CN107390956B - Touch screen, display panel and display device - Google Patents
Touch screen, display panel and display device Download PDFInfo
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- CN107390956B CN107390956B CN201710640559.4A CN201710640559A CN107390956B CN 107390956 B CN107390956 B CN 107390956B CN 201710640559 A CN201710640559 A CN 201710640559A CN 107390956 B CN107390956 B CN 107390956B
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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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Position Input By Displaying (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The application discloses a touch screen, a display panel and a display device, which are used for realizing an infrared touch function of remote user operation identification, and are simple in manufacturing process and excellent in product performance. The application provides a touch screen, including a plurality of infrared sensor, infrared sensor includes the source electrode, the drain electrode and is located the active layer between source electrode and the drain electrode, the source electrode is used for receiving external voltage signal, the drain electrode is connected with infrared integrated circuit, the active layer is used for absorbing the infrared ray energy of user's reflection and takes place the carrier transition, form the conducting channel, make source electrode and drain electrode switch on, the source electrode sends voltage signal for infrared integrated circuit, infrared integrated circuit is according to received voltage signal, discern user's operation action.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch screen, a display panel and a display device.
Background
The conventional infrared touch screen has a common structure including an infrared emitting and receiving sensing element arranged on an outer frame of the touch screen, and an infrared detection net is formed on the surface of the screen. The technology needs to form a detection net on the surface of the screen, infrared geminate transistors higher than the surface of the screen can be formed, the infrared geminate transistors belong to a touch range in the range of the infrared geminate transistors, remote user operation identification cannot be carried out, and the function of the technology is similar to that of a capacitive touch screen.
Disclosure of Invention
The embodiment of the application provides a touch screen, a display panel and a display device, which are used for realizing the infrared touch function of remote user operation identification, and are simple in manufacturing process and excellent in product performance.
The touch screen that this application embodiment provided includes: the infrared sensors comprise source electrodes, drain electrodes and active layers located between the source electrodes and the drain electrodes, the source electrodes are used for receiving external voltage signals, the drain electrodes are connected with the infrared integrated circuit, the active layers are used for absorbing infrared energy reflected by users to generate carrier transition to form conductive channels, the source electrodes are conducted with the drain electrodes, the source electrodes send the voltage signals to the infrared integrated circuit, and the infrared integrated circuit identifies user operation behaviors according to the received voltage signals.
According to the touch screen provided by the embodiment of the application, as the touch screen comprises the infrared sensors, the source electrodes of the infrared sensors receive voltage signals, the drain electrodes of the infrared sensors are connected with the infrared integrated circuit, and when infrared rays are reflected to the active layer, the active layer absorbs infrared energy to generate carrier transition, a conductive channel is formed, and the source electrodes and the drain electrodes are conducted, namely, the infrared sensors are conducted. The infrared sensor sends the voltage signal to the infrared integrated circuit, and the infrared integrated circuit identifies the user operation behavior according to the received voltage signal. Therefore, the method and the device can not only realize the identification of remote user operation behaviors (such as remote gesture identification), but also realize close-range fingerprint identification and the like, are convenient for user operation and improve user experience, and can improve the safety and convenience of user operation when being applied to the vehicle-mounted field; and, because this application makes infrared sensor in the touch-sensitive screen for product manufacturing process is simple, and because the signal that infrared sensor in this application produced is instant transmission signal, infrared sensor need not to be connected with storage capacitor, does not need the storage electric charge, consequently can not have the problem of leakage current, and product performance is stable, good.
Optionally, the infrared sensor is disposed on the touch substrate, and the infrared integrated circuit is disposed on the flexible circuit board.
Optionally, the touch substrate includes a glass substrate and a touch electrode on the glass substrate, and the infrared sensor is specifically disposed between the touch electrode and the glass substrate.
