CN113268165A - Touch module, display module and display device - Google Patents
Touch module, display module and display device Download PDFInfo
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- CN113268165A CN113268165A CN202110643555.8A CN202110643555A CN113268165A CN 113268165 A CN113268165 A CN 113268165A CN 202110643555 A CN202110643555 A CN 202110643555A CN 113268165 A CN113268165 A CN 113268165A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Liquid Crystal (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention relates to a touch module, a display module and a display device, wherein the touch module comprises: a touch layer having touch electrodes; the cover plate layer group is stacked on the touch layer; the cover plate layer group is provided with a display area, the display area comprises a first display area and a second display area outside the first display area, the orthographic projection of the first display area on the touch layer is overlapped with the touch electrode, and the haze of the first display area is larger than that of the second display area. In the touch module, the touch electrode is a conductive metal layer, such as a metal grid, the shape of the first display area of the cover plate layer set is matched with that of the touch electrode, the haze of the first display area is large, the light transmittance is low, etching lines formed at the touch electrode can be shielded, and when the display panel is finally observed by naked eyes, the brightness of the display area is uniform, and the final display effect is good.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a touch module, a display module and a display device.
Background
With the development of technology, the display panel can integrate touch control and display together, so that the display panel has a touch control function, and the display panel with the touch control function is also increasingly applied to various electronic devices. However, in some display panels, due to the haze difference of each film layer inside, the display panel may see the etched lines of the touch film layer when being lighted, thereby affecting the display image quality and reducing the display effect.
Disclosure of Invention
Accordingly, it is desirable to provide a touch module, a display panel and a method for manufacturing the touch module, which can solve the problem that the display panel may have etched lines.
A touch module, the touch module comprising:
a touch layer having touch electrodes; and
the cover plate layer group is stacked on the touch layer;
the cover plate layer group is provided with a display area, the display area comprises a first display area and a second display area outside the first display area, the orthographic projection of the first display area on the touch layer is superposed with the touch electrode, and the haze of the first display area is larger than that of the second display area.
The touch module comprises a touch layer and a cover plate layer group, wherein the touch electrode is a metal layer capable of conducting electricity, such as a metal grid, and the grid can be a rhombic grid or a square grid. The cover plate layer group is covered on the touch layer and used for protecting the touch layer, and the naked eyes watch the display panel from one side of the cover plate layer group back to the touch layer, namely, the light entering the naked eyes is the light emitted to the cover plate layer group by the display module through the touch electrode, but the touch electrode is manufactured through the processes of coating, developing, etching and the like, the haze of the position of the touch electrode and other positions of the touch module is different, the brightness of the corresponding touch electrode area on the display panel can be larger, and further the trace of the touch electrode can be displayed when the display panel is lightened. In order to hide the etching lines formed corresponding to the touch electrodes, the haze of the area of the cover plate layer group corresponding to the touch electrodes can be improved, even if the light transmittance of the area is reduced, the etching lines of the touch electrodes are further shielded, and finally the display panel presents a uniform display effect.
Specifically, the cover plate layer set is stacked on the touch layer, the cover plate layer set is provided with a display area, the display area comprises a first display area and a second display area outside the first display area, the orthographic projection of the first display area on the touch layer is overlapped with the touch electrode, and the haze of the first display area is larger than that of the second display area. The shape of the first display area corresponds to the shape of the touch electrode in a matching manner, for example, the shape of the touch electrode is a rhombic grid, the first display area is correspondingly arranged to be a rhombic grid with the same shape and size as the touch electrode, and if the shape of the touch electrode is a square grid, the first display area is correspondingly arranged to be a square grid with the same shape and size as the touch electrode. Therefore, the shape of the first display area of the cover plate layer set is matched with that of the touch electrode, the haze of the first display area is high, the light transmittance of the first display area is low, etching lines formed at the touch electrode can be shielded, when the display panel is observed by naked eyes, the brightness of the display area is uniform, and the final display effect is good.
In one embodiment, the cover plate layer group comprises a cover plate and a shadow eliminating layer, the cover plate is covered on the touch layer, the shadow eliminating layer is arranged between the cover plate and the touch layer, and the haze of the shadow eliminating layer corresponding to the first display area part is larger than the haze of the shadow eliminating layer corresponding to the second display area part.
In one embodiment, the shadow eliminating layer includes a plurality of patterned structures, and orthographic projections of all the patterned structures on the touch layer coincide with the touch electrodes.
In one embodiment, the material of the patterned structure is at least one of nano-silver, indium tin oxide, TiAl-based alloy, and titanium.
In one embodiment, the shadow eliminating layer is arranged on one surface, facing the touch layer, of the cover plate.
