mainly includes TP (Touch Panel, touch panel) and LCM (LCD Module, LCD module), and the TP and LCM are laminated to form a touch display panel.

[0003] At present, in the frame bonding process of TP and LCM, since the frame bonding glue has a certain thickness, there is obvious gap between the central region of TP and the central region of LCM, when the gap is too large, due to the action of gravity, TP will be deformed, especially the deformation amount of the central region of TP is too large, which is easy to cause stress accumulation in TP, and then cause the problem of inaccurate touch point recognition in user's use process. SUMMARY

[0004] The present application is directed to the shortcomings of the prior art, and proposes a kind of touch display panel and display device, to solve the technical problem that the gap between the central region of TP and the central region of LCM in the prior art touch display panel is too large.

[0005] In a first aspect, the embodiments of the present application provide a touch display panel, comprising:

[0006] a display panel;

[0007] a touch panel, disposed on the light-out side of the display panel;

[0008] a frame, connected between the non-display region of the display panel and the peripheral region of the touch panel;

[0009] a polaroid, disposed on the light-out side of the display region of the display panel, and the non-display region of the display panel is located outside the display region;

[0010] a functional layer, disposed on the side of the central region of the touch panel close to the display panel, and the central region corresponds to the display region;

[0011] In the direction perpendicular to the touch display panel, the maximum design value of the gap between the functional layer and the polaroid is less than or equal to the allowable error value.

[0012] In a second aspect, the embodiments of the present application provide a display device, comprising: the touch display panel provided in the first aspect.

[0013] The beneficial technical effects of the technical solutions provided in this application include:

[0014] In the touch display panel provided in this application embodiment, a frame is disposed between the non-display area of ​​the display panel and the peripheral area of ​​the touch panel. A polarizer is disposed on the light-emitting side of the display area of ​​the display panel, and a functional layer is disposed on the side of the central area of ​​the touch panel close to the display panel. The central area corresponds to the display area of ​​the display panel. By setting the maximum design value of the gap between the functional layer and the polarizer to be less than or equal to the allowable error value, it can be ensured that the gap between the display area of ​​the display panel and the central area of ​​the touch panel is within the allowable error value, and the gap between the display area of ​​the display panel and the central area of ​​the touch panel can be avoided from being too large.

[0015] Furthermore, by ensuring that the gap between the display area of ​​the display panel and the central area of ​​the touch panel is within the allowable error value, at least part of the touch panel can be supported by the functional layer and the polarizer, which can avoid the problem of excessive deformation in the central area of ​​the touch panel, thereby reducing the stress accumulated in the touch panel and thus reducing the probability of inaccurate control point recognition during the touch process.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of a touch display panel provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of another touch display panel provided in an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 110 - Display panel; 111 - Non-display area; 112 - Display area;

[0022] 120 - Touch panel; 121 - Peripheral area; 122 - Central area;

[0023] 130 - Frame;

[0024] 140-Polarizing film;

[0025] 150 - Functional layer. Detailed Implementation

[0026] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0028] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0029] First, let's introduce and explain several terms used in this application:

[0030] LCM: LCM (LCD Module) is short for LCD (Liquid Crystal Display) display module. It refers to an assembly that combines liquid crystal display devices, peripheral circuits such as connectors, control and drive circuits, PCB (Printed Circuit Board), backlight, structural components, etc.

[0031] The inventors of this application discovered through research that current bonding methods for touch panels (TP) and liquid crystal displays (LCM) include air bonding and direct bonding. Direct bonding uses optically clear adhesive (OCA) to bond the entire surface of the TP and LCM. Therefore, direct bonding requires a large amount of OCA, but high-quality OCA manufacturers are relatively few, resulting in high prices and long lead times for high-quality OCA. Consequently, direct bonding leads to higher prices and unstable production cycles for touch display panels. Air bonding uses adhesive to fix the four sides of the TP and LCM, offering lower costs and higher production efficiency compared to direct bonding. However, in the current air bonding process, the thickness of the adhesive creates a noticeable gap between the central areas of the TP and LCM. Air trapped in this gap can affect the display image, resulting in poor display quality. Furthermore, when the gap is too large, the TP will deform due to gravity, especially the central area of ​​the TP. Excessive deformation can easily lead to stress accumulation in the TP, which can cause inaccurate touch point recognition during use and affect the user experience.

