CN111198454B - Liquid crystal display module and liquid crystal display screen - Google Patents
Liquid crystal display module and liquid crystal display screen Download PDFInfo
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- CN111198454B CN111198454B CN202010139784.1A CN202010139784A CN111198454B CN 111198454 B CN111198454 B CN 111198454B CN 202010139784 A CN202010139784 A CN 202010139784A CN 111198454 B CN111198454 B CN 111198454B
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- 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
Abstract
The embodiment of the application provides a liquid crystal display module and a liquid crystal display screen, wherein the liquid crystal display module comprises a cover plate, a liquid crystal layer, a backlight layer and an infrared receiving sensor which are sequentially arranged from top to bottom; a driving chip is arranged in a hollow area, close to one side of the cover plate, of the liquid crystal layer and not in contact with the cover plate, an infrared light-transmitting window is arranged on the cover plate, and an infrared light source is arranged below the infrared light-transmitting window; under the condition that the liquid crystal display module carries out infrared fingerprint identification, the infrared light source emits infrared light for fingerprint identification to the outside of the cover plate through the infrared light-transmitting window; the infrared light for fingerprint identification generates a second reflection path reaching the driving chip after passing through the finger of the user; a chip protection film is arranged on the second reflection path and used for absorbing and/or reflecting infrared light; the infrared light of the infrared light for fingerprint recognition passing through the second reflection path is absorbed and/or reflected by the chip protective film. The embodiment of the application can improve the display effect of the liquid crystal display.
Description
Technical Field
The application relates to the technical field of terminals, in particular to a liquid crystal display module and a liquid crystal display screen.
Background
Along with the development of electronic technology, electronic equipment's display screen develops to comprehensive screen gradually, and higher screen accounts for the ratio, and this makes the capacitive fingerprint module of present mainstream not have the department to place, and optical fingerprint should run under the screen.
At present, for a Liquid Crystal Display (Liquid Crystal Display, abbreviated as LCD), because backlight sources exist and the number of stacked layers is large, the transmittance is poor, an LCD optical fingerprint module transmits signals through infrared lamps, and after the signals are reflected by finger fingerprints, the fingerprints are acquired and detected by a receiver below a Display screen. There are 3 light filling schemes at present for LCD optics fingerprint module: a side Infrared (IR) Light Emitting Diode (LED) fill light, a direct IR LED fill light, and an on-screen fingerprint. The lateral IR LED light supplement is the mainstream scheme.
In the light supplement of the IR LED on the side surface, the infrared LED light source emits infrared light, a part of the infrared light penetrates through the finger and is emitted from the contact surface of the fingertip and the cover plate after being totally reflected inside the finger by penetrating through the ink of the cover plate, and the infrared light is captured by the infrared receiving sensor to form a fingerprint image; after a part of infrared light reaches the surface of the finger or the cover plate, the infrared light is directly reflected to the surface of the LCD driving chip, and the electric potential of the crystal back of the driving chip is the lowest electric potential position of the driving chip, namely, the low Voltage (VGL) of the grid electrode for the panel to work is provided; when the energy of the infrared light is gathered on the crystal back of the driving chip, the LCD screen can have the phenomenon of black screen or screen flashing.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display module and a liquid crystal display, and the display effect of the liquid crystal display can be improved.
A first aspect of an embodiment of the present application provides a liquid crystal display module, including a cover plate, a liquid crystal layer, a backlight layer, and an infrared receiving sensor, which are sequentially arranged from top to bottom; a driving chip is arranged in a hollow area, close to one side of the cover plate, of the liquid crystal layer and not in contact with the cover plate, an infrared light-transmitting window is arranged on the cover plate, and an infrared light source is arranged below the infrared light-transmitting window;
under the condition that the liquid crystal display module carries out infrared fingerprint identification, the infrared light source emits infrared light for fingerprint identification to the outside of the cover plate through the infrared light-transmitting window;
the infrared light used for fingerprint identification generates two reflection paths after passing through the finger of the user: a first reflected path and a second reflected path; the first reflection path reaches the infrared receiving sensor, and the second reflection path reaches the driving chip;
a chip protection film is arranged on the second reflection path and used for absorbing and/or reflecting infrared light;
infrared light passing through the first reflection path among the infrared light for fingerprint recognition is captured by the infrared receiving sensor and generates a fingerprint image;
infrared light passing through the second reflection path among the infrared light for fingerprint recognition is absorbed and/or reflected by the chip protection film.
A second aspect of the embodiments of the present application provides a liquid crystal display screen, including display driving circuit and the first aspect of the embodiments of the present application the liquid crystal display module, a driving chip in the liquid crystal display module is used for passing through display driving circuit control the display of the liquid crystal display screen.