The touch screen provided by the embodiment of the application can set the infrared sensor between the touch electrode and the glass substrate, is simple in manufacturing process, for example, can set the infrared sensor and the touch electrode in a one-to-one correspondence manner, and the setting density of the infrared sensor is the same as that of the touch electrode, so that the sensitivity of remote user operation behavior recognition of the touch screen can be improved.
Optionally, the source included in the infrared sensor is connected to the touch electrode through a via hole, and receives a voltage signal provided by the touch electrode.
According to the touch screen provided by the embodiment of the application, the source electrode of the infrared sensor is connected with the touch electrode through the via hole, so that the infrared sensor and the touch electrode share one infrared integrated circuit, the number of the infrared integrated circuits can be saved, and the production cost is reduced.
Optionally, the material used for the active layer comprises lead sulfide.
According to the touch screen provided by the embodiment of the application, the active layer material of the infrared sensor is lead sulfide, the lead sulfide almost has no response in a visible light range, and the maximum photocurrent response can be formed in an infrared band, so that the lead sulfide can better absorb infrared energy to enable a carrier to jump.
Optionally, the infrared sensor further includes a light shielding layer located below the active layer.
The touch screen that this application embodiment provided, active layer below that infrared sensor includes still is equipped with the light shield layer, and the light shield layer can avoid the influence of backlight source to the active layer, prevents that infrared ray that infrared sensor received the backlight emission from making active layer carrier transition, causes infrared sensor to switch on, influences the discernment to user operation action.
Optionally, the material used for the light shielding layer includes molybdenum.
According to the touch screen provided by the embodiment of the application, the light shielding layer is made of molybdenum, and the light shielding layer is almost opaque within a 2200nm wavelength range and has strong light shielding capability.
Optionally, the material used for the source electrode and the drain electrode comprises metal or tin-doped indium oxide.
The display panel provided by the embodiment of the application comprises any one of the touch screens provided by the embodiment of the application.
Optionally, the display device further comprises a display unit located below the touch screen, and a backlight located below the display unit, wherein the backlight is used for emitting infrared light.
The display device provided by the embodiment of the application comprises any one of the display panels provided by the embodiment of the application.
Drawings
Fig. 1 is a schematic structural diagram of an infrared sensor provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a touch screen provided in an embodiment of the present application;
fig. 3 is a schematic view illustrating a position of an infrared sensor on a touch substrate according to an embodiment of the present disclosure;
fig. 4 is a schematic position diagram of an infrared sensor and a touch electrode provided in the present embodiment;
fig. 5 is a schematic structural diagram of an infrared sensor provided in an embodiment of the present application;
fig. 6 is a schematic position diagram of an infrared sensor and a touch electrode provided in the present embodiment;
fig. 7 is a schematic structural diagram of an infrared sensor provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present application.
Detailed Description
The embodiment of the application provides a touch screen, a display panel and a display device, which are used for realizing the infrared touch function of remote user operation identification, and are simple in manufacturing process and excellent in product performance.
The touch screen provided by the embodiment of the application comprises a plurality of infrared sensors, wherein each infrared sensor comprises a source electrode, a drain electrode and an active layer located between the source electrode and the drain electrode, the source electrode is used for receiving a voltage signal from the outside of the infrared sensor, the drain electrode is connected with an infrared integrated circuit, the active layer receives infrared rays reflected by a user, the infrared energy is absorbed to generate carrier transition, a conductive channel is formed, the source electrode and the drain electrode are conducted, namely, the infrared sensor is conducted, the infrared sensor sends the voltage signal to the infrared integrated circuit, and the infrared integrated circuit identifies the operation behavior of the user according to the received voltage signal. Therefore, the method and the device can realize the identification of user operation behaviors (such as remote gesture identification, fingerprint identification and the like), facilitate the user operation and improve the user experience, and can improve the safety and convenience of the user operation when being applied to the vehicle-mounted field; and, because this application makes infrared sensor in the touch-sensitive screen for product manufacturing process is simple, because infrared sensor in this application need not to be connected with storage capacitor, consequently can not have the problem of leakage current, and product property can be stable, good. The user operation behavior may be, for example, a click, a gesture, fingerprint recognition, and the like.
