CN112799548A - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN112799548A
CN112799548A CN202110230574.8A CN202110230574A CN112799548A CN 112799548 A CN112799548 A CN 112799548A CN 202110230574 A CN202110230574 A CN 202110230574A CN 112799548 A CN112799548 A CN 112799548A
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China
Prior art keywords
display panel
layer
electrode
semiconductor layer
light
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Granted
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CN202110230574.8A
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CN112799548B (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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Publication of CN112799548A publication Critical patent/CN112799548A/en
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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
    • 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 potential barriers; including integrated passive circuit elements having potential barriers
    • 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers
    • 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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 potential barriers; including integrated passive circuit elements having potential barriers 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

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 device; the light control device comprises a photosensitive sensor and a switching tube connected with the photosensitive sensor; the touch device comprises a transmitting electrode and receiving electrodes which are positioned on different layers from the transmitting electrode; the light control device is arranged on the array substrate or/and the color film substrate, and the touch 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 at the same time, the display panel has the touch control function and the light control function at the same time, the touch control and the light control functions required by customers can be met at the same time, meanwhile, the light control device and the touch control device are integrated in the display panel in an embedded mode, and the whole 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 cost, it is a mainstream trend in the industry to integrate various sensors into a display panel, such as a touch sensor and a light sensor into the display panel.
However, in the conventional display panel, only a touch sensor or only a light sensor is generally integrated, and the touch and light control functions required by a customer cannot be satisfied at the same time.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, so as to solve the problem that generally only a touch sensor or only an optical sensor is integrated in the existing display panel, and the touch and optical control functions required by a customer cannot be met simultaneously.
The embodiment of the present application provides a display panel, display panel includes:
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 photosensitive sensor and a switching tube connected with the photosensitive sensor;
the touch device comprises a transmitting electrode and receiving electrodes which are positioned on different layers 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 layer; the photosensitive sensor comprises a third grid, a third semiconductor layer and a third source drain layer;
the first grid electrode, the second grid electrode and the third grid electrode 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 base;
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 grid electrode 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 emission electrode and the common electrode are disposed in the same layer.
Optionally, in some embodiments of the present application, the color filter substrate includes a second substrate, and the receiving electrode is disposed on one 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 the first direction, and a data line, a signal read line, and a second power line disposed along the 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 switch tube is connected with the second scanning line, the first end of the switch tube is connected with the first end of the photosensitive sensor, and the second end of the switch tube is connected with the signal reading line; the control end of the photosensitive sensor is connected with the first power line, and the second end of the photosensitive sensor is connected with the second power line.
Optionally, in some embodiments of the present application, the driving transistor is provided in plurality, and the plurality of driving transistors are distributed in an array; the light control device is provided with a plurality of light control devices, and the plurality of light control devices are distributed in an array; the first scanning lines and the second scanning lines are both provided with a plurality of lines, the plurality of first scanning lines are arranged along a second direction, and the plurality of second scanning lines are arranged along the second direction;
one first scanning line is correspondingly connected with one row of the driving transistors, and the other second scanning line is correspondingly connected with one row of the switching tubes of the light control devices.
Optionally, in some embodiments of the present application, the display panel further includes a driving module, and the driving module is connected to the control terminal of the driving transistor, the control terminal of the switching tube, and the emitting electrode;
the driving module is used for providing a driving scanning signal for the control end of the driving transistor at a first time in a frame time, providing a light-control scanning signal for the control end of the switching tube at a second time in the frame time, and providing a touch scanning signal for the emitting electrode at a third time in the frame time.
Optionally, in some embodiments of the present application, in a frame time, the first time and the second time are alternately arranged in a first time period, and the third time is located in a second time period.
Accordingly, embodiments of the present application also provide a display apparatus, which includes a light beam emitter for emitting a projection light beam, and a display panel as described in any of the above embodiments, wherein the light control device on the display panel is used for sensing the projection light beam projected on the display panel.