The liquid crystal display module in the embodiment of the application comprises a cover plate, a liquid crystal layer, a backlight layer and an infrared receiving sensor which are arranged from top to bottom in sequence; a driving chip is arranged in a hollow area, close to one side of the cover plate, of the liquid crystal layer and not in contact with the cover plate, an infrared light-transmitting window is arranged on the cover plate, and an infrared light source is arranged below the infrared light-transmitting window; under the condition that the liquid crystal display module carries out infrared fingerprint identification, the infrared light source emits infrared light for fingerprint identification to the outside of the cover plate through the infrared light-transmitting window; the infrared light used for fingerprint identification generates two reflection paths after passing through the finger of the user: a first reflected path and a second reflected path; the first reflection path reaches the infrared receiving sensor, and the second reflection path reaches the driving chip; a chip protection film is arranged on the second reflection path and used for absorbing and/or reflecting infrared light; infrared light passing through the first reflection path among the infrared light for fingerprint recognition is captured by the infrared receiving sensor and generates a fingerprint image; infrared light passing through the second reflection path among the infrared light for fingerprint recognition is absorbed and/or reflected by the chip protection film. In the embodiment of the application, set up chip protection film on the reflection route that infrared light reaches driver chip, can absorb or reflect infrared receiving sensor during operation reflection driver chip's infrared light, can avoid infrared receiving sensor during operation infrared light's energy gathering at driver chip to driver chip's drive effect's influence to can improve liquid crystal display's display effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1a is a schematic structural diagram of a liquid crystal display module according to an embodiment of the present disclosure;
FIG. 1b is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another LCD module according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of another LCD module according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another LCD module according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of another LCD module according to an embodiment of the present disclosure;
FIG. 6 is a schematic structural diagram of another LCD module according to an embodiment of the present disclosure;
FIG. 7 is a schematic view of another LCD module according to an embodiment of the present disclosure;
fig. 8 is a schematic flowchart of a fingerprint image generation method according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a liquid crystal display screen according to an embodiment of the present application.
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.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, system, article, or apparatus.
Reference in the specification 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 specification. 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 mobile terminal according to the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), and so on. For convenience of description, the above-mentioned devices are collectively referred to as a mobile terminal.
Referring to fig. 1a, fig. 1a is a schematic structural diagram of a liquid crystal display module according to an embodiment of the present disclosure. As shown in fig. 1a, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 1 a); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
under the condition that the liquid crystal display module 10 performs infrared fingerprint identification, the infrared light source 16 emits infrared light for fingerprint identification to the outside of the cover plate 11 through the infrared light-transmitting window 111;
the infrared light used for fingerprint identification generates two reflection paths after passing through the finger of the user: a first reflected path and a second reflected path; the first reflection path reaches the infrared receiving sensor 14, and the second reflection path reaches the driving chip 15;
a chip protection film 17 is arranged on the second reflection path, and the chip protection film 17 is used for absorbing and/or reflecting infrared light;
infrared light passing through the first reflection path among the infrared light for fingerprint recognition is captured by the infrared receiving sensor 14 and a fingerprint image is generated;
the infrared light passing through the second reflection path among the infrared light for fingerprint recognition is absorbed and/or reflected by the chip protection film 17.
The cover plate 11 may be a glass cover plate. The liquid crystal layer 12 may be referred to as an LCD layer, which may include two parallel glass substrates (an upper glass substrate and a lower glass substrate), and a liquid crystal cell disposed in the glass substrates, the liquid crystal cell having liquid crystal molecules therein. The liquid crystal box is placed between two parallel glass substrates, a Thin Film Transistor (TFT) array is arranged on the lower glass substrate, a color filter is arranged on the upper glass substrate, and the rotation direction of liquid crystal molecules in the liquid crystal box is controlled by changing signals and voltage on the TFT, so that the emergent intensity of polarized light of each pixel point is controlled, and the display purpose is achieved.
The backlight layer 13 may comprise a Light-Emitting Diode (LED) backlight. The LED backlight refers to an LED used as a backlight source of a liquid crystal display.
The infrared receiving sensor 14 and the infrared light source 16 may constitute an optical fingerprint module under the screen. The optical fingerprint identification module passes through infrared light source 16 transmission infrared light signal under the screen, and infrared light signal is after the finger reflection, is acquireed and is generated the fingerprint image by infrared receiving sensor 14. The infrared light source 16 may be an infrared LED light source. The infrared light source 16 may be disposed at one side under the cover plate 11, for example, the infrared light source 16 may be disposed at the left or right side under the cover plate 11. Fig. 1a illustrates an infrared light source 16 disposed on the left side below the cover plate 11. Optical fingerprint module is for side IR LED light filling under the screen in this application embodiment.
