CN112799548B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN112799548B
CN112799548B CN202110230574.8A CN202110230574A CN112799548B CN 112799548 B CN112799548 B CN 112799548B CN 202110230574 A CN202110230574 A CN 202110230574A CN 112799548 B CN112799548 B CN 112799548B
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China
Prior art keywords
layer
display panel
electrode
light
semiconductor layer
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CN202110230574.8A
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Chinese (zh)
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CN112799548A (en
Inventor
查宝
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN202110230574.8A priority Critical patent/CN112799548B/en
Publication of CN112799548A publication Critical patent/CN112799548A/en
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Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
    • H01L27/1244—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits for preventing breakage, peeling or short circuiting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1248—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement

Abstract

The embodiment of the application discloses a display panel and a display device, wherein the display panel comprises an array substrate, a color film substrate, a light control device and a touch control device; the light control device comprises a light sensor and a switch tube connected with the light sensor; the touch device comprises a transmitting electrode and a receiving electrode which are positioned at different layers with the transmitting electrode; the light control device is arranged on the array substrate or/and the color film substrate, and the touch control device is arranged on the array substrate or/and the color film substrate. The touch control function and the light control function are integrated in the display panel, the display panel is provided with the touch control function and the light control function, the touch control function and the light control function required by customers can be met simultaneously, and meanwhile, the light control device and the touch control device are integrated in the display panel in an embedded mode, so that the overall thickness and the cost of the display panel can be reduced.

Description

Display panel and display device
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of display technology, in order to reduce costs, integration of various sensors into a display panel, such as integration of a touch sensor and a light sensor into a display panel, has become a mainstream trend in the industry.
However, in the existing display panel, only the touch sensor or only the light sensor is generally integrated, which cannot meet the touch and light control functions required by the customer.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which are used for solving the problem that the touch control and light control functions required by customers cannot be simultaneously met due to the fact that only a touch control sensor or only a light sensor is generally integrated in the existing display panel.
The embodiment of the application provides a display panel, which comprises:
an array substrate including a driving transistor;
the color film substrate is arranged opposite to the array substrate;
the liquid crystal layer is arranged between the color film substrate and the array substrate;
the light control device comprises a light sensor and a switch tube connected with the light sensor;
the touch device comprises a transmitting electrode and a receiving electrode which is positioned at a different layer from the transmitting electrode;
the light control device is arranged on the array substrate or/and the color film substrate, and the touch control device is arranged on the array substrate or/and the color film substrate.
Optionally, in some embodiments of the present application, the driving transistor includes a first gate electrode, a first semiconductor layer, and a first source drain layer; the switch tube comprises a second grid electrode, a second semiconductor layer and a second source drain electrode layer; the photosensitive sensor comprises a third grid electrode, a third semiconductor layer and a third source drain electrode layer;
wherein the first gate, the second gate and the third gate are arranged on the same layer; the first semiconductor layer, the second semiconductor layer and the third semiconductor layer are arranged on the same layer; the first source drain electrode layer is arranged on the first semiconductor layer, the second source drain electrode layer is arranged on the second semiconductor layer, and the third source drain electrode layer is arranged on the third semiconductor layer.
Optionally, in some embodiments of the present application, the array substrate includes:
a first substrate base plate;
a gate insulating layer disposed on the first substrate;
a passivation layer disposed on the gate insulating layer;
a common electrode disposed on the passivation layer;
the first grid electrode, the second grid electrode and the third grid electrode are arranged on the first substrate, and the grid electrode insulating layer covers the first grid electrode, the second grid electrode and the third grid electrode; the first semiconductor layer, the second semiconductor layer and the third semiconductor layer are arranged on the gate insulating layer, and the passivation layer covers the first semiconductor layer, the second semiconductor layer, the third semiconductor layer, the first source drain layer, the second source drain layer and the third source drain layer.
Optionally, in some embodiments of the present application, the emitter electrode is disposed in the same layer as the common electrode.
