CN111679468B - Liquid crystal display module and display device - Google Patents
Liquid crystal display module and display device Download PDFInfo
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- CN111679468B CN111679468B CN202010616861.8A CN202010616861A CN111679468B CN 111679468 B CN111679468 B CN 111679468B CN 202010616861 A CN202010616861 A CN 202010616861A CN 111679468 B CN111679468 B CN 111679468B
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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
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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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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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
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/141—Control of illumination
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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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Abstract
The application discloses liquid crystal display module and display device, this liquid crystal display module include liquid crystal display panel and flexible circuit board, and this liquid crystal display panel forms the test terminal of lighting a lamp in the lower frame region, binds the fingerprint identification signal lamp on the test terminal of lighting a lamp, and in the signal conversion district, the test terminal of lighting a lamp is formed with the fingerprint drive terminal of fingerprint identification signal lamp. After the liquid crystal display module assembly test is accomplished, this application can make reasonable use of lower frame area through setting up fingerprint identification signal lamp and fingerprint drive terminal on lighting test terminal, under the condition that does not increase liquid crystal display module assembly lower frame and does not lose the panel transmissivity, rationally places the signal lamp.
Description
Technical Field
The application relates to the field of display, in particular to a liquid crystal display module and a display device.
Background
The identification of fingerprints under the screen is another lighting point of portable electronic products, and becomes a hot tide for research and application in the electronic industry. To realize the function of unlocking fingerprints under the screen, each module of fingerprint identification such as a connector and an infrared signal lamp is added on the basis of the original electronic element of the mobile phone screen, and an OLED display panel is easier to realize the fingerprint identification under the screen due to no limitation of backlight, and to realize the unlocking of fingerprints under the screen on a liquid crystal display module, a series of problems of hole digging, lower frame increasing and the like under the backlight are solved. As shown in fig. 1, the conventional scheme for identifying the fingerprint under the screen of the liquid crystal display panel is to place the infrared lamp in the extending direction of the lower frame, which undoubtedly increases the lower frame of the liquid crystal display module and runs contrary to the development trend of narrow frame and high utilization rate of the screen of the liquid crystal display module.
Therefore, the existing liquid crystal display module has the problem that the lower frame of the liquid crystal display module is enlarged due to improper setting of the infrared signal lamp.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display module and display device, can effectively alleviate the problem that current liquid crystal display module has infrared signal lamp to set up improper frame under leading to the liquid crystal display module and increase.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a liquid crystal display module, include:
the liquid crystal display panel is provided with a lighting test terminal in a lower frame area, a fingerprint identification signal lamp is bound on the lighting test terminal, and a fingerprint drive terminal electrically connected with the fingerprint identification signal lamp is formed in a signal conversion area;
the flexible circuit board signal conversion district in with liquid crystal display panel binds, including display panel driver chip and fingerprint identification driver chip, display panel driver chip is used for the drive liquid crystal display panel work, fingerprint identification driver chip is used for passing through fingerprint drive terminal drive fingerprint identification signal lamp work.
In some embodiments, the fingerprint identification signal lamp includes one of a miniature organic light emitting diode and a micro organic light emitting diode.
In some embodiments, the light generated by the fingerprint identification signal light is infrared light.
In some embodiments, the fingerprint identification signal lamp includes a transmitting signal lamp and a receiving signal lamp.
In some embodiments, the fingerprint identification signal lamps are arranged on the liquid crystal display module in a line symmetry mode along the center line of the liquid crystal display module.
In some embodiments, the number of the signal lamps is two.
In some embodiments, the signal lamps are distributed in an array on both sides of the signal terminal.
In some embodiments, the signal lights are on one side of the signal terminals.
In some embodiments, the liquid crystal display panel includes a plurality of image sensors, and the image sensors are connected to the flexible circuit board.
The application also provides a display device which comprises the liquid crystal display module.
The application discloses liquid crystal display module and display device, this liquid crystal display module include liquid crystal display panel and flexible circuit board, and this liquid crystal display panel forms the test terminal of lighting a lamp in the lower frame region, binds the fingerprint identification signal lamp on the test terminal of lighting a lamp, and in the signal conversion district, the test terminal of lighting a lamp is formed with the fingerprint drive terminal of fingerprint identification signal lamp. After the liquid crystal display module assembly test is accomplished, this application can make reasonable use of lower frame area through setting up fingerprint identification signal lamp and fingerprint drive terminal on lighting test terminal, under the condition that does not increase liquid crystal display module assembly lower frame and does not lose the panel transmissivity, rationally places the signal lamp.