The driving chip 15 is used for driving the display of the liquid crystal display module 10. The rotation direction of liquid crystal molecules in the liquid crystal box can be controlled by controlling the voltage of each TFT in the TFT array of the liquid crystal layer, so that the emergent intensity of polarized light of each pixel point is controlled to achieve the display purpose.
The Infrared light transmitting window 111 may be an Infrared (IR) ink layer having characteristics of high transmittance of Infrared light and low transmittance of visible light. The infrared light source 16 may emit an infrared light signal through the infrared light-transmitting window 111.
Wherein the first reflection path is a path between the finger of the user and the infrared receiving sensor 14. The second reflection path is a path between the user's finger to the driving chip 15.
The second reflection path passes through the cover plate 11 and the driving chip 15, and the chip protection film 17 disposed on the second reflection path may be located on the cover plate 11, on the driving chip 15, or at any position between the cover plate 11 and the driving chip 15. The chip protection film 17 may have one layer or a plurality of layers. For example, when the chip protection film 17 has two layers, one layer may be provided on the cover plate 11 and one layer may be provided on the driving chip 15. When the chip protection film 17 has three layers, one layer may be provided on the cover plate 11, one layer may be provided on the driver chip 15, and one layer may be provided at any position between the cover plate 11 and the driver chip 15, respectively.
In one embodiment, the chip protection film 17 is disposed on a side of the driving chip 15 adjacent to the cover plate 11.
Specifically, fig. 1a illustrates an example in which the chip protection film 17 is disposed on the driving chip 15.
Optionally, the chip protection film 17 includes an infrared light absorption film or an infrared light reflection film or an infrared absorption reflection film.
The infrared light absorbing film can absorb infrared light, can absorb the infrared light reflected to the back of the driving chip when the infrared receiving sensor 14 works, avoids the interference of the infrared receiving sensor 14 to the driving chip 15 when the infrared receiving sensor works, can avoid the influence of the energy gathering of the infrared light on the driving effect of the driving chip 15 by the driving chip 15 when the infrared receiving sensor works, and therefore can improve the display effect of the liquid crystal display.
The liquid crystal display module 10 further includes an iron frame, and the iron frame is used for fixing the backlight layer 13 of the liquid crystal display module 10.
Under the condition that the liquid crystal display module 10 performs infrared fingerprint identification, the infrared light source 16 emits infrared light for fingerprint identification to the outside of the cover plate 11 through the infrared light-transmitting window 111;
infrared light which is incident to one side of the driving chip 15 close to the cover plate 11 in the infrared light for fingerprint identification is absorbed by the infrared light absorption film; alternatively, the first and second electrodes may be,
infrared light which is incident to one side of the driving chip 15 close to the cover plate 11 in the infrared light for fingerprint identification is reflected by the infrared light reflection film; alternatively, the first and second electrodes may be,
the infrared light incident to the side of the driving chip 15 close to the cover plate 11 in the infrared light for fingerprint identification is absorbed and reflected by the infrared absorption and reflection film.
Wherein infrared light incident to the infrared receiving sensor 14 among the infrared light for fingerprint recognition is captured by the infrared receiving sensor 14 and generates a fingerprint image.
Alternatively, the infrared light absorbing film may include black polyethylene terephthalate (PET).
The infrared light absorbing film may further include any one or a combination of more of black ink, black insulating paper, black copper foil, and black graphite sheet.
Here, the black PET may be directly attached to a side of the driving chip 15 close to the cover plate (i.e., a back surface of the driving chip 15).
Optionally, the infrared light absorbing film has a thickness of less than 50 μm. The thickness of the infrared light absorbing film is smaller than the distance between the driving chip 15 and the cover plate 11. Since the distance between the driver chip 15 and the cover plate 11 is about 50 micrometers, the thickness of the infrared light absorbing film is set to be less than 50 micrometers.
The infrared light reflection film can absorb infrared light, the infrared light reflected to the back of the driving chip when the infrared receiving sensor 14 works can be reflected, the interference of the infrared receiving sensor 14 to the driving chip 15 when the infrared receiving sensor works can be avoided, the influence of energy gathering of the infrared light when the infrared receiving sensor works on the driving effect of the driving chip 15 by the driving chip 15 can be avoided, and therefore the display effect of the liquid crystal display screen can be improved.
Optionally, the infrared light reflection film includes a pigment or ink with an infrared light reflection function, for example, the infrared light reflection film may include white silica gel or white ink.
Optionally, the infrared light reflecting film comprises white PET. Here, the white PET may be directly attached to a side of the driving chip 15 close to the cover plate (i.e., a rear surface of the driving chip 15).
