CN108962177B - Electronic equipment and driving method of liquid crystal display screen thereof - Google Patents
Electronic equipment and driving method of liquid crystal display screen thereof Download PDFInfo
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- CN108962177B CN108962177B CN201810990994.4A CN201810990994A CN108962177B CN 108962177 B CN108962177 B CN 108962177B CN 201810990994 A CN201810990994 A CN 201810990994A CN 108962177 B CN108962177 B CN 108962177B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 48
- 238000010586 diagram Methods 0.000 description 14
- 239000000758 substrate Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000004590 computer program Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- 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
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- 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
- G02F1/1343—Electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- General Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Human Computer Interaction (AREA)
- Computer Hardware Design (AREA)
Abstract
The application discloses an electronic device and a driving method of a liquid crystal display screen thereof, wherein the electronic device comprises the liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen; the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, wherein the backlight module is provided with a through hole, and the optical sensor component is arranged corresponding to the through hole so that the optical path of the optical sensor component passes through the through hole; the driving circuit in the liquid crystal display panel is used for driving the two touch electrodes corresponding to the through hole to generate pressure difference in the screen-off state of the liquid crystal display screen, so that liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and the light path of the optical sensor assembly passes through the liquid crystal display panel. By the mode, the screen occupation ratio of the display screen can be improved, and the full-screen display is facilitated.
Description
Technical Field
The present disclosure relates to electronic devices, and particularly to an electronic device and a method for driving a liquid crystal display.
Background
Along with the development of electronic equipment, in order to meet the requirement of people on the occupation ratio of a full-screen, the electronic equipment carries out hidden design on more electronic components, such as a camera and a sensor. Among other things, more technology tends to enable the distance sensor of an electronic device to be under the display screen. However, most of the existing liquid crystal display screens are in a normally dark mode, and the liquid crystal light valve is lighttight when the screen is turned off, so that the light path of the light sensor is blocked and cannot pass through the liquid crystal display screen.
Disclosure of Invention
The technical scheme adopted by the application is as follows: the electronic equipment comprises a liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen; the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, wherein the backlight module is provided with a through hole, and the optical sensor component is arranged corresponding to the through hole so that the optical path of the optical sensor component passes through the through hole; the driving circuit in the liquid crystal display panel is used for driving the two touch electrodes corresponding to the through hole to generate pressure difference in the screen-off state of the liquid crystal display screen, so that liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and the light path of the optical sensor assembly passes through the liquid crystal display panel.
Another technical scheme adopted by the application is as follows: the driving method is applied to the electronic equipment, the electronic equipment comprises a liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen, the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, a through hole is formed in the backlight module, and the optical sensor assembly is arranged corresponding to the through hole so that an optical path of the optical sensor assembly passes through the through hole; the driving method includes: detecting whether the liquid crystal display screen is in a screen-off state or not; if so, inputting different voltages to the two touch electrodes corresponding to the through hole to generate a pressure difference between the two touch electrodes corresponding to the through hole, and further deflecting liquid crystal molecules in the liquid crystal display panel corresponding to the through hole to enable the light path of the optical sensor assembly to pass through the liquid crystal display panel.
The electronic equipment comprises a liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen; the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, wherein the backlight module is provided with a through hole, and the optical sensor component is arranged corresponding to the through hole so that the optical path of the optical sensor component passes through the through hole; the driving circuit in the liquid crystal display panel is used for driving the two touch electrodes corresponding to the through hole to generate pressure difference in the screen-off state of the liquid crystal display screen, so that liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and the light path of the optical sensor assembly passes through the liquid crystal display panel. In this way, utilize the through-hole on the backlight unit and control liquid crystal molecule and deflect and make the light valve open, opened a light path under the liquid crystal display panel puts out the screen state for the light sensor subassembly can send or receive optical signal through this route, and then realizes corresponding function, just so makes this light sensor need not to set up in electronic equipment's outside, occupies the position of display screen, is favorable to improving the screen of display screen to account for than, realizes the full face screen.