Optionally, in some embodiments of the present application, the color film substrate includes a second substrate, and the receiving electrode is disposed on a side of the second substrate, which is close to the array substrate.
Optionally, in some embodiments of the present application, the display panel further includes a first scan line, a second scan line, and a first power line disposed along a first direction, and a data line, a signal reading line, and a second power line disposed along a second direction;
the control end of the driving transistor is connected with the first scanning line, and the first end of the driving transistor is connected with the data line; the control end of the switching tube is connected with the second scanning line, the first end of the switching tube is connected with the first end of the photosensitive sensor, and the second end of the switching tube is connected with the signal reading line; the control end of the light sensing sensor is connected with the first power line, and the second end of the light sensing sensor is connected with the second power line.
Optionally, in some embodiments of the present application, the driving transistor is provided in a plurality, and a plurality of the driving transistor arrays are distributed; the light control devices are arranged in a plurality, and the light control devices are distributed in an array; the first scanning lines and the second scanning lines are respectively provided with a plurality of first scanning lines, the first scanning lines are distributed along the second direction, and the second scanning lines are distributed along the second direction;
one of the first scanning lines is correspondingly connected with one row of the driving transistors, and one of the second scanning lines is correspondingly connected with one row of the switching transistors of the light control device.
Optionally, in some embodiments of the present application, the display panel further includes a driving module, where the driving module is connected to a control terminal of the driving transistor, a control terminal of the switching tube, and the emitter electrode;
the driving module is used for providing a driving scanning signal for the control end of the driving transistor at a first time within a frame time, providing a light-operated scanning signal for the control end of the switching tube at a second time within a frame time, and providing a touch scanning signal for the transmitting electrode at a third time within a frame time.
Optionally, in some embodiments of the present application, the first time and the second time are alternately arranged in a first period and the third time is located in a second period within a frame time.
Accordingly, embodiments of the present application also provide a display device, where the display device includes a beam emitter and a display panel as described in any of the foregoing embodiments, the beam emitter is configured to emit a projection beam, and a light control device on the display panel is configured to sense the projection beam projected on the display panel.
The beneficial effects of the embodiment of the application are that: the touch control function and the light control function are integrated in the display panel simultaneously, the display panel has the touch control function and the light control function simultaneously, the touch control function and the light control function required by customers can be met simultaneously, meanwhile, the light control device and the touch control device are integrated in the display panel in an embedded mode, the overall thickness and the cost of the display panel can be reduced, the display driving, the touch control function and the light control function work in different time, mutual interference is avoided, and the problem of mutual crosstalk among the display driving, the touch control function and the light control function can be effectively solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit structure diagram of a driving transistor, a touch device and a light control device according to an embodiment of the present application;
fig. 3 is a schematic diagram of scanning timing sequences of a driving transistor, a touch device and a light control device according to an embodiment of the present application;
fig. 4 is a schematic layout diagram of a driving transistor and a light control device according to an embodiment of the present application;
fig. 5 is a schematic diagram of scanning timing of a scanning line and a transmitting electrode according to an embodiment of the present application.
Reference numerals illustrate:
10. a driving transistor; 11. a first gate; 12. a first semiconductor layer; 13. a first source/drain layer; 20. a light control device; 21. a switching tube; 211. a second gate; 212. a second semiconductor layer; 213. a second source/drain layer; 22. a light-sensitive sensor; 221. a third gate; 222. a third semiconductor layer; 223. a third source/drain layer; 30. an array substrate; 31. a first substrate base plate; 32. a gate insulating layer; 33. a passivation layer; 34. a common electrode; 35. a first alignment film layer; 40. a color film substrate; 41. a second substrate base plate; 42. a color film layer; 421. a color block; 422. a light shielding layer; 43. a second alignment film layer; 50. a liquid crystal layer; 60. a driving module; 70. a beam emitter.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The embodiment of the application provides a display panel, a driving method thereof and a display device. The following will describe in detail. The following description of the embodiments is not intended to limit the preferred embodiments.