In the embodiment of the present application, the distance (sensitivity) of the signal recognition of the infrared sensor depends on the material, the process, and other factors of the infrared sensor, for example, if the sensitivity of the infrared sensor is high (for example, a new material or process is selected), the recognition distance may be increased accordingly.
Optionally, the touch screen further includes a touch substrate and a flexible circuit board connected to the touch substrate, the infrared sensor is disposed on the touch substrate, the infrared integrated circuit is disposed on the flexible circuit board, for example, the flexible circuit board is disposed at a lower edge of the touch substrate, the infrared integrated circuit is disposed on the flexible circuit board, and the infrared integrated circuit is connected to the infrared sensor through the flexible circuit board.
Optionally, the touch substrate includes a glass substrate and a touch electrode on the glass substrate, and the infrared sensor is specifically disposed between the touch electrode and the glass substrate. The touch substrate is provided with a plurality of touch electrodes, the infrared sensors are arranged corresponding to the touch electrodes, for example, the infrared sensors and the touch electrodes can be arranged in a one-to-one correspondence manner, and the arrangement density of the infrared sensors is the same as that of the touch electrodes, so that the sensitivity of remote user operation behavior recognition of the touch screen can be improved; of course, one infrared sensor may be disposed corresponding to a plurality of touch electrodes. The touch screen provided by the embodiment of the application can be used for arranging the infrared sensor between the touch electrode and the glass substrate, and the manufacturing process is simple.
The touch screen provided by the embodiment of the application further comprises a glass cover plate positioned on the touch substrate. In addition, in the embodiments of the present application, the infrared sensor may also be disposed on the touch electrode, that is, may also be disposed directly on the touch electrode and below the glass cover plate without being disposed between the touch electrode and the glass substrate, and the specific position is not limited in the present application.
Specifically, the touch electrodes included on the touch substrate may be self-capacitance electrodes or mutual capacitance electrodes, and the infrared sensor may correspond to a part of the touch electrodes, for example, a plurality of touch electrodes correspond to one infrared sensor. Of course, the infrared sensors may also correspond to the touch electrodes one to one. No matter which touch electrode is applied, the source electrode of the infrared sensor can be connected with the touch electrode, and optionally, the source electrode included in the infrared sensor is connected with the touch electrode through a via hole to receive a voltage signal provided by the touch electrode. When the infrared sensors are arranged in one-to-one correspondence with the touch electrodes, the infrared sensors are arranged more densely, namely, any one infrared sensor can sense a voltage signal of one touch electrode, so that the gesture recognition sensitivity or the fingerprint recognition sensitivity of the touch screen is improved.
An example of a specific structure of a touch screen provided in an embodiment of the present application is described below with reference to the drawings.
The touch screen provided in the embodiment of the application includes a plurality of infrared sensors, where each infrared sensor has a structure as shown in fig. 1, and includes a source 201, a drain 202, and an active layer 203 located between the source 201 and the drain 202, the source 201 is configured to receive a voltage signal, the drain 202 is connected to an infrared integrated circuit (not shown in the figure), when a user performs an operation on the touch screen (remote gesture or touch), an infrared ray emitted from a backlight source is reflected by a finger of the user, and after receiving the infrared ray reflected by the user, the active layer 203 absorbs infrared ray energy to generate a carrier transition, so as to form a conductive channel, and the source 201 and the drain 202 are connected, that is, the infrared sensor is connected.
It should be noted that the infrared sensor may also include other film layers, such as: the first insulating layer 204, the second insulating layer 205, and the like, which are not described in detail herein.