Drawings
The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a liquid crystal display module according to the prior art;
fig. 2 is a schematic plan view of a liquid crystal display module according to an embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of a liquid crystal display module according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of a process for fabricating a liquid crystal display module.
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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the liquid crystal display module in the conventional technology for identifying fingerprints under a screen includes a liquid crystal display panel, where the liquid crystal display panel includes an array substrate 110, a color filter substrate 130 disposed opposite to the array substrate 110, and a liquid crystal cell 120 located between the array substrate 110 and the color filter substrate 130. The liquid crystal display module includes the display area, the bending zone and is located the display area with binding district A1 between the bending zone, in binding district A1, the liquid crystal display module includes liquid crystal display panel and flexible circuit board 300 to and fingerprint identification signal lamp 200, because fingerprint identification signal lamp 200 sets up in the lower frame, increased the area of lower frame, violated the trend that mainstream liquid crystal display module reduced the lower frame.
As shown in fig. 2, fig. 3 is a schematic plan view of a liquid crystal display module provided in the present application, and fig. 3 is a schematic cross-sectional view of the liquid crystal display module provided in the present application, which includes a liquid crystal display panel 100 and a flexible circuit board 300, where the liquid crystal display panel includes a display area and a signal conversion area a-a'; the liquid crystal display panel 100 includes a lighting test terminal 400, a fingerprint identification signal lamp 200 is bound to the lighting test terminal 400, and a driving terminal electrically connected to the fingerprint identification signal lamp is formed in the lighting test terminal 400 in a signal conversion region; the flexible circuit board 300 is in the signal conversion district with liquid crystal display panel binds, including display panel driver chip and fingerprint identification driver chip, display panel driver chip is used for the drive liquid crystal display panel work, fingerprint identification driver chip is used for passing through fingerprint drive terminal drive fingerprint identification signal lamp work. The liquid crystal display panel 100 includes an array substrate, a color film substrate, and a liquid crystal cell located between the array substrate and the color film substrate, wherein the color film substrate is further provided with a light guide plate and a visible light source. The array substrate comprises a fingerprint sensing device, and can convert fingerprint information into an electric signal and transmit the electric signal to the flexible circuit board 300.
In some embodiments, the fingerprint sensing device is an image sensor capable of converting a change of sensed light into an electrical signal and transmitting the electrical signal to the chip, the image sensor is disposed in the array substrate, and sensing light of the image sensor is generally invisible light.
In some embodiments, the liquid crystal display panel is provided with a light control film in a pixel opening area for distinguishing fingerprint identification light from normal display light, and the image sensor is set to be capable of only identifying fingerprint identification light, so that invisible light can only be transmitted to the image sensor through small holes arranged in the small hole layer, and the signal-to-noise ratio of a fingerprint identification signal is improved.
In some embodiments, the lighting test terminal 400 includes a first test terminal and a second test terminal, the first test terminal is connected to the scan line of the liquid crystal display panel 100 and is configured to provide and receive the first detection signal to the scan line, and the second test terminal is connected to the source and drain of the liquid crystal display panel 100 and is configured to provide and receive the second detection signal to the source and drain of the liquid crystal display panel 100. After the liquid crystal display panel is assembled, the lighting test terminal 400 is connected to a test device to test the liquid crystal display panel. After detecting trouble-free, change first test terminal into fingerprint drive terminal, fingerprint drive terminal be used for to fingerprint identification signal lamp 200 provides the signal of telecommunication. The fingerprint identification signal lamp 200 is designed in a line symmetry mode about the center line of the liquid crystal display module.
In some embodiments, there are two fingerprint identification signal lamps 200, and the distance between the fingerprint identification signal lamps 200 and the display area of the liquid crystal display module is between 4 micrometers and 6 micrometers.
In some embodiments, the fingerprint identification signal lamps 200 are distributed on both sides of the lighting test terminal 400 in an array manner, the distance between the adjacent fingerprint identification signal lamps 200 is 4 micrometers to 6 micrometers, and the distance between the fingerprint identification signal lamps 200 and the display area of the liquid crystal display module is 4 micrometers to 6 micrometers.
