Oncell touch module and touch screen
By setting the drive electrode and the induction electrode on the hard substrate of the onecell touch module, the problem of difficulty and high cost when making electrode patterns on the soft substrate in the prior art is solved, and the effect of improving yield and reducing production costs is achieved.
Patent Information
- Application Number
- CN202420215420.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing onecell touch modules are difficult to make electrode patterns on soft substrates, with high process requirements and low yield, resulting in excessive production costs.
The driving electrode and the induction electrode are arranged on a hard substrate between the upper polarizer and the color filter glass, and a combination of a hard coating, an optical alignment material PAM layer and a reactive liquid crystal RM layer are used to improve the difficulty and yield of the electrode pattern.
By setting electrodes on the hard substrate, the difficulty of making the electrode pattern is reduced, the yield rate is improved, and production costs are saved.
Smart Images
Figure CN222762359U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment, in particular to an oncell touch module and a touch screen. Background Art
[0002] Compared with the external touch module, the embedded oncell touch module has a higher degree of integration and the overall display screen is thinner, which is conducive to cost savings; compared with the incell touch module which also uses embedded technology, the process difficulty is lower, and because there is an extra touch layer, the display effect is also improved to a certain extent.
[0003] Existing oncell touch modules often embed the driving electrodes and sensing electrodes on both sides of the polarizer or phase difference film. However, the polarizer or phase difference film is a soft substrate. It is difficult to make electrode patterns on the soft substrate, and the process requirements are high. The yield is low, resulting in excessively high production costs. Utility Model Content
[0004] The purpose of the utility model is to provide an oncell touch module and a touch screen to alleviate the technical problems of high difficulty, high process requirements, low yield and high cost in making electrode patterns on a soft substrate, thereby reducing the difficulty of making electrode patterns and further reducing production costs.
[0005] In a first aspect, an embodiment of the utility model provides an oncell touch module, comprising: a phase difference film, an upper polarizer, an electrode group, a color filter glass, a liquid crystal, a TFT switch, a TFT glass, a lower polarizer and a backlight module arranged in sequence from top to bottom; the above-mentioned electrode group includes a plurality of driving electrodes and a plurality of sub-electrode groups composed of sensing electrodes corresponding to each driving electrode.
[0006] In a preferred implementation of the embodiment of the present utility model, the above-mentioned multiple sub-electrode groups are arranged in parallel.
[0007] In a preferred implementation of the embodiment of the utility model, the above-mentioned phase difference film includes a hard coating layer, an optical alignment material PAM layer and a reactive liquid crystal RM layer; the above-mentioned hard coating layer is adhered to the substrate through the adhesive part that moves downward during the thermal curing process, and the above-mentioned substrate is a display material; the above-mentioned PAM layer is located between the above-mentioned hard coating layer and the above-mentioned RM layer, and is adhered to the above-mentioned hard coating layer through the adhesive part that moves downward during the thermal curing process; the above-mentioned RM layer is located on the upper layer of the above-mentioned PAM layer and is connected to the above-mentioned PAM layer.
[0008] In a preferred implementation of the embodiment of the utility model, the backlight module includes: plastic or iron, a reflective sheet, a light guide plate, a diffusion sheet, an upper brightness enhancement sheet, a lower brightness enhancement sheet, black plastic and an LED light bar group.
[0009] In a second aspect, an embodiment of the utility model provides a touch screen, comprising: the above-mentioned oncell touch module, and also comprising: a transparent glass cover plate attached to the above-mentioned phase difference film.
[0010] In a preferred implementation of the embodiment of the utility model, the transparent glass cover is bonded to the phase difference film via an OCA optical adhesive layer.
[0011] In a preferred implementation of the embodiment of the utility model, the touch screen further comprises a shell; the frame of the shell wraps the oncell touch module and the transparent glass cover.
[0012] In a preferred implementation of the embodiment of the present utility model, the material of the shell is metal.
[0013] In a preferred implementation of the embodiment of the present utility model, the thickness of the transparent glass cover is 100 um.
[0014] In a preferred implementation of the embodiment of the utility model, the touch screen further includes: a touch display FPC device connected to the oncell touch module.