The application provides a display panel, as shown in fig. 1 and 2, the display panel includes a light control device 20, a touch control device, an array substrate 30, a color film substrate 40 opposite to the array substrate 30, and a liquid crystal layer 50 disposed between the array substrate 30 and the color film substrate 40.
Wherein the array substrate 30 includes a driving transistor 10, and the driving transistor 10 is used for display driving of the display panel; the light control device 20 is used for sensing light control operation so as to enable the display panel to have a light control function; the touch device is used for sensing touch operation so that the display panel has a touch function.
In an embodiment, the display panel may further include a reading module, and the reading module may be a detection IC; the reading module is connected to the touch device and the light control device 20, and is used for reading the touch sensing signal transmitted by the touch device and the light control sensing signal transmitted by the light control device 20.
It should be noted that, by integrating the driving transistor 10, the touch device and the light control device 20 in the display panel, when the display panel needs to be touched in a short distance, the display panel is touched by a finger or a stylus, and the touch device at a corresponding position on the display panel senses a touch operation and transmits a touch sensing signal to the reading module, and the reading module controls the display panel to respond correspondingly according to the touch sensing signal, so as to realize a touch function.
When the display panel needs to be remotely operated, for example, when the display panel is used for displaying in a conference room, a display person transmits a projection beam through a handheld beam emitter and the like, the light control device 20 transmits a light control induction signal to the reading module when sensing the projection beam projected on the display panel, the reading module controls the display panel to respond correspondingly according to the light control induction signal so as to realize a light control function, the display panel simultaneously has a touch control function and a light control function, the touch control function and the light control function required by a customer can be simultaneously met, the display panel can realize the functions of short-range touch control and long-range light control, and the composite function of the display panel is facilitated to be promoted.
Specifically, the light control device 20 includes a photosensor 22 and a switch tube 21 connected to the photosensor 22, where the photosensor 22 is configured to sense a light change and output a corresponding light control sensing signal, and a light sensing band of the photosensor 22 may be visible light or invisible light such as infrared light; the switch tube 21 is used for controlling the on-off state between the photosensitive sensor 22 and the reading module, when the switch tube 21 is turned on, the reading module receives the light-operated induction signal output by the photosensitive sensor 22, and the driving transistor 10, the photosensitive sensor 22 and the switch tube 21 can be thin film transistors.
Specifically, the touch device includes a transmitting electrode Tx and a receiving electrode Rx located at a different layer from the transmitting electrode Tx.
The transmitting electrodes Tx and the receiving electrodes Rx are respectively provided with a plurality of transmitting electrodes Tx and Rx, the transmitting electrodes Tx are arranged along a first direction, and the plurality of transmitting electrodes Tx are arranged at intervals along a second direction; the receiving electrodes Rx are arranged along the second direction, a plurality of receiving electrodes Rx are arranged at intervals along the first direction, and a plurality of transmitting electrodes Tx and a plurality of receiving electrodes Rx are mutually intersected to form a grid structure.
It can be understood that the touch device is a mutual capacitive touch device, the transmitting electrode Tx and the receiving electrode Rx form a touch capacitance at the intersection, the transmitting electrode Tx is used for accessing a touch scanning signal and transmitting an electric signal, the receiving electrode Rx outputs a corresponding touch sensing signal according to the capacitance of the touch capacitance, and the reading module can be connected with the receiving electrode Rx so as to be used for receiving the touch sensing signal.
It should be noted that, by touching the display panel with a finger or a stylus, the capacitance of a touch capacitor formed by the transmitting electrode Tx and the receiving electrode Rx at the touch position changes, the receiving electrode Rx sends a corresponding touch sensing signal to the reading module, and the reading module determines a touch point according to the touch sensing signal and controls the display panel to respond correspondingly.
It should be noted that the first direction and the second direction may be perpendicular to each other, for example, the first direction is a transverse direction, and the second direction is a longitudinal direction.
Specifically, the light control device 20 is disposed on the array substrate 30 or/and the color film substrate 40, and the touch control device is disposed on the array substrate 30 or/and the color film substrate 40.