[0032] Existing manufacturers increase the thickness of the touch panel (TP) to increase its strength and reduce the deformation of the central area. However, this increases the thickness of the touch display panel, which is not conducive to the thinning of the touch display panel. Moreover, increasing the thickness of the TP will also affect the display screen of the touch display panel.

[0033] The touch display panel and display device provided in this application are intended to solve the above-mentioned technical problems of the prior art.

[0034] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments.

[0035] This application provides a touch display panel, the structural schematic of which is shown below. Figure 1 As shown, it includes:

[0036] Display panel 110;

[0037] The touch panel 120 is located on the light-emitting side of the display panel 110;

[0038] The frame 130 connects the non-display area 111 of the display panel 110 and the peripheral area 121 of the touch panel 120;

[0039] A polarizer 140 is disposed on the light-emitting side of the display area 112 of the display panel 110, and the non-display area 111 of the display panel 110 is located outside the display area 112;

[0040] Functional layer 150 is disposed in the central area 122 of touch panel 120 on the side close to display panel 110, and the central area 122 corresponds to display area 112;

[0041] In the direction perpendicular to the touch display panel, the maximum design value of the gap d between the functional layer 150 and the polarizer 140 is less than or equal to the allowable error value.

[0042] In the touch display panel provided in this application embodiment, the frame 130 is disposed between the non-display area 111 of the display panel 110 and the peripheral area 121 of the touch panel 120. A polarizer 140 is disposed on the light-emitting side of the display area 112 of the display panel 110. A functional layer 150 is disposed on the side of the central area 122 of the touch panel 120 near the display panel 110. The central area 122 corresponds to the display area 112 of the display panel 110. By setting the maximum design value of the gap d between the functional layer 150 and the polarizer 140 to be less than or equal to the allowable error value, it can be ensured that the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is within the allowable error value, and the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is not too large.

[0043] Furthermore, by ensuring that the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is within the allowable error value, at least a portion of the touch panel 120 can be supported by the functional layer 150 and the polarizer 140. This avoids the problem of excessive deformation in the central area 122 of the touch panel 120, thereby reducing the stress accumulated in the touch panel 120 and further reducing the probability of inaccurate control point recognition during touch.

[0044] In this embodiment, the display panel 110 includes a display area 112 and a non-display area 111 surrounding the display area 112, and the touch panel 120 includes a central area 122 and a peripheral area 121 surrounding the central area 122, with the central area 122 corresponding to the display area 112. The touch panel 120 is disposed on the light-emitting side of the display panel 110, and the frame 130 is connected between the non-display area 111 of the display panel 110 and the peripheral area 121 of the touch panel 120, so that the display panel 110 and the touch panel 120 are fixedly connected.

[0045] like Figure 1As shown, a polarizer 140 and a functional layer 150 are disposed between the display panel 110 and the touch panel 120. Specifically, the polarizer 140 is connected to the display panel 110 and is disposed on the light-emitting side of the display area 112 of the display panel 110; the functional layer 150 is connected to the touch panel 120 and is disposed on the side of the central area 122 of the touch panel 120 near the display panel 110. In the direction perpendicular to the touch display panel, the maximum design value of the gap d between the functional layer 150 and the polarizer 140 is less than or equal to the allowable error value. By ensuring that the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is within the allowable error value, at least a portion of the touch panel 120 can be supported by the functional layer 150 and the polarizer 140. This avoids the problem of excessive deformation in the central area 122 of the touch panel 120, thereby reducing the stress accumulated in the touch panel 120 and further reducing the probability of inaccurate control point recognition during touch.

[0046] It should be noted that in this embodiment, the minimum design value of the gap d between the functional layer 150 and the polarizer 140 is greater than or equal to 0, that is, to avoid interference fit between the functional layer 150 and the polarizer 140, which can prevent the touch panel 120 from undergoing significant deformation due to interference fit between the functional layer 150 and the polarizer 140, and can ensure the touch function of the touch display panel.

[0047] In this embodiment, the permissible error value is determined by the thickness error of the frame 130, the thickness error of the functional layer 150, and the thickness error of the polarizer 140. Those skilled in the art will understand that, to avoid interference fit between the functional layer 150 and the polarizer 140, the dimensions of the frame 130, the functional layer 150, and the polarizer 140 in the direction perpendicular to the touch display panel need to be strictly controlled; that is, the thicknesses of the frame 130, the functional layer 150, and the polarizer 140 need to be strictly controlled.