Optionally, as shown in fig. 2, the touch screen provided in this embodiment of the application includes a touch substrate 301 and a flexible circuit board 302 connected to the touch substrate 301, the flexible circuit board 302 is disposed at a lower edge of the touch substrate 301, the infrared sensor 13 is disposed on the touch substrate 301, specifically, located below the touch electrode 12, the infrared integrated circuit 303 is disposed on the flexible circuit board 302, the infrared integrated circuit 303 is connected to the infrared sensor disposed on the touch substrate 301 through the flexible circuit board 302, when the infrared sensor senses infrared rays reflected by a user, a voltage signal is sent to the infrared integrated circuit 303, and the infrared integrated circuit 303 identifies an operation instruction signal of the user according to the voltage signal. For example: the operation instruction signal of the user may be an identification signal of a fingerprint or a gesture.
Optionally, referring to fig. 3, the touch screen provided in the embodiment of the present application further includes a glass cover plate 14 located on the touch substrate 301, where the touch substrate 301 includes a glass substrate 11 and a touch electrode 12 located on the glass substrate 11, and the infrared sensor 13 is specifically disposed between the touch electrode 12 and the glass substrate 11. Alternatively, the infrared sensor 13 may be disposed between the touch electrode 12 and the glass cover 14.
Specifically, referring to fig. 2, a plurality of touch electrodes 12 are disposed on the touch substrate 301 in a display area (within a dashed line frame in the figure), and the infrared sensor 13 is disposed corresponding to the touch electrodes 12.
The touch screen that this application embodiment provided, correspond a plurality of infrared sensor and touch-control electrode 12 and set up, can correspond setting or partial corresponding setting entirely, all correspond the setting, one-to-one sets up promptly, each touch-control electrode 12 corresponds and sets up an infrared sensor 13, can improve touch screen gesture or fingerprint identification's sensitivity like this, and then improve the display panel gesture of using this touch screen or fingerprint identification's sensitivity, finally make the display device who uses this display panel realize high sensitivity's fingerprint identification or remote gesture identification.
The position relationship between the infrared sensor and the touch electrode provided in the embodiment of the present application is shown in fig. 4, the infrared sensor 13 is located below the touch electrode 12, a source (corresponding to the position of the via 401) included in the infrared sensor 13 is connected to the touch electrode 12 through the via 401, the drain signal line 402 is connected to the drain 202, the touch electrode 12 sends a voltage signal to the source, when a user performs an instruction action, the active layer absorbs infrared energy after receiving the infrared energy blocked by the user to generate a carrier transition, a conductive channel is formed, the source and the drain 202 are connected, that is, the infrared sensor 13 is connected, the infrared sensor 13 sends the voltage signal received by the source and provided by the touch electrode 12 to the infrared integrated circuit 303, and further detects the instruction action performed by the user. In fig. 4, the infrared sensor 13 ' is disposed below the touch electrode 12 ', and similarly, a source (corresponding to the position of the via 401 ') included in the infrared sensor 13 ' is connected to the touch electrode 12 ' through the via 401 ', a drain signal line 402 ' is connected to the drain 202 ', the touch electrode 12 ' sends a voltage signal to the source, when a user performs a command action, the active layer receives infrared rays blocked by the user and absorbs infrared energy to generate carrier transition, so as to form a conductive channel, the source and the drain 202 ' are conducted, that is, the infrared sensor 13 ' is conducted, the infrared sensor 13 ' sends the voltage signal received by the source and provided by the touch electrode 12 ' to the infrared integrated circuit 303, and further detects the command action performed by the user. For example, when the finger of the user slides from left to right, when the finger of the user is above the infrared sensor 13, the infrared sensor 13 is turned on, the drain signal line 402 sends a voltage signal to the infrared integrated circuit 303, and after the finger slides across the infrared sensor 13, the infrared sensor 13 is turned off; when the finger of the user continues to slide to the infrared sensor 13 ', the infrared sensor 13 ' is turned on, the drain signal line 402 ' (which is the same signal line as the drain signal line 402) sends a voltage signal to the infrared integrated circuit 303, and when the finger crosses the infrared sensor 13 ', the infrared sensor 13 ' is turned off, and the infrared integrated circuit 303 detects the user operation behavior through the received voltage signal. It should be noted that, as shown in fig. 4, the infrared sensors and the touch electrodes are not arranged in a one-to-one correspondence manner, but in practical application, the infrared sensors and the touch electrodes may be arranged in a one-to-one correspondence manner, that is, as shown in fig. 2, an infrared sensor is arranged below each touch electrode. In addition, if the touch panel needs to perform fingerprint recognition, the infrared integrated circuit 303 needs to detect the voltage signals of the infrared sensors 13 covered by the finger at the same time, so that each infrared sensor needs to be connected to the drain and the infrared integrated circuit through an independent wire.