It will be appreciated that the touch function and the light control function are integrated in the display panel at the same time, and the light control device 20 and the touch control device are integrated in the display panel in an embedded manner, so that the overall thickness and cost of the display panel can be reduced.
Specifically, the driving transistor 10 includes a first gate electrode 11, a first semiconductor layer 12, and a first source-drain electrode layer 13; the switching tube 21 includes a second gate electrode 211, a second semiconductor layer 212, and a second source/drain electrode layer 213; the photosensor 22 includes a third gate 221, a third semiconductor layer 222, and a third source/drain layer 223, and a first end of the second source/drain layer 213 is connected to a first end of the third source/drain layer 223.
The first gate11 is used for accessing a driving scanning signal, and the second gate 211 is used for accessing a light-operated scanning signal.
It can be understood that the first gate11 is a control end of the driving transistor 10, and the driving transistor 10 is turned on when the first gate11 is connected to a driving scanning signal; the second gate 211 is a control end of the switching tube 21, and the switching tube 21 is turned on when the second gate 211 is connected to the light-operated scanning signal; the third gate 221 is a control terminal of the photosensor 22.
Specifically, the first semiconductor layer 12, the second semiconductor layer 212, and the third semiconductor layer 222 may be made of hydrogenated amorphous silicon, germanium, or silicon germanium.
In an embodiment, the first gate11, the second gate 211 and the third gate 221 are disposed in the same layer; the first semiconductor layer 12, the second semiconductor layer 212 and the third semiconductor layer 222 are arranged in the same layer; the first source/drain electrode layer 13 is disposed on the first semiconductor layer 12, the second source/drain electrode layer 213 is disposed on the second semiconductor layer 212, and the third source/drain electrode layer 223 is disposed on the third semiconductor layer 222.
The first gate11, the second gate 211 and the third gate 221 may be formed by a single process using the same material; the first semiconductor layer 12, the second semiconductor layer 212 and the third semiconductor layer 222 may be formed by one process using the same material; the first source/drain electrode layer 13, the second source/drain electrode layer 213 and the third source/drain electrode layer 223 may be formed by using the same material through one process, so as to reduce the overall thickness and cost of the display panel.
Specifically, the array substrate 30 includes a first substrate 31, a gate insulating layer 32 disposed on the first substrate 31, a passivation layer 33 disposed on the gate insulating layer 32, and a common electrode 34 disposed on the passivation layer 33.
Wherein the first gate11, the second gate 211, and the third gate 221 are disposed on the first substrate 31, and the gate insulating layer 32 covers the first gate11, the second gate 211, and the third gate 221; the first semiconductor layer 12, the second semiconductor layer 212, and the third semiconductor layer 222 are disposed on the gate insulating layer 32, and the passivation layer 33 covers the first semiconductor layer 12, the second semiconductor layer 212, the third semiconductor layer 222, the first source drain layer 13, the second source drain layer 213, and the third source drain layer 223.
In one embodiment, the transmitting electrode Tx and the common electrode 34 are arranged in the same layer to reduce the overall thickness of the display panel.
The common electrode 34 may be made of transparent conductive metal, the common electrode 34 is spaced from the transmitting electrode Tx, and the transmitting electrode Tx and the common electrode 34 are formed by the same material through one process, so as to reduce the production cost.
In an embodiment, the common electrode 34 and the transmitting electrode Tx are alternately arranged along the second direction, so as to facilitate the arrangement and arrangement of the common electrode 34 and the transmitting electrode Tx.
In an embodiment, the array substrate 30 may further include a pixel electrode disposed at the same layer as the common electrode 34, and the pixel electrode is electrically connected to the first source or the first drain of the first source/drain layer 13.
In an embodiment, the array substrate 30 further includes a first alignment layer 35 covering the common electrode 34 and the transmitting electrode Tx.
In an embodiment, the color filter substrate 40 includes a second substrate 41, and the receiving electrode Rx is disposed on a side of the second substrate 41 close to the array substrate 30.
