CN113157135A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN113157135A CN113157135A CN202110400267.XA CN202110400267A CN113157135A CN 113157135 A CN113157135 A CN 113157135A CN 202110400267 A CN202110400267 A CN 202110400267A CN 113157135 A CN113157135 A CN 113157135A
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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
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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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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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
Abstract
The invention discloses a display module and a display device, which comprise a display panel and a sensing assembly arranged on the display panel, wherein the sensing assembly comprises: the light-operated sensor comprises a gate electrode layer and a sensing signal line layer arranged above the gate electrode layer; the spacing layer is arranged on the sensing signal line layer; the touch sensor comprises a first electrode group arranged below the spacing layer and a second electrode group arranged on the spacing layer; and a shield disposed under the spacer layer and between the first electrode set and the light control sensor; the invention effectively reduces the signal crosstalk between the light-operated sensor and the touch sensor, simultaneously realizes the high-frequency scanning work of the touch sensor and the light-operated sensor, and is beneficial to improving the composite function of synchronously integrating touch and light control of the display module.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module and a display device with the same.
Background
With the development of large-size display technology and the wide application in various fields, it is also a mainstream trend to integrate various sensors into a display panel, especially a touch sensor and a light control sensor. In the current display devices, most touch sensors are used, and particularly in small-sized mobile phones, simultaneous integration of touch and light control in the display devices is still relatively few, and along with the simultaneous demands of consumers on display devices such as touch and light control and the development of human-computer interaction, the simultaneous integration of touch and light control also becomes a necessary trend in the development of display technologies.
At present, in a display device synchronously integrating touch control and light control, signal crosstalk usually occurs between a touch control sensor and a light control sensor. For example, the transmitting electrode of the touch sensor crosses the sensing signal line layer of the light control sensor to form a parasitic capacitance, and the receiving electrode of the touch sensor crosses the gate electrode layer of the light control sensor to form a parasitic capacitance, so that signals are mutually interfered to influence the integrated synchronous operation of the light control sensor and the touch sensor.
Disclosure of Invention
The embodiment of the invention provides a display module and a display device, which can solve the technical problem that the integration synchronous work of a touch sensor and a light control sensor is influenced due to mutual crosstalk of signals between the touch sensor and the light control sensor.
In order to solve the above technical problem, an embodiment of the present invention provides a display module, which includes a display panel and a sensing assembly disposed on the display panel, where the sensing assembly includes:
the light-operated sensor comprises a gate electrode layer and a sensing signal line layer arranged above the gate electrode layer;
the spacing layer is arranged on the sensing signal line layer;
the touch sensor comprises a first electrode group arranged below the spacing layer and a second electrode group arranged on the spacing layer; and
and the shielding piece is arranged below the spacing layer and positioned between the first electrode group and the light control sensor.
In an embodiment of the invention, the first electrode group, the shielding member and the sensing signal line layer are all disposed in the same layer, and the shielding member is disposed between the first electrode group and the sensing signal line layer.
In an embodiment of the present invention, the first electrode group, the shielding member and the sensing signal line layer are formed in a same process.
In an embodiment of the invention, the first electrode group, the shielding member and the gate electrode layer are disposed in the same layer, and the shielding member is disposed between the first electrode group and the gate electrode layer.
In an embodiment of the invention, the first electrode set, the shielding member and the gate electrode layer are formed in a same process.
In one embodiment of the invention, the first electrode set comprises a plurality of first electrodes, and the shape of the shield matches the shape profile of the plurality of first electrodes.
In an embodiment of the invention, the sensing assembly further includes a signal trace disposed on the same layer as the second electrode group, and the second electrode group and the signal trace are formed in the same process.
In an embodiment of the invention, the material of the second electrode set and the material of the signal trace both include an indium tin oxide material.
In an embodiment of the invention, the display module includes a photoswitch transistor region, the gate electrode layer includes a first gate electrode disposed in the photoswitch transistor region, the sensing signal line layer includes a first source electrode and a first drain electrode disposed in the photoswitch transistor region, the photosensor further includes a first active layer disposed in the photoswitch transistor region, and the first source electrode and the first drain electrode are respectively overlapped with two sides of the first active layer;
the display module further comprises a light shielding layer arranged on the first active layer.