The beneficial effects of the embodiment of the application are as follows: the display panel is integrated with a touch function and a light control function simultaneously, the display panel is provided with the touch function and the light control function simultaneously, the touch and the light control functions required by customers can be met simultaneously, the light control device and the touch device are integrated in the display panel in an embedded mode simultaneously, the whole thickness and the cost of the display panel can be reduced, and the display drive, the touch function and the light control function are all operated at different times and do not interfere with each other, so that the problem of mutual crosstalk among the display drive, the touch function and the light control function can be effectively solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
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 an optical control device provided in an embodiment of the present application;
fig. 3 is a schematic scanning timing diagram of a driving transistor, a touch device and an optical control device according to an embodiment of the present disclosure;
fig. 4 is a schematic layout diagram of a driving transistor and an optical control device according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of scanning timing sequences of a scan line and an emitter electrode according to an embodiment of the present application.
Description of reference numerals:
10. a drive transistor; 11. a first gate electrode; 12. a first semiconductor layer; 13. a first source drain layer; 20. a light control device; 21. a switching tube; 211. a second gate electrode; 212. a second semiconductor layer; 213. a second source drain layer; 22. a light-sensitive sensor; 221. a third gate electrode; 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 drive module; 70. a light beam emitter.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a display panel, a driving method thereof and a display device. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
The present application provides a display panel, as shown in fig. 1 and fig. 2, the display panel includes a light control device 20, a touch device, an array substrate 30, a color filter substrate 40 disposed opposite to the array substrate 30, and a liquid crystal layer 50 disposed between the array substrate 30 and the color filter substrate 40.
The array substrate 30 includes a driving transistor 10, and the driving transistor 10 is used for display driving of a display panel; the light control device 20 is used for sensing light control operation so that the display panel has a light control function; the touch device is used for sensing touch operation so that the display panel has a touch function.
In one 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 configured to read a touch sensing signal transmitted by the touch device and a 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 at the same time, when the display panel needs to be touched at a close distance, the display panel is touched by a finger or a stylus, the touch device at a corresponding position on the display panel senses the touch operation and transmits a touch sensing signal to the reading module, and the reading module controls the display panel to perform a corresponding response according to the touch sensing signal, so as to implement a touch function.
When need carry out remote operation to display panel, for example when showing through display panel in the meeting room, the device of projection beam is launched through handheld light beam transmitter etc. to the show personnel, light-operated device 20 senses and transmits light-operated sensing signal for reading the module when throwing the projection beam of projection on display panel, it carries out corresponding response according to light-operated sensing signal control display panel to read the module, in order to realize light-operated function, display panel possesses touch-control function and light-operated function simultaneously, can satisfy required touch-control of customer and light-operated function simultaneously, and display panel can realize short distance touch-control and long-range light-operated function, be favorable to promoting display panel's complex function.
Specifically, the light control device 20 includes a light sensing sensor 22 and a switching tube 21 connected to the light sensing sensor 22, where the light sensing sensor 22 is configured to sense light change and output a corresponding light control sensing signal, and a light sensing waveband of the light sensing sensor 22 may be invisible light such as visible light or infrared light; the switch tube 21 is used for controlling on-off between the photosensitive sensor 22 and the reading module, when the switch tube 21 is switched on, the reading module receives a light-operated sensing signal output by the photosensitive sensor 22, and the driving transistor 10, the photosensitive sensor 22 and the switch tube 21 can be all 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 both provided with a plurality of transmitting electrodes Tx, 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 a second direction, the receiving electrodes Rx are arranged at intervals along the first direction, and the transmitting electrodes Tx and the receiving electrodes Rx are intersected with each other to form a grid structure.
It can be understood that the touch device is a mutual capacitance type touch device, a touch capacitance is formed at the intersection of the transmitting electrode Tx and the receiving electrode Rx, the transmitting electrode Tx is used for receiving a touch scanning signal and transmitting an electrical signal, the receiving electrode Rx outputs a corresponding touch sensing signal according to the capacitance of the touch capacitance, and the reading module may be connected to the receiving electrode Rx for receiving the touch sensing signal.