It should be noted that, the touch function and the light control function are integrated in the display panel at the same time, and the touch device is integrated in the display panel in an embedded manner, so that the overall thickness and cost of the display panel can be reduced, and meanwhile, the transmitting electrode Tx and the receiving electrode Rx are respectively located on the array substrate 30 and the color film substrate 40, so that the influence of the arrangement of the transmitting electrode Tx and the receiving electrode Rx on other wires in the display panel can be reduced.
It should be noted that the light control device 10 may also be disposed on the color film substrate 40, and the transmitting electrode Tx and the receiving electrode Rx of the touch device may also be disposed on the array substrate 30 or the color film substrate 40.
In an embodiment, the color film substrate 40 further includes a color film layer 42 disposed on a side of the second substrate 41 near the array substrate 30, and the receiving electrode Rx is disposed on a side of the color film layer 42 near the array substrate 30.
The color film layer 42 includes a plurality of color blocks 421 spaced apart from each other and a light shielding layer 422 disposed between the adjacent color blocks 421, and the orthographic projection of the light shielding layer 422 on the first substrate 31 covers the orthographic projections of the first semiconductor layer 12 and the second semiconductor layer 212 on the first substrate 31, so as to prevent the first semiconductor layer 12 and the second semiconductor layer 212 from being misoperated due to the irradiation of external light.
It should be noted that, the color film layer 42 may also be disposed on the array substrate 30, for example, the color film layer 42 is disposed on the passivation layer 33, and the common electrode 34 and the transmitting electrode Tx are disposed above the color film layer 42.
In an embodiment, the color filter substrate 40 further includes a common electrode disposed on the same layer as the receiving electrode Rx, the common electrode is disposed opposite to the pixel electrode, and the liquid crystal is driven to rotate by a voltage difference between the pixel electrode and the common electrode.
In an embodiment, the color film substrate 40 further includes a second alignment film layer 43 covering the color film layer 42 and the receiving electrode Rx.
It should be noted that the display panel may also adopt a COA (Color On Array) architecture, and the display mode of the display panel may be VA, IPS, TN or FFS mode.
As shown in fig. 2, the display panel further includes a first scan line Gate1, a second scan line Gate2, and a first power line SVGG disposed along a first direction, and a data line Date, a signal read line RL, and a second power line SVDD disposed along a second direction.
The control terminal of the driving transistor 10 is connected to the first scan line Gate1, the first scan line Gate1 is configured to provide the driving scan signal for the control terminal of the driving transistor 10, and the first terminal of the driving transistor 10 is connected to the data line Gate; the control end of the switch tube 21 is connected with the second scan line Gate2, the second scan line Gate2 is used for providing the light-operated scan signal for the control end of the switch tube 21, the first end of the switch tube 21 is connected with the first end of the photosensitive sensor 22, and the second end of the switch tube 21 is connected with the signal reading line RL; the control end of the photosensor 22 is connected to the first power line SVGG, and the second end of the photosensor 22 is connected to the second power line SVDD.
It can be understood that the first power line SVGG is connected to a first voltage, the second power line SVDD is connected to a second voltage, the first voltage and the second voltage are both fixed voltages, and the first voltage and the second voltage may be-10 volts.
In an embodiment, the light control device 20 further includes a storage capacitor C, a first end of the storage capacitor C is connected to the first end of the switching tube 21 and the first end of the photosensitive sensor 22, and a second end of the storage capacitor C is connected to the first power line SVGG.
It should be noted that, when the display panel is illuminated by external light, the photosensitive sensor 22 generates carriers, the generated carriers are stored by the storage capacitor C, and when the control end of the switch tube 21 is connected to the light-operated scanning signal provided by the second scanning line Gate2, the switch tube 21 is turned on, and the reading module reads the carriers stored by the storage capacitor C through the signal reading line RL and controls the display panel to generate a corresponding response.