The connection mode enables the infrared sensor 13 and the touch electrode 12 to share one infrared integrated circuit 303, saves the number of the infrared integrated circuits 303, has a simple structure, and can reduce the production cost. The infrared integrated circuit, namely the driving IC, can provide voltage signals for the touch electrode and can also realize the identification of user operation behaviors.
In addition, optionally, under the condition that infrared sensor and touch electrode one-to-one set up, can also realize fingerprint identification, utilize the unevenness of fingerprint (the ridge and the valley of fingerprint) promptly for the difference of the semaphore that infrared sensor received, and then realize the discernment of fingerprint.
Specifically, after cutting along the dashed line AA' in fig. 4, the infrared sensor 13 with the via 401 has a structure as shown in fig. 5, the via 401 is disposed on the insulating layer 205, and the touch electrode 12 is covered on the insulating layer 205 and connected to the source 201 through the via 401. In the touch panel provided in the above embodiment, the infrared sensor 13 is specifically disposed between the touch electrode 12 and the glass substrate 11, that is, the infrared sensor 13 is disposed below the touch electrode 12, see fig. 3.
Optionally, the touch screen provided in this embodiment of the application may not be provided with a via hole, when the via hole is not provided, the touch electrode 12 and the infrared sensor 13 do not have a connection relationship, the positional relationship between the touch electrode 12 and the infrared sensor 13 is as shown in fig. 6, the infrared sensor 13 may also be disposed below the touch electrode 12, and of course, may also be disposed above the touch electrode 12 (i.e., between the glass cover plate 14 and the touch electrode 12), the source 201 of the infrared sensor 13 may receive a voltage signal through the source signal line 601, i.e., the source 201 does not need to be connected to the touch electrode 12 through the via hole, and the drain 202 may still transmit a signal through the. Similarly, the infrared sensor 13 'may be disposed below the touch electrode 12', or may be disposed above the touch electrode 12 '(i.e., between the glass cover 14 and the touch electrode 12'), and the source 201 of the infrared sensor 13 may receive the voltage signal through the source signal line 601 ', i.e., the drain 202' may still transmit the signal through the drain signal line 402 ', without being connected to the touch electrode 12' through a via hole.
Optionally, in a touch screen provided by the present application, the material used for the active layer 203 included in the infrared sensor 13 includes lead sulfide.
The lead sulfide material has almost no response in the visible light range, and can form a maximum photocurrent response in the infrared band, so that the lead sulfide can absorb infrared energy to make transition, so that the source 201 and the drain 202 are conducted, and thus the infrared sensor 13 is conducted, it should be noted that other materials having the same function can be selected for the active layer 203 of the infrared sensor 13, but is not limited to any material.
Optionally, as shown in fig. 7, the infrared sensor 13 further includes a light shielding layer 701 located below the active layer 203, the light shielding layer 701 can prevent an influence of a backlight (not shown in the figure) on the active layer 203, and the light shielding layer 701 is disposed below the active layer 203 to prevent infrared rays emitted by the backlight (not shown in the figure) from irradiating the active layer 203, so that the infrared sensor is turned on, thereby ensuring that the infrared sensor is turned on only when a user makes an operation instruction.