It should be noted that, when a finger or a stylus is used to touch the display panel, the capacitance of the 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 perform a corresponding response.
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 filter substrate 40, and the touch device is disposed on the array substrate 30 or/and the color filter substrate 40.
It can be understood that the touch control function and the light control function are integrated in the display panel, 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 gate11, a first semiconductor layer 12, and a first source drain layer 13; the switch tube 21 includes a second gate 211, a second semiconductor layer 212, and a second source drain 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 an optically controlled 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 optical control scanning signal; the third gate 221 is a control terminal of the photosensor 22.
Specifically, the material for preparing the first semiconductor layer 12, the second semiconductor layer 212, and the third semiconductor layer 222 may be hydrogenated amorphous silicon, germanium, or silicon germanium.
In one embodiment, the first gate11, the second gate 211 and the third gate 221 are disposed on the same layer; the first semiconductor layer 12, the second semiconductor layer 212 and the third semiconductor layer 222 are arranged on 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 of the same material by a single process; the first semiconductor layer 12, the second semiconductor layer 212 and the third semiconductor layer 222 may be formed of the same material by a single process; the first source drain layer 13, the second source drain layer 213 and the third source drain layer 223 may be formed by 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 gate electrode 11, the second gate electrode 211 and the third gate electrode 221 are disposed on the first substrate 31, and the gate insulating layer 32 covers the first gate electrode 11, the second gate electrode 211 and the third gate electrode 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 disposed in the same layer to reduce the overall thickness of the display panel.
The common electrode 34 may be made of a transparent conductive metal, the common electrode 34 is spaced apart from the transmitting electrode Tx, and the transmitting electrode Tx and the common electrode 34 are formed by using the same material through one process, so as to reduce the production cost.
In one embodiment, the common electrodes 34 and the transmitting electrodes Tx are alternately arranged along the second direction, so as to facilitate the arrangement and arrangement of the common electrodes 34 and the transmitting electrodes Tx.
In an embodiment, the array substrate 30 may further include a pixel electrode disposed on 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 one embodiment, the array substrate 30 further includes a first alignment film 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 filter substrate 40, so that the influence of the arrangement of the transmitting electrode Tx and the receiving electrode Rx on other wirings in the display panel can be reduced.
It should be noted that the light control device 10 may also be disposed on the color filter 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 filter substrate 40.
In an embodiment, the color filter substrate 40 further includes a color filter layer 42 disposed on a side of the second substrate 41 close to the array substrate 30, and the receiving electrode Rx is disposed on a side of the color filter layer 42 close to the array substrate 30.
The color film layer 42 includes a plurality of color block 421 spaced apart from each other and a light-shielding layer 422 located between adjacent color block 421, and an orthographic projection of the light-shielding layer 422 on the first substrate 31 covers 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 irradiated by external light to cause misoperation.
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, and the common electrode is disposed opposite to the pixel electrode, and drives the liquid crystal to rotate by using a voltage difference between the pixel electrode and the common electrode.
In an embodiment, the color filter substrate 40 further includes a second alignment film layer 43 covering the color filter 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 a VA, IPS, TN, FFS, or the like.
As shown in fig. 2, the display panel further includes first scan lines Gate1, second scan lines Gate2, and first power lines SVGG arranged in the first direction, and data lines Date, signal read lines RL, and second power lines SVDD arranged in the second direction.
Wherein, the control terminal of the driving transistor 10 is connected to the first scan line Gate1, the first scan line Gate1 is used for providing the driving scan signal to the control terminal of the driving transistor 10, and the first terminal of the driving transistor 10 is connected to the data line Date; the control end of the switching tube 21 is connected to the second scan line Gate2, the second scan line Gate2 is configured to provide the optically controlled scan signal to the control end of the switching tube 21, the first end of the switching tube 21 is connected to the first end of the photosensor 22, and the second end of the switching tube 21 is connected to the signal reading line RL; the control end of the photosensitive sensor 22 is connected with the first power line SVGG, and the second end of the photosensitive sensor 22 is connected with the second power line SVDD.