It should be noted that, the first end of the first source/drain is the first end of the driving transistor 10, and the second end of the first source/drain is the second end of the driving transistor 10; the first end of the second source-drain electrode is the first end of the switch tube 21, and the second end of the second source-drain electrode is the second end of the switch tube 21; the first end of the third source/drain is the first end of the photosensitive sensor 22, and the second end of the third source/drain is the second end of the photosensitive sensor 22.
It can be understood that the first end of the first source-drain layer 13 is connected to the first end of the second source-drain layer 213 and the first end of the storage capacitor C, and the first scan line Gate1 is connected to the first Gate11, so as to provide the driving scan signal to the first Gate 11; the second scan line Gate2 is connected to the second Gate 211, and is configured to provide the light-operated scan signal to the second Gate 211; the first power line SVGG is connected to the third gate electrode 221, the data line Date is connected to a first end of the third source/drain electrode layer 223, and the signal read line RL is connected to a second end of the second source/drain electrode layer 213.
Wherein the first source-drain electrode layer 13 includes a first source electrode and a first drain electrode, and a first end of the first source-drain electrode layer 13 is one of the first source electrode and the first drain electrode; the second source-drain layer 213 includes a second source and a second drain, a first end of the second source-drain layer 213 is one of the second source and the second drain, and a second end of the second source-drain layer 213 is the other of the second source and the second drain; the third source-drain layer 223 includes a third source and a third drain, the first end of the third source-drain layer 223 is one of the third source and the third drain, and the second end of the third source-drain layer 223 is the other of the third source and the third drain.
As shown in fig. 3 and 4, the driving transistors 10 are provided in plural, and a plurality of the driving transistors 10 are arrayed; the light control device 20 is provided in plurality, and the plurality of light control devices 20 are distributed in an array.
Specifically, the first scan line Gate1 and the second scan line Gate2 are each provided with a plurality of first scan lines (Gate 11, gate 12..gate (1 n)) arranged in the second direction, and the plurality of second scan lines (Gate 21, gate 22..gate (2 n)) arranged in the second direction; the data lines Date are provided in plurality, and the plurality of data lines (Date 1..date (n)) are arranged in the second direction.
One of the first scan lines Gate1 is correspondingly connected to one row of the driving transistors 10, one of the second scan lines Gate2 is correspondingly connected to one row of the switching transistors 21 of the light control device 20, and one of the data lines Gate is correspondingly connected to one column of the driving transistors 10.
Specifically, the display panel further includes a driving module 60, and the driving module 60 is connected to the control terminal of the driving transistor 10, the control terminal of the switching tube 21, and the emitter electrode TX.
The driving module 60 is configured to provide a driving scan signal to the control terminal of the driving transistor 10 at a first time t1 within a frame time, provide a light-operated scan signal to the control terminal of the switching tube 21 at a second time t2 within a frame time, and provide a touch scan signal to the transmitting electrode TX at a third time t3 within a frame time.
Specifically, the first scan line Gate1 is connected to the driving module 60, so as to transmit the driving scan signal to the control terminal of the driving transistor 10; the second scan line Gate2 is connected to the driving module 60, and is used for transmitting the optically controlled scan signal to the control end of the switching tube 21.
It can be understood that the driving transistor 10 is turned on when the control end of the driving transistor 10 is connected to the driving scanning signal, the switching transistor 21 is turned on when the control end of the switching transistor 21 is connected to the light-operated scanning signal, and the transmitting electrode Tx and the receiving electrode Rx form a touch capacitance at the intersection when the transmitting electrode Tx is connected to the touch scanning signal.
It should be noted that, the touch control function and the light control function are integrated in the display panel at the same time, and the display driving, the touch control function and the light control function all work at different times and are not interfered with each other, so that the problem of mutual crosstalk among the three functions of the display driving, the touch control function and the light control function can be effectively solved.