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. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of an electronic device provided in the present application;
FIG. 2 is a schematic view of the position of a liquid crystal display and a light sensor assembly in a first embodiment of an electronic device provided in the present application;
fig. 3 is a schematic structural diagram of a liquid crystal display panel in a first embodiment of an electronic device provided in the present application;
FIG. 4 is a schematic top view of a liquid crystal display panel in a first embodiment of an electronic device provided in the present application;
FIG. 5 is a schematic diagram illustrating a position of a via hole and a touch electrode in a second embodiment of an electronic device provided in the present application;
FIG. 6 is a schematic diagram of another position of a via and a touch electrode in a second embodiment of an electronic device provided in the present application;
FIG. 7 is a schematic view of another position of a via and a touch electrode in a second embodiment of an electronic device provided in the present application;
fig. 8 is a schematic structural diagram of a third embodiment of an electronic device provided in the present application;
FIG. 9 is a schematic diagram illustrating a position of a via hole and a touch electrode in a fourth embodiment of an electronic device provided in the present application;
FIG. 10 is a schematic view of another position of a via and a touch electrode in a fourth embodiment of an electronic device provided in the present application;
FIG. 11 is a signal diagram of a fifth embodiment of an electronic device provided by the present application;
fig. 12 is a flowchart illustrating an embodiment of a method for driving a liquid crystal display of an electronic device according to the present application.
Detailed Description
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The electronic device in the application can be a smart phone, a tablet computer or other electronic devices with a display screen.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of an electronic device provided in the present application, and the electronic device includes a housing assembly 10 and a liquid crystal display 20 disposed in the housing assembly 10.
Optionally, the housing assembly 10 specifically includes a middle frame assembly 11, a cover plate assembly 12, and a rear housing assembly 13, wherein an accommodating space is formed between the middle frame assembly 11 and the cover plate assembly 12, and is used for accommodating the liquid crystal display 20. Optionally, the cover plate assembly 12 in this embodiment is a transparent glass cover plate.
In addition, another accommodating space is formed between the middle frame assembly 11 and the rear housing assembly 13, wherein the accommodating space is used for accommodating a battery, a main board, and other functional assemblies, which are not described in detail herein.
With reference to fig. 2, fig. 2 is a schematic diagram illustrating a position of a liquid crystal display and a light sensor assembly in a first embodiment of an electronic device provided in the present application.
In the present embodiment, the electronic device further includes a light sensor assembly 30, and the light sensor assembly 30 is disposed on the back side of the liquid crystal display 20, i.e., between the center frame assembly 11 and the liquid crystal display 20. It will be appreciated that a circuit board is provided on the center frame assembly 11, and the optical sensor assembly 30 is provided on the circuit board and connected to the processor through traces on the circuit board.
The liquid crystal display 20 includes a liquid crystal display panel 21 and a backlight module 22, the backlight module 22 has a through hole 22a, and the optical sensor assembly 30 is disposed corresponding to the through hole 22a, so that the optical path of the optical sensor assembly 30 passes through the through hole 22 a.
Optionally, in the present embodiment, the light sensor assembly 30 is a distance sensor for emitting light signals outwards and receiving the returned light signals so as to obtain the distance between the electronic device and the obstacle. In a specific scenario, taking a mobile phone as an example, when a user answers the phone, the head is close to the mobile phone, the distance sensor senses that the head is close to the mobile phone, the processor can be used for turning off the display screen of the mobile phone, when the user finishes answering the phone, the head is far away, the distance sensor senses that the head is far away, and the processor can be used for lighting the display screen of the mobile phone. In one embodiment, the sensor is an infrared sensor.
It will be appreciated that the distance sensor obtains the distance by emitting and receiving optical signals, which in this embodiment are propagated through the through hole 22 a.
It is understood that, as shown in fig. 2, there is a display panel 21 above the backlight module 22, and to realize the function of the light sensor assembly 30, the light path must be made to pass through the liquid crystal display panel 21.