According to the above object of the present invention, a display device is provided, which includes the display module.
The invention has the beneficial effects that: compared with the prior art, the first electrode group, the second electrode group, the gate electrode layer and the sensing signal line layer are respectively arranged in the at least three film layers, so that the distance between the second electrode group and the light-operated sensor film layer can be increased, and the signal crosstalk between the second electrode group and the light-operated sensor can be reduced; and set up the shielding part between first electrode group and light-operated sensor, can reduce the signal crosstalk between first electrode group and the light-operated sensor, and then effectively reduced the signal crosstalk between light-operated sensor and the touch-control sensor, realized touch-control sensor and light-operated sensor simultaneously and kept high frequency scanning work, be favorable to promoting the synchronous integrated touch-control of display module assembly and light-operated complex function.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 2 is an equivalent circuit diagram of a sensing assembly according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a mutual capacitance structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a sensing assembly according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another sensing assembly provided in accordance with an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another sensing assembly provided in accordance with an embodiment of the present invention;
fig. 7 is a schematic view of a manufacturing process structure of a display module according to an embodiment of the present invention;
fig. 8 is a schematic view of a manufacturing process structure of a display module according to an embodiment of the present invention;
fig. 9 is a schematic view of a manufacturing flow structure of a display module according to an embodiment of the present invention;
fig. 10 is a schematic view of a manufacturing process structure of a display module according to an embodiment of the present invention;
fig. 11 is a schematic view of a manufacturing process structure of a display module according to an embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Aiming at the existing display module, the touch control sensor and the light control sensor generate more parasitic capacitance in arrangement, so that signals are mutually interfered, and the integrated synchronous work of the light control sensor and the touch control sensor is further influenced.
In order to solve the above technical problems, an embodiment of the present invention provides a display module, referring to fig. 1, the display module includes a display panel 10 and a sensing element disposed on the display panel 10, where the sensing element includes a light control sensor 22, a touch sensor 23, a shielding element 25, and a spacer layer 24.
The light control sensor 22 includes a gate electrode layer 221 and a sensing signal line layer 222 disposed above the gate electrode layer 221.
The spacer layer 24 is disposed on the sensing signal line layer 222.
The touch sensor 23 includes a first electrode set disposed under the spacer layer 24 and a second electrode set disposed on the spacer layer 24.
A shield 25 is disposed under the spacer layer 24 and between the first electrode set and the photosensor 22.
In the implementation and application process, the first electrode group, the second electrode group, the gate electrode layer 221 and the sensing signal line layer 222 are respectively disposed in at least three film layers, so that the distance between the second electrode group and the film layer of the light-operated sensor 22 can be increased, and the signal crosstalk between the second electrode group and the light-operated sensor 22 can be reduced; and set up shielding part 25 between first electrode group and light-operated sensor 22, can reduce the signal crosstalk between first electrode group and the light-operated sensor 22, and then effectively reduced the signal crosstalk between light-operated sensor 22 and touch-control sensor 23, realized touch-control sensor 23 and light-operated sensor 22 simultaneously and kept high frequency scanning work, be favorable to promoting the synchronous integrated touch-control of display module and light-operated complex function.
Further, referring to fig. 1, the display module includes a display panel 10 and a sensing assembly disposed on one side of the display panel 10, and the display panel 10 is attached to the sensing assembly through an optical adhesive layer 30.
Alternatively, the display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, and the embodiment of the invention takes the display panel 10 as the liquid crystal display panel for example.
The display panel 10 includes an array substrate 11 and a color filter substrate 12 that are disposed opposite to each other, and a liquid crystal layer 13 disposed between the array substrate 11 and the color filter substrate 12.
It should be noted that, the display panel 10 as described above only describes the array substrate 11, the color filter substrate 12 and the liquid crystal layer 13, and these structural layers only briefly describe a part of the structure of the display panel 10, but are not limited thereto. For example, the color filter substrate 12 includes a Black Matrix (BM), an RGB color resist layer, and the array substrate 11 includes a TFT switch, a scan line, a data line, a pixel electrode, a common electrode, and the like. The display panel 10 further includes other display components, for example, an alignment film, a sealant, and the like are disposed between the array substrate 11 and the color film substrate 12, and details of these components can be implemented with reference to the prior art, which are not described herein again.