In one embodiment, the cover plate layer group further comprises a polarizer, the polarizer is arranged between the cover plate and the touch layer, and the side of the polarizer, which faces the touch layer, is provided with the shadow eliminating layer; or
The side, opposite to the touch layer, of the polarizer is provided with the vanishing layer.
In one embodiment, the cover plate layer group further includes an optical adhesive layer, the optical adhesive layer is disposed between the cover plate and the touch layer, and the vanishing layer is embedded in the optical adhesive layer.
In one embodiment, the optical adhesive layer includes a first sub adhesive layer and a second sub adhesive layer, the first sub adhesive layer and the second sub adhesive layer are adhered to each other, and the shadow eliminating layer is disposed between the first sub adhesive layer and the second sub adhesive layer.
A display module comprises a display panel and the touch module, wherein the touch module is stacked on the display panel.
A display device comprises the display module.
Drawings
FIG. 1 is a diagram illustrating a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an etching pattern on a display panel;
fig. 3 is a diagram illustrating a film layer of a display panel in the prior art.
100. A display module; 10. a display panel; 30. a touch module; 32. a touch layer; 321. a touch electrode; 34. a cover plate layer group; 341. a cover plate; 343. an optical adhesive layer; 345. a polarizer; 347. a shadow eliminating layer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
FIG. 2 is a schematic diagram of an etching pattern on a display panel; fig. 3 is a diagram illustrating a film layer of a display panel in the prior art.
Referring to fig. 2-3, as mentioned in the background art, some display panels may have etched lines when they are lit, and the inventor researches and discovers that the areas where the etched lines are located have higher brightness than other display areas of the display panels, and the etched lines may be highlighted when the display panels are lit, so that the display brightness of the display panels is different as a whole.
Fig. 1 is a schematic view of a film layer of a touch module according to an embodiment of the invention;
referring to fig. 1, in order to solve the above technical problem, an embodiment of the present invention provides a touch module 30, wherein the touch module 30 is stacked on a display panel 10 for sensing a touch action, and the display panel 10 can display an image according to an instruction of the touch action.
The display panel 10 includes a driving device for inputting a driving current to the display device to control the display device to emit light, and a display device stacked with the driving device. In some embodiments, the display device includes a first electrode, a second electrode, and an organic light emitting layer, the organic light emitting layer is located between the first electrode and the second electrode, one of the first electrode and the second electrode is a cathode, and the other of the first electrode and the second electrode is an anode, and specifically, the polarities of the first electrode and the second electrode may be correspondingly set according to requirements, which is not limited herein. In this way, the organic light emitting layer is located between the cathode and the anode, and electrons injected from the cathode and holes injected from the anode are combined with each other in the organic light emitting layer to form excitons, and light is emitted when the excitons release energy, thereby implementing a display function of the display panel 10. It is understood that in some other embodiments, the display panel 10 may have other display structures, and is not limited herein.
The touch module 30 includes a touch layer 32, and the touch layer 32 has a touch electrode 321 for sensing a touch action. Generally, the touch electrode 321 is a metal layer capable of conducting electricity, such as a metal mesh, and the shape of the mesh may be a diamond mesh or a square mesh, etc. In addition, the touch electrode 321 is manufactured by processes of coating, developing, etching, and the like, and the haze of the position of the touch electrode 321 is different from the haze of other positions of the touch module 30, which may increase the brightness of the area corresponding to the touch electrode 321 on the display panel 100, and further display the trace of the touch electrode 321 when the display panel 100 is lit.
The touch module 30 further includes a cover layer group 34, the cover layer group 34 is disposed on the touch layer 32 for protecting the touch layer 32, and the naked eye views the display panel 100 from a side of the cover layer group 34 opposite to the touch layer 32, that is, the light entering the naked eye is the light emitted from the display module 10 to the cover layer group 34. In order to hide the etching pattern of the touch electrode 321, the light transmittance of the cover plate layer group 34 corresponding to the area of the touch electrode 321 may be reduced to further shield the etching pattern of the touch electrode 321, so that the display panel 100 exhibits a uniform display effect.
Specifically, the cover layer group 34 is stacked on the touch layer 32 and has a display area, and it is understood that the display area of the cover layer group 34 is not the area where the cover layer group 34 emits light, but the area where the cover layer group 34 corresponds to the light emitting position of the display panel 10. The display area includes a first display area and a second display area outside the first display area, an orthographic projection of the first display area on the touch layer 32 is overlapped with the touch electrode 321, and the haze of the first display area is greater than that of the second display area. That is, the projection of the touch electrode 321 toward the cover layer group 34 coincides with the first display area, and the light transmittance of the first display area is smaller than that of the second display area. Correspondingly, the shape of the first display area corresponds to the shape of the touch electrode 321 in a matching manner, for example, the shape of the touch electrode 321 is a rhombic grid, and the first display area is correspondingly set to be a rhombic grid with the same shape and size as the touch electrode 321; if the touch electrode 321 is a square grid, the first display area is correspondingly set to be a square grid with the same shape and size as the touch electrode 321. Thus, the shape of the first display area of the cover plate layer group 34 is matched with the shape of the touch electrode 321, and the first display area has high haze and low light transmittance, so that the etched lines formed at the touch electrode 321 can be shielded, when the display panel 100 is observed by naked eyes, the brightness of the display area is uniform, and the final display effect is better.