As is known, the principle of the lcd is to control the deflection of the liquid crystal molecules therein by voltage to realize the light path, so that when the electronic device is in the off state, the light valve is closed and the light path cannot pass through the electronic device because the display screen does not display.
As shown in fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a liquid crystal display panel in a first embodiment of an electronic device provided in the present application, and fig. 4 is a schematic top view of the liquid crystal display panel in the first embodiment of the electronic device provided in the present application.
The liquid crystal display panel 21 includes an array substrate 211, a color filter substrate 212, and a liquid crystal layer 213 disposed between the array substrate 211 and the color filter substrate 212.
In the present embodiment, the liquid crystal display panel 21 is an FFS (Fringe Field Switching) type liquid crystal display panel, and a plurality of touch electrodes distributed in an array are disposed in the array substrate 211 for acquiring touch signals. Since the array substrate 211 is provided with touch electrodes, it can be known that the liquid crystal display panel 21 In the present embodiment is an In-cell type liquid crystal display panel, and In-cell refers to a method of embedding touch panel functions into liquid crystal pixels.
In this embodiment, taking the first touch electrode 211a and the second touch electrode 211b as an example, if different voltages are input to the first touch electrode 211a and the second touch electrode 211b, respectively, and a voltage difference is generated between the first touch electrode 211a and the second touch electrode 211b, then the deflection of the liquid crystal molecules in the area corresponding to the positions of the first touch electrode 211a and the second touch electrode 211b can be controlled, so that the light valve is opened and the light path is unobstructed.
It is understood that the voltage of each touch electrode in the liquid crystal display panel 21 is controlled by a driving circuit (not shown), so that the driving circuit can drive the two touch electrodes (i.e., the first touch electrode 211a and the second touch electrode 211b) corresponding to the position of the through hole 22a to generate a voltage difference in the off state of the liquid crystal display panel 21, thereby deflecting the liquid crystal molecules in the liquid crystal display panel 21 corresponding to the position of the through hole 22a, so as to enable the optical path of the optical sensor assembly 30 to pass through the liquid crystal display panel 21.
The electronic equipment provided by the embodiment comprises a liquid crystal display screen and an optical sensor assembly arranged on the back surface of the liquid crystal display screen; the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, wherein the backlight module is provided with a through hole, and the optical sensor component is arranged corresponding to the through hole so that the optical path of the optical sensor component passes through the through hole; the driving circuit in the liquid crystal display panel is used for driving the two touch electrodes corresponding to the through hole to generate pressure difference in the screen-off state of the liquid crystal display screen, so that liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and the light path of the optical sensor assembly passes through the liquid crystal display panel. In this way, utilize the through-hole on the backlight unit and control liquid crystal molecule and deflect and make the light valve open, opened a light path under the liquid crystal display panel puts out the screen state for the light sensor subassembly can send or receive optical signal through this route, and then realizes corresponding function, just so makes this light sensor need not to set up in electronic equipment's outside, occupies the position of display screen, is favorable to improving the screen of display screen to account for than, realizes the full face screen.
In a second embodiment of the electronic device provided by the present application, several different embodiments of the opening positions of the through holes on the backlight module are provided.
It can be understood that, since it is necessary to generate a pressure difference between two adjacent touch electrodes and molecules adjacent to the two touch electrodes are deflected to form a light path, the position of the through hole in the backlight module should correspond to the light path generated by the liquid crystal molecules.
As shown in fig. 5, the through hole 22a may be disposed corresponding to the center of the first touch electrode 211a, and of course, in other embodiments, the through hole 22a may also be disposed corresponding to the center of the second touch electrode 211 b.
As shown in fig. 6, the through hole 22a is disposed at a central position between the first touch electrode 211a and the second touch electrode 221 b. In the present embodiment, the first touch electrode 211a and the second touch electrode 221b are two touch electrodes laterally adjacent to each other.
As shown in fig. 7, the through hole 22a is disposed at a central position between the first touch electrode 211a and the second touch electrode 221 b. In the present embodiment, the first touch electrode 211a and the second touch electrode 221b are two touch electrodes adjacent in the longitudinal direction.