The sensing assembly includes a substrate 21, a light control sensor 22 disposed on the substrate 21, a touch sensor 23 disposed on the substrate 21, a spacer layer 24 disposed on the substrate 21, and a shielding member 25 disposed on the substrate 21, wherein the light control sensor 22 and the touch sensor 23 are disposed at an interval, and the shielding member 25 is disposed between the light control sensor 22 and the touch sensor 23.
Specifically, the sensing element includes a gate insulating layer 271 disposed on the substrate 21, an interlayer insulating layer 272 disposed on the gate insulating layer 271, a spacer layer 24 disposed on the interlayer insulating layer 272, a packaging glue layer 273 disposed on the spacer layer 24, and a packaging cover 274 disposed on the packaging glue layer 273.
The photosensor 22 includes a gate electrode layer 221 provided on the substrate 21 and covered with a gate insulating layer 271, and a sensing signal line layer 222 provided on the gate insulating layer 271 and covered with an interlayer insulating layer 272; the touch sensor 23 includes a first electrode set disposed under the spacer layer 24 and a second electrode set disposed on the spacer layer 24, wherein the first electrode set may be located between the spacer layer 24 and the substrate 21, and the second electrode set may be located on the upper surface of the spacer layer 24.
Optionally, the shielding element 25 is a shielding wire, and it should be noted that a dc electrical signal is introduced into the shielding wire, and the dc electrical signal is a fixed voltage, and the voltage in the shielding wire is between-20V and 20V, so that signal crosstalk between the first electrode set and the light control sensor 22 can be shielded, and the effect of synchronously integrating touch control and light control is improved.
In the embodiment of the present invention, the shielding element 25 and the first electrode group are disposed at the same layer and at an interval, and the shielding element 25 is located between the first electrode group and the light control sensor 22, wherein the first electrode group includes a plurality of first electrodes 231, and the shielding element 25 is disposed in accordance with the shape profile of the plurality of first electrodes 231, so that the shielding effect of the shielding element 25 is uniform, and the arrangement of the first electrodes 231 is not affected.
Further, referring to fig. 1 and 2, the display module includes a photoswitch transistor area a and a photosensing transistor area B, wherein the gate electrode layer 221 includes a first gate 2211 disposed in the photoswitch transistor area a and a second gate 2212 disposed in the photosensing transistor area B, the sensing signal line layer 222 includes a first source and a first drain disposed in the photoswitch transistor area a and a second source and a second drain disposed in the photosensing transistor area B, the photosensor 22 further includes a first active layer disposed in the photoswitch transistor area a and a second active layer disposed in the photosensing transistor area B, and the first source and the first drain are respectively overlapped with two sides of the first active layer, the second source and the second drain are respectively overlapped with two sides of the second active layer, and the second source is electrically connected with the first drain, to enable transmission of the signal.
The photo sensor 22 includes a switching transistor Tk disposed in the photo switching transistor area a and a photo sensing transistor Tg disposed in the photo sensing transistor area B, wherein the switching transistor Tk includes a first gate 2211, a first source, a first drain and a first active layer, and the photo sensing transistor Tg includes a second gate 2212, a second source, a second drain and a second active layer. The sensing component further includes a light shielding layer 26 disposed on the first active layer, and the light shielding layer 26 is disposed on the spacer layer 24, i.e. the light shielding layer 26 and the first active layer have an overlapping portion in the thickness direction of the display module, and may completely overlap or partially overlap.
In the embodiment of the invention, the light shielding layer 26 may be used to block light from irradiating on the first active layer of the switching transistor Tk to prevent the light from irradiating on the electrical property of the switching transistor Tk, so as to improve the stability of the light control sensor 22, and the light shielding layer 26 may be a black matrix layer to achieve the purpose of light shielding.
It should be noted that the Gate electrode layer 221 further includes a scan line Gate, and the sensing signal line layer 222 further includes a sensing signal line 2221, where the scan line Gate and the sensing signal line 2221 are both connected to the switching transistor Tk.