Optionally, the thickness of the infrared light reflection film is less than 50 micrometers. The thickness of the infrared light reflection film is smaller than the distance between the driving chip 15 and the cover plate 11. Since the distance between the driver chip 15 and the cover plate 11 is about 50 micrometers, the thickness of the infrared light reflection film is set to be less than 50 micrometers.
The infrared absorption reflection film can absorb infrared light, can absorb a part of infrared light reflected to the back of the driving chip when the infrared receiving sensor 14 works, and reflects the other part out, so that the interference of the infrared receiving sensor 14 to the driving chip 15 when the infrared receiving sensor works is avoided, the influence of the energy gathering of the infrared light of the infrared receiving sensor when the infrared receiving sensor works on the driving effect of the driving chip 15 is avoided, and the display effect of the liquid crystal display screen can be improved.
Optionally, the infrared absorption reflection film is made of black polyethylene terephthalate PET, a graphite sheet, and a copper foil. As shown in fig. 1b, the infrared absorption and reflection film can be made of three-in-one material of PET, graphite sheet and copper foil, and can play a role in electrostatic protection and heat dissipation of the driving chip 15 while reflecting infrared light highly. Wherein, PET plays the effect of reflection infrared light, and the graphite flake can prevent that driver chip 15 from receiving electrostatic interference, and the copper foil can be convenient for move chip 15 and dispel the heat.
If no processing is performed on the second reflection path (e.g., the side of the driver chip 15 near the cover plate 11). When the optical fingerprint identification module under the screen works, a user presses a finger on a fingerprint identification area on the cover plate 11, an infrared light source 16 of the optical fingerprint identification module under the screen emits infrared light, the infrared light penetrates through an infrared light-transmitting window 111 (such as IR ink) on the cover plate 11, a part of the infrared light penetrates through the finger, is totally reflected inside the finger and then is emitted from a contact surface of the fingertip and the cover plate 11, and penetrates through the liquid crystal layer 12 and the backlight layer 13 to be captured by the infrared receiving sensor 14, so that a fingerprint image is formed; after a part of the infrared light reaches the surface of the finger or the cover plate 11, the infrared light is directly reflected to the surface of the driving chip 15, and since the potential of the back of the wafer of the driving chip 15 is the lowest potential of the driving chip 15, that is, a gate low Voltage (VGL) for panel operation is provided; when the energy gathering of infrared light is on drive chip 15's crystal back, energy conversion can make drive chip 15's crystal back VGL circuit produce the influence of transient state, lead to VGL voltage output anomaly in the twinkling of an eye to the phenomenon of black screen or splash screen can appear in the display screen, the user takes the back with the finger from the fingerprint identification district on apron 11, and the gathering is reduced by a wide margin at drive chip 15's crystal back, is not enough to change VGL voltage, and the display screen resumes normally.
In the embodiment of the application, in order to avoid the interference of optical fingerprint identification module to the display screen under the screen of infrared LED light filling, set up chip protection film on infrared light reaches driver chip's reflection route, can absorb or reflect the infrared light that infrared receiving sensor during operation reflected driver chip's the back, can avoid the energy gathering of infrared receiving sensor during operation infrared light at driver chip to driver chip's drive effect's influence, thereby can improve liquid crystal display's display effect.
Optionally, referring to fig. 2, fig. 2 is a schematic structural diagram of another liquid crystal display module provided in the embodiment of the present application. As shown in fig. 2, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 2); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
a chip protection film 17 is arranged on one side of the driving chip 15 close to the cover plate 11 (namely, the back side of the driving chip 15);
the gate low voltage VGL circuit disposed on the side of the driving chip 15 close to the cover plate 11 is grounded.
The gate low voltage VGL circuit on the back of the driving chip 15 does not drive the display of the liquid crystal display module 10, but only serves as a reference voltage, and does not affect the function of the driving chip 15. Generally, the VGL voltage of the VGL circuit is a negative potential, not 0V, not coinciding with the ground potential. For example, the VGL voltage is typically-8V for Low Temperature Polysilicon (LTPS) technology liquid crystal displays and-12V for single crystal Silicon technology liquid crystal displays.
In the embodiment of the application, in order to avoid the interference of optical fingerprint identification module to the display screen under the screen of infrared LED light filling, be close to at driver chip 15 one side of apron 11 sets up one deck chip protection film 17 (for example, infrared light absorbing film or infrared light reflection film or infrared absorption reflection film), can absorb and/or reflect the infrared light that infrared receiving sensor during operation reflected driver chip's the back, can avoid the energy gathering of 14 during operation infrared lights of infrared receiving sensor at the influence of driver chip 15 to driver chip 15's drive effect, thereby can improve liquid crystal display's display effect. Even if the chip protection film 17 has poor absorption and/or reflection effects, and the gate low voltage VGL circuit on the side of the driving chip 15 close to the cover plate 11 is grounded, the energy conversion of the infrared light will not cause the VGL circuit disposed on the back of the driving chip 15 to generate transient influence, and the VGL voltage of the VGL circuit will still be maintained at ground potential (e.g., 0V), and will not affect the display effect of the display screen.