It is to be understood that fig. 5-7 are schematic top views, and are only for illustrating the position relationship between the through hole 22a and the first touch electrode 211a and the second touch electrode 221 b.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a third embodiment of an electronic device provided in the present application.
Referring to fig. 1, in the present embodiment, the light sensor assembly 30 includes an emitter 31 and a receiver 32, and the through hole 22a includes a first sub through hole 22a1 and a second sub through hole 22a 2;
the transmitter 31 is disposed corresponding to the first sub through hole 22a1 so that the optical path of the transmitter 31 passes through the first sub through hole 22a1, and the receiver 32 is disposed corresponding to the second sub through hole 22a2 so that the optical path of the receiver 32 passes through the second sub through hole 22a 2.
In a fourth embodiment of the electronic device provided by the present application, several different embodiments of the opening positions of the first through hole and the second through hole on the backlight module are provided.
As shown in fig. 9, the first sub via hole 22a1 and the second sub via hole 22a2 are disposed corresponding to the centers of the two touch electrodes, respectively. That is, the first sub through hole 22a1 is disposed corresponding to the center of the first touch electrode 221a, and the second sub through hole 22a2 is disposed corresponding to the center of the second touch electrode 221 b.
As shown in fig. 10, the first sub via 22a1 and the second sub via 22a2 are both disposed between the two touch electrodes and located at both sides of a center point between the two touch electrodes.
In the above-described embodiment of fig. 10, the distance between the first sub through hole 11a1 and the second sub through hole 22a2 is greater than 2 mm.
Referring to fig. 11, fig. 11 is a signal diagram of a fifth embodiment of an electronic device provided in the present application.
In this embodiment, the driving circuit is specifically configured to control the two touch electrodes to periodically generate a positive voltage difference or a negative voltage difference in the screen-off state of the liquid crystal display.
Specifically, as shown in fig. 11, S1 indicates that the voltages of the first touch electrode and the second touch electrode are both normal operating voltage V0 in the screen lighting state, and S2 indicates the voltages of the first touch electrode and the second touch electrode in the screen off state.
The driving circuit is used for inputting a first voltage V1 or a second voltage V2 to the first touch electrode alternately; the first voltage V1 is greater than the working voltage V0 of the touch electrode, and the second voltage V2 is less than the working voltage V0 of the touch electrode; the driving circuit is further configured to input a second voltage V2 to the second touch electrode when the first voltage V1 is input to the first touch electrode, or the driving circuit is further configured to input a first voltage V1 to the second touch electrode when the second voltage V2 is input to the first touch electrode. That is, the voltage change laws of the first touch electrode and the second touch electrode are opposite, when the first touch electrode is the first voltage, the second touch electrode is the second voltage, and a forward voltage difference is generated, and when the first touch electrode is the second voltage, the second touch electrode is the first voltage, and a reverse voltage difference is generated.
Referring to fig. 12, fig. 12 is a schematic flowchart illustrating an embodiment of a method for driving a liquid crystal display of an electronic device, where the method includes:
step 121: and detecting whether the liquid crystal display screen is in a screen-off state or not.
If the determination result in step 121 is yes, step 122 is executed.
Step 122: different voltages are input to the two touch electrodes corresponding to the through hole, so that the two touch electrodes corresponding to the through hole generate a pressure difference, liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and a light path of the optical sensor assembly passes through the liquid crystal display panel.
Specifically, in another embodiment, the two touch electrodes include a first touch electrode and a second touch electrode, and step 122 specifically includes: alternately inputting a first voltage or a second voltage to the first touch electrode; the first voltage is greater than the working voltage of the touch electrode, and the second voltage is less than the working voltage of the touch electrode; and inputting a second voltage to the second touch electrode when the first voltage is input to the first touch electrode, or inputting the first voltage to the second touch electrode when the second voltage is input to the first touch electrode.