[0048] However, due to the influence of manufacturing processes, bonding processes, and related production equipment, certain errors may occur in the thickness of the frame 130, functional layer 150, and polarizer 140. Therefore, in this embodiment, the allowable error value of the touch display panel is determined based on the thickness errors of the frame 130, functional layer 150, and polarizer 140. By ensuring that the maximum design value of the gap d between functional layer 150 and polarizer 140 is less than or equal to the allowable error value, the problem of excessive deformation in the central area 122 of the touch panel 120 can be avoided, thereby reducing the probability of inaccurate control point recognition during touch operation. Simultaneously, it can prevent significant deformation of the touch panel 120 due to the interference fit between functional layer 150 and polarizer 140, further ensuring the touch functionality of the touch display panel.

[0049] In this embodiment, by setting the minimum design value of the gap d between the functional layer 150 and the polarizer 140 to be greater than or equal to 0, and the maximum design value of the gap d between the functional layer 150 and the polarizer 140 to be less than or equal to the allowable error value, the probability of inaccurate control point recognition of the touch panel 120 during touch can be reduced without increasing the thickness of the touch panel 120, thus ensuring the touch function of the touch display panel; moreover, without increasing the thickness of the touch panel 120, the display effect of the touch display panel can be guaranteed, which is conducive to the thinning of the touch display panel.

[0050] In one embodiment of this application, the allowable error value ranges from 0 to 0.2 millimeters.

[0051] In this embodiment, the thickness errors of the frame 130, the functional layer 150, and the polarizer 140 are statistically analyzed based on existing production processes, materials, bonding processes, and related production equipment. Based on these thickness errors, the allowable error range in this embodiment is determined to be 0-0.2 mm. It should be noted that the allowable error range includes the extreme values ​​of 0 and 0.2 mm. Figure 2 When the allowable error value of the touch display panel shown is 0, the gap d between the functional layer 150 and the polarizer 140 is 0, and one side of the functional layer 150 and one side of the polarizer 140 are in contact with each other.

[0052] The specific calculation method for the allowable error value will be described in detail later, and will not be repeated here.

[0053] In one embodiment of this application, in the direction perpendicular to the touch display panel, the size of the frame 130 is not less than the sum of the size of the polarizer 140 and the size of the functional layer 150.

[0054] In order to ensure that the maximum design value of the gap d between the functional layer 150 and the polarizer 140 is less than or equal to the allowable error value, in this embodiment, in the direction perpendicular to the touch display panel, the size of the frame 130 is not less than the sum of the size of the polarizer 140 and the size of the functional layer 150, that is, the thickness D1 of the frame 130 is not less than the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150.

[0055] Optionally, if the thickness D1 of the frame 130 is greater than the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150, such as Figure 1 As shown, the gap d between the functional layer 150 and the polarizer 140 is greater than 0, thereby avoiding interference fit between the functional layer 150 and the polarizer 140. Moreover, since the maximum design value of the gap d between the functional layer 150 and the polarizer 140 is not greater than the allowable error value, the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is not too large, so that at least a part of the touch panel 120 can be supported by the functional layer 150 and the polarizer 140, avoiding excessive deformation of the central area 122 of the touch panel 120, thereby reducing the stress accumulated in the touch panel 120 and ensuring the touch performance of the touch display panel.

[0056] Optionally, when the thickness D1 of the frame 130 is equal to the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150, such as Figure 2 As shown, the gap d between the functional layer 150 and the polarizer 140 is equal to 0, and one side of the functional layer 150 and one side of the polarizer 140 are in contact with each other, which can avoid interference fit between the functional layer 150 and the polarizer 140. At this time, there is no air between the functional layer 150 and the polarizer 140, which can also make the display panel 110 and the touch panel 120 achieve a full bonding effect, thereby ensuring the display effect and touch performance of the touch display panel and improving the user experience.

[0057] In one embodiment of this application, the polarizer 140 has a size of 0.13-0.19 mm in the direction perpendicular to the touch display panel.

[0058] In this embodiment of the application, the polarizer 140 has a dimension of 0.13-0.19 mm in the direction perpendicular to the touch display panel, that is, the thickness D2 of the polarizer 140 ranges from 0.13 to 0.19 mm. It should be noted that the thickness D2 of the polarizer 140 includes the extreme values ​​of 0.13 mm and 0.19 mm.