Optionally, referring to fig. 3, fig. 3 is a schematic structural diagram of another liquid crystal display module provided in the embodiment of the present application. As shown in fig. 3, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 3); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
a chip protection film 17 is arranged on one side of the driving chip 15 close to the cover plate 11 (namely, the back side of the driving chip 15);
an infrared light reflecting ink layer 1132 is arranged inside the cover plate 11; the cover plate 11 includes a first black ink layer 112, an infrared light transmitting and reflecting ink layer 113 and a second black ink layer 114, the infrared light transmitting and reflecting ink layer 113 is located between the first black ink layer 112 and the second black ink layer 114, and the infrared light transmitting and reflecting ink layer 113 includes an infrared light transmitting ink layer 1131 and an infrared light reflecting ink layer 1132, which are arranged in parallel. Infrared light transmissive ink layer 1131 is disposed on the first reflective path, and infrared light reflective ink layer 1132 is disposed on the second reflective path. The cover plate 11 may also comprise a glass layer. The cover plate 11 may include a glass layer, a first black ink layer 112, an infrared light transmitting and reflecting ink layer 113, and a second black ink layer 114, which are sequentially disposed from top to bottom.
The infrared light reflection ink layer 1132 is disposed in a vertical projection area of the driving chip 15 on the cover plate 11, and the infrared light transmission ink layer 1131 is disposed in a vertical projection area of the infrared receiving sensor 14 on the cover plate 11. The infrared light reflecting ink layer 1132 is used to prevent infrared light reflected by fingers from entering the back of the driving chip 15. The infrared light transmitting ink layer 1131 is used to allow the infrared light emitted from the fingertip after total reflection inside the finger to be captured by the infrared receiving sensor 14.
In this embodiment, in order to avoid the interference of the off-screen optical fingerprint recognition module of the infrared LED light supplement to the display screen, the infrared light transmission ink layer 1131 and the infrared light reflection ink layer 1132 parallel to the infrared light transmission ink layer are designed on the cover plate 11, so as to prevent the infrared light reflected by the finger from entering the back of the driving chip 15, and allow the infrared light emitted from the fingertip after the total reflection inside the finger to be captured by the infrared receiving sensor 14. Even the reflection effect of infrared light reflection ink layer 1132 is not good, is close to at driver chip 15 one side of apron 11 sets up one deck chip protection film 17, can absorb and/or reflect the infrared light that infrared receiving sensor during operation reflected driver chip's the back, can avoid the energy gathering of infrared receiving sensor 14 during operation infrared light at driver chip 15 to driver chip 15's drive effect's influence to can improve liquid crystal display's display effect.
Optionally, referring to fig. 4, fig. 4 is a schematic structural diagram of another liquid crystal display module provided in the embodiment of the present application. As shown in fig. 4, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 4); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
a chip protection film 17 is arranged on one side of the driving chip 15 close to the cover plate 11 (namely, the back side of the driving chip 15);
the grid low voltage VGL circuit arranged on one side of the driving chip 15 close to the cover plate 11 is grounded;
an infrared light reflecting ink layer 1132 is arranged inside the cover plate 11; the cover plate 11 includes a first black ink layer 112, an infrared light transmission and reflection ink layer 113 and a second black ink layer 114, the infrared light transmission and reflection ink layer 113 is located between the first black ink layer 112 and the second black ink layer 114, the infrared light transmission and reflection ink layer 113 includes an infrared light transmission ink layer 1131 arranged in parallel and the infrared light reflection ink layer 1132. Infrared light transmissive ink layer 1131 is disposed on the first reflective path, and infrared light reflective ink layer 1132 is disposed on the second reflective path.
In this embodiment, in order to avoid the interference of the off-screen optical fingerprint recognition module of the infrared LED light supplement to the display screen, the infrared light transmission ink layer 1131 and the infrared light reflection ink layer 1132 parallel to the infrared light transmission ink layer are designed on the cover plate 11, so as to prevent the infrared light reflected by the finger from entering the back of the driving chip 15, and allow the infrared light emitted from the fingertip after the total reflection inside the finger to be captured by the infrared receiving sensor 14. Even the reflection effect of infrared light reflection ink layer 1132 is not good, is close to at driver chip 15 one side of apron 11 sets up one deck chip protection film 17, can absorb and/or reflect the infrared light that infrared receiving sensor during operation reflected driver chip's the back, can avoid the energy gathering of infrared receiving sensor 14 during operation infrared light at driver chip 15 to driver chip 15's drive effect's influence to can improve liquid crystal display's display effect. Even if the chip protection film 17 has poor absorption and/or reflection effects, and the gate low voltage VGL circuit on the side of the driving chip 15 close to the cover plate 11 is grounded, the energy conversion of the infrared light will not cause the VGL circuit disposed on the back of the driving chip 15 to generate transient influence, and the VGL voltage of the VGL circuit will still be maintained at ground potential (e.g., 0V), and will not affect the display effect of the display screen.