Referring to fig. 2, the light sensing transistor Tg is connected to the first voltage signal line S1 and the second voltage signal line S2, and transmits an electrical signal in the first voltage signal line S1 to the switching transistor Tk according to the control of an electrical signal in the second voltage signal line S2. The switching transistor Tk is connected to the scanning line Gate and the sensing signal line 2221, and transmits an electric signal transmitted from the light sensing transistor Tg to the sensing signal line 2221 under the control of an electric signal in the scanning line Gate, and both ends of the capacitor C are connected to the light sensing transistor Tg and the switching transistor Tk, respectively. When light irradiates on the photosensitive transistor Tg, the current flowing through the photosensitive transistor Tg changes, and then the electrical signal transmitted to the sensing signal line 2221 changes, so that the identification of the photosensitive process is realized.
Optionally, the voltage range in the scan line Gate includes-15 to 15V, the first voltage signal line S1 and the second voltage signal line S2 are both fixed voltages, specifically, between-10 to 10V, and the sensing signal line 2221 is in a suspended state.
Referring to fig. 3, the touch sensor includes a plurality of first electrode sets arranged in parallel and a plurality of second electrode sets arranged in parallel, wherein the first electrode set includes a plurality of first electrodes 231, the second electrode set includes a plurality of second electrodes 232, and the shapes of the first electrodes 231 and the second electrodes 232 include rhombuses, and since the shielding member 25 is located between the first electrode set and the light control sensor 22, the shielding member 25 is configured in a zigzag shape and configured to match the rhombus shape profile of the first electrodes 231, so that the shielding effect of the shielding member 25 is uniform, and the arrangement of the first electrodes 231 is not affected.
In addition, the display module includes signal traces 275, and the signal traces 275 and the second electrode assembly are disposed on the same layer and can be formed in the same process. The signal traces 275 can be connected to the bonding area of the display module to transmit the driving or display signal to the display area of the display module.
Optionally, the material of the second electrode set and the material of the signal trace 275 both include an indium tin oxide material. In the embodiment of the invention, the second electrode group and the signal routing 275 are arranged in the same process without adding a light shield, so that the process can be saved, the cost can be saved, and the material of the second electrode group is selected from a tin-doped indium oxide material, so that a transparent electrode can be formed, the light transmittance is improved, the aperture opening ratio of the display module is improved, and the display effect is improved.
It should be noted that a gap is formed between the adjacent first electrodes 231 and the second electrodes 232, and in the embodiment of the present invention, the photo sensor 22 may be disposed in the gap between the adjacent first electrodes 231 and the second electrodes 232.
In the present embodiment, the first electrode 231 may be a transmitting electrode and the second electrode 232 may be a receiving electrode, or the first electrode 231 may be a receiving electrode and the second electrode 232 may be a transmitting electrode. The voltage of the transmitting electrode fluctuates between 0V and nV with a set frequency spectrum, n is between 1V and 30V, and the receiving electrode is in a floating state.
Specifically, the following describes, with reference to specific embodiments, the arrangement of the touch sensor 23 and the light control sensor 22 in the sensing assembly provided in the embodiment of the present invention.
In an embodiment of the invention, referring to fig. 1, fig. 2 and fig. 3, the first electrode set, the shielding element 25 and the sensing signal line layer 222 are all disposed at the same layer and at intervals, and the shielding element 25 is disposed between the first electrode set and the sensing signal line layer 222, that is, the first electrode set is disposed on the gate insulating layer 271 and covered by the interlayer insulating layer 272, and the second electrode set is disposed on the interlayer 24 and disposed at the same layer and at intervals with the light shielding layer 26.
In this embodiment, the first electrode group includes a plurality of first electrodes 231, the second electrode group includes a plurality of second electrodes 232, and the plurality of first electrodes 231 and the plurality of second electrodes 232 are in a mutual capacitance structure, wherein the first electrodes 231 include transmitting electrodes, and the second electrodes 232 include receiving electrodes.
The transmitting electrode and the sensing signal line layer 222 are located on the same layer and are spaced apart from each other, the sensing signal line layer 222 includes a sensing signal line 2221, and the shielding member 25 is located between the transmitting electrode and the sensing signal line 2221 to further shield signal crosstalk between the transmitting electrode and the sensing signal line 2221. And the receiving electrode is located on the spacing layer 24, and the distance between the receiving electrode and the gate electrode layer 221 and the sensing signal line 2221 is increased, so that the influence of signal crosstalk can be effectively reduced, and the touch control and light control composite function of the display module is improved.