[0015] The embodiments of the present invention have the following beneficial technical effects:
[0016] The embodiment of the utility model provides an oncell touch module and touch screen, including: a phase difference film, an upper polarizer, an electrode group, a color filter glass, a liquid crystal, a TFT switch, a TFT glass, a lower polarizer and a backlight module arranged in sequence from top to bottom; the electrode group includes a plurality of driving electrodes and a plurality of sub-electrode groups composed of sensing electrodes corresponding to each driving electrode. The oncell touch module arranges the driving electrodes and the sensing electrodes corresponding to the driving electrodes on a hard substrate between the upper polarizer and the color filter glass, thereby improving the production yield and saving the production cost.
[0017] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.
[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 A schematic diagram of the structure of a traditional oncell touch module provided in an embodiment of the utility model;
[0021] Figure 2 A schematic diagram of the structure of an oncell touch module provided by an embodiment of the utility model;
[0022] Figure 3 A schematic diagram of the arrangement structure of a sub-electrode group provided in an embodiment of the utility model;
[0023] Figure 4 A schematic structural diagram of a touch screen provided in an embodiment of the utility model.
[0024] Icons: 11-phase difference film; 12-upper polarizer; 13-electrode group; 14-color filter glass; 15-liquid crystal; 16-TFT switch; 17-TFT glass; 18-lower polarizer; 19-backlight module; 21-driving electrode; 22-sensing electrode; 41-oncell touch module; 42-transparent glass cover. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0026] At present, the existing oncell touch modules often embed the driving electrodes and sensing electrodes on both sides of the polarizer or phase difference film. The polarizer or phase difference film is a soft substrate. It is difficult to make electrode patterns on the soft substrate, and the process requirements are high. The yield is low, resulting in excessively high production costs.
[0027] Based on this, the embodiment of the utility model provides an oncell touch module and a touch screen, in which the oncell touch module sets the driving electrode and the sensing electrode corresponding to the driving electrode on a hard substrate between the upper polarizer and the color filter glass, thereby improving the production yield and saving the production cost. To facilitate the understanding of the embodiment of the utility model, the oncell touch module disclosed in the embodiment of the utility model is first introduced in detail.
[0028] Example 1
[0029] In this embodiment, Figure 1 A schematic structural diagram of a traditional oncell touch module provided in an embodiment of the utility model.
[0030] Depend on Figure 1 As can be seen, the existing oncell touch module includes: a phase difference film 11, an upper polarizer 12, a color filter glass 14, a liquid crystal 15, a TFT switch 16, a TFT glass 17, a lower polarizer 18 and a backlight module 19 arranged in order from top to bottom. Among them, the driving electrode 21 and the sensing electrode 22 are embedded on both sides of the upper polarizer 12 or the phase difference film 11, and the upper polarizer 12 or the phase difference film 11 is a soft substrate. It is difficult to make an electrode pattern on the soft substrate, the process requirements are high, and the yield is low, which is not conducive to cost saving.
[0031] Furthermore, Figure 2 A schematic structural diagram of an oncell touch module provided in an embodiment of the utility model.
[0032] Depend on Figure 2 As can be seen, the oncell touch module in this embodiment includes: a phase difference film 11, an upper polarizer 12, an electrode group 13, a color filter glass 14, a liquid crystal 15, a TFT switch 16, a TFT glass 17, a lower polarizer 18 and a backlight module 19 arranged in sequence from top to bottom; the above-mentioned electrode group 13 includes a plurality of driving electrodes 21 and a plurality of sub-electrode groups 13 composed of a sensing electrode 22 corresponding to each driving electrode 21.
[0033] Furthermore, the plurality of sub-electrode groups 13 are arranged in parallel.
[0034] Furthermore, the plurality of sub-electrode groups 13 are disposed on a hard substrate between the upper polarizer 12 and the color filter glass 14 .
[0035] Here, for ease of understanding, Figure 3 A schematic diagram of the arrangement structure of a sub-electrode group provided in an embodiment of the utility model.
[0036] In this embodiment, the phase difference film 11 includes a hard coating layer, an optical alignment material PAM layer and a reactive liquid crystal RM layer; the hard coating layer is adhered to the substrate through an adhesive portion that moves downward during the thermal curing process, and the substrate is a display material; the PAM layer is located between the hard coating layer and the RM layer, and is adhered to the hard coating layer through the adhesive portion that moves downward during the thermal curing process; the RM layer is located on the upper layer of the PAM layer and is connected to the PAM layer.