Referring to fig. 5, fig. 5 is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present disclosure. As shown in fig. 5, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 5); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
the gate low voltage VGL circuit disposed at one side of the driving chip 15 close to the cover plate 11 is grounded.
The gate low voltage VGL circuit on the back of the driving chip 15 does not drive the display of the liquid crystal display module 10, but only serves as a reference voltage, and does not affect the function of the driving chip 15. Generally, the VGL voltage of the VGL circuit is a negative potential, not 0V, not coinciding with the ground potential. For example, the VGL voltage is typically-8V for Low Temperature Polysilicon (LTPS) technology liquid crystal displays and-12V for single crystal Silicon technology liquid crystal displays.
In the embodiment of the present application, when the energy of the infrared light is gathered on the back of the chip of the driving chip 15, the gate low voltage VGL circuit on the side of the driving chip 15 close to the cover plate 11 is grounded, the energy conversion of the infrared light does not cause the VGL circuit disposed on the back of the chip of the driving chip 15 to generate a transient effect, and the VGL voltage of the VGL circuit is still maintained at the ground potential (for example, 0V), which does not affect the display effect of the display screen.
Referring to fig. 6, fig. 6 is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present disclosure. As shown in fig. 6, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 6); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
the grid low voltage VGL circuit arranged on one side of the driving chip 15 close to the cover plate 11 is grounded;
an infrared light reflecting ink layer 1132 is arranged inside the cover plate 11; the cover plate 11 includes a first black ink layer 112, an infrared light transmission and reflection ink layer 113 and a second black ink layer 114, the infrared light transmission and reflection ink layer 113 is located between the first black ink layer 112 and the second black ink layer 114, the infrared light transmission and reflection ink layer 113 includes an infrared light transmission ink layer 1131 arranged in parallel and the infrared light reflection ink layer 1132. Infrared light transmissive ink layer 1131 is disposed on the first reflective path, and infrared light reflective ink layer 1132 is disposed on the second reflective path.
In this embodiment, in order to avoid the interference of the off-screen optical fingerprint recognition module of the infrared LED light supplement to the display screen, the infrared light transmission ink layer 1131 and the infrared light reflection ink layer 1132 parallel to the infrared light transmission ink layer are designed on the cover plate 11, so as to prevent the infrared light reflected by the finger from entering the back of the driving chip 15, and allow the infrared light emitted from the fingertip after the total reflection inside the finger to be captured by the infrared receiving sensor 14. Even if the reflection effect of the infrared light reflecting ink layer 1132 is not good, the gate low voltage VGL circuit on the side of the driving chip 15 close to the cover plate 11 is grounded, the energy conversion of the infrared light will not cause the VGL circuit disposed on the back of the driving chip 15 to generate transient influence, and the VGL voltage of the VGL circuit will still be maintained at the ground potential (e.g., 0V), and will not affect the display effect of the display screen.
Referring to fig. 7, fig. 7 is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present disclosure. As shown in fig. 7, the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 7); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
an infrared light reflecting ink layer 1132 is arranged inside the cover plate 11; the cover plate 11 includes a first black ink layer 112, an infrared light transmission and reflection ink layer 113 and a second black ink layer 114, the infrared light transmission and reflection ink layer 113 is located between the first black ink layer 112 and the second black ink layer 114, the infrared light transmission and reflection ink layer 113 includes an infrared light transmission ink layer 1131 arranged in parallel and the infrared light reflection ink layer 1132. Infrared light transmissive ink layer 1131 is disposed on the first reflective path, and infrared light reflective ink layer 1132 is disposed on the second reflective path.
In the embodiment of the present application, in order to avoid the interference of the optical fingerprint recognition module to the display screen under the screen of infrared LED light filling, design infrared light transmission printing ink layer 1131 and infrared light reflection printing ink layer 1132 parallel thereto on the cover plate 11, prevent that the infrared light through finger reflection from getting into drive chip 15's the back, allow the infrared light that jets out from the fingertip after the total reflection inside the finger by infrared receiving sensor 14 catches, can avoid infrared receiving sensor 14 during operation infrared light reflection to drive chip's the influence of the back to liquid crystal display's display effect. The problem of mutual interference does not exist in fingerprint display screen and display screen.