Specifically, the overall haze of the cover plate layer set 34 is between 35% and 40%, and the etching lines formed by the touch electrodes 321 are invisible to human eyes.
In some embodiments, the cover plate layer set 34 includes a cover plate 341 and a vanishing layer 347, the cover plate 341 covers the touch layer 32, the vanishing layer 347 is disposed between the cover plate 341 and the touch layer 32, and a haze of a portion of the vanishing layer 347 corresponding to the first display area is greater than a haze of a portion corresponding to the second display area. The cover 341 covers the touch layer 32 to protect the display panel 10 through the cover 341. Moreover, the vanishing layer 347 is arranged between the cover plate 341 and the touch layer 32, so that the haze of the portion of the vanishing layer 347 corresponding to the first display area is relatively large, and the haze of the portion of the vanishing layer 347 corresponding to the second display area is relatively small, so that the etched lines formed at the touch electrode 321 are shielded by the portion of the vanishing layer 347 corresponding to the first display area, and the final display effect is more uniform. It is understood that the portion of the vanishing layer 347 corresponding to the second display region may be a transparent layer, or the portion of the vanishing layer 347 corresponding to the second display region may be a film layer made of other material with low haze, or the portion of the vanishing layer 347 corresponding to the second display region may not be formed when the vanishing layer 347 is formed, as long as the haze of the vanishing layer 347 corresponding to the second display region is high.
In some embodiments, the surface of the cover plate 341 facing the touch layer 32 is provided with a vanishing layer 347, so that the vanishing layer 347 blocks the etched lines. Specifically, the vanishing layer 347 may be fabricated on the cover plate 341 through processes of plating, exposure, development, etching, and the like, for example, a groove may be formed in the first display region on the surface of the cover plate 341 facing the touch layer 32 by etching, and a material having a haze larger than that of the second display region is filled in the groove, so that the vanishing layer 347 is formed on the surface of the cover plate, and thus the thickness of the cover plate layer group 34 is not increased. Alternatively, the cover 341 may be made of glass, sapphire, polyvinyl chloride (PVC), or the like, for protecting the touch layer 32 and other film layers.
In other embodiments, the cover plate layer group 34 further includes a polarizer 345, the polarizer 345 is disposed between the cover plate 341 and the touch layer 32, a vanishing layer 347 is disposed on a surface of the polarizer 345 facing the touch layer 32, or a vanishing layer 347 is disposed on a surface of the polarizer 345 facing away from the touch layer 32, which is equivalent to disposing the vanishing layer 347 on a surface of the polarizer 345 facing or facing away from the touch layer 32, so as to utilize the vanishing layer 347 to shield the etching lines at the touch electrode 321.
In some embodiments, the cover plate layer group 34 further includes an optical adhesive layer 343, the optical adhesive layer 343 is disposed between the cover plate 341 and the touch layer 32 to adhere the cover plate 341 and the polarizer 345 via the optical adhesive layer 343, and a vanishing layer 347 is embedded in the optical adhesive layer 343 to support the vanishing layer 347 by the optical adhesive layer 343.
Further, the optical adhesive layer 343 includes a first sub-adhesive layer and a second sub-adhesive layer, the first sub-adhesive layer and the second sub-adhesive layer are bonded to each other, and the vanishing layer 347 is disposed between the first sub-adhesive layer and the second sub-adhesive layer. In the manufacturing process, a second sub-adhesive layer can be manufactured on the polarizer 345, then the vanishing layer 347 is manufactured on the second sub-adhesive layer, finally the first sub-adhesive layer is manufactured on the vanishing layer 347, the vanishing layer 347 is clamped between the first sub-adhesive layer and the second sub-adhesive layer, and the vanishing layer 347 is arranged in the optical adhesive layer 343, so that the optical adhesive layer 343 can be used for bonding the polarizer 345, the cover plate 341 and other film layers in the cover plate layer group 32, and can also bear the vanishing layer 347.