[0037] Furthermore, the backlight module 19 includes: plastic or iron, a reflective sheet, a light guide plate, a diffusion sheet, an upper brightness enhancement sheet, a lower brightness enhancement sheet, black plastic and an LED light bar group.
[0038] The embodiment of the utility model provides an oncell touch module, including: a phase difference film, an upper polarizer, an electrode group, a color filter glass, a liquid crystal, a TFT switch, a TFT glass, a lower polarizer and a backlight module arranged in sequence from top to bottom; the electrode group includes a plurality of driving electrodes and a plurality of sub-electrode groups composed of sensing electrodes corresponding to each driving electrode. The oncell touch module arranges the driving electrodes and the sensing electrodes corresponding to the driving electrodes on a hard substrate between the upper polarizer and the color filter glass, thereby improving the production yield and saving the production cost.
[0039] Example 2
[0040] Based on Embodiment 1, this embodiment provides a touch screen. Figure 4 A schematic structural diagram of a touch screen provided in an embodiment of the utility model.
[0041] Depend on Figure 4 As can be seen, the touch screen includes: the oncell touch module 41 of the above embodiment, and also includes: a transparent glass cover plate 42 attached to the above phase difference film 11.
[0042] Furthermore, the transparent glass cover plate 42 is bonded to the phase difference film 11 via an OCA optical adhesive layer.
[0043] Furthermore, the touch screen further comprises a shell; the frame of the shell wraps the oncell touch module 41 and the transparent glass cover 42 .
[0044] In actual operation, the shell is made of metal.
[0045] In this embodiment, the thickness of the transparent glass cover plate is 100 um.
[0046] Furthermore, the touch screen further includes: a touch display FPC device connected to the oncell touch module 41 .
[0047] The touch screen provided in this embodiment has the same technical features as the oncell touch module provided in the above embodiment 1, so it can also solve the same technical problems and achieve the same technical effects. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the touch screen described above can refer to the corresponding structure of the oncell touch module in the above embodiment 1, and will not be repeated here.
[0048] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0049] In the description of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the present utility model, not to limit it; although the present utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.
Claims
1. An oncell touch module, characterized in that: include: The phase difference film, the upper polarizer, the electrode group, the color filter glass, the liquid crystal, the TFT switch, the TFT glass, the lower polarizer and the backlight module are arranged in sequence from top to bottom; The electrode group includes a plurality of sub-electrode groups consisting of a plurality of driving electrodes and a sensing electrode corresponding to each driving electrode; wherein each of the driving electrodes and the sensing electrode corresponding to the driving electrode is arranged on a hard substrate between the upper polarizer and the color filter glass.
2. The oncell touch module according to claim 1, characterized in that: include: A plurality of the sub-electrode groups are arranged in parallel.
3. The oncell touch module according to claim 1, characterized in that: The phase difference film comprises a hard coating, an optical alignment material PAM layer and a reactive liquid crystal RM layer; the hard coating is adhered to a substrate through an adhesive portion that moves downward during a thermal curing process, and the substrate is a display material; The PAM layer is located between the hard coating layer and the RM layer, and is adhered to the hard coating layer through the adhesive portion that moves downward during the thermal curing process; The RM layer is located on the upper layer of the PAM layer and is connected to the PAM layer.
4. The oncell touch module according to claim 1, characterized in that: The backlight module includes: plastic or iron, a reflective sheet, a light guide plate, a diffusion sheet, an upper light-enhancing sheet, a lower light-enhancing sheet, black plastic and an LED light bar group.
5. A touch screen, characterized in that: include: The oncell touch module according to any one of claims 1 to 4 further comprises: a transparent glass cover plate bonded to the phase difference film.
6. The touch screen according to claim 5, characterized in that: The transparent glass cover is bonded to the phase difference film via an OCA optical adhesive layer.
7. The touch screen according to claim 5, characterized in that: The touch screen also includes a shell; the frame of the shell wraps the oncell touch module and the transparent glass cover.
8. The touch screen according to claim 7, characterized in that: The shell is made of metal.
9. The touch screen according to claim 5, characterized in that: The thickness of the transparent glass cover plate is 100 um.
10. The touch screen according to claim 5, characterized in that: The touch screen also includes: a touch display FPC device connected to the oncell touch module.