Referring to fig. 8, fig. 8 is a flowchart illustrating a fingerprint image generating method according to an embodiment of the present disclosure. The method shown in fig. 8 is applied to any one of the liquid crystal display modules shown in fig. 1 to 7. The liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13 and an infrared receiving sensor 14, which are sequentially arranged from top to bottom; a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
a chip protection film 17 is disposed on a side of the driving chip 15 adjacent to the cover plate 11 (i.e., a back side of the driving chip 15).
As shown in fig. 8, the method may include the steps of:
801, under the condition that the liquid crystal display module carries out infrared fingerprint identification, an infrared light source emits infrared light for fingerprint identification to the outside of the cover plate through an infrared light-transmitting window;
and 802, capturing infrared light incident to the infrared receiving sensor in the infrared light for fingerprint identification by the infrared receiving sensor and generating a fingerprint image.
The infrared light which is incident to one side of the driving chip close to the cover plate in the infrared light for fingerprint identification is absorbed by the infrared light absorption film; alternatively, the first and second electrodes may be,
infrared light which is incident to one side of the driving chip close to the cover plate in the infrared light for fingerprint identification is reflected by the infrared light reflection film; alternatively, the first and second electrodes may be,
infrared light which is incident to one side of the driving chip close to the cover plate in the infrared light for fingerprint identification is absorbed and reflected by the infrared absorption and reflection film.
According to the fingerprint image generation method in the embodiment of the application, when the infrared fingerprint image is generated, the influence of the energy of infrared light gathered on the driving chip on the driving effect of the driving chip can be avoided, and therefore the display effect of the liquid crystal display screen can be improved.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present application. As shown in fig. 9, the liquid crystal display panel 100 may include a liquid crystal display module 10 and a display driving circuit 20, where the liquid crystal display module 10 may include a cover plate 11, a liquid crystal layer 12, a backlight layer 13, and an infrared receiving sensor 14, which are sequentially arranged from top to bottom (see the orientation marks of "top" and "bottom" in fig. 9); a driving chip 15 is arranged in a hollow area of the liquid crystal layer 12 close to one side of the cover plate 11 and not in contact with the cover plate 11, an infrared light-transmitting window 111 is arranged on the cover plate 11, and an infrared light source 16 is arranged below the infrared light-transmitting window 111;
under the condition that the liquid crystal display module 10 performs infrared fingerprint identification, the infrared light source 16 emits infrared light for fingerprint identification to the outside of the cover plate 11 through the infrared light-transmitting window 111;
the infrared light used for fingerprint identification generates two reflection paths after passing through the finger of the user: a first reflected path and a second reflected path; the first reflection path reaches the infrared receiving sensor 14, and the second reflection path reaches the driving chip 15;
a chip protection film 17 is arranged on the second reflection path, and the chip protection film 17 is used for absorbing and/or reflecting infrared light;
infrared light passing through the first reflection path among the infrared light for fingerprint recognition is captured by the infrared receiving sensor 14 and a fingerprint image is generated;
the infrared light passing through the second reflection path among the infrared light for fingerprint recognition is absorbed and/or reflected by the chip protection film 17.
The 15 driving chips are used for controlling the display of the liquid crystal display screen 100 through the display driving circuit 20.
In the embodiment of the application, in order to avoid the interference of optical fingerprint identification module to the display screen under the screen of infrared LED light filling, set up chip protection film on infrared light reaches driver chip's reflection route, can absorb or reflect the infrared light that infrared receiving sensor during operation reflected driver chip's the back, can avoid the energy gathering of infrared receiving sensor during operation infrared light at driver chip to driver chip's drive effect's influence, thereby can improve liquid crystal display's display effect.
Optionally, an embodiment of the present application may further provide a terminal device, where the terminal device may include the liquid crystal display shown in fig. 8, a processor, a memory, and the like. The terminal device may also include a communication interface, an antenna, etc.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application by applying specific examples, and the above description of the embodiments is only provided to help understand the solutions and their core ideas of the present application; meanwhile, for a person 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 liquid crystal display module is characterized by comprising a cover plate, a liquid crystal layer, a backlight layer and an infrared receiving sensor which are arranged from top to bottom in sequence; a driving chip is arranged in a hollow area, close to one side of the cover plate, of the liquid crystal layer and not in contact with the cover plate, an infrared light-transmitting window is arranged on the cover plate, and an infrared light source is arranged below the infrared light-transmitting window; the grid low-voltage VGL circuit of the driving chip is arranged on one side, close to the cover plate, of the driving chip;
under the condition that the liquid crystal display module carries out infrared fingerprint identification, the infrared light source emits infrared light for fingerprint identification to the outside of the cover plate through the infrared light-transmitting window;
the infrared light used for fingerprint identification generates two reflection paths after passing through the finger of the user: a first reflected path and a second reflected path; the first reflection path reaches the infrared receiving sensor, and the second reflection path reaches the driving chip;
a chip protection film is arranged on the second reflection path and used for absorbing and/or reflecting infrared light;
infrared light passing through the first reflection path among the infrared light for fingerprint recognition is captured by the infrared receiving sensor and generates a fingerprint image;
infrared light passing through the second reflection path among the infrared light for fingerprint recognition is absorbed and/or reflected by the chip protection film.