It can be understood that, in the present application, the first time and the second time only represent time difference, and do not represent sequence, and in one frame time, the sequence of the control end of the driving transistor accessing the driving scanning signal, the control end of the switching transistor 21 accessing the light-operated scanning signal, and the transmitting electrode Tx accessing the touch scanning signal is not limited, for example, the control end of the driving transistor accessing the driving scanning signal first, then the control end of the switching transistor 21 accessing the light-operated scanning signal, or the control end of the switching transistor 21 accessing the light-operated scanning signal first, then the control end of the driving transistor accessing the driving scanning signal first.
In an embodiment, in a frame time, the first time T1 and the second time T2 are alternately arranged in the first time period T1, and the third time T3 is located in the second time period T2, so as to avoid crosstalk between the touch function and the light control function.
It can be understood that, in the present application, the first period T1 and the second period T2 only represent different times, and do not represent a sequence, and in one frame time, the first period T1 may occur first, then the second period T2 may occur, or the second period T2 may occur first, then the first period T1 may occur.
The driving transistor 10 and the light control device 20 adopt a mode of line-dividing alternate scanning to scan, namely, in a first time period T1 of a frame time, a first scanning line Gate11 is connected with a driving scanning signal at a first time T1, a first second scanning line Gate21 is connected with the light control scanning signal at a first second time T2, a second first scanning line Gate12 is connected with the driving scanning signal at a second first time T1, a second scanning line Gate22 is connected with the light control scanning signal at a second time T2, and in turn, an nth first scanning line Gate (1 n) is connected with the driving scanning signal at an nth first time T1, an nth second scanning line Gate (2 n) is connected with the light control scanning signal at an nth second time T2 until all lines of driving transistors 10 are connected with the driving scanning signal, a control end of the switching tube 21 of all lines of the light control device 20 is connected with the light control scanning signal, then, in a second time period T2 of a frame time, a first scanning line Gate (1 n) is connected with the light control scanning signal at a third time T3, and in turn, an nth scanning signal is connected with the electrode is connected with the light control electrode at a third time T3, and so on until all lines of the touch scanning signals are connected with the electrode in a touch mode, tx is connected with the touch electrode in turn, and so on is completed.
Based on the display panel, the present application further provides a display device, as shown in fig. 5, where the display device includes a beam emitter 70 and a display panel according to any one of the foregoing embodiments, the beam emitter 70 is configured to emit a projection beam, and the light control device 20 on the display panel is configured to sense the projection beam projected on the display panel.
The projection light beam can be visible light, and the visible light can be one of red light, orange light, yellow light, green light, blue light, cyan light, purple light or other color light; the projection beam can also be invisible light, and the invisible light can be one of infrared light and ultraviolet light; taking invisible light as an infrared light for example, the wavelength of the invisible light may be 980 nm, 808 nm or 850 nm, etc., and the type and wavelength of the visible light and the type and wavelength of the invisible light may be designed according to the sensitive section of the photosensitive sensor 22 on the display panel in practical cases.
It should be noted that, when the display panel needs to be remotely operated, for example, when the display panel is used for displaying in a conference room, a display person projects the projection beam onto the display panel by using the beam emitter 70 through holding the beam emitter 70, the photosensor 22 on the display panel senses the projection beam and then sends a light-operated sensing signal to the reading module, and the reading module determines the projection position of the projection beam on the display panel according to the light-operated sensing signal and controls the display panel to make a corresponding response, for example, determining operation, handwriting operation, dragging spot operation, and the like, so that the remote operation on the display panel can be realized.