Further, each of the transmitting electrodes and each of the receiving electrodes have a rhombus shape, and the shielding member 25 is located between the transmitting electrode and the sensing signal line 2221, so that the shielding member 25 is matched with the rhombus shape of the transmitting electrode, that is, the shielding member 25 is arranged in a zigzag shape, and the shielding effect of the shielding member 25 is uniform, and the arrangement of the transmitting electrodes is not affected.
In addition, the sensing assembly further comprises a signal routing 275 connected to the binding region, wherein the material of the second electrode 232 comprises a tin-doped indium oxide material, and the receiving electrode and the signal routing 275 can be patterned by the tin-doped indium oxide material to obtain an electrode pattern and a routing pattern, and are prepared in the same process, no additional photomask is needed, and the process is saved.
In another embodiment of the present invention, please refer to fig. 2 and fig. 4, which is different from the first embodiment in that the first electrode 231 includes a receiving electrode, and the second electrode 232 includes a transmitting electrode.
The receiving electrodes and the sensing signal line layer 222 are located on the same layer and are spaced apart from each other, the sensing signal line layer 222 includes sensing signal lines 2221, and the shielding member 25 is located between the receiving electrodes and the sensing signal lines 2221 to further shield signal crosstalk between the receiving electrodes and the sensing signal lines 2221. And the emitting electrode is located on the spacing layer 24, and the distance between the emitting electrode and the gate electrode layer 221 and the sensing signal line 2221 is increased, so that the influence of signal crosstalk can be effectively reduced, and the touch control and light control composite function of the display module is improved.
Further, each of the transmitting electrodes and each of the receiving electrodes have a rhombus shape, and since the shielding member 25 is located between the receiving electrode and the sensing signal line 2221, the shielding member 25 is configured to match the rhombus shape profile of the receiving electrode, that is, the shielding member 25 is configured to be a zigzag shape, so that the shielding effect of the shielding member 25 is uniform, and the arrangement of the receiving electrodes is not affected.
In addition, the sensing assembly further comprises a signal routing 275 connected to the binding region, wherein the material of the second electrode group comprises a tin-doped indium oxide material, and the transmitting electrode and the signal routing 275 can be patterned by the tin-doped indium oxide material to obtain an electrode pattern and a routing pattern, and are prepared in the same process, no additional photomask is needed, and the process is saved.
In another embodiment of the present invention, please refer to fig. 2 and fig. 5, which are different from the first embodiment in that the first electrode set, the shielding member 25 and the gate electrode layer 221 are located at the same layer and spaced apart from each other, and the shielding member 25 is located between the first electrode set and the gate electrode layer 221.
In the present embodiment, the first electrode 231 includes a transmitting electrode, and the second electrode 232 includes a receiving electrode.
The emitter electrode and the gate electrode layer 221 are located at the same layer and are spaced apart, and the shielding member 25 is located between the emitter electrode and the gate electrode layer 221 to further shield signal crosstalk between the emitter electrode and the gate electrode layer 221. And the receiving electrode is located on the spacing layer 24, and the distance between the receiving electrode and the gate electrode layer 221 and the sensing signal line 2221 is increased, so that the influence of signal crosstalk can be effectively reduced, and the touch control and light control composite function of the display module is improved.
Further, each of the transmitting electrodes and each of the receiving electrodes have a rhombus shape, and the shielding member 25 is located between the transmitting electrode and the gate electrode layer 221, so that the shielding member 25 is arranged to match the rhombus shape profile of the transmitting electrode, that is, the shielding member 25 is arranged to have a zigzag shape, and the shielding effect of the shielding member 25 is uniform without affecting the arrangement of the transmitting electrodes.
In addition, the sensing assembly further comprises a signal routing 275 connected to the binding region, wherein the material of the second electrode 232 comprises a tin-doped indium oxide material, and the receiving electrode and the signal routing 275 can be patterned by the tin-doped indium oxide material to obtain an electrode pattern and a routing pattern, and are prepared in the same process, no additional photomask is needed, and the process is saved.