It is understood that the driving method provided by this embodiment may be applied to the electronic device provided by any one of the above embodiments to drive the electronic device, and in addition, the driving method may also be stored in a memory in the form of a computer program, and when the electronic device is in the screen-off state, the processor executes the computer program to control the driving circuit to drive the display screen accordingly. In addition, the signal diagram in fig. 10 can be referred to as the driving signal diagram adopted in the present embodiment, and is not described again here.
It can be understood that, by using the electronic device and the driving method provided by the above embodiments, the In-cell liquid crystal display screen can be used to realize the use of the optical sensor under the screen, and further, the In-cell liquid crystal display screen does not need to be arranged outside the electronic device to occupy the position of the display screen, which is beneficial to improving the screen occupation ratio of the display screen and realizing a full screen.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (9)
1. An electronic device is characterized by comprising a liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen;
the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, wherein the backlight module is provided with a through hole, and the optical sensor component is arranged corresponding to the through hole so that an optical path of the optical sensor component passes through the through hole;
the driving circuit in the liquid crystal display panel is used for driving the two touch electrodes corresponding to the through hole to generate a pressure difference in the screen-off state of the liquid crystal display screen, so that liquid crystal molecules in the liquid crystal display panel corresponding to the through hole are deflected, and the light path of the optical sensor assembly passes through the liquid crystal display panel;
the through hole is arranged corresponding to the center of any one of the two touch electrodes; or the like, or, alternatively,
the through hole is arranged at the central position between the two touch electrodes.
2. The electronic device of claim 1,
the light sensor assembly comprises an emitter and a receiver, and the through hole comprises a first sub through hole and a second sub through hole;
the transmitter is arranged corresponding to the first sub through hole so that the light path of the transmitter passes through the first sub through hole, and the receiver is arranged corresponding to the second sub through hole so that the light path of the receiver passes through the second sub through hole.
3. The electronic device of claim 2,
the first sub through hole and the second sub through hole are respectively arranged corresponding to the centers of the two touch electrodes.
4. The electronic device of claim 2,
the first sub through hole and the second sub through hole are arranged between the two touch electrodes and are positioned on two sides of a central point between the two touch electrodes.
5. The electronic device of claim 4,
the distance between the first sub through hole and the second sub through hole is larger than 2 mm.
6. The electronic device of claim 1,
the driving circuit is specifically used for controlling the two touch electrodes to periodically generate positive-direction voltage difference or negative-direction voltage difference in the screen-off state of the liquid crystal display screen.
7. The electronic device of claim 6,
the two touch electrodes include a first touch electrode and a second touch electrode;
the driving circuit is specifically used for alternately inputting a first voltage or a second voltage to the first touch electrode; the first voltage is greater than the working voltage of the touch electrode, and the second voltage is less than the working voltage of the touch electrode;
the driving circuit is further configured to input the second voltage to the second touch electrode when the first voltage is input to the first touch electrode, or
The driving circuit is further configured to input the first voltage to the second touch electrode when the second voltage is input to the first touch electrode.
8. A driving method of a liquid crystal display screen of an electronic device is characterized in that the driving method is applied to the electronic device, the electronic device comprises the liquid crystal display screen and an optical sensor assembly arranged on the back of the liquid crystal display screen, the liquid crystal display screen comprises a liquid crystal display panel and a backlight module, a through hole is formed in the backlight module, and the optical sensor assembly is arranged corresponding to the through hole so that an optical path of the optical sensor assembly passes through the through hole;
the driving method includes:
detecting whether the liquid crystal display screen is in a screen-off state or not;
if so, inputting different voltages to the two touch electrodes corresponding to the through hole position so as to enable the two touch electrodes corresponding to the through hole position to generate a pressure difference, and further enabling liquid crystal molecules in the liquid crystal display panel corresponding to the through hole position to deflect, so that a light path of the optical sensor assembly passes through the liquid crystal display panel;
the through hole is arranged corresponding to the center of any one of the two touch electrodes; or the like, or, alternatively,
the through hole is arranged at the central position between the two touch electrodes.