In some embodiments, after the liquid crystal display module is completed, the fingerprint identification signal lamp 200 is mounted on the lighting test terminal 400, where the fingerprint identification signal lamp 200 includes a first row of LED signal lamps and a second row of LED signal lamps, and a distance between the second row of LED signal lamps is 0.5mm to 2 mm. If the distance between adjacent second rows of LED signal lamps is too large in the horizontal direction, the number of second rows of LEDs on the same-sized display panel is too small, which may cause the uniformity of the light provided by the signal lamp 200 to be poor, and influence the sensor sensing. If the distance between the adjacent second LEDs is too small in the horizontal direction, infrared light emitted by the first row of LEDs is easily blocked by the second row of LEDs, so that the transmission efficiency of the signal lamp is affected. In this embodiment, a distance between the first row of LED signal lamps and the second LED is greater than or equal to 0.3 mm. If the distance between the first LED signal lamp and the second row of LED signal lamps is too small, the process difficulty of fixing the first row of LED signal lamps and the second row of LED signal lamps by adopting the welding pads is high, and a suspension bridge or displacement is easy to occur between the first row of LED signal lamps and the second row of LED signal lamps. If the distance between the first row of LED signal lamps and the second row of LED signal lamps is too large, the distance between the first row of LEDs and the second row of LEDs is too far, the difficulty of transmitting infrared light emitted by the first row of LEDs to the light guide plate of the liquid crystal display panel is high, and the light loss of the signal lamps is easily caused.
In some embodiments, the fingerprint identification signal lamp used in the present application is invisible light, which refers to light invisible to the naked human eye, wherein the main light includes ultraviolet light, far infrared light, and the like. The wavelength of the electromagnetic wave which can be sensed by the eyes of a general person is between 400 and 700 nanometers, and the invisible light is used for providing an identification signal of the image sensor, and the visible light is required by the liquid crystal display module to be different. The signal lamp is a small organic light emitting diode (mini-LED) or a Micro organic light emitting diode (Micro-LED), wherein the mini-LED is about 100 micrometers in size, the mini-LED has the advantages that batch production is easy to achieve, the Micro-LED is 1 micrometer to 100 micrometers in size, and the Micro-LED has the advantages of high efficiency, high brightness, high reliability and short response time. Because the metal wiring for detecting the liquid crystal display panel does not start normal work during fingerprint identification, the metal wiring can be used as the wiring of the signal lamp. But not limited thereto, on the premise of not affecting the normal operation of the liquid crystal display module, other wires can be multiplexed in other embodiments, thereby saving space and cost.
In some embodiments, the liquid crystal display panel is connected to the color film substrate and the array substrate by using sealant. In the binding region, a small opening is formed in the liquid crystal frame glue, an optical filter is attached to the inside of the liquid crystal frame glue, and the optical filter allows invisible light to penetrate through and transmit the invisible light to the image sensor, so that the signal-to-noise ratio of the fingerprint identification signal is improved.
In some embodiments, when the user stores the fingerprint, when the finger pressed the liquid crystal display module screen, fingerprint driver chip drive emission signal lamp transmission infrared ray, and the infrared light of finger refraction transmits for image sensor, image sensor forms the fingerprint pattern according to the infrared light of receipt to transmit for flexible circuit board and receipt signal lamp. The flexible circuit board comprises a fingerprint identification chip, and the fingerprint identification chip analyzes the fingerprint pattern, provides a characteristic value and stores the characteristic value in the fingerprint identification chip. Meanwhile, the receiving signal lamp receives the fingerprint image and sends a termination signal to the fingerprint identification driving chip, and the transmitting signal lamp stops working.
In some embodiments, when the user unlocks, when the finger pressed the liquid crystal display module screen, the fingerprint drive chip drive emission signal lamp emission infrared ray, and the finger refracts infrared ray and transmits for image sensor, image sensor forms the fingerprint pattern according to the infrared ray light of receipt to transmit for flexible circuit board and receipt signal lamp. The flexible circuit board comprises a fingerprint identification chip, the fingerprint identification chip analyzes the pattern, a characteristic value is provided and compared with the fingerprint stored in the chip, if the comparison result of the characteristic value is more than seventy percent, the chip sends an unlocking success command to the liquid crystal display module, otherwise, the unlocking failure is sent.
The liquid crystal display panel testing device has the advantages that after the liquid crystal display panel testing is completed, the signal lamp is arranged on the signal port, the signal port can be reasonably utilized, and the signal lamp is reasonably arranged under the condition that the frame and the panel transmittance are not lost under the liquid crystal display module.
Fig. 4 is a manufacturing process of the liquid crystal display module, as shown in fig. 4, the manufacturing process of the liquid crystal display module includes:
step S1: providing an array substrate mother board, wherein a lighting test terminal is arranged on the lower frame of the array substrate mother board;
step S2: placing a liquid crystal box on the array substrate, and coating frame glue around the liquid crystal box;
step S3: providing a color film substrate mother set, and arranging the color film substrate mother set and the array substrate mother set in a box-to-box manner to form a liquid crystal display panel mother set;
step S4: providing a detection instrument, detecting the liquid crystal display panel mother board through a lighting test terminal, and installing a fingerprint identification signal lamp after the detection is finished;
step S5: and cutting the mother board of the liquid crystal display panel to form the liquid crystal display panel.