In another embodiment of the present invention, please refer to fig. 2 and fig. 6, which are different from the previous embodiment in that the first electrode 231 includes a receiving electrode, and the second electrode 232 includes a transmitting electrode.
The receiving electrode and the gate electrode layer 221 are located at the same layer and are spaced apart, and the shielding member 25 is located between the receiving electrode and the gate electrode layer 221 to further shield signal crosstalk between the receiving electrode and the gate electrode layer 221. And the emitting electrode is located on the spacing layer 24, and the distance between the emitting electrode and the gate electrode layer 221 and the sensing signal line 2221 is increased, so that the influence of signal crosstalk can be effectively reduced, and the touch control and light control composite function of the display module is improved.
Further, each of the transmitting electrodes and each of the receiving electrodes have a rhombus shape, and since the shielding member 25 is located between the receiving electrode and the gate electrode layer 221, the shielding member 25 is configured to match the rhombus shape profile of the receiving electrode, that is, the shielding member 25 is configured to be a zigzag shape, so that the shielding effect of the shielding member 25 is uniform, and the arrangement of the receiving electrodes is not affected.
In addition, the sensing assembly further comprises a signal routing 275 connected to the binding region, wherein the material of the second electrode 232 comprises a tin-doped indium oxide material, and the emitting electrode and the signal routing 275 can be prepared in the same process by obtaining an electrode pattern and a routing pattern through patterning the tin-doped indium oxide material, without adding a light shield, thereby saving the process.
In summary, in the embodiment of the present invention, the first electrode group, the second electrode group, the gate electrode layer 221 and the sensing signal line layer 222 are respectively disposed in at least three film layers, so that the distance between the second electrode group and the film layer of the light control sensor 22 can be increased, and the signal crosstalk between the second electrode group and the light control sensor 22 can be reduced; and set up shielding part 25 between first electrode group and light-operated sensor 22, can reduce the signal crosstalk between first electrode group and the light-operated sensor 22, and then effectively reduced the signal crosstalk between light-operated sensor 22 and touch-control sensor 23, realized touch-control sensor 23 and light-operated sensor 22 simultaneously and kept high frequency scanning work, be favorable to promoting the synchronous integrated touch-control of display module and light-operated complex function.
In addition, an embodiment of the present invention further provides a method for manufacturing a display module according to the above-mentioned embodiment, please refer to fig. 1, fig. 2, fig. 7, fig. 8, fig. 9, fig. 10, and fig. 11, which is described by taking the manufacturing method of the display module shown in fig. 1 as an example, and the manufacturing method includes:
a substrate 21 is provided, a first metal layer is prepared on the substrate 21, and is patterned to form a gate electrode layer 221, and the gate electrode layer 221 includes a first gate 2211 of the switching transistor Tk and a second gate 2212 of the sensing transistor Tg, and a gate insulating layer 271 is formed to cover the gate electrode layer 221.
A first active layer of the switching transistor Tk is formed on the gate insulating layer 271 corresponding to the first gate electrode 2211, and an active layer of the photo transistor Tg is formed on the gate insulating layer 271 corresponding to the second gate electrode 2212.
A second metal layer is prepared on the gate insulating layer 271, and is patterned to form a first electrode group, a shielding member 25, and a sensing signal line layer 222, wherein the first electrode group includes a plurality of first electrodes 231, and the sensing signal line layer 222 includes a first source and a first drain of the switching transistor Tk, a second source and a second drain of the photo transistor Tg, and a sensing signal line 2221.
An interlayer insulating layer 272 is formed to cover the first electrode 231, the first source electrode, the first drain electrode, the second source electrode, the second drain electrode, and the sensing signal line 2221, and a spacer layer 24 is formed on the interlayer insulating layer 272.
A black matrix layer is formed on the spacer layer 24 corresponding to the switching transistor Tk to form a light shielding layer 26, and the light shielding layer 26 correspondingly shields the upper side of the switching transistor Tk to shield the ambient light from irradiating the first active layer, so as to prevent the electrical property of the switching transistor Tk from being affected.