[0059] Optionally, in this embodiment of the application, due to limitations in production process, production materials and production equipment, the error of the thickness D2 of the polarizer 140 is 0.03 mm, and the preset standard thickness D2 of the polarizer 140 is 0.16 mm. Therefore, the value range of the thickness D2 of the polarizer 140 is 0.13-0.19 mm, which can meet the production requirements of the touch display panel provided in this embodiment of the application.

[0060] In one embodiment of this application, the functional layer 150 has a size of 0.09-0.11 mm in the direction perpendicular to the touch display panel.

[0061] In this embodiment, the dimension of the functional layer 150 in the direction perpendicular to the touch display panel is 0.13-0.19 mm, that is, the thickness D3 of the functional layer 150 ranges from 0.09-0.11 mm. It should be noted that the thickness D3 of the functional layer 150 includes the extreme values ​​of 0.09 mm and 0.11 mm.

[0062] Optionally, in this embodiment of the application, due to limitations in production process, production materials and production equipment, the thickness D3 of the functional layer 150 has an error of 0.01 mm, and the preset standard thickness D3 of the functional layer 150 is 0.1 mm. Therefore, the value range of the thickness D3 of the functional layer 150 is 0.09-0.11 mm, which can meet the production requirements of the touch display panel provided in this embodiment of the application.

[0063] In one embodiment of this application, the size of the frame 130 is 0.3-0.4 mm in the direction perpendicular to the touch display panel.

[0064] In this embodiment, the size of the frame 130 in the direction perpendicular to the touch display panel is 0.13-0.19 mm, that is, the thickness D1 of the frame 130 ranges from 0.3-0.4 mm. It should be noted that the thickness D1 of the frame 130 includes the extreme values ​​of 0.3 mm and 0.4 mm.

[0065] Optionally, in this embodiment, due to limitations in manufacturing processes, materials, bonding processes, and equipment, the thickness D1 of the frame 130 has an error of 0.05 mm, and the preset standard thickness D3 of the frame 130 is 0.35 mm. Therefore, the thickness D1 of the frame 130 can be in the range of 0.3-0.4 mm, which meets the production requirements of the touch display panel provided in this embodiment. In this embodiment, the ranges of thickness D1 for the frame 130, thickness D2 for the polarizer 140, and thickness D3 for the functional layer 150 are shown in Table 1.

[0066] Table 1

[0067]

[0068] In one embodiment of this application, in the direction perpendicular to the touch display panel, the minimum size of the frame 130 is equal to the sum of the maximum size of the polarizer 140 and the maximum size of the functional layer 150, that is, the minimum thickness D1 of the frame 130 is equal to the sum of the maximum thickness D2 of the polarizer 140 and the maximum thickness D3 of the functional layer 150.

[0069] Optionally, according to the range of values ​​for the thickness D1 of the frame 130, the thickness D2 of the polarizer 140, and the thickness D3 of the functional layer 150 shown in Table 1, it can be seen that when the thickness D2 of the polarizer 140 is the maximum value of 0.19 mm and the thickness D3 of the functional layer 150 is the maximum value of 0.11 mm in the touch display panel, and the thickness D1 of the frame 130 is the minimum value of 0.3 mm, that is, when the thickness D1 of the frame 130 is equal to the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150, as shown in Table 1, the thickness D1 of the frame 130 is equal to the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150. Figure 2 As shown, the gap d between the functional layer 150 and the polarizer 140 is equal to 0. One side of the functional layer 150 and the other side of the polarizer 140 are in contact with each other, which can avoid interference fit between the functional layer 150 and the polarizer 140. At this time, there is no air between the functional layer 150 and the polarizer 140, which can also make the display panel 110 and the touch panel 120 achieve a full bonding effect, thereby ensuring the display effect and touch performance of the touch display panel and improving the user experience.

[0070] When the thickness D1 of the frame 130 is 0.4 mm (the maximum value within the range), the gap d between the functional layer 150 and the polarizer 140 is 0.1 mm. Within the allowable error range, this avoids excessive gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120. This ensures that at least a portion of the touch panel 120 is supported by the functional layer 150 and the polarizer 140, preventing excessive deformation in the central area 122 of the touch panel 120. This reduces the stress accumulated in the touch panel 120 and ensures the touch performance of the touch display panel.