The principles and embodiments of the present application are described herein with specific examples, the above examples being provided only to assist in understanding the methods of the present application and their core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims (8)

1. A display panel, the display panel comprising:
an array substrate including a driving transistor;
the color film substrate comprises a second substrate and a color film layer arranged on one side of the second substrate close to the array substrate, and the color film substrate and the array substrate are oppositely arranged;
the liquid crystal layer is arranged between the color film substrate and the array substrate;
the light control device comprises a light sensor and a switch tube connected with the light sensor;
the touch device comprises a transmitting electrode and a receiving electrode which is positioned at different layers with the transmitting electrode, and the receiving electrode is arranged on one side of the color film layer close to the array substrate;
the emitting electrodes and the receiving electrodes are respectively provided with a plurality of emitting electrodes, the emitting electrodes are arranged along a first direction, and the emitting electrodes are arranged at intervals along a second direction;
the receiving electrodes are arranged along a second direction, a plurality of receiving electrodes are arranged at intervals along a first direction, and the first direction and the second direction are mutually perpendicular;
the transmitting electrodes and the receiving electrodes are mutually intersected to form a grid structure, and touch capacitance is formed at the intersection of the transmitting electrodes and the receiving electrodes;
the emitting electrodes and the common electrodes are arranged at the same layer and at intervals, and the common electrodes and the emitting electrodes are alternately arranged along the second direction;
the light control device is arranged on the array substrate and the color film substrate, and the touch control device is arranged on the array substrate and the color film substrate.
2. The display panel according to claim 1, wherein the driving transistor includes a first gate electrode, a first semiconductor layer, and a first source-drain layer; the switch tube comprises a second grid electrode, a second semiconductor layer and a second source drain electrode layer; the photosensitive sensor comprises a third grid electrode, a third semiconductor layer and a third source drain electrode layer;
wherein the first gate, the second gate and the third gate are arranged on the same layer; the first semiconductor layer, the second semiconductor layer and the third semiconductor layer are arranged on the same layer; the first source drain electrode layer is arranged on the first semiconductor layer, the second source drain electrode layer is arranged on the second semiconductor layer, and the third source drain electrode layer is arranged on the third semiconductor layer.
3. The display panel of claim 2, wherein the array substrate comprises:
a first substrate base plate;
a gate insulating layer disposed on the first substrate;
a passivation layer disposed on the gate insulating layer;
a common electrode disposed on the passivation layer;
the first grid electrode, the second grid electrode and the third grid electrode are arranged on the first substrate, and the grid electrode insulating layer covers the first grid electrode, the second grid electrode and the third grid electrode; the first semiconductor layer, the second semiconductor layer and the third semiconductor layer are arranged on the gate insulating layer, and the passivation layer covers the first semiconductor layer, the second semiconductor layer, the third semiconductor layer, the first source drain layer, the second source drain layer and the third source drain layer.
4. The display panel according to claim 1, further comprising a first scan line, a second scan line, and a first power line disposed along a first direction, and a data line, a signal read line, and a second power line disposed along a second direction;
the control end of the driving transistor is connected with the first scanning line, and the first end of the driving transistor is connected with the data line; the control end of the switching tube is connected with the second scanning line, the first end of the switching tube is connected with the first end of the photosensitive sensor, and the second end of the switching tube is connected with the signal reading line; the control end of the light sensing sensor is connected with the first power line, and the second end of the light sensing sensor is connected with the second power line.
5. The display panel according to claim 4, wherein a plurality of the driving transistors are provided, and a plurality of the driving transistor arrays are distributed; the light control devices are arranged in a plurality, and the light control devices are distributed in an array; the first scanning lines and the second scanning lines are respectively provided with a plurality of first scanning lines, the first scanning lines are distributed along the second direction, and the second scanning lines are distributed along the second direction;
one of the first scanning lines is correspondingly connected with one row of the driving transistors, and one of the second scanning lines is correspondingly connected with one row of the switching transistors of the light control device.
6. The display panel of claim 1, further comprising a drive module connected to the control terminal of the drive transistor, the control terminal of the switching tube, and the emitter electrode;
the driving module is used for providing a driving scanning signal for the control end of the driving transistor at a first time within a frame time, providing a light-operated scanning signal for the control end of the switching tube at a second time within a frame time, and providing a touch scanning signal for the transmitting electrode at a third time within a frame time.
7. The display panel of claim 6, wherein the first time and the second time are alternately arranged in a first period and the third time is in a second period within one frame time.
8. A display device comprising a light beam emitter for emitting a projection light beam and a display panel according to any one of claims 1 to 7, wherein a light control device on the display panel is arranged to sense the projection light beam projected on the display panel.
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