It is understood that the first power line SVGG is connected to a first voltage, the second power line SVDD is connected to a second voltage, both the first voltage and the second voltage are fixed voltages, and the first voltage and the second voltage may be-10 to 10 volts.
In one 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 switch tube 21 and the first end of the photosensor 22, and a second end of the storage capacitor C is connected to the first power line SVGG.
It should be noted that, the light sensor 22 is always in a conducting state, when the display panel is illuminated by external light, the light sensor 22 generates a carrier, the generated carrier is stored through the storage capacitor C, when the control end of the switching tube 21 is connected to the light-operated scanning signal provided by the second scanning line Gate2, the switching tube 21 is conducted, and the reading module reads the carrier stored in 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 a first end of the first source/drain is a first end of the driving transistor 10, and a second end of the first source/drain is a second end of the driving transistor 10; the first end of the second source/drain is the first end of the switch tube 21, and the second end of the second source/drain is the second end of the switch tube 21; the first end of the third source/drain is the first end of the photosensor 22, and the second end of the third source/drain is the second end of the photosensor 22.
It is 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 for providing the first Gate11 with the driving scan signal; the second scan line Gate2 is connected to the second Gate 211 for providing the second Gate 211 with the optically controlled scan signal; the first power line SVGG is connected to the third gate 221, the data line Date is connected to a first end of the third source/drain layer 223, and the signal readout line RL is connected to a second end of the second source/drain layer 213.
The first source drain layer 13 includes a first source and a first drain, and a first end of the first source drain layer 13 is one of the first source and the first drain; 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, a first end of the third source/drain layer 223 is one of the third source and the third drain, and a 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 transistor 10 is provided in plurality, and a plurality of the driving transistors 10 are distributed in an array; the light control device 20 is provided in plurality, and a plurality of the light control devices 20 are arranged in an array.
Specifically, each of the first scan line Gate1 and the second scan line Gate2 is provided with a plurality of first scan lines (Gate11, Gate12.. quadrature.gate (1n)) arranged along a second direction, and a plurality of second scan lines (Gate21, Gate22.. quadrature.gate (2n)) arranged along the second direction; the data line Date is provided with a plurality of data lines (Date1.... Date (n)) arranged in a 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 tubes 21 of the light control device 20, and one data line Date 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 end of the driving transistor 10, the control end of the switching tube 21, and the transmitting 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 an optically controlled scan signal to the control terminal of the switching tube 21 at a second time t2 within the frame time, and provide a touch scan signal to the transmitting electrode TX at a third time t3 within the frame time.
Specifically, the first scan line Gate1 is connected to the driving module 60 for transmitting 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 for transmitting the optically controlled scan signal to the control terminal of the switch tube 21.
It can be understood that the driving transistor 10 is turned on when the control terminal of the driving transistor 10 is connected to the driving scanning signal, the switching tube 21 is turned on when the control terminal of the switching tube 21 is connected to the light-controlled 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 driver, the touch control function and the light control function all work at different times without interfering with each other, so that the problem of crosstalk among the display driver, 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 indicate different times, and do not indicate a sequence, and in a frame time, the sequence in which the control end of the driving transistor is connected to the driving scanning signal, the control end of the switching tube 21 is connected to the optical control scanning signal, and the transmitting electrode Tx is connected to the touch scanning signal is not limited, for example, the control end of the driving transistor is connected to the driving scanning signal first, the control end of the switching tube 21 is connected to the optical control scanning signal, or the control end of the switching tube 21 is connected to the optical control scanning signal first, and the control end of the driving transistor is connected to the driving scanning signal first.
In one embodiment, 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 during one frame time, so as to avoid crosstalk between the touch control function and the light control function.
It is understood that, in the present application, the first time period T1 and the second time period T2 only indicate different times and do not indicate a sequential order, and in a frame time, the first time period T1 may occur first and then the second time period T2 may occur later, or the second time period T2 may occur first and then the first time period T1 occurs later.