[0071] Optionally, based on the value ranges of the thickness D1 of the frame 130, the thickness D2 of the polarizer 140, and the thickness D3 of the functional layer 150 provided in the above embodiments, it can be seen that when the thickness D2 of the polarizer 140 is at its minimum value of 0.13 mm and the thickness D3 of the functional layer 150 is at its minimum value of 0.09 mm in the touch display panel, the sum of the thickness D2 of the polarizer 140 and the thickness D3 of the functional layer 150 is 0.22 mm; when the thickness D1 of the frame 130 is at its minimum value of 0.3 mm, the gap d between the functional layer 150 and the polarizer 140 is 0.08 mm; when the thickness D1 of the frame 130 is at its minimum value of 0.3 mm, the gap d between the functional layer 150 and the polarizer 140 is 0.08 mm; when the thickness D1 of the frame 130 is at its minimum value of 0.3 mm, the gap d between the frame 130 and the polarizer 140 is 0.08 mm; when the thickness D1 of the frame 130 is at its minimum value of 0.13 mm, the gap d between the functional layer 150 and the polarizer 140 is 0.09 mm. When the maximum value of 0.4 mm is taken, the gap d between the functional layer 150 and the polarizer 140 is 0.18 mm. Both 0.08 mm and 0.18 mm are within the range of allowable error values. Therefore, the touch display panel provided in this application embodiment can avoid the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 being too large, so that at least a part of the touch panel 120 can be supported by the functional layer 150 and the polarizer 140. This can avoid the problem of excessive deformation in the central area 122 of the touch panel 120, thereby reducing the stress accumulated in the touch panel 120 and ensuring the touch performance of the touch display panel.

[0072] In one embodiment of this application, in a direction perpendicular to the touch display panel, the orthographic projection of the functional layer 150 onto the display panel 110 overlaps with the orthographic projection of the central region 122 onto the display panel 110.

[0073] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the orthographic projection of the functional layer 150 onto the display panel 110 overlaps with the orthographic projection of the central region 122 onto the display panel 110. When the functional layer 150 includes an optical film layer, by ensuring that the orthographic projection of the functional layer 150 onto the display panel 110 overlaps with the orthographic projection of the central region 122 onto the display panel 110, the functional layer 150 can act on the light transmitted through the central region 122, thereby ensuring the normal operation of the touch display panel. The orthographic projection of the polarizer 140 onto the display panel 110 overlaps with the orthographic projection of the display area 112 onto the display panel 110, ensuring that the polarizer 140 can cover the entire display area 112 of the display panel 110, thereby ensuring the normal operation of the touch display panel.

[0074] Optionally, if the functional layer 150 does not include an optical film layer, it is only necessary to ensure that the orthographic projection of the functional layer 150 on the display panel 110 overlaps with the orthographic projection of the central region 122 on the display panel 110.

[0075] In one embodiment of this application, the functional layer 150 includes any one of an explosion-proof film layer, an anti-reflective film layer, and an anti-blue light film layer.

[0076] In this embodiment, the explosion-proof film layer includes an ASF (Anti-Shatter Film). The ASF is adhered to one side of the touch panel 120. Because an OCA (Optical Coating A) is provided on one side of the ASF, it can bond the touch panel 120 while ensuring high light transmittance, preventing fragments from flying after the touch panel 120 breaks, thus ensuring user safety. The anti-reflective film layer can reduce or eliminate reflected light from the touch panel 120, thereby increasing the light transmittance of the touch panel 120, reducing or eliminating stray light, and improving the display effect of the touch display panel. The anti-blue light film layer can reduce the transmittance of 440 nm wavelength blue light, thereby reducing the amount of blue light emitted from the touch display panel and reducing the harm of blue light from the touch display panel to users.

[0077] It should be noted that in this embodiment, the functional layer 150 is not limited to an explosion-proof film layer, an anti-reflective film layer, and an anti-blue light film layer. Those skilled in the art can choose to set different functional layers 150 according to actual needs. Optionally, when the functional layer 150 includes an anti-reflective film layer or an anti-blue light film layer, in order to ensure that the anti-reflective film layer or the anti-blue light film layer can act on the light transmitted through the central region 122, thereby ensuring the normal operation of the touch display panel, the orthographic projection of the functional layer 150 on the display panel 110 overlaps with the orthographic projection of the central region 122 on the display panel 110. When the functional layer 150 only includes an explosion-proof film layer, it is only necessary to ensure that the orthographic projection of the functional layer 150 on the display panel 110 partially overlaps with the orthographic projection of the central region 122 on the display panel 110.