Optionally, the material used for the light-shielding layer 701 includes molybdenum (Mo), which is almost opaque in the wavelength range of 2200nm and has strong light-shielding capability, and it should be noted that other materials having the same function may be selected for the light-shielding layer 701 of the infrared sensor, but is not limited to that. In the embodiment of the present application, the wavelength range of the light that can be blocked by Mo is not particularly limited, and may be included in the light blocking range of Mo. For example, when the photosensitive material of the infrared sensor 13 is lead sulfide (PbS), when the wavelength of infrared light is 1200nm, the ionization degree of the PbS is the highest, that is, the conductive effect of the infrared sensor is the best, at this time, the wavelength of 1200nm is in the light shielding range of the light shielding layer molybdenum (Mo), so that the infrared ray emitted by a backlight source (not shown in the figure) can be prevented from irradiating the active layer 203, the infrared sensor is turned on 13, and the infrared sensor can be turned on only when a user makes an operation instruction. Alternatively, the source electrode 201 and the drain electrode 202 may be made of a material including metal or tin-doped indium oxide.
It should be noted that the source electrode 201 and the drain electrode 202 included in the infrared sensor may also be made of other materials having the same function, but the material is not limited to this.
The application provides a display panel, including any one the touch-sensitive screen that this application embodiment provided.
Optionally, the display panel has a structure as shown in fig. 8, and further includes a display unit 802 located below the touch screen 801, and a backlight 803 located below the display unit 802, where an infrared emitter 805 is disposed in the backlight 803, the infrared emitter 805 is used for emitting infrared light, and the touch screen 801 is provided with an infrared sensor 13. The display unit 802 may be, for example, a liquid crystal display unit, or an organic light emitting display unit, and is not limited herein.
As shown in fig. 3, for example, the touch panel 801 includes a touch substrate 301 including a glass substrate 11 and a touch electrode 12, and the touch panel 801 further includes a glass cover 14 located on the touch substrate 301. The infrared sensor 13 included in the touch screen 801 may be located between the glass substrate 11 and the touch electrode 12, and referring to fig. 4, the infrared sensor 13 may be connected to the touch electrode 12 through a via 401; or between the touch electrode 12 and the glass cover 14, as shown in fig. 6, the infrared sensor 13 may be connected to the touch electrode 12 through a source signal line 601. Both the touch electrode 12 and the infrared sensor 13 may include a multilayer structure, which is not described in detail.
In addition, in the embodiment of the present application, the infrared sensor may also be disposed on the touch electrode, and is not limited to be disposed between the touch electrode and the glass substrate, that is, the infrared sensor may also be disposed between the touch electrode and the glass cover plate.
The working principle of the touch screen provided by the application is as follows: the touch electrode 12 generates a voltage signal, the source 201 receives the voltage signal provided by the touch electrode 12, when a user makes an operation instruction action, the infrared ray emitted by the infrared emitter 805 in the backlight 803 is blocked by a hand or other objects, reflected to the infrared sensor 13, and absorbed by the active layer 203 therein to generate a carrier transition, so as to form a conductive channel, and the source 201 is conducted with the drain 202, so that the infrared integrated circuit 303 receives the voltage signal emitted by the infrared sensor 13, and based on the voltage signal, the infrared integrated circuit 303 identifies the operation instruction signal of the user according to a gesture function or a fingerprint function defined by an algorithm (a specific implementation algorithm may be determined according to actual needs) in the infrared integrated circuit 303, for example: fingerprint or gesture recognition signals.
Fig. 9 is a schematic diagram illustrating a display device provided in an embodiment of the present application, where the display device 300 includes any one of the display panels provided in the embodiment of the present application, which implements fingerprint recognition or remote gesture recognition, and the display panel includes any one of the touch screens provided in the embodiment of the present application. The display device provided by the application can be a product with a display function, such as a mobile phone, a PAD, a computer, a television and the like.