The driving transistors 10 and the photo-control device 20 perform scanning in a manner of line-by-line alternating scanning, that is, in a first time period T1 of a frame time, a first scan line Gate11 receives a driving scan signal at a first time T1, a first second scan line Gate21 receives a photo-control scan signal at a first second time T2, a second first scan line Gate12 receives a driving scan signal at a second first time T1, a second scan line Gate22 receives a photo-control scan signal at a second time T2, and so on, the nth first scan line Gate (1n) receives a driving scan signal at an nth first time T1, the nth second scan line Gate (2n) receives a photo-control scan signal at an nth second time T2 until all the line driving transistors 10 receive the driving scan signal, and the control terminals of the switching tubes 21 of all the line photo-control devices 20 receive the photo-control scan signal, subsequently, in a second time period T2 of the frame time, the first transmitting electrode Tx1 is switched in the touch scan signal at the first third time T3, the nth transmitting electrode Tx (n) is switched in the touch scan signal at the nth third time T3, and so on until all transmitting electrodes Tx are switched in the touch scan signal, so as to complete the frame scan.
Based on the above display panel, the present application also provides a display device, as shown in fig. 5, which includes a light beam emitter 70 and the display panel as described in any of the above embodiments, wherein the light beam emitter 70 is used for emitting a projection light beam, and the light control device 20 on the display panel is used for sensing the projection light 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 light beam can also be invisible light, and the invisible light can be one of infrared light and ultraviolet light; taking the invisible light as the infrared light, the wavelength of the invisible light may be 980 nm, 808 nm, or 850 nm, 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 region of the photosensor 22 on the display panel in practical situations.
It should be noted that, when the display panel needs to be operated remotely, for example, when the display panel is displayed in a meeting room, a display person projects the projection light beam onto the display panel by using the light beam emitter 70 by holding the light beam emitter 70 with hands, the light-operated sensing signal is sent to the reading module after the light-sensitive sensor 22 on the display panel senses the projection light beam, and the reading module determines the projection position of the projection light beam on the display panel according to the light-operated sensing signal and controls the display panel to make a corresponding response, for example, the operations of determining, handwriting, dragging a light spot, and the like, so that the remote operation of the display panel can be realized, which is convenient and fast.
The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A display panel, comprising:
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 photosensitive sensor and a switching tube connected with the photosensitive sensor;
the touch device comprises a transmitting electrode and receiving electrodes which are positioned on different layers 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.
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 layer; the photosensitive sensor comprises a third grid, a third semiconductor layer and a third source drain layer;
the first grid electrode, the second grid electrode and the third grid electrode 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 according to claim 2, wherein the array substrate comprises:
a first substrate base plate;
a gate insulating layer disposed on the first substrate base;
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 grid electrode 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 3, wherein the emission electrode is disposed in the same layer as the common electrode.
5. The display panel according to claim 4, wherein the color filter substrate comprises a second substrate, and the receiving electrode is disposed on a side of the second substrate close to the array substrate.
6. The display panel according to claim 1, wherein the display panel further comprises a first scan line, a second scan line, and a first power supply line arranged in a first direction, and a data line, a signal read line, and a second power supply line arranged in 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 switch tube is connected with the second scanning line, the first end of the switch tube is connected with the first end of the photosensitive sensor, and the second end of the switch tube is connected with the signal reading line; the control end of the photosensitive sensor is connected with the first power line, and the second end of the photosensitive sensor is connected with the second power line.
7. The display panel according to claim 6, wherein the driving transistors are provided in plurality and the plurality of driving transistors are distributed in an array; the light control device is provided with a plurality of light control devices, and the plurality of light control devices are distributed in an array; the first scanning lines and the second scanning lines are both provided with a plurality of lines, the plurality of first scanning lines are arranged along a second direction, and the plurality of second scanning lines are arranged along the second direction;
one first scanning line is correspondingly connected with one row of the driving transistors, and the other second scanning line is correspondingly connected with one row of the switching tubes of the light control devices.