9. The driving method according to claim 8,
the two touch electrodes include a first touch electrode and a second touch electrode;
the step of inputting different voltages to the two touch electrodes corresponding to the positions of the through holes includes:
alternately inputting a first voltage or a second voltage to the first touch electrode; the first voltage is greater than the working voltage of the touch electrode, and the second voltage is less than the working voltage of the touch electrode; and
inputting the second voltage to the second touch electrode when the first voltage is input to the first touch electrode, or
When the second voltage is input to the first touch electrode, the first voltage is input to the second touch electrode.
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| CN201810990994.4A CN108962177B (en) | 2018-08-28 | 2018-08-28 | Electronic equipment and driving method of liquid crystal display screen thereof |
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| CN201810990994.4A CN108962177B (en) | 2018-08-28 | 2018-08-28 | Electronic equipment and driving method of liquid crystal display screen thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692770A (en) * | 2012-06-07 | 2012-09-26 | 昆山龙腾光电有限公司 | Liquid crystal display device |
| US9104061B2 (en) * | 2012-05-03 | 2015-08-11 | Innolux Corporation | Color filter substrate and touch screen display device |
| CN105629545A (en) * | 2016-01-19 | 2016-06-01 | 深圳市华星光电技术有限公司 | Touch panel and manufacturing method thereof |
| CN106060285A (en) * | 2016-08-15 | 2016-10-26 | 广东欧珀移动通信有限公司 | Method, device and mobile terminal for backlight control |
| CN107346067A (en) * | 2016-05-06 | 2017-11-14 | 上海纪显电子科技有限公司 | Capacitance type touch-control panel detecting system and method |
| CN107884975A (en) * | 2017-11-22 | 2018-04-06 | 广东欧珀移动通信有限公司 | Electronic device and sensor assembly |
| CN107886926A (en) * | 2017-11-22 | 2018-04-06 | 广东欧珀移动通信有限公司 | Display screen and electronic equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162316A (en) * | 2006-10-13 | 2008-04-16 | 鸿富锦精密工业（深圳）有限公司 | Directly-down back light module unit |
| JP2008185868A (en) * | 2007-01-31 | 2008-08-14 | Epson Imaging Devices Corp | Electro-optical device |
| KR101735569B1 (en) * | 2010-02-24 | 2017-05-25 | 삼성디스플레이 주식회사 | Liquid Crystal Display device having Touch Sensor |
| KR20120053167A (en) * | 2010-11-17 | 2012-05-25 | 엘지전자 주식회사 | Display device |
| CN106842726A (en) * | 2017-03-23 | 2017-06-13 | 奇酷互联网络科技（深圳）有限公司 | Display device |
| CN207409239U (en) * | 2017-10-31 | 2018-05-25 | 京东方科技集团股份有限公司 | A kind of fixed structure and display brightness detection device |
| CN107942555A (en) * | 2017-11-22 | 2018-04-20 | 广东欧珀移动通信有限公司 | Display screens, display components and electronic devices |
-
2018
- 2018-08-28 CN CN201810990994.4A patent/CN108962177B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9104061B2 (en) * | 2012-05-03 | 2015-08-11 | Innolux Corporation | Color filter substrate and touch screen display device |
| CN102692770A (en) * | 2012-06-07 | 2012-09-26 | 昆山龙腾光电有限公司 | Liquid crystal display device |
| CN105629545A (en) * | 2016-01-19 | 2016-06-01 | 深圳市华星光电技术有限公司 | Touch panel and manufacturing method thereof |
| CN107346067A (en) * | 2016-05-06 | 2017-11-14 | 上海纪显电子科技有限公司 | Capacitance type touch-control panel detecting system and method |
| CN106060285A (en) * | 2016-08-15 | 2016-10-26 | 广东欧珀移动通信有限公司 | Method, device and mobile terminal for backlight control |
| CN107884975A (en) * | 2017-11-22 | 2018-04-06 | 广东欧珀移动通信有限公司 | Electronic device and sensor assembly |
| CN107886926A (en) * | 2017-11-22 | 2018-04-06 | 广东欧珀移动通信有限公司 | Display screen and electronic equipment |
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