In step S1, the array substrate master is sequentially formed with a substrate, a sensing layer, an optical adhesive layer, and a driving circuit layer from bottom to top, where the sensing layer is formed with a fingerprint identification device. The substrate is used for supporting the liquid crystal display module, and the substrate is usually a polyimide film and has good insulation property and heat resistance. The optical adhesive layer material is optical acrylic pressure-sensitive adhesive, is a non-matrix material, has the advantages of high light transmittance, low exposure, high adhesion, ultraviolet resistance and the like, and provides infrared light for the induction layer. The driving circuit layer array substrate comprises an active layer, a grid electrode insulating layer, a source drain electrode layer, a pixel electrode layer and a light resistor. The sensing layer is provided with an image sensor, can turn into the signal of telecommunication transmission for the chip with the change of the light of feeling, image sensor sets up in the array substrate, the response light divides into visible light and invisible light, invisible light is used for discerning the fingerprint, visible light is used for the liquid crystal display module to present the image. In some embodiments, the second optical adhesive layer is further attached to the driving circuit layer. In some embodiments, the liquid crystal display module further comprises a cover window, the cover window is glass used for packaging the liquid crystal display module, and the cover window is connected through optical cement.
In step S2, the sealant is a photoresist, and the coating device coats the photoresist around the liquid crystal cell and stores energy through ultraviolet light irradiation.
In step S3, the color filter substrate includes a polarizer and a color filter electrode, the color filter electrode is disposed opposite to the pixel electrode, the sealant is subjected to ultraviolet curing after the box is set, and after the curing is completed, liquid crystal is injected into the liquid crystal box. And then, mounting a back signal lamp module on the color film substrate, wherein the back signal lamp module comprises an LED backlight lamp, a rubber frame, a light guide plate, a reflector plate, a diffusion sheet, a brightness enhancement film (BEF, a prism sheet), black and white glue and the like.
In step S4, in some embodiments, after the liquid crystal display panel is assembled, the signal terminals of the mother substrate on the array substrate are connected to the testing device to test the liquid crystal display panel, the signal terminals are connected to the data lines and the scan lines of the array substrate, and after the test is completed, a portion of the signal terminals are removed and the signal lamps are disposed, wherein the signal lamps are designed to be axisymmetric with respect to the center line of the liquid crystal display module.
In some embodiments, the number of the signal lamps is two, and the distance between the signal lamps and the display area of the liquid crystal display module is 4-6 micrometers.
In some embodiments, the signal lamps are distributed in an array at two ends of the signal terminal, the distance between adjacent signal lamps is 4-6 micrometers, and the distance between the signal lamps and the display area of the liquid crystal display module is 4-6 micrometers.
In some embodiments, all signal terminals are removed, and the signal lamps are installed with signal lamps including a first row of LED signal lamps and a second row of LED signal lamps, wherein the spacing between the second row of LED signal lamps is 0.5 mm-2 mm. If the distance between the adjacent second-row LED signal lamps is too large, the number of the second-row LEDs is reduced under the screen with the same size, so that the uniformity of light provided by the signal lamps is poor, and the sensing of the sensor is influenced. If the distance between the adjacent second LEDs is too small, infrared light emitted by the first row of LEDs is easily blocked by the second row of LEDs, so that the transmission efficiency of the signal lamp is influenced. In this embodiment, a distance between the first row of LED signal lamps and the second LED is greater than or equal to 0.3 mm. If the distance between the first LED signal lamp and the second row of LED signal lamps is too small, the first row of LED signal lamps and the second row of LED signal lamps are fixed by the welding disc, and a suspension bridge or displacement is easy to occur if the process difficulty of the first row of LED signal lamps and the second row of LED signal lamps is high. If the distance between the first row of LED signal lamps and the second row of LED signal lamps is too large, which causes the distance between the first row of LEDs and the second row of LEDs to be too far, the difficulty of transmitting the infrared light emitted by the first row of LEDs to the light guide plate of the liquid crystal display panel is large, which easily causes the loss of the light of the signal lamps.