8. The display panel according to claim 1, wherein the display panel further comprises a driving module, the driving module is connected to the control terminal of the driving transistor, the control terminal of the switching tube and the emitting electrode;
the driving module is used for providing a driving scanning signal for the control end of the driving transistor at a first time in a frame time, providing a light-control scanning signal for the control end of the switching tube at a second time in the frame time, and providing a touch scanning signal for the emitting electrode at a third time in the frame time.
9. The display panel according to claim 8, 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.
10. A display device comprising a light beam emitter for emitting a projected light beam and a display panel as claimed in any one of claims 1 to 9, a light control device on the display panel for sensing the projected light beam projected on the display panel.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022266921A1 (en) * 2021-06-24 2022-12-29 京东方科技集团股份有限公司 Touch control substrate, display device and display system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103294283A (en) * 2013-05-17 2013-09-11 京东方科技集团股份有限公司 Optical sensing type embedded touch screen and display device
CN103885636A (en) * 2014-03-10 2014-06-25 京东方科技集团股份有限公司 Touch display device and manufacturing method thereof
CN104881179A (en) * 2015-06-23 2015-09-02 京东方科技集团股份有限公司 Embedded touch display screen, driving method thereof and display device
CN105159516A (en) * 2015-09-18 2015-12-16 深圳市华星光电技术有限公司 Touch display panel and touch display device
CN108681122A (en) * 2018-05-16 2018-10-19 深圳市华星光电技术有限公司 Conversion hysteria display panel and display device in face
CN109407406A (en) * 2018-12-24 2019-03-01 厦门天马微电子有限公司 Display module and display device
CN111427201A (en) * 2020-04-30 2020-07-17 京东方科技集团股份有限公司 Array substrate and display panel
CN111965876A (en) * 2020-08-10 2020-11-20 Tcl华星光电技术有限公司 Liquid crystal display panel and liquid crystal display device
CN112214128A (en) * 2020-10-09 2021-01-12 深圳市华星光电半导体显示技术有限公司 Touch panel
CN112214137A (en) * 2020-10-16 2021-01-12 深圳市华星光电半导体显示技术有限公司 Display panel and display device
CN112230797A (en) * 2020-10-13 2021-01-15 深圳市华星光电半导体显示技术有限公司 Display panel and display device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103294283A (en) * 2013-05-17 2013-09-11 京东方科技集团股份有限公司 Optical sensing type embedded touch screen and display device
CN103885636A (en) * 2014-03-10 2014-06-25 京东方科技集团股份有限公司 Touch display device and manufacturing method thereof
CN104881179A (en) * 2015-06-23 2015-09-02 京东方科技集团股份有限公司 Embedded touch display screen, driving method thereof and display device
CN105159516A (en) * 2015-09-18 2015-12-16 深圳市华星光电技术有限公司 Touch display panel and touch display device
CN108681122A (en) * 2018-05-16 2018-10-19 深圳市华星光电技术有限公司 Conversion hysteria display panel and display device in face
CN109407406A (en) * 2018-12-24 2019-03-01 厦门天马微电子有限公司 Display module and display device
CN111427201A (en) * 2020-04-30 2020-07-17 京东方科技集团股份有限公司 Array substrate and display panel
CN111965876A (en) * 2020-08-10 2020-11-20 Tcl华星光电技术有限公司 Liquid crystal display panel and liquid crystal display device
CN112214128A (en) * 2020-10-09 2021-01-12 深圳市华星光电半导体显示技术有限公司 Touch panel
CN112230797A (en) * 2020-10-13 2021-01-15 深圳市华星光电半导体显示技术有限公司 Display panel and display device
CN112214137A (en) * 2020-10-16 2021-01-12 深圳市华星光电半导体显示技术有限公司 Display panel and display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022266921A1 (en) * 2021-06-24 2022-12-29 京东方科技集团股份有限公司 Touch control substrate, display device and display system

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