Openings are formed in the spacing layer 24 and the interlayer insulating layer 272, an ITO (tin-doped indium oxide) layer is formed on the spacing layer 24, patterning is carried out on the ITO layer to form a second electrode group and a signal wire 275, and the signal wire 275 penetrates through the openings to be connected with the second drain electrode of the photosensitive transistor Tg, wherein the second electrode group comprises a plurality of second electrodes 232.
An encapsulation adhesive layer 273 is formed to cover the second electrode set, the light-shielding layer 26 and the signal traces 275, and the material of the encapsulation adhesive layer 273 may be OCA optical adhesive.
A package lid 274 is formed on the package glue layer 273.
The sensing assembly is attached to the display panel 10, and one side of the substrate 21 facing away from the touch sensor 23 and the light control sensor 22 is attached to the display panel 10 through the optical adhesive layer 30.
In the embodiment of the present invention, the first electrode 231 is a transmitting electrode, and the second electrode 232 is a receiving electrode, or the first electrode 231 is a receiving electrode, and the second electrode 232 is a transmitting electrode, which is not limited herein.
The embodiment of the invention also provides a display device which comprises the display module.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display module and the display device provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a display module assembly, its characterized in that, include display panel and set up in sensing component on the display panel, sensing component includes:
the light-operated sensor comprises a gate electrode layer and a sensing signal line layer arranged above the gate electrode layer;
the spacing layer is arranged on the sensing signal line layer;
the touch sensor comprises a first electrode group arranged below the spacing layer and a second electrode group arranged on the spacing layer; and
and the shielding piece is arranged below the spacing layer and positioned between the first electrode group and the light control sensor.
2. The display module of claim 1, wherein the first electrode set, the shielding member and the sensing signal line layer are disposed on the same layer, and the shielding member is disposed between the first electrode set and the sensing signal line layer.
3. The display module of claim 2, wherein the first electrode set, the shielding member and the sensing signal line layer are formed in a same process.
4. The display module of claim 1, wherein the first electrode set, the shielding member and the gate electrode layer are disposed in the same layer, and the shielding member is disposed between the first electrode set and the gate electrode layer.
5. The display module of claim 4, wherein the first electrode set, the shielding member and the gate electrode layer are formed in a same process.
6. The display module of claim 1, wherein the first electrode set comprises a plurality of first electrodes, and the shape of the shielding member matches the shape profile of the plurality of first electrodes.
7. The display module of claim 1, wherein the sensing assembly further comprises a signal trace disposed on the same layer as the second electrode assembly, and the second electrode assembly and the signal trace are formed in the same process.
8. The display module of claim 7, wherein the material of the second electrode set and the material of the signal trace comprise tin-doped indium oxide.
9. The display module according to claim 1, wherein the display module comprises a photoswitch transistor region, the gate electrode layer comprises a first gate electrode disposed in the photoswitch transistor region, the sensing signal line layer comprises a first source electrode and a first drain electrode disposed in the photoswitch transistor region, the photosensor further comprises a first active layer disposed in the photoswitch transistor region, and the first source electrode and the first drain electrode overlap two sides of the first active layer respectively;
the display module further comprises a light shielding layer arranged on the first active layer.
10. A display device, characterized in that the display device comprises a display module according to any one of claims 1 to 9.
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| CN202110400267.XA CN113157135A (en) | 2021-04-14 | 2021-04-14 | Display module and display device |
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| CN202110400267.XA CN113157135A (en) | 2021-04-14 | 2021-04-14 | Display module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112034645A (en) * | 2020-09-03 | 2020-12-04 | 深圳市华星光电半导体显示技术有限公司 | Display device and method for manufacturing the same |
| CN112306304A (en) * | 2020-10-16 | 2021-02-02 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN112415797A (en) * | 2020-11-10 | 2021-02-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN112612381A (en) * | 2020-12-29 | 2021-04-06 | 深圳市华星光电半导体显示技术有限公司 | Sensor device and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112034645A (en) * | 2020-09-03 | 2020-12-04 | 深圳市华星光电半导体显示技术有限公司 | Display device and method for manufacturing the same |
| CN112306304A (en) * | 2020-10-16 | 2021-02-02 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
| CN112415797A (en) * | 2020-11-10 | 2021-02-26 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN112612381A (en) * | 2020-12-29 | 2021-04-06 | 深圳市华星光电半导体显示技术有限公司 | Sensor device and display device |
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