In some embodiments, the cover plate layer group 34 includes a cover plate 341, an optical adhesive layer 343, a polarizer 345, and a vanishing layer 347, and the cover plate 341 covers the touch layer 32 to protect the display panel 100 through the cover plate 341; the polarizer 345 is disposed between the cover 341 and the touch layer 32 for adjusting the light emitting effect; the optical adhesive layer 343 is disposed between the cover 341 and the polarizer 345 for adhering the cover 341 and the polarizer 345. At least one of the cover plate 341, the optical adhesive layer 343, and the polarizer 345 in the cover plate layer group 34 is provided with a vanishing layer 347, and a projection of the vanishing layer 347 toward the cover plate 341 coincides with the first display area, which is equivalent to the vanishing layer 347 being provided corresponding to the first display area, and further corresponding to the touch electrode 321, so as to shield the etching lines formed by the corresponding touch electrode 321 through the vanishing layer 347, thereby improving the display effect. Equivalently, the shadow eliminating layer 347 is arranged on any one or more film layers of the cover plate layer group 34 and can shield the etching lines formed by the touch electrode 321, and the design can be performed according to actual requirements, which is not limited herein.
In any of the above embodiments, the vanishing layer 347 includes a plurality of patterned structures, and orthographic projections of the patterned structures on the touch layer respectively coincide with the touch electrodes 321 one by one, that is, a portion of the vanishing layer 347 corresponding to the second display area may be a transparent layer, or a portion of the vanishing layer 347 corresponding to the second display area is a film layer made of other material with low haze, or a portion of the vanishing layer 347 corresponding to the second display area is not formed when the vanishing layer 347 is formed, as long as the haze of the vanishing layer 347 corresponding to the second display area is high, so that the display effect of the second display area is not affected.
Further, the shadow eliminating layer 347 is made of any one of nano silver, indium tin oxide, TiAl-based alloy and titanium, and can block the etching lines without affecting the normal display function of the display panel 100.
In still other embodiments, the cover plate layer group 34 includes the cover plate 341, the cover plate 341 covers the touch layer 32, and the portion of the cover plate 314 corresponding to the first display area is subjected to the atomization treatment, so that the haze of the portion of the cover plate 314 corresponding to the first display area is greater than the haze of the portion of the cover plate 314 corresponding to the second display area, thereby shielding the etching lines formed at the touch electrode 321, and when the display panel 100 is observed by naked eyes, the brightness of the display area is uniform, and the final display effect is better.
Based on the same concept, an embodiment of the invention further provides a display module 100, where the display module 100 includes a display panel 10 and a touch module 30, the touch module 30 is stacked on the display panel 10 for sensing a touch action, and the display panel 10 can display an image according to an instruction of the touch action.
Based on the same concept, an embodiment of the invention further provides a display device, which includes the display module 100. The touch display device can be any product or part with a touch display function, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a vehicle-mounted device, a wearable device or an internet of things device.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch module, comprising:
a touch layer having touch electrodes; and
the cover plate layer group is stacked on the touch layer;
the cover plate layer group is provided with a display area, the display area comprises a first display area and a second display area outside the first display area, the orthographic projection of the first display area on the touch layer is superposed with the touch electrode, and the haze of the first display area is larger than that of the second display area.
2. The touch module of claim 1, wherein the cover layer set comprises a cover plate and a shadow eliminating layer, the cover plate is covered on the touch layer, the shadow eliminating layer is disposed between the cover plate and the touch layer, and a haze of a portion of the shadow eliminating layer corresponding to the first display area is greater than a haze of a portion of the shadow eliminating layer corresponding to the second display area.
3. The touch module of claim 2, wherein the shadow eliminating layer comprises a plurality of patterned structures, and an orthogonal projection of all the patterned structures on the touch layer coincides with the touch electrode.
4. The touch module of claim 3, wherein the patterned structure is made of at least one of nano-Ag, ITO, TiAl-based alloy, and Ti.
5. The touch module according to any one of claims 2-4, wherein the vanishing layer is disposed on a surface of the cover plate facing the touch layer.
6. The touch module according to any one of claims 2 to 4, wherein the cover layer group further comprises a polarizer, the polarizer is disposed between the cover plate and the touch layer, and the side of the polarizer facing the touch layer is provided with the shadow eliminating layer; or
The side, opposite to the touch layer, of the polarizer is provided with the vanishing layer.
7. The touch module of any one of claims 2-4, wherein the cover layer set further comprises an optical adhesive layer, the optical adhesive layer is disposed between the cover and the touch layer, and the shadow eliminating layer is embedded in the optical adhesive layer.
8. The touch module of claim 7, wherein the optical adhesive layer comprises a first sub adhesive layer and a second sub adhesive layer, the first sub adhesive layer and the second sub adhesive layer are bonded to each other, and the shadow eliminating layer is disposed between the first sub adhesive layer and the second sub adhesive layer.
9. A display module, comprising a display panel and the touch module of any one of claims 1-8, wherein the touch module is stacked on the display panel.
10. A display device comprising the display module according to claim 9.
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| CN202110643555.8A CN113268165B (en) | 2021-06-09 | 2021-06-09 | Touch module, display module and display device |
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