[0078] In one embodiment of this application, the display panel 110 includes either a liquid crystal display panel or an organic light-emitting display panel.

[0079] In this embodiment, the display panel 110 of the touch display panel includes either a liquid crystal display panel or an organic light-emitting display panel. Those skilled in the art can select different types of display panels 110 according to actual needs.

[0080] Based on the same inventive concept, this application provides a display device, including: the touch display panel provided in the above embodiments.

[0081] The display device provided in this application has the same inventive concept and the same beneficial effects as the previous embodiments. The contents of the touch display panel in this display device that are not shown in detail can be referred to the previous embodiments, and will not be repeated here.

[0082] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0083] In the touch display panel provided in this application embodiment, the frame 130 is disposed between the non-display area 111 of the display panel 110 and the peripheral area 121 of the touch panel 120. A polarizer 140 is disposed on the light-emitting side of the display area 112 of the display panel 110. A functional layer 150 is disposed on the side of the central area 122 of the touch panel 120 near the display panel 110. The central area 122 corresponds to the display area 112 of the display panel 110. By setting the maximum design value of the gap d between the functional layer 150 and the polarizer 140 to be less than or equal to the allowable error value, it can be ensured that the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is within the allowable error value, and the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is not too large.

[0084] Furthermore, by ensuring that the gap between the display area 112 of the display panel 110 and the central area 122 of the touch panel 120 is within the allowable error value, at least a portion of the touch panel 120 can be supported by the functional layer 150 and the polarizer 140. This avoids the problem of excessive deformation in the central area 122 of the touch panel 120, thereby reducing the stress accumulated in the touch panel 120 and further reducing the probability of inaccurate control point recognition during touch.

[0085] In this embodiment, the minimum design value of the gap d between the functional layer 150 and the polarizer 140 is greater than or equal to 0, which avoids interference fit between the functional layer 150 and the polarizer 140. This prevents the touch panel 120 from undergoing significant deformation due to the interference fit between the functional layer 150 and the polarizer 140, and ensures the touch function of the touch display panel.

[0086] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0087] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0088] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0089] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0090] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A touch display panel, characterized in that, include: Display panel; A touch panel is disposed on the light-emitting side of the display panel, including a central area and a peripheral area surrounding the central area; A plastic frame connects the non-display area of ​​the display panel and the peripheral area of ​​the touch panel; A polarizer is disposed on the light-emitting side of the display area of ​​the display panel, and the non-display area of ​​the display panel is located outside the display area; The functional layer is located in the central area of ​​the touch panel, near the display panel, and the central area corresponds to the display area; The functional layer and the polarizer are disposed within the area defined by the frame; In a direction perpendicular to the touch display panel, the gap between the functional layer and the polarizer is 0, and one side of the functional layer and one side of the polarizer are in contact with each other.

2. The touch display panel according to claim 1, characterized in that, In a direction perpendicular to the touch display panel, the size of the frame is not less than the sum of the size of the polarizer and the size of the functional layer.

3. The touch display panel according to claim 1 or 2, characterized in that, The polarizer has a size of 0.13-0.19 mm in the direction perpendicular to the touch display panel.

4. The touch display panel according to claim 1 or 2, characterized in that, The functional layer has a size of 0.09-0.11 mm in the direction perpendicular to the touch display panel.

5. The touch display panel according to claim 1 or 2, characterized in that, The size of the frame is 0.3-0.4 mm in the direction perpendicular to the touch display panel.

6. The touch display panel according to claim 1, characterized in that, In a direction perpendicular to the touch display panel, the orthographic projection of the functional layer onto the display panel overlaps with the orthographic projection of the central region onto the display panel.

7. The touch display panel according to claim 1 or 6, characterized in that, The functional layer includes any one of the following: an explosion-proof film layer, an anti-reflective film layer, and an anti-blue light film layer.

8. The touch display panel according to claim 1, characterized in that, The display panel includes either a liquid crystal display panel or an organic light-emitting display panel.

9. A display device, characterized in that, include: The touch display panel according to any one of claims 1-8.

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