In some embodiments, the signal light used in the present application is invisible light, which refers to light invisible to the naked human eye, and mainly includes ultraviolet light, far infrared light, and the like. The wavelength of the electromagnetic wave which can be sensed by the eyes of a general person is between 400 and 700 nanometers, and the invisible light is used for providing an identification signal of the image sensor, and the visible light is required by the liquid crystal display module to be different. The signal lamp is a small organic light emitting diode (mini-LED) or a Micro organic light emitting diode (Micro-LED), wherein the mini-LED is about 100 micrometers in size, the mini-LED has the advantages that batch production is easy to achieve, the Micro-LED is 1 micrometer to 100 micrometers in size, and the Micro-LED has the advantages of high efficiency, high brightness, high reliability and short response time. The wiring of the signal lamp 200 is metal wiring adopting an original signal terminal, and the signal lamp obtains an electric signal through the metal wiring. When the fingerprint is identified, the metal wiring for detecting the liquid crystal display panel does not start to work normally, so that the metal wiring can be used as the wiring of the signal lamp. But not limited thereto, on the premise of not affecting the normal operation of the liquid crystal display module, other wires can be multiplexed in other embodiments, thereby saving space and cost.
The application also provides a display device, which comprises the liquid crystal display module, wherein the liquid crystal display module comprises a plurality of processors (the processors can comprise but are not limited to processing devices such as a microprocessor MCU or a programmable logic device FPGA) and a memory for storing data.
In some embodiments, when the user stores the fingerprint, when the finger pressed the liquid crystal display module screen, the finger refracted infrared light transmitted for image sensor, image sensor formed the fingerprint pattern according to the infrared light of receipt to transmit for the flexible circuit board, the flexible circuit board contains the chip, the chip is right the pattern is analyzed, proposes the eigenvalue, stores in the chip.
In some embodiments, when a user unlocks, when a finger presses a screen of the liquid crystal display module, the finger refracts infrared light to transmit to the image sensor, the image sensor forms a fingerprint pattern according to the received infrared light and transmits the fingerprint pattern to the flexible circuit board, the flexible circuit board comprises a chip, the chip analyzes the pattern, provides a characteristic value and compares the characteristic value with the fingerprint stored in the chip, if the characteristic value comparison result is greater than seventy percent, the chip sends an unlocking success instruction to the liquid crystal display module, otherwise, the chip sends an unlocking failure.
The application discloses liquid crystal display module and display device, this liquid crystal display module include liquid crystal display panel and flexible circuit board, and this liquid crystal display panel forms the test terminal of lighting a lamp in the lower frame region, binds the fingerprint identification signal lamp on the test terminal of lighting a lamp, and in signal conversion district, the test terminal of lighting a lamp is formed with the fingerprint drive terminal of fingerprint identification signal lamp. After the liquid crystal display module assembly test is accomplished, this application can make reasonable use of lower frame area through setting up fingerprint identification signal lamp and fingerprint drive terminal on lighting test terminal, under the condition that does not increase liquid crystal display module assembly lower frame and does not lose the panel transmissivity, rationally places the signal lamp.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
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 the related descriptions of other embodiments.
The liquid crystal display module and the display device provided by the embodiment of the present application are described in detail above, and a specific example is applied to explain the principle and the implementation manner of the present application, and the description of the above embodiment is only used to help understand the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A liquid crystal display module, its characterized in that includes:
the liquid crystal display panel is provided with a lighting test terminal in a lower frame area, a fingerprint identification signal lamp is bound on the lighting test terminal, and a fingerprint drive terminal electrically connected with the fingerprint identification signal lamp is formed in a signal conversion area;
the flexible circuit board in the signal conversion district with liquid crystal display panel binds, including display panel driver chip and fingerprint identification driver chip, display panel driver chip is used for the drive liquid crystal display panel work, fingerprint identification driver chip is used for passing through fingerprint drive terminal drive fingerprint identification signal lamp work.
2. The liquid crystal display module of claim 1, wherein the fingerprint identification signal comprises one of a micro-organic light emitting diode and a micro-organic light emitting diode.
3. The liquid crystal display module of claim 2, wherein the light generated by the fingerprint identification signal lamp is infrared light.
4. The liquid crystal display module of claim 2, wherein the fingerprint identification signal lamp comprises an emission signal lamp and a reception signal lamp.
5. The liquid crystal display module as set forth in claim 1, wherein the fingerprint identification signal lamps are disposed on the liquid crystal display module in line-symmetry along a center line of the liquid crystal display module.
6. The liquid crystal display module of claim 5, wherein the number of signal lamps is two.
7. The liquid crystal display module of claim 5, wherein the signal lights are arranged in an array on both sides of the signal terminals.
8. The liquid crystal display module of claim 1, wherein the signal lamp is on one side of the signal terminal.
9. The liquid crystal display module of claim 1, wherein the liquid crystal display panel comprises a plurality of image sensors, the image sensors being connected to the flexible circuit board.
10. A display device comprising the liquid crystal display module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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