2. The LCD module of claim 1, wherein the gate low voltage VGL circuit disposed on the side of the driver IC proximate to the cover plate is grounded.
3. The liquid crystal display module of claim 1, wherein the chip protection film comprises an infrared light absorbing film or an infrared light reflecting film or an infrared absorbing and reflecting film.
4. The liquid crystal display module of claim 3, wherein the infrared light absorbing film comprises black polyethylene terephthalate PET.
5. The LCD module as recited in claim 3, wherein the IR reflecting film comprises white silica gel or white ink with IR reflecting function.
6. The liquid crystal display module of claim 3, wherein the infrared absorption reflection film comprises black polyethylene terephthalate, a graphite sheet and a copper foil.
7. The liquid crystal display module of claim 1, wherein the thickness of the chip protection film is less than 50 μm.
8. The LCD module as claimed in any one of claims 1 to 7, wherein the chip protection film is disposed on a side of the driving chip close to the cover plate.
9. The liquid crystal display module of claim 1, wherein the chip protection film is disposed inside the cover plate, the chip protection film comprising an infrared light reflecting ink layer;
the cover plate comprises a first black ink layer, an infrared light transmission and reflection ink layer and a second black ink layer, the infrared light transmission and reflection ink layer is located between the first black ink layer and the second black ink layer, the infrared light transmission and reflection ink layer comprises an infrared light transmission ink layer and an infrared light reflection ink layer which are arranged in parallel, and the infrared light transmission ink layer is arranged on the first reflection path.
10. The liquid crystal display screen is characterized by comprising a display driving circuit and the liquid crystal display module set forth in any one of claims 1-9, wherein a driving chip in the liquid crystal display module is used for controlling the display of the liquid crystal display screen through the display driving circuit.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110011056A (en) * | 2009-07-27 | 2011-02-08 | 삼성전자주식회사 | Sensing device and method of sening a light by using the same |
| TW201144905A (en) * | 2010-06-03 | 2011-12-16 | Lg Display Co Ltd | Touch panel integrated display device |
| CN108563371A (en) * | 2018-06-29 | 2018-09-21 | 广州新空电子科技有限公司 | A kind of infrared touch panel signal acquisition circuit and method |
| CN108833625A (en) * | 2018-06-15 | 2018-11-16 | Oppo广东移动通信有限公司 | sensor control circuit and electronic device |
| CN208488620U (en) * | 2018-07-31 | 2019-02-12 | Oppo广东移动通信有限公司 | Display screen and electronic equipment |
| CN109585525A (en) * | 2019-01-08 | 2019-04-05 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof, display panel and display device |
| CN110414467A (en) * | 2019-08-05 | 2019-11-05 | 深圳市隆利科技股份有限公司 | Fingerprint recognition terminal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723984B (en) * | 2015-03-27 | 2021-04-11 | 日商半導體能源研究所股份有限公司 | Touch panel |
-
2020
- 2020-03-03 CN CN202010139784.1A patent/CN111198454B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110011056A (en) * | 2009-07-27 | 2011-02-08 | 삼성전자주식회사 | Sensing device and method of sening a light by using the same |
| TW201144905A (en) * | 2010-06-03 | 2011-12-16 | Lg Display Co Ltd | Touch panel integrated display device |
| CN108833625A (en) * | 2018-06-15 | 2018-11-16 | Oppo广东移动通信有限公司 | sensor control circuit and electronic device |
| CN108563371A (en) * | 2018-06-29 | 2018-09-21 | 广州新空电子科技有限公司 | A kind of infrared touch panel signal acquisition circuit and method |
| CN208488620U (en) * | 2018-07-31 | 2019-02-12 | Oppo广东移动通信有限公司 | Display screen and electronic equipment |
| CN109585525A (en) * | 2019-01-08 | 2019-04-05 | 京东方科技集团股份有限公司 | Array substrate and preparation method thereof, display panel and display device |
| CN110414467A (en) * | 2019-08-05 | 2019-11-05 | 深圳市隆利科技股份有限公司 | Fingerprint recognition terminal device |
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