To sum up, this application embodiment provides a realize fingerprint identification or remote gesture recognition's touch-sensitive screen, and infrared sensor includes source electrode, drain electrode and is located the active layer of source electrode and drain electrode below, the source electrode is used for receiving external voltage signal, the drain electrode is connected with infrared integrated circuit, the active layer is used for absorbing the infrared energy of user's reflection and takes place the carrier transition, form the conducting channel, make source electrode and drain electrode switch on, the source electrode sends voltage signal to infrared integrated circuit, infrared integrated circuit is according to received voltage signal, discern user operation action, this application embodiment sets up infrared sensor in the touch-sensitive screen, film forming process is simple, realizes the remote user operation discernment of the infrared mode of touch-sensitive screen, and product property is superior.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A touch screen, comprising:
the infrared sensors comprise source electrodes, drain electrodes and active layers positioned between the source electrodes and the drain electrodes, wherein the source electrodes are used for receiving external voltage signals, the drain electrodes are connected with the infrared integrated circuit, the active layers are used for absorbing infrared energy reflected by users to generate carrier transition to form conductive channels, so that the source electrodes and the drain electrodes are conducted, the source electrodes send the voltage signals to the infrared integrated circuit, and the infrared integrated circuit identifies user operation behaviors according to the received voltage signals;
further comprising:
the infrared sensor is arranged on the touch substrate, and the infrared integrated circuit is arranged on the flexible circuit board;
the touch substrate comprises a glass substrate and a touch electrode positioned on the glass substrate, the infrared sensor is arranged between the touch electrode and the glass substrate, and the infrared sensor and the touch electrode are correspondingly arranged.
2. The touch screen of claim 1, wherein the source of the infrared sensor is connected to the touch electrode through a via hole, and receives a voltage signal provided by the touch electrode.
3. The touch screen of claim 1, wherein the active layer comprises lead sulfide.
4. The touch screen of claim 1, wherein the infrared sensor further comprises a light blocking layer located below the active layer.
5. The touch screen of claim 4, wherein the light shielding layer is made of a material comprising molybdenum.
6. The touch screen of any one of claims 1 to 5, wherein the source electrode and the drain electrode are made of a material comprising a metal or tin-doped indium oxide.
7. A display panel characterized by comprising the touch screen according to any one of claims 1 to 6.
8. The display panel according to claim 7, further comprising a display unit located below the touch screen, and a backlight located below the display unit, the backlight being configured to emit infrared light.
9. A display device characterized by comprising the display panel according to claim 7 or 8.
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| CN201710640559.4A CN107390956B (en) | 2017-07-31 | 2017-07-31 | Touch screen, display panel and display device |
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| CN201710640559.4A CN107390956B (en) | 2017-07-31 | 2017-07-31 | Touch screen, display panel and display device |
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| CN107390956A CN107390956A (en) | 2017-11-24 |
| CN107390956B true CN107390956B (en) | 2021-01-29 |
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| US7972898B2 (en) * | 2007-09-26 | 2011-07-05 | Eastman Kodak Company | Process for making doped zinc oxide |
| CN201773244U (en) * | 2010-08-18 | 2011-03-23 | 北京汇冠新技术股份有限公司 | Liquid crystal display |
| CN103207490B (en) * | 2013-03-28 | 2015-10-14 | 北京京东方光电科技有限公司 | A kind of array base palte and manufacture method thereof and display device |
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| CN105893992A (en) * | 2016-05-31 | 2016-08-24 | 京东方科技集团股份有限公司 | Fingerprint identification structure and method and display device |
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2017
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Effective date of registration: 20220923 Address after: 3rd Floor, Building B1, Wanjiang Fortune Plaza, No. 88 Ruixiang Road, Guandou Street, Jiujiang District, Wuhu City, Anhui Province 241000 Patentee after: Wuhu Tianma Automotive Electronics Co.,Ltd. Address before: 201201, 889, Qing Qing Road, Shanghai, Pudong New Area Patentee before: SHANGHAI TIANMA MICRO-ELECTRONICS Co.,Ltd. |